Collinsville, Illinois Weather Conditions

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Current Conditions

  • 56°
  • Light Rain
  • Wind: SE 13 mph
  • Humidity: 90%
  • Visibility: 6.0 miles
  • Dew Point: 53°
  • Pressure: 29.62 in. -

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Next 12 Hours

12  pm
3  pm
6  pm
9  pm
12  am
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
Rain
Rain
Rain
Rain
Rain
Rain
54°
57°
55°
48°
52°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Chance of a Thunderstorm
  • High: 57 °
  • Low: 37 °
  • Chance of T-Storms
  • Monday
  • Chance of Rain
  • High: 43 °
  • Low: 27 °
  • Chance of Rain
  • Tuesday
  • Partly Cloudy
  • High: 39 °
  • Low: 25 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 48 °
  • Low: 30 °
  • Partly Cloudy
  • Thursday
  • Mostly Cloudy
  • High: 46 °
  • Low: 21 °
  • Mostly Cloudy

Forecast for Collinsville, Illinois

Updated: 3:00 AM CST on November 23, 2014

  • Sunday

    Overcast with a chance of a thunderstorm and rain showers. High of 57F. Winds from the SE at 10 to 15 mph. Chance of rain 100% with rainfall amounts near 0.6 in. possible.

  • Sunday Night

    Overcast with rain. Low of 37F. Winds from the South at 10 to 15 mph shifting to the West after midnight. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Monday

    Mostly cloudy with a chance of rain. High of 43F. Breezy. Winds from the West at 15 to 20 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy. Low of 27F. Winds from the West at 10 to 15 mph.

  • Tuesday

    Partly cloudy in the morning, then clear. High of 39F with a windchill as low as 19F. Winds from the West at 5 to 10 mph.

  • Tuesday Night

    Clear in the evening, then partly cloudy. Low of 25F. Winds less than 5 mph.

  • Wednesday

    Partly cloudy. High of 48F. Winds from the SSE at 5 to 10 mph.

  • Wednesday Night

    Mostly cloudy. Fog overnight. Low of 30F with a windchill as low as 23F. Winds from the West at 5 to 15 mph.

  • Thursday

    Clear in the morning, then overcast. High of 46F. Winds from the NNW at 5 to 10 mph.

  • Thursday Night

    Mostly cloudy. Fog overnight. Low of 21F with a windchill as low as 10F. Winds from the ENE at 5 to 10 mph shifting to the SE after midnight.

  • Friday

    Mostly cloudy. Fog early. High of 54F. Breezy. Winds from the South at 15 to 20 mph.

  • Friday Night

    Partly cloudy. Low of 25F. Winds from the SW at 10 to 15 mph.

  • Saturday

    Partly cloudy. High of 52F. Winds from the SW at 5 to 15 mph shifting to the WNW in the afternoon.

  • Saturday Night

    Mostly cloudy. Fog overnight. Low of 34F. Winds from the NNE at 5 to 15 mph.

  • Sunday

    Overcast with a chance of rain. Fog early. High of 57F. Winds from the ESE at 5 to 15 mph. Chance of rain 50%.

  • Sunday Night

    Overcast with a chance of a thunderstorm. Fog overnight. Low of 39F. Winds from the SSW at 5 to 15 mph. Chance of rain 30%.

  • Monday

    Partly cloudy. High of 45F. Winds less than 5 mph.

  • Monday Night

    Partly cloudy. Low of 34F. Winds less than 5 mph.

  • Tuesday

    Clear. High of 43F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 36F. Winds less than 5 mph.

  • Wednesday

    Partly cloudy. Fog early. High of 43F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Fog overnight. Low of 36F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Collinsville West, Collinsville, IL

Updated: 10:48 AM CST

Temperature: 53.9 °F Dew Point: 52 °F Humidity: 94% Wind: ESE at 4.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Graphs

Location: Tim and Carolyns yard, COLLINSVILLE, IL

Updated: 10:48 AM CST

Temperature: 56.5 °F Dew Point: 53 °F Humidity: 88% Wind: SSE at 1.8 mph Pressure: 29.12 in Hourly Precipitation: 0.00 in Graphs

