Collinsville, Illinois Weather Conditions

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Current Conditions

  • 81°
  • Clear
  • Wind: NNW 5 mph
  • Humidity: 42%
  • Visibility: 10.0 miles
  • Dew Point: 56°
  • Pressure: 29.99 in. -
  • Heat Index: 81

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Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
77°
68°
63°
55°
57°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 81 °
  • Low: 52 °
  • Partly Cloudy
  • Sunday
  • Clear
  • High: 79 °
  • Low: 63 °
  • Clear
  • Monday
  • Chance of a Thunderstorm
  • High: 81 °
  • Low: 59 °
  • Chance of a Thunderstorm
  • Tuesday
  • Partly Cloudy
  • High: 68 °
  • Low: 41 °
  • Partly Cloudy
  • Wednesday
  • Clear
  • High: 59 °
  • Low: 46 °
  • Clear

Forecast for Collinsville, Illinois

Updated: 4:00 PM CDT on October 25, 2014

  • Saturday

    Partly cloudy. Fog early. High of 79F. Winds from the WNW at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 52F. Winds less than 5 mph.

  • Sunday

    Clear. High of 79F. Winds from the SE at 5 to 10 mph.

  • Sunday Night

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

  • Monday

    Partly cloudy. High of 81F. Winds from the SSW at 10 to 15 mph. Chance of rain 20%.

  • Monday Night

    Overcast with a chance of a thunderstorm and a chance of rain, then a chance of a thunderstorm and rain after midnight. Fog overnight. Low of 59F. Winds from the SW at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Tuesday

    Overcast in the morning, then clear. High of 68F. Winds from the WNW at 10 to 15 mph.

  • Tuesday Night

    Mostly cloudy. Low of 41F. Winds from the WNW at 5 to 10 mph.

  • Wednesday

    Partly cloudy in the morning, then clear. High of 59F. Winds from the WNW at 5 to 10 mph.

  • Wednesday Night

    Clear. Low of 46F. Winds from the South at 5 to 10 mph.

  • Thursday

    Partly cloudy. High of 64F. Winds from the SW at 5 to 10 mph shifting to the WNW in the afternoon.

  • Thursday Night

    Clear. Low of 41F. Winds from the NW at 5 to 10 mph.

  • Friday

    Clear. High of 48F. Winds from the NNW at 10 to 15 mph.

  • Friday Night

    Clear. Low of 37F. Winds from the North at 5 to 15 mph.

  • Saturday

    Clear. High of 54F. Winds from the NNW at 10 to 15 mph.

  • Saturday Night

    Clear. Low of 39F. Winds from the North at 5 to 10 mph.

  • Sunday

    Clear. High of 57F. Winds from the SSE at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 43F. Winds from the South at 5 to 10 mph.

  • Monday

    Clear. High of 64F. Winds from the South at 5 to 15 mph.

  • Monday Night

    Clear. Low of 50F. Winds from the South at 5 to 10 mph.

  • Tuesday

    Mostly cloudy with a chance of rain. High of 64F. Winds from the SSW at 5 to 10 mph. Chance of rain 40% with rainfall amounts near 0.2 in. possible.

  • Tuesday Night

    Mostly cloudy with a chance of rain. Low of 50F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Clear. High of 64F. Winds less than 5 mph.

  • Wednesday Night

    Clear. Low of 50F. Winds from the SSW at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Collinsville West, Collinsville, IL

Updated: 3:36 PM CDT

Temperature: 78.8 °F Dew Point: 58 °F Humidity: 49% Wind: WNW at 4.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Rolling Meadows Dr, Maryville, IL

Updated: 3:36 PM CDT

Temperature: 83.5 °F Dew Point: 54 °F Humidity: 37% Wind: WSW at 1.1 mph Pressure: 29.35 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Barbarotto Compound, Maryville, IL

Updated: 3:36 PM CDT

Temperature: 81.2 °F Dew Point: 58 °F Humidity: 46% Wind: WSW at 2.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Liberty Place, Troy, IL

Updated: 3:23 PM CDT

Temperature: 79.0 °F Dew Point: 61 °F Humidity: 55% Wind: WNW at 4.0 mph Pressure: 29.36 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

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

Updated: 2:55 PM CDT

Temperature: 81 °F Dew Point: 59 °F Humidity: 47% Wind: WSW at 5 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Nolan Creek, OFallon, IL

Updated: 3:26 PM CDT

Temperature: 80.4 °F Dew Point: 58 °F Humidity: 47% Wind: North at 3.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

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

Updated: 3:36 PM CDT

Temperature: 82.8 °F Dew Point: 60 °F Humidity: 46% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: New Goose, Fairview Heights, IL

