Collinsville, Illinois Weather Conditions

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Current Conditions

  • 54°
  • Clear
  • Wind: SE 9 mph
  • Humidity: 49%
  • Visibility: 10.0 miles
  • Dew Point: 35°
  • Pressure: 29.96 in. 0

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Next 12 Hours

1  am
4  am
7  am
10  am
1  pm
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Thunderstorm
T-storms
55°
52°
45°
59°
70°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Thunderstorm
  • High: 73 °
  • Low: 48 °
  • T-Storms
  • Friday
  • Clear
  • High: 77 °
  • Low: 52 °
  • Clear
  • Saturday
  • Chance of a Thunderstorm
  • High: 72 °
  • Low: 50 °
  • Chance of a Thunderstorm
  • Sunday
  • Chance of a Thunderstorm
  • High: 75 °
  • Low: 55 °
  • Chance of a Thunderstorm
  • Monday
  • Chance of a Thunderstorm
  • High: 77 °
  • Low: 54 °
  • Chance of T-Storms

Forecast for Collinsville, Illinois

Updated: 10:00 PM CDT on April 23, 2014

  • Thursday

    Overcast with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 73F. Breezy. Winds from the South at 15 to 20 mph with gusts to 30 mph. Chance of rain 80% with rainfall amounts near 0.3 in. possible.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then clear. Low of 48F. Winds from the West at 10 to 15 mph. Chance of rain 50% with rainfall amounts near 0.4 in. possible.

  • Friday

    Clear. High of 77F. Winds from the WSW at 5 to 10 mph.

  • Friday Night

    Clear in the evening, then partly cloudy. Low of 52F. Winds from the South at 5 to 10 mph.

  • Saturday

    Partly cloudy. High of 72F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then overcast. Low of 50F. Winds from the East at 10 to 15 mph.

  • Sunday

    Partly cloudy in the morning, then overcast with a chance of a thunderstorm and rain. High of 75F. Winds from the ESE at 10 to 15 mph. Chance of rain 20%.

  • Sunday Night

    Overcast with a chance of a thunderstorm and rain. Fog overnight. Low of 55F. Winds from the ESE at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Monday

    Overcast with a chance of a thunderstorm and rain in the morning, then mostly cloudy. High of 77F. Breezy. Winds from the SSE at 15 to 20 mph. Chance of rain 40%.

  • Monday Night

    Partly cloudy with a chance of rain. Low of 54F. Winds from the SSE at 5 to 15 mph. Chance of rain 40%.

  • Tuesday

    Mostly cloudy with a chance of a thunderstorm. High of 73F. Winds from the NE at 5 to 20 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Tuesday Night

    Partly cloudy with a chance of rain. Low of 34F. Breezy. Winds from the North at 10 to 20 mph. Chance of rain 40%.

  • Wednesday

    Partly cloudy with a chance of rain. High of 66F. Breezy. Winds from the NNW at 15 to 20 mph. Chance of rain 20%.

  • Wednesday Night

    Clear. Low of 37F. Winds from the NW at 5 to 10 mph.

  • Thursday

    Clear. High of 64F. Winds from the NW at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 48F. Winds from the NW at 5 to 10 mph.

  • Friday

    Clear. High of 70F. Winds from the NW at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 48F. Winds less than 5 mph.

  • Saturday

    Clear. High of 73F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 50F. Winds less than 5 mph.

  • Sunday

    Clear. High of 68F. Winds less than 5 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 50F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Collinsville West, Collinsville, IL

Updated: 12:49 AM CDT

Temperature: 53.9 °F Dew Point: 36 °F Humidity: 51% Wind: ESE at 4.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Rolling Meadows Dr, Maryville, IL

Updated: 12:49 AM CDT

Temperature: 53.2 °F Dew Point: 30 °F Humidity: 40% Wind: NE at 1.6 mph Pressure: 29.32 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Barbarotto Compound, Maryville, IL

Updated: 12:49 AM CDT

Temperature: 51.9 °F Dew Point: 37 °F Humidity: 57% Wind: ESE at 1.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Maryville, IL

Updated: 12:49 AM CDT

Temperature: 53.2 °F Dew Point: 38 °F Humidity: 57% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 12:49 AM CDT

Temperature: 52.9 °F Dew Point: 40 °F Humidity: 62% Wind: Calm Pressure: 29.61 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: New Goose, Fairview Heights, IL

