Collinsville, Illinois Weather Conditions

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Current Conditions

  • 36°
  • Overcast
  • Wind: SSE 8 mph
  • Humidity: 86%
  • Visibility: 7.0 miles
  • Dew Point: 32°
  • Pressure: 29.87 in. -
  • Heat Index: 30

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Next 12 Hours

8  am
11  am
2  pm
5  pm
8  pm
Overcast
Overcast
Overcast
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Chance of Rain
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35°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Chance of Rain
  • High: 52 °
  • Low: 23 °
  • Chance of Rain
  • Wednesday
  • Snow Showers
  • High: 24 °
  • Low: 9 °
  • Snow Showers
  • Thursday
  • Clear
  • High: 27 °
  • Low: 8 °
  • Clear
  • Friday
  • Clear
  • High: 43 °
  • Low: 25 °
  • Clear
  • Saturday
  • Clear
  • High: 54 °
  • Low: 28 °
  • Clear

Forecast for Collinsville, Illinois

Updated: 7:14 AM CST on January 03, 2015

  • Today

    Cloudy this morning with showers during the afternoon. High 11C. Winds SW at 15 to 30 km/h. Chance of rain 50%.

  • Today

    Showers early with steady light freezing rain overnight. Low near -5C. Winds NNW at 25 to 40 km/h. Chance of precip 60%.

  • Tomorrow

    Variable clouds with snow showers. High near -5C. Winds N at 15 to 30 km/h. Chance of snow 60%. Snowfall of 2-3cm.

  • Tomorrow

    Overcast. A few flurries are possible. Low -13C. Winds N at 15 to 30 km/h.

  • Thursday

    Sunny. High -3C. Winds NNW at 15 to 30 km/h.

  • Thursday

    A mostly clear sky. Low -13C. Winds light and variable.

  • Friday

    Mainly sunny. High 6C. Winds S at 15 to 25 km/h.

  • Friday

    A few clouds. Low -4C. Winds SSW at 10 to 15 km/h.

  • Saturday

    Sunny. High 12C. Winds WNW at 10 to 15 km/h.

  • Saturday

    Clear skies. Low -2C. Winds NNE at 10 to 15 km/h.

  • Sunday

    A mainly sunny sky. High near 10C. Winds SSW at 10 to 15 km/h.

  • Sunday

    Clear. Low around 0C. Winds SW at 10 to 15 km/h.

  • Monday

    Mainly sunny. High 12C. Winds WNW at 10 to 15 km/h.

  • Monday

    Clear skies. Low 1C. Winds S at 10 to 15 km/h.

  • Tuesday

    Mostly sunny skies. High 16C. Winds S at 10 to 15 km/h.

  • Tuesday

    Mostly clear skies. Low 1C. Winds SSW at 10 to 15 km/h.

  • Wednesday

    Mostly sunny skies. High 17C. Winds SE at 10 to 15 km/h.

  • Wednesday

    A few clouds from time to time. Low 4C. Winds ESE at 10 to 15 km/h.

  • Thursday

    Partly cloudy. High around 15C. Winds E at 15 to 25 km/h.

  • Thursday

    Cloudy with showers. Low 4C. Winds ESE at 10 to 15 km/h. Chance of rain 40%.

  • Friday

    Rain showers in the morning becoming more intermittent in the afternoon. High 14C. Winds ESE at 15 to 25 km/h. Chance of rain 40%.

  • Friday

    Cloudy with occasional rain showers. Low around 5C. Winds ESE at 10 to 15 km/h. Chance of rain 50%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Collinsville West, Collinsville, IL

Updated: 8:55 AM CST

Temperature: 36.5 °F Dew Point: 34 °F Humidity: 91% Wind: South at 3.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Tim and Carolyns yard, COLLINSVILLE, IL

Updated: 8:55 AM CST

Temperature: 36.7 °F Dew Point: 33 °F Humidity: 87% Wind: WSW at 3.6 mph Pressure: 29.41 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: Rolling Meadows Dr, Maryville, IL

Updated: 8:56 AM CST

Temperature: 37.0 °F Dew Point: 33 °F Humidity: 85% Wind: Calm Pressure: 29.17 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Barbarotto Compound, Maryville, IL

Updated: 8:55 AM CST

Temperature: 36.5 °F Dew Point: 34 °F Humidity: 90% Wind: SSE at 9.0 mph Pressure: 29.77 in Hourly Precipitation: 0.01 in Windchill: 30 °F Graphs

Location: Liberty Place, Troy, IL

Updated: 8:45 AM CST

Temperature: 36.7 °F Dew Point: 34 °F Humidity: 90% Wind: SSE at 7.0 mph Pressure: 29.20 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: Nolan Creek Subdivision, OFallon, IL