Updated: 3:36 PM CDT

Temperature: 82.6 °F Dew Point: 59 °F Humidity: 45% Wind: North at 1.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Old Skewl, Fairview Heights, IL

Updated: 3:36 PM CDT

Temperature: 73.5 °F Dew Point: 53 °F Humidity: 48% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: StormGrl2001, Fairview Heights, IL

Updated: 3:22 PM CDT

Temperature: 79.5 °F Dew Point: 60 °F Humidity: 52% Wind: WSW at 3.7 mph Pressure: 29.91 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: Chateau Estates, Fairview Heights, IL

Updated: 3:36 PM CDT

Temperature: 83.4 °F Dew Point: 59 °F Humidity: 43% Wind: NW at 2.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Prairie Crossing, OFallon, IL

Updated: 3:09 PM CDT

Temperature: 82.8 °F Dew Point: 62 °F Humidity: 50% Wind: Calm Pressure: 29.76 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: Mallard Pointe, Troy, IL

Updated: 3:36 PM CDT

Temperature: 86.9 °F Dew Point: 62 °F Humidity: 43% Wind: West at 3.8 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: EAST GRANITE, Granite City, IL

Updated: 3:22 PM CDT

Temperature: 83.1 °F Dew Point: 60 °F Humidity: 46% Wind: WSW at 1.7 mph Pressure: 29.95 in Hourly Precipitation: - Heat Index: 83 °F Graphs

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

Updated: 2:15 PM CDT

Temperature: 80 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

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

Updated: 2:15 PM CDT

Temperature: 80 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Kelly Greens Weather Station, Edwardsville, IL

Updated: 3:36 PM CDT

Temperature: 80.2 °F Dew Point: 62 °F Humidity: 54% Wind: WSW at 1.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Dunlap Lake, Edwardsville, IL

Updated: 3:22 PM CDT

Temperature: 82.6 °F Dew Point: 63 °F Humidity: 52% Wind: SSW at 1.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Grand Ave, Edwardsville, IL

Updated: 3:35 PM CDT

Temperature: 79.7 °F Dew Point: 61 °F Humidity: 53% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Nickel Plate Trail, Edwardsville, IL

Updated: 3:35 PM CDT

Temperature: 78.4 °F Dew Point: 60 °F Humidity: 54% Wind: WNW at 1.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

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

Updated: 3:35 PM CDT

Temperature: 79.3 °F Dew Point: 57 °F Humidity: 47% Wind: Calm Pressure: 30.04 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: North Horner Park, Lebanon, IL

Updated: 3:36 PM CDT

Temperature: 78.0 °F Dew Point: 67 °F Humidity: 68% Wind: WNW at 5.0 mph Pressure: 29.51 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Camelot Estates, Belleville, IL

Updated: 3:32 PM CDT

Temperature: 80.2 °F Dew Point: 59 °F Humidity: 49% Wind: WNW at 2.7 mph Pressure: 29.85 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: West End, Belleville, IL

Updated: 3:35 PM CDT

Temperature: 81.0 °F Dew Point: 35 °F Humidity: 37% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: APRSWXNET Shiloh IL US, Belleville, IL

Updated: 3:03 PM CDT

Temperature: 79 °F Dew Point: 58 °F Humidity: 48% Wind: SW at 1 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Branch Street, St. Louis, MO

Updated: 3:31 PM CDT

Temperature: 80.6 °F Dew Point: - Humidity: 46% Wind: North at - Pressure: 29.55 in Hourly Precipitation: - Heat Index: 81 °F Graphs

Location: BLAIR STREET, St. Louis, MO

Updated: 3:30 PM CDT

Temperature: 80.8 °F Dew Point: - Humidity: 51% Wind: North at - Pressure: 29.47 in Hourly Precipitation: - Heat Index: 82 °F Graphs

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

Updated: 3:36 PM CDT

Temperature: 80.2 °F Dew Point: 60 °F Humidity: 51% Wind: SSE at 1.3 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Patriots, Scott AIr Force Base, IL

Updated: 3:34 PM CDT

Temperature: 81.5 °F Dew Point: 54 °F Humidity: 38% Wind: NW at 4.5 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Rosewood Heights, East Alton, IL

Updated: 3:36 PM CDT

Temperature: 80.1 °F Dew Point: 56 °F Humidity: 43% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: APRSWXNET East Alton IL US, Wood River, IL

Updated: 2:44 PM CDT

Temperature: 80 °F Dew Point: 55 °F Humidity: 42% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Millstadt, Millstadt, IL

