Collinsville, Illinois Weather Conditions

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Current Conditions

  • 41°
  • Overcast
  • Wind: East 7 mph
  • Humidity: 62%
  • Visibility: 10.0 miles
  • Dew Point: 29°
  • Pressure: 30.20 in. -
  • Heat Index: 36

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Next 12 Hours

6  pm
9  pm
12  am
3  am
6  am
Rain
Rain
Rain
Rain
Rain
Rain
Rain
Rain
Snow
Snow
39°
37°
37°
39°
34°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Rain
  • High: 46 °
  • Low: 34 °
  • Rain
  • Sunday
  • Snow
  • High: 41 °
  • Low: 16 °
  • Snow
  • Monday
  • Partly Cloudy
  • High: 27 °
  • Low: 25 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 46 °
  • Low: 28 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 34 °
  • Low: 16 °
  • Partly Cloudy

Forecast for Collinsville, Illinois

Updated: 3:00 PM CST on January 31, 2015

  • Saturday

    Mostly cloudy in the morning, then overcast with a chance of rain. High of 43F. Winds from the South at 5 to 10 mph. Chance of rain 60%.

  • Saturday Night

    Overcast with rain. Low of 34F. Winds from the SE at 5 to 10 mph. Chance of rain 90% with rainfall amounts near 0.4 in. possible.

  • Sunday

    Overcast with snow and rain, then rain in the afternoon. High of 41F. Winds from the SW at 5 to 15 mph. Chance of precipitation 90% .

  • Sunday Night

    Overcast with a chance of snow. Low of 16F with a windchill as low as 10F. Breezy. Winds from the NNW at 15 to 20 mph. Chance of snow 30%.

  • Monday

    Overcast in the morning, then partly cloudy. High of 27F. Winds from the NNW at 5 to 15 mph.

  • Monday Night

    Mostly cloudy. Low of 25F. Winds from the SE at 5 to 15 mph.

  • Tuesday

    Overcast. High of 46F. Winds from the SSW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy in the evening, then clear. Low of 28F. Winds from the South at 5 to 15 mph shifting to the West after midnight.

  • Wednesday

    Mostly cloudy in the morning, then overcast. High of 34F with a windchill as low as 21F. Winds from the North at 10 to 15 mph.

  • Wednesday Night

    Partly cloudy with a chance of snow. Low of 16F. Winds from the NNE at 10 to 15 mph. Chance of snow 60% with accumulations up to 3 in. possible.

  • Thursday

    Clear. High of 32F with a windchill as low as 7F. Winds from the NNE at 10 to 15 mph.

  • Thursday Night

    Clear. Low of 16F. Winds from the NE at 5 to 10 mph.

  • Friday

    Clear. High of 39F. Winds from the South at 5 to 10 mph.

  • Friday Night

    Clear. Fog overnight. Low of 25F with a windchill as low as 14F. Winds from the South at 10 to 15 mph.

  • Saturday

    Partly cloudy. High of 45F. Winds from the SSW at 5 to 15 mph.

  • Saturday Night

    Clear. Fog overnight. Low of 36F. Winds from the SSW at 10 to 15 mph.

  • Sunday

    Clear. High of 52F. Winds from the WSW at 5 to 15 mph.

  • Sunday Night

    Clear. Low of 34F. Winds less than 5 mph.

  • Monday

    Clear. High of 50F. Winds less than 5 mph.

  • Monday Night

    Clear. Fog overnight. Low of 34F. Winds less than 5 mph.

  • Tuesday

    Clear. Fog early. High of 52F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 28F. Winds from the NW at 5 to 10 mph.

  • Wednesday

    Clear. Fog early. High of 45F. Winds from the NW at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 28F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Collinsville West, Collinsville, IL

Updated: 6:24 PM CST

Temperature: 39.9 °F Dew Point: 28 °F Humidity: 62% Wind: East at 5.0 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: APRSWXNET Collinsville IL US, Collinsville, IL

Updated: 6:03 PM CST

Temperature: 40 °F Dew Point: 28 °F Humidity: 61% Wind: ESE at 3 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Tim and Carolyns yard, COLLINSVILLE, IL

Updated: 6:25 PM CST

Temperature: 40.5 °F Dew Point: 29 °F Humidity: 64% Wind: ENE at 2.0 mph Pressure: 30.42 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Rolling Meadows Dr, Maryville, IL

