Collinsville, Illinois Weather Conditions

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Current Conditions

  • 82°
  • Mostly Cloudy
  • Wind: SSE 6 mph
  • Humidity: 44%
  • Visibility: 10.0 miles
  • Dew Point: 58°
  • Pressure: 30.03 in. -
  • Heat Index: 82

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Next 12 Hours

7  pm
10  pm
1  am
4  am
7  am
Overcast
Overcast
Partly Cloudy
Partly Cloudy
Overcast
Overcast
Fog
Fog
Chance of a Thunderstorm
Chance of T-storms
82°
68°
63°
59°
64°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Mostly Cloudy
  • High: 86 °
  • Low: 59 °
  • Mostly Cloudy
  • Thursday
  • Chance of a Thunderstorm
  • High: 86 °
  • Low: 64 °
  • Chance of a Thunderstorm
  • Friday
  • Chance of a Thunderstorm
  • High: 84 °
  • Low: 59 °
  • Chance of a Thunderstorm
  • Saturday
  • Chance of a Thunderstorm
  • High: 86 °
  • Low: 61 °
  • Chance of T-Storms
  • Sunday
  • Partly Cloudy
  • High: 86 °
  • Low: 57 °
  • Partly Cloudy

Forecast for Collinsville, Illinois

Updated: 4:00 PM CDT on July 30, 2014

  • Wednesday

    Clear in the morning, then partly cloudy. High of 86F. Winds less than 5 mph.

  • Wednesday Night

    Overcast. Fog overnight. Low of 59F. Winds less than 5 mph.

  • Thursday

    Overcast with a chance of a thunderstorm and a chance of rain in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 86F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy in the evening, then clear. Low of 64F. Winds less than 5 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 84F. Winds less than 5 mph. Chance of rain 20%.

  • Friday Night

    Clear with a chance of a thunderstorm and rain after midnight. Low of 59F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday

    Partly cloudy with a chance of a thunderstorm and rain in the afternoon. High of 86F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 61F. Winds from the NNE at 5 to 10 mph.

  • Sunday

    Partly cloudy. Fog early. High of 86F. Winds from the NNE at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 57F. Winds from the NE at 5 to 10 mph.

  • Monday

    Clear. High of 88F. Winds less than 5 mph.

  • Monday Night

    Clear. Fog overnight. Low of 55F. Winds from the ESE at 5 to 10 mph.

  • Tuesday

    Partly cloudy. High of 91F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 64F. Winds from the SE at 5 to 10 mph.

  • Wednesday

    Partly cloudy. High of 93F. Winds less than 5 mph.

  • Wednesday Night

    Clear with a chance of a thunderstorm. Fog overnight. Low of 64F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy. High of 84F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm. Fog overnight. Low of 59F. Winds less than 5 mph. Chance of rain 50%.

  • Friday

    Mostly cloudy with a chance of a thunderstorm. Fog early. High of 79F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

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

  • Saturday

    Partly cloudy with a chance of a thunderstorm. High of 84F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.

  • Sunday

    Clear. High of 77F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 63F. Winds from the NE at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Collinsville West, Collinsville, IL

Updated: 5:28 PM CDT

Temperature: 83.0 °F Dew Point: 54 °F Humidity: 37% Wind: SE at 1.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Rolling Meadows Dr, Maryville, IL

Updated: 6:16 PM CDT

Temperature: 82.0 °F Dew Point: 51 °F Humidity: 34% Wind: West at 1.6 mph Pressure: 29.38 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Barbarotto Compound, Maryville, IL

Updated: 6:16 PM CDT

Temperature: 81.2 °F Dew Point: 58 °F Humidity: 45% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Liberty Place, Troy, IL

Updated: 6:08 PM CDT

Temperature: 81.1 °F Dew Point: 58 °F Humidity: 46% Wind: NNE at 2.0 mph Pressure: 29.41 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

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

Updated: 5:40 PM CDT

Temperature: 83 °F Dew Point: 58 °F Humidity: 42% Wind: ENE at 4 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Nolan Creek, OFallon, IL

Updated: 6:03 PM CDT

Temperature: 81.4 °F Dew Point: 57 °F Humidity: 44% Wind: ESE at 3.0 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

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

Updated: 6:16 PM CDT

Temperature: 78.8 °F Dew Point: 62 °F Humidity: 56% Wind: Calm Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: New Goose, Fairview Heights, IL

Updated: 6:15 PM CDT

Temperature: 81.7 °F Dew Point: 61 °F Humidity: 50% Wind: Calm Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Old Skewl, Fairview Heights, IL

Updated: 6:16 PM CDT

Temperature: 77.3 °F Dew Point: 57 °F Humidity: 50% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: StormGrl2001, Fairview Heights, IL

Updated: 6:10 PM CDT

Temperature: 81.3 °F Dew Point: 61 °F Humidity: 51% Wind: SE at 1.7 mph Pressure: 30.01 in Hourly Precipitation: - Heat Index: 82 °F Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 6:14 PM CDT

Temperature: 82.2 °F Dew Point: 61 °F Humidity: 48% Wind: SW at 2.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Mallard Pointe, Troy, IL

Updated: 6:15 PM CDT

Temperature: 84.6 °F Dew Point: 61 °F Humidity: 45% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

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

Updated: 5:25 PM CDT

Temperature: 83 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Kelly Greens Weather Station, Edwardsville, IL

Updated: 6:16 PM CDT

Temperature: 79.6 °F Dew Point: 60 °F Humidity: 51% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Dunlap Lake, Edwardsville, IL