Updated: 3:35 PM CDT

Temperature: 86.9 °F Dew Point: 68 °F Humidity: 53% Wind: WNW at 2.3 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Hunters Creek, Mascoutah, IL

Updated: 3:35 PM CDT

Temperature: 80.7 °F Dew Point: 56 °F Humidity: 43% Wind: NW at 4.0 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Milton Area - Oscar, Alton, IL

Updated: 3:35 PM CDT

Temperature: 79.5 °F Dew Point: 57 °F Humidity: 47% Wind: NW at 3.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

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

Updated: 3:36 PM CDT

Temperature: 82.9 °F Dew Point: 59 °F Humidity: 44% Wind: West at 4.2 mph Pressure: 28.52 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Forest Park, St. Louis, MO

Updated: 3:31 PM CDT

Temperature: 79.5 °F Dew Point: - Humidity: 45% Wind: North at - Pressure: 29.27 in Hourly Precipitation: 0.00 in Heat Index: 80 °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 
1231 PM CDT Sat Oct 25 2014 


Short term: (through late this afternoon) 
issued at 308 am CDT Sat Oct 25 2014 


Primary focus this morning will be on fog. Believe fog will continue to 
slowly advect southeastward behind a weak cold front. By mid-morning... 
expect diurnal effects to alleviate concerns for dense fog with remnant 
stratus quickly scattering out and then dissipating by midday. A mostly 
clear sky is forecast for the rest of today with high temperatures 
about 5 degrees warmer than yesterday. 




Gosselin 


Long term: (tonight through friday) 
issued at 308 am CDT Sat Oct 25 2014 




(tonight - Monday night) 


Surface ridge will come across the region tonight with light winds. 
Appears to be more of a River Valley fog setup as strong radiational 
cooling should be the rule. More widespread fog is not expected at this 
time as lower dewpoints seep southwestward from the Great Lakes. 
For mins tonight...leaned a bit toward cooler guidance due to nearly 
ideal radiative conditions...especially across the Eastern Ozarks 
where nwp guidance notoriously has a warm bias. 


High temperatures appear challenging for the day on Sunday. Timing of 
a warm front moving through the region is a bit uncertain with the 
NAM model nearly 6 hr slower than the GFS. Leaned toward the faster 
GFS (and thus warmer) solution due to forecast leeside cyclogenesis... 
building mid/upper level heights...and lack of precipitation/convection 
to retard the northward progression of the warm front. Still looks like 
a decent temp gradient across the area however from southwest to northeast. 
Expect highs reaching the mid 80s for portions of central Missouri to 
low 70s across south-central Illinois. 


One last Summer-like day is in store on Monday ahead of an approaching 
cold front from the northwest. Went above warmest guidance yielding highs 
in the 80s nearly areawide as will range from +15-+19c at 850 hpa. 


Cold frontal timing looks ~3 hrs quicker on tonight's models runs than 
last night. Consequently...timing of highest pops has shifted southeastward 
a bit faster as well through Monday night. 




(Tuesday - friday) 


Cooler...more seasonable weather looks in store for the rest of the work 
week with highs in the 60s through Thursday. Models forecast an impulse 
to come through the mid/upper Mississippi Valley on Thursday with slight 
chances of showers. Models diverge greatly Friday and beyond but does 
appear cooler weather will be ushered in for Halloween and into the 
beginning of next weekend with the potential for a widespread frost/freeze 
looming beyond the valid forecast period. 




Gosselin 


&& 


Aviation: (for the 18z tafs through 18z Sunday afternoon) 
issued at 1220 PM CDT Sat Oct 25 2014 


VFR conditions expected through the overnight hours at all taf 
sites. A weak cold front across northern Missouri will sag 
southward as high pressure builds in from Nebraska. Light and 
variable surface winds will become light northerly this afternoon. Some 
stratus based at around 2000 feet may creep into the area from 
southwest to northeast on Sunday morning as a warm from 
approaches. For now, will keep cloud cover at scattered coverage, 
and brief evening shift to watch for possible inclusion of an MVFR 
deck if later model output continues to indicate this. Light 
northerly winds will veer overnight into Sunday as the surface 
high moves quickly off to the east and surface low pressure 
develops over the plains states. 


Specifics for kstl: 
VFR conditions expected through at least 12z Sunday with light 
north winds. Areas of MVFR ceilings to 2000 feet may move across 
the taf site after around 18z Sunday, and later updates may require 
inclusion of a prevailing MVFR ceiling. Winds will veer overnight 
and become southeast during the day Sunday. 


Browning 


&& 


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


$$ 


Weather forecast office lsx 












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