Collinsville, Illinois Weather Conditions

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Current Conditions

  • 44°
  • Clear
  • Wind: Calm
  • Humidity: 85%
  • Visibility: 10.0 miles
  • Dew Point: 40°
  • Pressure: 30.24 in. +

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Next 12 Hours

4  am
7  am
10  am
1  pm
4  pm
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
45°
43°
50°
59°
63°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Clear
  • High: 63 °
  • Low: 41 °
  • Clear
  • Thursday
  • Partly Cloudy
  • High: 63 °
  • Low: 52 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 73 °
  • Low: 55 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 75 °
  • Low: 52 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 77 °
  • Low: 57 °
  • Partly Cloudy

Forecast for Collinsville, Illinois

Updated: 4:00 AM CDT on October 22, 2014

  • Wednesday

    Clear. High of 63F. Winds from the East at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 41F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 63F. Winds from the South at 5 to 10 mph.

  • Thursday Night

    Partly cloudy. Low of 52F. Winds less than 5 mph.

  • Friday

    Partly cloudy. High of 73F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy in the evening, then clear. Low of 55F. Winds from the SSW at 5 to 10 mph.

  • Saturday

    Clear in the morning, then partly cloudy. High of 75F. Winds from the WNW at 5 to 10 mph.

  • Saturday Night

    Partly cloudy in the evening, then clear. Low of 52F. Winds from the North at 5 to 10 mph.

  • Sunday

    Partly cloudy. High of 77F. Winds from the SE at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 57F. Winds from the SSE at 10 to 15 mph.

  • Monday

    Mostly cloudy. High of 77F. Breezy. Winds from the South at 10 to 20 mph.

  • Monday Night

    Partly cloudy. Low of 54F. Winds from the South at 10 to 15 mph.

  • Tuesday

    Mostly cloudy. High of 70F. Winds from the SW at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy. Low of 46F. Winds from the North at 5 to 10 mph.

  • Wednesday

    Overcast. High of 63F. Winds from the ENE at 5 to 10 mph.

  • Wednesday Night

    Mostly cloudy with a chance of rain. Low of 46F. Winds from the South at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy. Fog early. High of 64F. Winds less than 5 mph.

  • Thursday Night

    Clear. Fog overnight. Low of 39F. Winds less than 5 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm. Fog early. High of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 39F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday

    Clear. High of 61F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 39F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Collinsville West, Collinsville, IL

Updated: 4:34 AM CDT

Temperature: 43.6 °F Dew Point: 41 °F Humidity: 90% Wind: ESE at 3.0 mph Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Rolling Meadows Dr, Maryville, IL

Updated: 4:34 AM CDT

Temperature: 45.0 °F Dew Point: 38 °F Humidity: 76% Wind: ENE at 1.3 mph Pressure: 29.56 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Barbarotto Compound, Maryville, IL

Updated: 4:34 AM CDT

Temperature: 41.0 °F Dew Point: 39 °F Humidity: 93% Wind: East at 1.0 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Liberty Place, Troy, IL

Updated: 4:29 AM CDT

Temperature: 41.5 °F Dew Point: 39 °F Humidity: 92% Wind: Calm Pressure: 29.60 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: MesoWest I -55/64/70 @ Poplar St Bridge IL US ILDOT, Fairmont City, IL

Updated: 3:55 AM CDT

Temperature: 46 °F Dew Point: 43 °F Humidity: 87% Wind: ENE at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Nolan Creek, OFallon, IL

Updated: 4:32 AM CDT

Temperature: 41.3 °F Dew Point: 40 °F Humidity: 93% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

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

Updated: 4:34 AM CDT

Temperature: 39.2 °F Dew Point: 39 °F Humidity: 99% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: New Goose, Fairview Heights, IL

Updated: 4:34 AM CDT

Temperature: 43.6 °F Dew Point: 41 °F Humidity: 90% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Old Skewl, Fairview Heights, IL

Updated: 4:34 AM CDT

Temperature: 44.5 °F Dew Point: 38 °F Humidity: 79% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: StormGrl2001, Fairview Heights, IL