Location: Rolling Meadows Dr, Maryville, IL

Updated: 10:48 AM CST

Temperature: 54.9 °F Dew Point: 53 °F Humidity: 92% Wind: Calm Pressure: 29.00 in Hourly Precipitation: 0.00 in Graphs

Location: Barbarotto Compound, Maryville, IL

Updated: 10:48 AM CST

Temperature: 54.2 °F Dew Point: 52 °F Humidity: 93% Wind: SSE at 16.0 mph Pressure: 29.53 in Hourly Precipitation: 0.00 in Graphs

Location: Liberty Place, Troy, IL

Updated: 10:42 AM CST

Temperature: 54.5 °F Dew Point: 52 °F Humidity: 91% Wind: SE at 9.0 mph Pressure: 28.99 in Hourly Precipitation: 0.02 in Graphs

Location: Nolan Creek, OFallon, IL

Updated: 10:36 AM CST

Temperature: 54.8 °F Dew Point: 52 °F Humidity: 91% Wind: SE at 9.0 mph Pressure: 29.63 in Hourly Precipitation: 0.02 in Graphs

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

Updated: 10:48 AM CST

Temperature: 55.0 °F Dew Point: 54 °F Humidity: 95% Wind: SE at 4.5 mph Pressure: 29.35 in Hourly Precipitation: 0.01 in Graphs

Location: New Goose, Fairview Heights, IL

Updated: 10:48 AM CST

Temperature: 54.5 °F Dew Point: 52 °F Humidity: 93% Wind: South at 3.0 mph Pressure: 29.60 in Hourly Precipitation: 0.01 in Graphs

Location: Old Skewl, Fairview Heights, IL

Updated: 10:48 AM CST

Temperature: 53.3 °F Dew Point: 53 °F Humidity: 98% Wind: South at 5.4 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: StormGrl2001, Fairview Heights, IL

Updated: 10:36 AM CST

Temperature: 54.0 °F Dew Point: 50 °F Humidity: 88% Wind: Calm Pressure: 29.54 in Hourly Precipitation: - Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 10:48 AM CST

Temperature: 54.5 °F Dew Point: 52 °F Humidity: 92% Wind: SE at 5.0 mph Pressure: 29.57 in Hourly Precipitation: 0.00 in Graphs

Location: Prairie Crossing, OFallon, IL

Updated: 10:35 AM CST

Temperature: 54.5 °F Dew Point: 52 °F Humidity: 91% Wind: Calm Pressure: 29.40 in Hourly Precipitation: - Graphs

Location: EAST GRANITE, Granite City, IL

Updated: 10:35 AM CST

Temperature: 54.7 °F Dew Point: 52 °F Humidity: 91% Wind: ESE at 5.8 mph Pressure: 29.58 in Hourly Precipitation: - Graphs

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

Updated: 9:55 AM CST

Temperature: 54 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Kelly Greens Weather Station, Edwardsville, IL

Updated: 10:48 AM CST

Temperature: 54.4 °F Dew Point: 53 °F Humidity: 94% Wind: SSE at 8.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Graphs

Location: Dunlap Lake, Edwardsville, IL

Updated: 10:43 AM CST

Temperature: 54.7 °F Dew Point: 53 °F Humidity: 93% Wind: WSW at 1.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Graphs

Location: Grand Ave, Edwardsville, IL

Updated: 10:47 AM CST

Temperature: 54.9 °F Dew Point: 51 °F Humidity: 88% Wind: Calm Pressure: 29.66 in Hourly Precipitation: 0.01 in Graphs

Location: Nickel Plate Trail, Edwardsville, IL

Updated: 10:45 AM CST

Temperature: 53.6 °F Dew Point: 52 °F Humidity: 94% Wind: SSE at 2.0 mph Pressure: 29.60 in Hourly Precipitation: 0.02 in Graphs

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

Updated: 10:48 AM CST

Temperature: 54.3 °F Dew Point: 53 °F Humidity: 96% Wind: East at 4.5 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Graphs

Location: North Horner Park, Lebanon, IL

Updated: 10:47 AM CST

Temperature: 55.0 °F Dew Point: 43 °F Humidity: 63% Wind: East at 3.0 mph Pressure: 29.01 in Hourly Precipitation: 0.01 in Graphs