Updated: 6:07 PM CDT

Temperature: 85.0 °F Dew Point: 61 °F Humidity: 44% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Grand Ave, Edwardsville, IL

Updated: 6:15 PM CDT

Temperature: 79.7 °F Dew Point: 62 °F Humidity: 54% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Nickel Plate Trail, Edwardsville, IL

Updated: 6:15 PM CDT

Temperature: 76.7 °F Dew Point: 61 °F Humidity: 59% Wind: Calm Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

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

Updated: 6:15 PM CDT

Temperature: 80.1 °F Dew Point: 60 °F Humidity: 51% Wind: SSE at 1.3 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: North Horner Park, Lebanon, IL

Updated: 6:15 PM CDT

Temperature: 83.0 °F Dew Point: 71 °F Humidity: 68% Wind: Calm Pressure: 29.56 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: West End, Belleville, IL

Updated: 6:15 PM CDT

Temperature: 81.3 °F Dew Point: 36 °F Humidity: 38% Wind: West at 6.0 mph Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: APRSWXNET Shiloh IL US, Belleville, IL

Updated: 5:03 PM CDT

Temperature: 81 °F Dew Point: 58 °F Humidity: 46% Wind: East at 2 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

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

Updated: 6:15 PM CDT

Temperature: 81.0 °F Dew Point: 54 °F Humidity: 40% Wind: SSW at 1.6 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Belleville, IL, Belleville, IL

Updated: 6:16 PM CDT

Temperature: 83.5 °F Dew Point: 48 °F Humidity: 29% Wind: Calm Pressure: 30.11 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Rosewood Heights, East Alton, IL

Updated: 6:16 PM CDT

Temperature: 81.6 °F Dew Point: 56 °F Humidity: 41% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Millstadt, Millstadt, IL

Updated: 6:16 PM CDT

Temperature: 84.6 °F Dew Point: 66 °F Humidity: 53% Wind: SSE at 3.5 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

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

Updated: 6:07 PM CDT

Temperature: 82.6 °F Dew Point: 56 °F Humidity: 41% Wind: Calm Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Hunters Creek, Mascoutah, IL

Updated: 6:15 PM CDT

Temperature: 80.7 °F Dew Point: 59 °F Humidity: 48% Wind: SSW at 8.0 mph Pressure: 30.00 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Milton Area - Oscar, Alton, IL

Updated: 6:11 PM CDT

Temperature: 81.0 °F Dew Point: 59 °F Humidity: 47% Wind: NNE at 1.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: MesoWest GARD IL US UPR, Hamel, IL

Updated: 4:20 PM CDT

Temperature: 83 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

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

Updated: 6:15 PM CDT

Temperature: 86.2 °F Dew Point: 56 °F Humidity: 36% Wind: WNW at 2.2 mph Pressure: 28.55 in Hourly Precipitation: 0.00 in Heat Index: 85 °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 
553 PM CDT Wed Jul 30 2014 


Short term: (through tonight) 
issued at 157 PM CDT Wed Jul 30 2014 


Not many changes in store for tonight. Diurnal cu will dissipate 
after sunset, but CI shield shud remain largely in place. Short wave over 
Kansas/OK region shud begin to dig slightly as the upper low over 
Hudson Bay helps to push it swd. This shud keep precip S of the 
County Warning Area overnight. Latest radar trends show precip is further north than 
mdl guidance suggests. However, much of the precip over SW MO is 
largely convective and shud gradually dissipate, at least 
partially, after sunset. All of that said, have added slight pops 
to the srn tier of counties late tonight to account for 
uncertainty in the nrn edge of the precip shield. 


As for temps tonight, with light winds and clouds clearing out, 
have trended twd the cooler guidance tonight except for srn 
portions of the County Warning Area where clouds will linger thru the night. 


Tilly 


Long term: (thursday through next wednesday) 
issued at 251 PM CDT Wed Jul 30 2014 


Persistent longwave trough is still forecast to dominate the 
weather pattern through the rest of the work week and into this 
weekend. Complex of light/moderate rain should stay mainly south 
of the area through Thursday with far southern sections of the 
County warning forecast area possibly being either skirted by the rain shield or isolated 
-shra/-tsra that develops with diurnal instability Thursday 
afternoon. Slight chance of showers or storms will again be 
diurnally driven on Friday/Saturday. Sunday through Tuesday at 
least looks dry with slowly moderating temperatures to near normal 
by Tuesday. Next best chance of any widespread sort of rain looks 
to be next Wednesday/Thursday as flow aloft becomes more zonal and 
a frontal boundary slowly progresses through the region. 




Gosselin 


&& 


Aviation: (for the 00z tafs through 00z Thursday evening) 
issued at 553 PM CDT Wed Jul 30 2014 


Dry and VFR conditions are expected at the taf sites through the 
period with light and variable winds. The large area of showers 
over southwest Missouri is expected to stay well south of all of 
the terminals. 


Specifics for kstl: dry and VFR conditions are expected over the 
next 30 hours with light winds. 


Britt 


&& 


Preliminary point temperatures/pops: 
Saint Louis 64 86 66 85 / 10 10 5 20 
Quincy 58 83 62 80 / 10 10 10 20 
Columbia 59 84 61 83 / 10 10 5 20 
Jefferson City 60 84 61 83 / 10 10 5 20 
Salem 58 83 62 83 / 10 10 5 20 
Farmington 60 78 59 81 / 10 20 10 20 


&& 


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


$$ 


Weather forecast office lsx 












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