Updated: 6:24 PM CST

Temperature: 39.9 °F Dew Point: 23 °F Humidity: 50% Wind: NE at 2.0 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Barbarotto Compound, Maryville, IL

Updated: 6:24 PM CST

Temperature: 39.6 °F Dew Point: 30 °F Humidity: 69% Wind: ESE at 2.0 mph Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: APRSWXNET Troy IL US, Maryville, IL

Updated: 6:04 PM CST

Temperature: 39 °F Dew Point: 31 °F Humidity: 73% Wind: SE at 3 mph Pressure: 29.55 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Liberty Place, Troy, IL

Updated: 6:19 PM CST

Temperature: 39.3 °F Dew Point: 31 °F Humidity: 72% Wind: ESE at 5.0 mph Pressure: 29.54 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Nolan Creek Subdivision, OFallon, IL

Updated: 6:16 PM CST

Temperature: 40.4 °F Dew Point: 30 °F Humidity: 66% Wind: East at 4.0 mph Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Fairwood Hills, OFallon, IL

Updated: 6:24 PM CST

Temperature: 40.6 °F Dew Point: 27 °F Humidity: 58% Wind: ENE at 2.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Birmingham Drive, Glen Carbon, IL

Updated: 6:21 PM CST

Temperature: 39.6 °F Dew Point: 29 °F Humidity: 66% Wind: North at - Pressure: 30.24 in Hourly Precipitation: - Windchill: 40 °F Graphs

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

Updated: 6:24 PM CST

Temperature: 39.9 °F Dew Point: 27 °F Humidity: 60% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: New Goose, Fairview Heights, IL

Updated: 6:24 PM CST

Temperature: 40.7 °F Dew Point: 30 °F Humidity: 65% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Old Skewl, Fairview Heights, IL

Updated: 6:24 PM CST

Temperature: 22.6 °F Dew Point: 5 °F Humidity: 46% Wind: SE at 2.7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 23 °F Graphs

Location: Chalet Court, Fairview Heights, IL

Updated: 6:20 PM CST

Temperature: 40.3 °F Dew Point: 29 °F Humidity: 64% Wind: North at - Pressure: 30.26 in Hourly Precipitation: - Windchill: 40 °F Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 6:24 PM CST

Temperature: 40.1 °F Dew Point: 30 °F Humidity: 66% Wind: East at 2.0 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Prairie Crossing, OFallon, IL

Updated: 6:21 PM CST

Temperature: 39.4 °F Dew Point: 30 °F Humidity: 70% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Windchill: 39 °F Graphs

Location: Mallard Pointe, Troy, IL

Updated: 6:25 PM CST

Temperature: 39.7 °F Dew Point: 28 °F Humidity: 62% Wind: ESE at 4.5 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: Prairie Manor, Edwardsville, IL

Updated: 6:24 PM CST

Temperature: 38.3 °F Dew Point: 28 °F Humidity: 67% Wind: SSE at 5.6 mph Pressure: 8.86 in Hourly Precipitation: 0.00 in Windchill: 34 °F Graphs

Location: EAST GRANITE, Granite City, IL

Updated: 6:10 PM CST

Temperature: 41.2 °F Dew Point: 32 °F Humidity: 68% Wind: ESE at 1.7 mph Pressure: 30.15 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Kelly Greens Weather Station, Edwardsville, IL

Updated: 6:24 PM CST

Temperature: 38.7 °F Dew Point: 32 °F Humidity: 78% Wind: SE at 1.0 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: APRSWXNET Edwardsville IL US, Edwardsville, IL

Updated: 6:02 PM CST

Temperature: 39 °F Dew Point: 32 °F Humidity: 77% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Dunlap Lake, Edwardsville, IL

Updated: 6:17 PM CST

Temperature: 39.4 °F Dew Point: 33 °F Humidity: 77% Wind: East at 1.0 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: APRSWXNET Edwardsville IL US, Edwardsville, IL

Updated: 5:54 PM CST

Temperature: 41 °F Dew Point: 33 °F Humidity: 73% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Grand Ave, Edwardsville, IL

Updated: 6:24 PM CST

Temperature: 40.3 °F Dew Point: 33 °F Humidity: 74% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Nickel Plate Trail, Edwardsville, IL

Updated: 6:20 PM CST

Temperature: 39.4 °F Dew Point: 33 °F Humidity: 77% Wind: Calm Pressure: 30.20 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

