Weather in Westchester, IL
Westchester, Sunday, 9 August, 04:46
Clear. Feels like 65°. High 84°, low 64°.
Monthly outlook for Westchester, IL: average high 85.3°, average low 69.4°. That is 2.9° above the climate normal for August. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 23 August (97.2°), the coolest 9 August (63.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.4° | 80.2° | +1.2° |
| 19 August – 28 August | 90.2° | 80.3° | +5.5° |
| 29 August – 7 September | at normal | 78.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — La Grange Park (2 mi).
0.96
Westchester, Monday, 10 August
Rain. High 89°, low 71°.
0.05Westchester, Tuesday, 11 August
Light rain. High 81°, low 69°.
0.04Westchester, Wednesday, 12 August
Light rain. High 87°, low 71°.
0
Westchester, Thursday, 13 August
Overcast. High 77°, low 68°.
0Westchester, Friday, 14 August
Overcast. High 77°, low 64°.
0Westchester, Saturday, 15 August
Overcast. High 81°, low 66°.
0.01Westchester, Sunday, 16 August
Light rain. High 80°, low 68°.
0.01Westchester, Monday, 17 August
Light rain. High 85°, low 68°.
0Westchester, Tuesday, 18 August
Overcast. High 83°, low 68°.
0.12Westchester, Wednesday, 19 August
Light rain. High 88°, low 68°.
0Westchester, Thursday, 20 August
Overcast. High 86°, low 76°.
0
Westchester, Friday, 21 August
Clear. High 88°, low 75°.
0Westchester, Saturday, 22 August
Clear. High 97°, low 71°.
0.01Westchester, Sunday, 23 August
Light rain. High 97°, low 73°.
0.07Westchester, Monday, 24 August
Light rain. High 86°, low 70°.
0.08
Westchester, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.16
Westchester, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.14Westchester, Thursday, 27 August
Climate normal for this date — 60-year average.
0.14Westchester, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Westchester, Saturday, 29 August
Climate normal for this date — 60-year average.
0.09Westchester, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Westchester, Monday, 31 August
Climate normal for this date — 60-year average.
0.14Westchester, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06Westchester, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08Westchester, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Westchester, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Westchester, Saturday, 5 September
Climate normal for this date — 60-year average.
0.1Westchester, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09Westchester, Monday, 7 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Westchester, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Westchester, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
69°Weather in Annapolis, MD75°Weather in Atlanta, GA71°Weather in Augusta, ME66°Weather in Austin, TX78°Weather in Baton Rouge, LA
76°Weather in Bismarck, ND63°Weather in Boise, ID69°Weather in Boston, MA71°Weather in Carson City, NV70°Weather in Charleston, WV73°Weather in Charlotte Amalie, VI81°Weather in Cheyenne, WY68°Weather in Columbia, SC73°Weather in Columbus, OH68°Weather in Concord, NH69°Weather in Denver, CO73°Weather in Des Moines, IA74°Weather in Dover, DE75°Weather in Frankfort, KY70°Weather in Harrisburg, PA71°Weather in Hartford, CT71°Weather in Helena, MT61°Weather in Honolulu, HI77°Weather in Indianapolis, IN71°Weather in Jackson, MS75°Weather in Jefferson City, MO75°Weather in Juneau, AK47°Weather in Lansing, MI58°Weather in Lincoln, NE76°Weather in Little Rock, AR73°Weather in Madison, WI63°Weather in Montgomery, AL75°Weather in Montpelier, VT63°Weather in Nashville, TN69°Weather in Oklahoma City, OK80°Weather in Olympia, WA55°Weather in Phoenix, AZ92°Weather in Pierre, SD70°Weather in Providence, RI73°Weather in Raleigh, NC73°Weather in Richmond, VA74°Weather in Sacramento, CA68°Weather in Salem, OR59°Weather in Salt Lake City, UT80°Weather in San Juan, PR80°Weather in Santa Fe, NM71°Weather in Springfield, IL72°Weather in St. Paul, MN66°Weather in Tallahassee, FL74°Weather in Topeka, KS76°Weather in Trenton, NJ71°Weather in Washington, DC74°70°Weather in Pleasant Grove, IL71°Weather in Pleasant Valley, IL59°Weather in Plumfield, IL68°Weather in Polk, IL63°Weather in Poplar City, IL69°Weather in Poplar Ridge, IL68°Weather in Port Jackson, IL71°Weather in Portage, IL62°Weather in Porterfield, IL67°Weather in Pottsville, IL68°Weather in Powellton, IL69°Weather in Powerton, IL69°Weather in Prairie Hall, IL69°Weather in Prince Crossing, IL63°Weather in Proctor, IL67°Weather in Prospect, IL67°Weather in Prouty, IL72°Weather in Pruett, IL72°Weather in Puder, IL62°