Updated: 4:22 AM CDT

Temperature: 40.8 °F Dew Point: 38 °F Humidity: 89% Wind: Calm Pressure: 30.19 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 4:34 AM CDT

Temperature: 41.6 °F Dew Point: 39 °F Humidity: 91% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: Prairie Crossing, OFallon, IL

Updated: 4:22 AM CDT

Temperature: 41.2 °F Dew Point: 39 °F Humidity: 93% Wind: ESE at 2.2 mph Pressure: 30.02 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Mallard Pointe, Troy, IL

Updated: 4:34 AM CDT

Temperature: 42.8 °F Dew Point: 42 °F Humidity: 98% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: EAST GRANITE, Granite City, IL

Updated: 4:29 AM CDT

Temperature: 45.0 °F Dew Point: 40 °F Humidity: 84% Wind: Calm Pressure: 30.22 in Hourly Precipitation: - Windchill: 45 °F Graphs

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

Updated: 2:00 AM CDT

Temperature: 49 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

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

Updated: 1:35 AM CDT

Temperature: 47 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Kelly Greens Weather Station, Edwardsville, IL

Updated: 4:34 AM CDT

Temperature: 39.5 °F Dew Point: 38 °F Humidity: 95% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Dunlap Lake, Edwardsville, IL

Updated: 4:28 AM CDT

Temperature: 41.2 °F Dew Point: 40 °F Humidity: 95% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Grand Ave, Edwardsville, IL

Updated: 4:33 AM CDT

Temperature: 41.2 °F Dew Point: 39 °F Humidity: 93% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Nickel Plate Trail, Edwardsville, IL

Updated: 4:30 AM CDT

Temperature: 42.2 °F Dew Point: 41 °F Humidity: 94% Wind: Calm Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

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

Updated: 4:34 AM CDT

Temperature: 42.6 °F Dew Point: 42 °F Humidity: 99% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: North Horner Park, Lebanon, IL

Updated: 4:34 AM CDT

Temperature: 39.0 °F Dew Point: 26 °F Humidity: 60% Wind: Calm Pressure: 29.50 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Camelot Estates, Belleville, IL

Updated: 4:27 AM CDT

Temperature: 41.2 °F Dew Point: 41 °F Humidity: 99% Wind: Calm Pressure: 30.14 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: West End, Belleville, IL

Updated: 4:34 AM CDT

Temperature: 45.0 °F Dew Point: 28 °F Humidity: 70% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: APRSWXNET Shiloh IL US, Belleville, IL

Updated: 4:03 AM CDT

Temperature: 44 °F Dew Point: 41 °F Humidity: 89% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Branch Street, St. Louis, MO

Updated: 4:30 AM CDT

Temperature: 47.5 °F Dew Point: - Humidity: 79% Wind: North at - Pressure: 29.79 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: BLAIR STREET, St. Louis, MO

Updated: 4:30 AM CDT

Temperature: 48.0 °F Dew Point: - Humidity: 83% Wind: North at - Pressure: 29.72 in Hourly Precipitation: - Windchill: 48 °F Graphs

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

Updated: 4:34 AM CDT

Temperature: 42.6 °F Dew Point: 42 °F Humidity: 99% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Belleville, IL, Belleville, IL

Updated: 4:34 AM CDT

Temperature: 43.5 °F Dew Point: 33 °F Humidity: 67% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: 44 °F Graphs

Location: Patriots, Scott AIr Force Base, IL

Updated: 4:29 AM CDT

Temperature: 41.0 °F Dew Point: 37 °F Humidity: 85% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Rosewood Heights, East Alton, IL

Updated: 4:34 AM CDT

Temperature: 43.1 °F Dew Point: 40 °F Humidity: 87% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Millstadt, Millstadt, IL

Updated: 4:34 AM CDT

Temperature: 41.2 °F Dew Point: 34 °F Humidity: 75% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

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

Updated: 4:27 AM CDT

Temperature: 46.0 °F Dew Point: 41 °F Humidity: 83% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Hunters Creek, Mascoutah, IL