Updated: 8:42 AM CST

Temperature: 37.1 °F Dew Point: 34 °F Humidity: 88% Wind: SSE at 6.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Fairwood Hills, OFallon, IL

Updated: 8:55 AM CST

Temperature: 37.4 °F Dew Point: 32 °F Humidity: 82% Wind: SSW at 3.6 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Birmingham Drive, Glen Carbon, IL

Updated: 8:55 AM CST

Temperature: 35.8 °F Dew Point: 32 °F Humidity: 86% Wind: North at - Pressure: 29.87 in Hourly Precipitation: - Windchill: 36 °F Graphs

Location: Don's Backyard, O'Fallon, IL

Updated: 8:55 AM CST

Temperature: 37.4 °F Dew Point: 33 °F Humidity: 85% Wind: SSW at 3.8 mph Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: New Goose, Fairview Heights, IL

Updated: 8:55 AM CST

Temperature: 37.2 °F Dew Point: 34 °F Humidity: 90% Wind: SSE at 6.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Chalet Court, Fairview Heights, IL

Updated: 8:55 AM CST

Temperature: 36.1 °F Dew Point: 34 °F Humidity: 90% Wind: North at - Pressure: 29.91 in Hourly Precipitation: - Windchill: 36 °F Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 8:55 AM CST

Temperature: 37.4 °F Dew Point: 34 °F Humidity: 88% Wind: SE at 7.0 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Prairie Crossing, OFallon, IL

Updated: 8:51 AM CST

Temperature: 37.6 °F Dew Point: 35 °F Humidity: 89% Wind: West at 4.7 mph Pressure: 29.63 in Hourly Precipitation: - Windchill: 34 °F Graphs

Location: Mallard Pointe, Troy, IL

Updated: 8:55 AM CST

Temperature: 33.8 °F Dew Point: 26 °F Humidity: 72% Wind: South at 6.0 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 28 °F Graphs

Location: Prairie Manor, Edwardsville, IL

Updated: 8:55 AM CST

Temperature: 36.5 °F Dew Point: 31 °F Humidity: 80% Wind: South at 14.5 mph Pressure: 29.65 in Hourly Precipitation: 0.07 in Windchill: 28 °F Graphs

Location: EAST GRANITE, Granite City, IL

Updated: 8:44 AM CST

Temperature: 37.8 °F Dew Point: 35 °F Humidity: 88% Wind: SSW at 5.3 mph Pressure: 29.79 in Hourly Precipitation: - Windchill: 34 °F Graphs

Location: MesoWest NAMOK2 IL US UPR, Granite City, IL

Updated: 7:00 AM CST

Temperature: 36 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: MesoWest NAMOK1 IL US UPR, Granite City, IL

Updated: 7:25 AM CST

Temperature: 39 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Kelly Greens Weather Station, Edwardsville, IL

Updated: 8:55 AM CST

Temperature: 35.9 °F Dew Point: 34 °F Humidity: 93% Wind: South at 9.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Dunlap Lake, Edwardsville, IL

Updated: 8:49 AM CST

Temperature: 36.2 °F Dew Point: 34 °F Humidity: 92% Wind: SW at 3.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Grand Ave, Edwardsville, IL

Updated: 8:55 AM CST

Temperature: 36.9 °F Dew Point: 36 °F Humidity: 98% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Nickel Plate Trail, Edwardsville, IL

Updated: 8:55 AM CST

Temperature: 36.3 °F Dew Point: 34 °F Humidity: 92% Wind: South at 3.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Greg and Linsay's House, Swansea, IL

Updated: 8:55 AM CST

Temperature: 36.3 °F Dew Point: 31 °F Humidity: 80% Wind: SW at 6.7 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Windchill: 31 °F Graphs

Location: North Horner Park, Lebanon, IL

Updated: 8:55 AM CST

Temperature: 38.0 °F Dew Point: 25 °F Humidity: 60% Wind: SSW at 9.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Lake Christine, Belleville, IL

Updated: 8:52 AM CST

Temperature: 38.5 °F Dew Point: 33 °F Humidity: 81% Wind: NW at 4.2 mph Pressure: 29.65 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: West End, Belleville, IL

Updated: 8:55 AM CST

Temperature: 36.7 °F Dew Point: 28 °F Humidity: 89% Wind: South at 6.0 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: APRSWXNET Shiloh IL US, Belleville, IL

Updated: 8:30 AM CST

Temperature: 36 °F Dew Point: 33 °F Humidity: 89% Wind: SE at 12 mph Pressure: 29.82 in Hourly Precipitation: 0.04 in Windchill: 28 °F Graphs