Updated: 12:49 AM CDT

Temperature: 54.0 °F Dew Point: 38 °F Humidity: 54% Wind: ESE at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Old Skewl, Fairview Heights, IL

Updated: 12:49 AM CDT

Temperature: 53.0 °F Dew Point: 33 °F Humidity: 47% Wind: ESE at 2.7 mph Pressure: 18.11 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: STL Metro East, Edwardsville, IL

Updated: 12:48 AM CDT

Temperature: 49.6 °F Dew Point: 18 °F Humidity: 28% Wind: ENE at 2.7 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 12:48 AM CDT

Temperature: 52.5 °F Dew Point: 38 °F Humidity: 58% Wind: ESE at 2.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 9:35 PM CDT

Temperature: 60 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 11:50 PM CDT

Temperature: 55 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Kelly Greens Weather Station, Edwardsville, IL

Updated: 12:49 AM CDT

Temperature: 53.4 °F Dew Point: 38 °F Humidity: 55% Wind: East at 2.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Dunlap Lake, Edwardsville, IL

Updated: 12:49 AM CDT

Temperature: 54.0 °F Dew Point: 38 °F Humidity: 55% Wind: ESE at 1.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Grand Ave, Edwardsville, IL

Updated: 12:49 AM CDT

Temperature: 54.0 °F Dew Point: 37 °F Humidity: 52% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Nickel Plate Trail, Edwardsville, IL

Updated: 12:45 AM CDT

Temperature: 54.1 °F Dew Point: 38 °F Humidity: 54% Wind: SE at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: North Horner Park, Lebanon, IL

Updated: 11:43 PM CDT

Temperature: 53.0 °F Dew Point: 41 °F Humidity: 63% Wind: East at 2.0 mph Pressure: 29.36 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: West End, Belleville, IL

Updated: 12:48 AM CDT

Temperature: 55.8 °F Dew Point: 17 °F Humidity: 40% Wind: South at 4.0 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Shiloh IL US, Belleville, IL

Updated: 12:03 AM CDT

Temperature: 53 °F Dew Point: 38 °F Humidity: 56% Wind: ESE at 3 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Belleville, IL, Belleville, IL

Updated: 12:45 AM CDT

Temperature: 52.7 °F Dew Point: 24 °F Humidity: 32% Wind: North at 1.6 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Rosewood Heights, East Alton, IL

Updated: 12:49 AM CDT

Temperature: 54.7 °F Dew Point: 33 °F Humidity: 44% Wind: SSE at 2.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Millstadt, Millstadt, IL

Updated: 12:49 AM CDT

Temperature: 52.0 °F Dew Point: 37 °F Humidity: 57% Wind: SE at 7.2 mph Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Shaw/Tower Grove, St. Louis, MO

Updated: 12:48 AM CDT

Temperature: 55.8 °F Dew Point: 34 °F Humidity: 43% Wind: SSE at 2.7 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hunters Creek, Mascoutah, IL

Updated: 12:48 AM CDT

Temperature: 52.8 °F Dew Point: 39 °F Humidity: 59% Wind: ESE at 2.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: RAWS MBOT MO US, Saint Louis, MO

Updated: 12:19 AM CDT

Temperature: 56 °F Dew Point: 34 °F Humidity: 43% Wind: SSE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Milton Area - Oscar, Alton, IL

Updated: 12:35 AM CDT

Temperature: 56.3 °F Dew Point: 34 °F Humidity: 44% Wind: ESE at 10.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hamel, IL 55/140, Worden, IL

Updated: 12:49 AM CDT

Temperature: 52.2 °F Dew Point: 38 °F Humidity: 58% Wind: ESE at 6.3 mph Pressure: 28.48 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Jim's Back Yard, Trenton, IL

Updated: 12:49 AM CDT

Temperature: 52.8 °F Dew Point: 38 °F Humidity: 58% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: South Hampton, Saint Louis, MO

Updated: 12:49 AM CDT

Temperature: 56.5 °F Dew Point: 37 °F Humidity: 48% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Windchill: - 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 
1203 am CDT Thu Apr 24 2014 


Short term: (through late tonight) 
issued at 236 PM CDT Wed Apr 23 2014 


(tonight) 


Mid/upper level ridge axis will pass overhead early tonight with next 
system organizing over the south-Central Plains. Expect an area of showers 
and thunderstorms to organize overnight aided by strong forcing for 
large-scale ascent via deepening trough and strong low-level moist/warm 
advection. This area of showers and storms should stay west of the area 
tonight...but may approach portions of central and northeastern Missouri 
by daybreak. Sky cover should increase overnight ahead of aforementioned 
system with brisk southeasterly winds continuing throughout the night. 
For these reasons...went a few degrees above warmer mav guidance in most 
locations. 