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

Updated: 6:24 PM CST

Temperature: 40.1 °F Dew Point: 28 °F Humidity: 61% Wind: SSW at 5.1 mph Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: North Horner Park, Lebanon, IL

Updated: 6:25 PM CST

Temperature: 39.0 °F Dew Point: 27 °F Humidity: 61% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: APRSWXNET Belleville IL US, Belleville, IL

Updated: 6:02 PM CST

Temperature: 41 °F Dew Point: 22 °F Humidity: 47% Wind: ESE at 4 mph Pressure: 31.50 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Lake Christine, Belleville, IL

Updated: 6:24 PM CST

Temperature: 39.0 °F Dew Point: 29 °F Humidity: 68% Wind: SSE at 2.7 mph Pressure: 29.98 in Hourly Precipitation: - Windchill: 39 °F Graphs

Location: West End, Belleville, IL

Updated: 6:24 PM CST

Temperature: 40.6 °F Dew Point: 12 °F Humidity: 48% Wind: SSW at 3.0 mph Pressure: 31.51 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: APRSWXNET Shiloh IL US, Belleville, IL

Updated: 6:00 PM CST

Temperature: 40 °F Dew Point: 30 °F Humidity: 68% Wind: ENE at 3 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Branch Street, St. Louis, MO

Updated: 6:20 PM CST

Temperature: 43.0 °F Dew Point: - Humidity: 59% Wind: North at - Pressure: 29.75 in Hourly Precipitation: - Windchill: 43 °F Graphs

Location: BLAIR STREET, St. Louis, MO

Updated: 6:20 PM CST

Temperature: 43.5 °F Dew Point: - Humidity: 62% Wind: North at - Pressure: 29.68 in Hourly Precipitation: - Windchill: 44 °F Graphs

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

Updated: 6:25 PM CST

Temperature: 38.3 °F Dew Point: 28 °F Humidity: 67% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Belleville, IL, Belleville, IL

Updated: 6:24 PM CST

Temperature: 40.6 °F Dew Point: 12 °F Humidity: 31% Wind: NNE at 1.7 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Belleville - Southeast, Belleville, IL

Updated: 6:24 PM CST

Temperature: 39.9 °F Dew Point: 31 °F Humidity: 69% Wind: East at 1.6 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Downtown West, Saint Louis, MO

Updated: 6:21 PM CST

Temperature: 46.8 °F Dew Point: 35 °F Humidity: 63% Wind: North at - Pressure: 30.34 in Hourly Precipitation: - Windchill: 47 °F Graphs

Location: Wood River (East End), Wood River, IL

Updated: 6:22 PM CST

Temperature: 40.8 °F Dew Point: 30 °F Humidity: 64% Wind: Calm Pressure: 29.87 in Hourly Precipitation: - Windchill: 41 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated aviation 
National Weather Service St Louis MO 
613 PM CST Sat Jan 31 2015 


Short term: (through Sunday night) 
issued at 324 PM CST Sat Jan 31 2015 


No changes to current headlines. Focus continues to be the system 
approaching the County Warning Area thru sun. 


Mdl solns continue to trend warmer tonight and into sun. The 
rap/hrrr solns are the warmest, suggesting the entire County Warning Area remains 
warm enuf for rain thru at least midnight tonight. The Gem being the 
coldest with the NAM/local WRF/European model (ecmwf) only slightly warmer. These 
cooler solns also suggest the 850 mb 0 degree c isotherm remains S 
of the 850mb low track. Believe this is the result of two features. 
First, adiabatic cooling due to dynamic lift across the region and 
second, evaporative cooling, albeit not much, at the onset of 
precip. The column quickly becomes saturated this evening with the 
current precip shield moving newd across thru the area, eliminating 
the second issue. 


Question then turns to if the very strong warm air advection/frontogenetical 
forcing can overcome the cooling due to lift and cause precip to 
either turn back to or mix with rain late tonight. Forecast soundings 
across the nrn portions of the County Warning Area continue to show the lowest 2kft 
to be at or just below 0c. The bl will remain as-is thru the morning 
hours as the 850 mb low. By 18z sun, cold air advection quickly takes over the nrn 
third to half of the County Warning Area. However, as the main trof digs and the 
system deepens, much of the County Warning Area is dry-slotted and bulk of the 
remaining precip is due to the def zone. 