Location: Branch Street, St. Louis, MO

Updated: 8:50 AM CST

Temperature: 34.5 °F Dew Point: - Humidity: 84% Wind: North at - Pressure: 29.40 in Hourly Precipitation: - Windchill: 34 °F Graphs

Location: BLAIR STREET, St. Louis, MO

Updated: 8:50 AM CST

Temperature: 35.4 °F Dew Point: - Humidity: 89% Wind: North at - Pressure: 29.35 in Hourly Precipitation: - Windchill: 35 °F Graphs

Location: St. Jacob, Il, St. Jacob, IL

Updated: 8:55 AM CST

Temperature: 36.1 °F Dew Point: 31 °F Humidity: 80% Wind: SE at 5.4 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Belleville, IL, Belleville, IL

Updated: 8:55 AM CST

Temperature: 37.6 °F Dew Point: 23 °F Humidity: 56% Wind: East at 3.9 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: Belleville - Southeast, Belleville, IL

Updated: 8:55 AM CST

Temperature: 37.4 °F Dew Point: 34 °F Humidity: 87% Wind: West at 7.6 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Windchill: 32 °F Graphs

Location: Soulard, Saint Louis, MO

Updated: 8:54 AM CST

Temperature: 37.9 °F Dew Point: 35 °F Humidity: 90% Wind: ESE at 2.7 mph Pressure: 29.52 in Hourly Precipitation: - Windchill: 38 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service St Louis MO 
725 am CST Tue Mar 3 2015 


Update: 
issued at 725 am CST Tue Mar 3 2015 


Surface temperatures have begun to rise in earnest over central 
and parts of northeast MO during the past hour as winds have 
turned more from the due south. Further east, winds remain from 
the southeast and any temp rises, if any, have been much less. The 
location of the 32f isotherm extends from just south of Kirksville 
(irk) southeastward to the northern stl Metro area and east 
towards Vandalia, Illinois. We anticipate some acceleration in the 
warming to expand areawide over the next hour or two as winds 
continue to veer more S and eventually SW. 


Couple that with pcpn...models have done a good job with 
forecasting our brief light rain/freezing rain event at sunrise 
and with little in the way of echo to the west behind it, lots of 
very low clouds in its wake filling in behind it, and some weak 
low level convergence from warm front slowly lifting north, should 
see patchy drizzle for pcpn from time to time thru about early 
afternoon. 


Putting it all together, currently anticipate being able to allow 
the advisory to expire everywhere at 8am this morning with limited 
areas still below freezing at that time and only very light pcpn 
if any left. 


Tes 


&& 


Short term: (through late this afternoon) 
issued at 403 am CST Tue Mar 3 2015 


At 09z, the critical 32f isotherm was draped near I-70 in MO and 
then curved southeastward near the MS river with much of Illinois at or 
below freezing. There remains a decent dewpoint depression of 
around 10 degrees in place for many locations, giving some room to 
spare when pcpn does get going, to prevent too great of a temp rise 
too soon. Southeast surface winds are already in place, though, resulting 
in some weak warm air advection. 


The models are in decent agreement on a batch of light pcpn 
developing over central MO in the next couple hours and then 
propagating eastward down I-70 into stl Metro and into southwestern 
IL, developing and growing as it does so. Given the decent dewpoint 
depressions, the pcpn development should act to counter or severely 
retard any temp rises for the next several hours until it passes 
thru by mid-late morning. This could be a Key Point, with the 32f 
isotherm not really expected to budge much thru about 12-13z/06-07am 
and should result in light freezing rain/fzdz for many areas near and north 
of I-70 with the potential for a light glazing still in place. 
While ice accums look to be pretty spotty for areas outside of 
northeast MO and west-central IL, will maintain current alignment of 
the winter wx advisory since brief freezing rain periods are still expected 
throughout these areas. 


Once we get past mid-late morning, the midday and afternoon hours 
look pretty quiet from a sensible wx perspective with spotty drizzle 
perhaps the only pcpn expected. Pcpn for the event heading into 
tonight will try to get going very late this afternoon but should 
largely hold off until after Sundown. 


Cloudy skies will limit the warmup we could have, but gusty S-SW 
winds will do their part, with temp readings ranging from the 40s 
north of I-70, to the lower 50s for many areas south. 