Gosselin 


Long term: (thursday through next wednesday) 
issued at 329 PM CDT Wed Apr 23 2014 


(thursday through saturday) 


Main focus for thurs will be precip chances. Not much change from 
the prev forecast other than slowing timing down a bit. Some 
questions remain regarding exactly how precip on thurs will play 
out. Believe that the morning hours will be similar to what is 
occurring now. Expect precip to intensify during the afternoon and 
into the evening along and just ahead of the cdfnt, if enuf heating 
can occur. Am becoming more concerned of an isod thunderstorms and rain becoming 
strong to severe, mainly across portions of central MO. However, 
this is highly conditional on the amount of heating that can occur 
during the day. Will therefore not mention for now and allow the 
night shift to reevaluate. 


Beyond thurs, the remainder of the period shud be dry. Did keep low 
chance pops for Sat as a wrmfnt lifts thru the region due to 
uncertainty. However, with height rises over the area and better 
forcing across Kansas and wrn MO, believe bulk of precip will remain west 
of the County Warning Area. 


The focus quickly turns to temps for Fri and Sat. Differences among 
mdls leads to a lot of uncertainty for these days. Given the past 
couple of warm up events, will trend twd the GFS/local WRF solns. 
These solns strong SW to west flow at the sfc with the thermal ridge 
pushing into the region. This, coupled with deep mixing, shud allow 
temps to reach the 80s for Fri. Sat shud be a little cooler as a 
weak cdfnt drops swd across the region, but still a warm day. 


(Sunday through wednesday) 


While specifics may differ among mdl solns, general trends are in 
fairly good agreement thru the extd period. Mdls suggest an initial 
surge of thunderstorms and rain will push thru the region on sun thru Mon as a large 
low system approaches the area. This system has a threat of severe 
weather for much of the County Warning Area. As this system is still 5 plus days 
out, time will not be spent discussing details that are likely to 
change many times by the end of this weekend. 


By Mon night, a short wave associated with the upper low progd to be over 
the nrn Atlantic, will approach the upper low over the MO region. 
After a brief fujiwhara interaction, these two low centers are progd 
to combine forming one large low system. Mdls differ regarding 
placement of this interaction, which will be vital to determining 
where precip will occur associated with this low. If the interaction 
is further E, the low shud eject precip ewd out of the region, per 
the GFS soln. If it is further W, per the ECMWF, precip shud linger 
for at least a while. 


Regardless, both solns suggest much colder temps will remain locked 
in place thru the remainder of next week. Will take a closer look at 
temps for Wed and beyond tomorrow, but going forecast of mid 50s may 
have too much of an influence on climo and need to be lowered with 
future updates. 




Tilly 


&& 


Aviation: (for the 06z tafs through 06z Thursday night) 
issued at 1155 PM CDT Wed Apr 23 2014 


VFR flight conditions/mid-high clouds will persist overnight with modest 
southeast surface winds. A southerly low level jet has developed and is broader 
than originally anticipated, and now have marginal low level wind shear conditions 
at all taf sites. Precipitation timing is still a tough call on 
Thursday, but overall the trend and timing is slower than previous 
forecasts. Expecting shra and possibly a few rumbles of thunder to 
impact kcou-KUIN in the 16-18z time frame with this activity 
weakening as it moves east. Better potential for organized showers 
and thunderstorms at all tafs sites will be on Thursday afternoon/evening 
along and ahead of a cold front where I have conditions lowering 
to MVFR. 


Specifics for kstl: 


VFR flight conditions/mid-high clouds will persist overnight with modest 
southeast surface winds. A southerly low level jet has developed and is broader 
than originally anticipated, and local radar vwps suggest marginal low level wind shear 
conditions through 14-15z. Best potential for organized showers 
and thunderstorms at kstl will be between 22-02z on Thursday 
afternoon/evening along and ahead of a cold front where I have 
conditions lowering to MVFR. 


Glass 


&& 


Lsx watches/warnings/advisories: 
MO...none. 
Illinois...none. 
&& 


$$ 


Weather forecast office lsx 



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