Some questions remain with this system increasing the uncertainty. 
Mdls have come in with more qpf, esp later tonight. If these higher 
quantitative precipitation forecast amnts and colder solns verify, the going forecast may be too 
low. With a few minor tweaks, overall, snowfall forecast is very 
close to the prev forecast. 


Long term: (monday through next saturday) 
issued at 324 PM CST Sat Jan 31 2015 


(monday-tuesday) 


The work week will start off on a cold note featuring much below 
average temps with cyclonic flow and lots of remnant stratus early 
Monday morning. The low clouds however should clear southward during 
the morning as high pressure builds into the area. By afternoon warm 
advection aloft is already underway and heights are rising in the 
wake of the departing upper trof. This will be accompanied by lots 
of high clouds overspreading the region from afternoon and 
continuing into Monday night as the surface high retreats. The pick 
day of the week should be Tuesday with a strong warm advection 
regime forecast. This should result in a brief bump in highs to 
above normal readings. The exception is possibly across far 
northeast Missouri into west central Illinois where there will be 
snow cover and a bit of high cloudiness. 


(Wednesday-saturday) 


Cold weather and below average temperatures will once again take 
hold during the later part of the upcoming week. The flow aloft 
initially across much of the conus will be broadly cyclonic anchored 
by an upper vortex in the northern Hudson Bay region. A pronounced 
shortwave migrating through this flow aloft will send a rather 
strong cold front through the area late Tuesday night-early 
Wednesday. The biggest uncertainties during the extended forecast 
time frame deal with the Wednesday-Wednesday night period in the 
wake of this front. The GFS and CMC Gem both have another 
progressive disturbance lagging in the cyclonic flow. They both 
suggest that this disturbance and the associated forcing and 
resultant frontogenesis will produce a Post-frontal WNW-ESE oriented 
band of accumulating snow. The European model (ecmwf) on the other hand lacks this 
scenario and has high pressure dominating, however suggests a warm 
advection snow band may occur Thursday. At this point I have a 
little more confidence in the GFS/Gem solution albeit low, and will 
continue with some low pops. 


By the beginning of the next weekend, heights aloft are rising as 
the mean longwave trof axis shifts off the eastern Seaboard and warm 
advection is underway signaling moderating temperatures. 


Glass 


&& 


Aviation: (for the 00z tafs through 00z Sunday evening) 
issued at 519 PM CST Sat Jan 31 2015 


Specifics for kuin: a winter storm system will affect west central 
Illinois through Sunday. As the colder air arrives overnight, rain will 
change over to snow and then start to accumulate at KUIN. The most 
intense snowfall is expected sometime between 15-21z. Winds will 
become northwesterly and gust to 20-25 kts on the back side of the 
system. 


Specifics for kcou: kcou will be on the edge of a winter storm 
system which is affecting the region. Some light snow could 
occasionally mix in with the rain, but rain should be the dominant 
precipitation type until after the cold front moves through on 
late Sunday afternoon, but precipitation will also be winding down 
around the time that it becomes cold enough for snow. Winds will 
become northwesterly and gust to 20-25 kts on the back side of the 
system. Although there is initially some dry air to overcome, 
ceilings should deteriorate to IFR by 06z. 


Specifics for kstl, ksus, kcps: St. Louis Metro area taf sites 
will be on the southern edge of a winter storm system which is 
affecting the region. The dominant precipitation type should 
remain pure rain until colder air arrives with the cold front on 
Sunday afternoon. Winds will become northerly and gust to 20-25 
kts on the back side of the system. Although there is initially 
some dry air to overcome, ceilings should deteriorate to IFR 
overnight. 


Kanofsky 


&& 


Lsx watches/warnings/advisories: 
MO...Winter Weather Advisory from 9 PM this evening to 9 PM CST 
Sunday for Marion MO-Monroe MO-Pike MO-Ralls MO-Shelby MO. 


Winter Storm Warning from 9 PM this evening to 9 PM CST Sunday 
for Knox MO-Lewis MO. 


Illinois...Winter Weather Advisory from 9 PM this evening to 9 PM CST 
Sunday for Pike Illinois. 


Winter Storm Warning from 9 PM this evening to 9 PM CST Sunday 
for Adams Illinois-Brown Illinois. 


&& 


$$ 


Weather forecast office lsx 



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