Location: Lake Christine, Belleville, IL

Updated: 10:37 AM CST

Temperature: 53.6 °F Dew Point: 52 °F Humidity: 94% Wind: NE at 4.7 mph Pressure: 29.42 in Hourly Precipitation: - Graphs

Location: West End, Belleville, IL

Updated: 10:48 AM CST

Temperature: 54.7 °F Dew Point: 48 °F Humidity: 97% Wind: North at - Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: APRSWXNET Shiloh IL US, Belleville, IL

Updated: 10:03 AM CST

Temperature: 54 °F Dew Point: 51 °F Humidity: 91% Wind: East at 6 mph Pressure: 29.63 in Hourly Precipitation: 0.00 in Graphs

Location: Branch Street, St. Louis, MO

Updated: 10:40 AM CST

Temperature: 55.2 °F Dew Point: - Humidity: 85% Wind: North at - Pressure: 29.20 in Hourly Precipitation: - Graphs

Location: BLAIR STREET, St. Louis, MO

Updated: 10:40 AM CST

Temperature: 55.8 °F Dew Point: - Humidity: 90% Wind: North at - Pressure: 29.14 in Hourly Precipitation: - Graphs

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

Updated: 10:48 AM CST

Temperature: 54.9 °F Dew Point: 53 °F Humidity: 94% Wind: South at 8.1 mph Pressure: 29.71 in Hourly Precipitation: 0.00 in Graphs

Location: Belleville, IL, Belleville, IL

Updated: 10:48 AM CST

Temperature: 55.4 °F Dew Point: 47 °F Humidity: 73% Wind: Calm Pressure: 29.28 in Hourly Precipitation: 0.00 in Graphs

Location: Patriots, Scott AIr Force Base, IL

Updated: 10:45 AM CST

Temperature: 55.4 °F Dew Point: 48 °F Humidity: 75% Wind: NE at 4.5 mph Pressure: 29.39 in Hourly Precipitation: 0.01 in Graphs

Location: Belleville - Southeast, Belleville, IL

Updated: 10:45 AM CST

Temperature: 55.2 °F Dew Point: 51 °F Humidity: 87% Wind: ENE at 3.1 mph Pressure: 29.39 in Hourly Precipitation: 0.01 in Graphs

Location: Rosewood Heights, East Alton, IL

Updated: 10:48 AM CST

Temperature: 53.9 °F Dew Point: 51 °F Humidity: 89% Wind: SSE at 4.0 mph Pressure: 29.57 in Hourly Precipitation: 0.01 in Graphs

Location: Millstadt, Millstadt, IL

Updated: 10:48 AM CST

Temperature: 53.6 °F Dew Point: 50 °F Humidity: 86% Wind: NNE at 6.9 mph Pressure: 29.51 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 10:41 AM CST

Temperature: 54.1 °F Dew Point: 52 °F Humidity: 91% Wind: ESE at 2.0 mph Pressure: 29.60 in Hourly Precipitation: 0.02 in Graphs

Location: Bethalto, IL

Updated: 10:48 AM CST

Temperature: 54.5 °F Dew Point: 14 °F Humidity: 20% Wind: ENE at 5.4 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Hunters Creek, Mascoutah, IL

Updated: 10:48 AM CST

Temperature: 54.8 °F Dew Point: 52 °F Humidity: 91% Wind: ESE at 7.0 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Graphs

Location: Covered Bridge Lane, Belleville, IL

Updated: 10:48 AM CST

Temperature: 54.9 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 29.44 in Hourly Precipitation: 0.00 in Graphs

Location: Milton Area - Oscar, Alton, IL

Updated: 10:47 AM CST

Temperature: 54.7 °F Dew Point: 53 °F Humidity: 92% Wind: ESE at 3.0 mph Pressure: 29.56 in Hourly Precipitation: 0.01 in 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 
628 am CST sun Nov 23 2014 


Short term: (through late this afternoon) 
issued at 331 am CST sun Nov 23 2014 


Surface low to begin lifting northeastward towards forecast area 
today. Will see showers on the increase this morning and spread 
north across the region. Some instability today so there is a chance 
of thunderstorms mainly along and south of I-70. As for 
temperatures, will depend on cloud cover and rainfall. But feel that 
temps will rise into the mid 50s to low 60s by this afternoon. 