Tes 


Long term: (tonight through monday) 
issued at 403 am CST Tue Mar 3 2015 


Cold front will drop southeast of our forecast area this evening. 
Rain will continue this evening across southeast MO and southwest 
IL, mainly southeast of stl due to low-mid level warm air advection 
ahead of weak southwest flow shortwaves along with mid level 
frontogenesis behind the surface front. As the initially shallow 
cold layer progresses southeastward the rain will change to freezing 
rain, then briefly to sleet and finally to snow late tonight. There 
will likely be some minor ice and snow/sleet accumulations late 
tonight southeast of stl. Precipitation should ramp up on Wednesday 
as a positively tilted upper level trough approaches with increasing 
upper level divergence across our area in the right entrance region 
of an upper level jet streak over the Great Lakes region. The 
strongest low-mid level warm air advection along with the best low 
level moisture should continue to be across southeast MO and 
southwest Illinois. The NAM model appears a little too strong with this 
low level forcing and also stronger with a southern stream shortwave 
and hence has more qpf as well as its precipitation extending a 
little further north than the other models. Went closer to the 
European model (ecmwf) model solution for Wednesday and Wednesday night as its a 
compromise between the NAM and the GFS which has the precipitation 
shield further south and is also lighter on the amounts. There will 
continue to be sleet and freezing rain Wednesday morning across 
southeast MO and southwest IL, but as the cold layer deepens and the 
elevated warm layer shrinks the precipitation should change over to 
all snow by Wednesday afternoon. The snow will taper off by late 
Wednesday night and shift southeast of our forecast area. With 
still plenty of model uncertainty with regards to precipitation 
amounts and how far north the significant snow will extend will just 
issue a Winter Storm Watch for Wednesday and Wednesday evening for a 
small portion of southeast MO and southwest Illinois where there will be 
at least a light glazing of ice Wednesday morning followed by the 
potential of a total snow accumulation of around 4 to 7 inches. 
Little diurnal temperature rise is expected on Wednesday with cold 
air advection along with cloud cover and precipitation. Wednesday 
night and Thursday will be unseasonably cold as the strong surface 
high moves southeastward through the region with the models dropping 
the -16 degree c 850 mb isotherm southward to just south of stl by 
Thursday morning. Warmer temperatures are expected by Friday as the 
surface wind comes around to a southerly direction as the surface 
ridge shifts east of our area. A weak cold front will move 
southeastward through the forecast area on Saturday and Saturday 
evening, but it appears that any precipitation will remain northeast 
of our forecast area ahead of a northern stream shortwave and in the 
vicinity of an associated surface low. Only slight cooling is 
expected for the remainder of the weekend after passage of the cold 
front, mainly across northeast MO and west central Illinois. Temperatures 
for the weekend into early next week should be close to seasonal 
normals for early March. 


Gks 


&& 


Aviation: (for the 12z tafs through 12z Wednesday morning) 
issued at 533 am CST Tue Mar 3 2015 


Light rain still expected to develop into the stl Metro area early 
this morning and should be to the east of the area by 15z. By the 
time it does develop, temps should be above freezing, however, and 
have went with plain rain for a pcpn-type. Uin the exception and 
have gone with fzdz thru 14z before ending. MVFR cigs currently 
the rule at the taf sites, but IFR cigs closing in on all sides 
and anticipate them to prevail in the next hour or two. Low cigs 
to then prevail thru the day and into early this evening with some 
improvement back to MVFR cigs expected from the anticipated 
morning IFR. A cold front then moves thru late this afternoon and 
early this evening, and with the drier air, result in improving 
categories to VFR during the night. A quick shot of rain expected 
behind the front for areas S and east of stl, and have thus added to 
the cps taf and may need to be expanded to the other stl Metro 
sites. 


Specifics for kstl: light rain to develop imminently and continue 
until 14/15z, with IFR cigs developing on the backside. IFR to 
then continue into midday before some improvement. A cold front 
then moves thru early this evening, and with the drier air, 
result in improving categories to VFR during the night. A quick 
shot of rain expected behind the front for areas S and east of stl, 
and may need to be expanded to this terminal. 


Tes 


&& 


Lsx watches/warnings/advisories: 
MO...Winter Storm Watch from Wednesday morning through Wednesday 
evening for Iron MO-Madison MO-Reynolds MO-St. Francois MO- 
Ste. Genevieve MO. 


Winter Weather Advisory until 8 am CST this morning for Audrain 
MO-Knox MO-Lewis MO-Lincoln MO-Marion MO-Monroe MO- 
Montgomery MO-Pike MO-Ralls MO-Shelby MO-St. Charles MO-St. 
Louis city MO-St. Louis MO-Warren MO. 


Illinois...Winter Storm Watch from Wednesday morning through Wednesday 
evening for Randolph Illinois. 


Winter Weather Advisory until 8 am CST this morning for Adams Illinois- 
Bond Illinois-Brown Illinois-Calhoun Illinois-Clinton Illinois-Fayette Illinois-Greene Illinois- 
Jersey Illinois-Macoupin Illinois-Madison Illinois-Marion Illinois-Montgomery Illinois- 
Pike IL-St. Clair Illinois. 


&& 


$$ 


Weather forecast office lsx 












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