Updated: 4:34 AM CDT

Temperature: 40.8 °F Dew Point: 39 °F Humidity: 93% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Milton Area - Oscar, Alton, IL

Updated: 4:26 AM CDT

Temperature: 41.9 °F Dew Point: 40 °F Humidity: 93% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

Location: MesoWest GARD IL US UPR, Hamel, IL

Updated: 3:40 AM CDT

Temperature: 41 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

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

Updated: 1:28 AM CDT

Temperature: 44.6 °F Dew Point: 41 °F Humidity: 88% Wind: ESE at 6.3 mph Pressure: 30.24 in Hourly Precipitation: - Windchill: 41 °F Graphs

Location: Forest Park, St. Louis, MO

Updated: 4:30 AM CDT

Temperature: 46.9 °F Dew Point: - Humidity: 76% Wind: North at - Pressure: 29.48 in Hourly Precipitation: 0.00 in Windchill: 47 °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 
1146 PM CDT Tue Oct 21 2014 


Short term: (through late tonight) 
issued at 327 PM CDT Tue Oct 21 2014 


Surface ridge extending from Wisconsin south-southwest through the 
Mississippi Valley into the southeast plains will drift to the 
southeast tonight. The upper level ridge will continue to build 
overhead keeping the sky clear. Expect light and variable surface 
wind this evening to turn to the east southeast overnight as the 
surface ridge drifts by. With good radiational cooling conditions 
for at least part of the night, expect temperatures to dip down to 
near or slightly below this morning's lows. Used a combination of 
consensus MOS and mav for forecast lows tomorrow morning. 


Carney 


Long term: (wednesday through next tuesday) 
issued at 327 PM CDT Tue Oct 21 2014 


(wednesday through friday) 


Dry weather is expected through Wednesday evening as a upper ridge 
currently over the plains will move across the area. Then will 
continue a slight chance for showers late on Wednesday night over 
northeast and central Missouri as well as west central Illinois as 
the GFS/NAM/ECMWF are all in good agreement that a upper trough will 
approach the area. This trough will move quickly across the area on 
Thursday, though moisture will be limited with this system, so have 
kept rain chances associated with this system in area mainly north 
of I-70 where best ascent will be. Then subsidence will begin to 
build into the area behind the trough, so expect dry weather to 
return to the area for Thursday night and Friday. 


Went toward the warmer GFS MOS for highs the next few days which 
matches well with mixing down 900mb temperatures. 


(Saturday through next tuesday) 


Weekend still looks dry and warm for late October as both the GFS 
and European model (ecmwf) showing a large upper ridge building over the area. 850mb 
temperatures will climb to near 15c as surface winds become 
southerly by Sunday. Both the GFS and European model (ecmwf) MOS guidance support 
high temperatures well into the 70s Saturday into Monday. By early 
next week, the latest runs of the GFS/European model (ecmwf) are in good agreement 
that a large trough will be moving through the plains into the 
Midwest with the attendant cold front reaching Missouri and 
Illinois by Monday night. Will carry just low chances for showers 
as there have been run-to-run model continuity issues which will 
ultimately determine the timing of the rain early next week. 


Britt 


&& 


Aviation: (for the 06z tafs through 06z Wednesday night) 
issued at 1137 PM CDT Tue Oct 21 2014 


Surface high pressure extending from the southern Great Lakes 
region through the mid-Mississippi and lower Ohio Valley regions 
will slowly move southeastward through Wednesday evening. Surface 
winds will generally be easterly tonight then become east- 
southeast on Wednesday. Skies will remainn clear expect for some 
local river fog possible for ksus and kcps where visibilities may 
drop to 2 to 5 sm. 


Specifics for kstl: northeast surface winds will become easterly 
by daybreak 3 to 5 kts. Winds will slight shift to the southeast 
by late morning or mid-day. Wind speeds will be under 5 kts 
tonight and then 7 to 9 kts late Wednesday morning through early afternoon. 
Skies will remain clear. 


Przybylinski 


&& 


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


$$ 


Weather forecast office lsx 



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