Byrd 


Long term: (tonight through saturday) 
issued at 331 am CST sun Nov 23 2014 


(tonight-wednesday) 


While specific precip trends are certainly tricky tonight and into 
Monday, latest synoptic and hi-res guidance suggests the general 
scenario will be that this afternoon's band of rain and embedded 
thunderstorms will rotate east out of the area this evening, as 
additional precip begins to form to our west as secondary shortwave 
drops south in the wake of today's system. This secondary area of 
precip should then wind down to spotty areas of light rain/light 
snow during the day on Monday. 


Yesterday's guidance as well as 00z model output is now suggesting 
more precip lingering in the cold air late tonight and early Monday 
than was indicated by earlier runs. I have not made any major 
changes to the timing of the changeover from rain to snow over the 
northwest half of the County Warning Area in the 06-12z time frame; this may be a 
bit too fast, but didn't want to discount the intensity of the 
cold air advection. In the far northwest counties, it appears that this strong cold air advection will 
cause freezing levels to drop enough to support the rain changing 
over to all snow for a few hours late tonight and into early 
Monday morning, and based on this have added some minor accumulations 
of under an inch in our extreme northwest counties. 


Min/Max temps for tonight/Monday will be based on non-diurnal, 3 
hourly temp trends during this time frame. 


No major changes in going forecast trends heading into midweek, with 
dry and chlly weather on Tuesday followed by a brief warmup and low 
pops for the fast-moving, moisture-starved system on Wednesday. 


(Thursday-saturday) 


Medium range guidance has come into better agreement with a less 
amplified solution for Thanksgiving day, suggesting a ribbon of 
light precip over northern sections of the County Warning Area as shortwave 
interacts with baroclinicity that is draped across the region. 
Pattern suggests that there should be a strong temperature 
gradient from north to south across the region, with highs in the 
30s over the cold air in the north while approaching 50 in the 
warmer air over southern sections of the County Warning Area. 


This agreement jumps the tracks heading into the latter half of the 
week, with Gem and European model (ecmwf) forecasting broad trofing over the central 
Continental U.S. While the GFS maintains a more quasi-zonal look. Of course, 
given the intensity of the baroclinic zone this somewhat subtle 
difference will make a huge impact on sensible weather trends, and 
especially on temperatures. This discrepency can be seen in the 
surface prog forecasts for Friday morning; European model (ecmwf) and Gem have broad 
and cold Canadian high over the plains and into the upper 
Mississippi Valley with north/northeast winds over our fa, while GFS 
as surface low over the northern plains and southerly winds over our 
area. MOS guidance based on these solutions offer a more 
quanitative and Stark measure of this discrepency...a whopping 
20-25 degree difference on friday's highs between the colder 
European model (ecmwf) and warmer GFS. For now have maintained earlier (colder) 
trends, based on consensus of Gem and ecmef. 


Truett 
&& 


Aviation: (for the 12z tafs through 12z Monday morning) 
issued at 628 am CST sun Nov 23 2014 


Next round of showers continuing to develop and slide northward 
through forecast area and persist through most of forecast period. 
Cigs to lower to MVFR by mid morning, then down to IFR. In the 
meantime, winds to persist from the southeast to south today. As 
surface low lifts through region, cold front associated with it to 
slide through area tonight. Front to move through kcou by 03z 
Monday, KUIN by 04z Monday and Metro area tafs by 07z Monday. 
Winds to veer to the west behind from and become gusty at times. 
Colder air will filter on back side of system with rain becoming 
mixed with snow after midnight tonight. 


Specifics for kstl: 
next round of showers continuing to develop and slide northward 
moving into the Metro area by 14z and persist through most of 
forecast period. Cigs to lower to MVFR by 14z, then down to IFR by 20z. 
In the meantime, winds to persist from the south today. As 
surface low lifts through region, cold front associated with it to 
slide Metro area by 07z Monday. Winds to veer to the west behind 
from and become gusty at times. Colder air will filter on back 
side of system with rain becoming mixed with snow after 13z 
Monday. 


Byrd 
&& 


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


$$ 
Weather forecast office lsx 










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