Weather in Deer Park, IL
Deer Park, Saturday, 8 August, 21:52
Clear. Feels like 69°. High 82°, low 68°.
Monthly outlook for Deer Park, IL: average high 77.7°, average low 62.1°. That is 0.1° below the climate normal for August. Precipitation is expected on 3 days (about 2.6 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 11 August (85.8°), the coolest 20 August (53.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 80° | 78.1° | +1° |
| 18 August – 27 August | 73.9° | 77.8° | -2.2° |
| 28 August – 6 September | at normal | 76.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (14 mi).
1.05
Deer Park, Sunday, 9 August
Heavy rain. High 84°, low 63°.
0.91Deer Park, Monday, 10 August
Heavy rain. High 85°, low 70°.
0.62Deer Park, Tuesday, 11 August
Heavy rain. High 86°, low 68°.
0Deer Park, Wednesday, 12 August
Light rain. High 80°, low 65°.
0
Deer Park, Thursday, 13 August
Overcast. High 71°, low 62°.
0
Deer Park, Friday, 14 August
Clear. High 78°, low 58°.
0Deer Park, Saturday, 15 August
Overcast. High 76°, low 61°.
0Deer Park, Sunday, 16 August
Overcast. High 77°, low 60°.
0.02Deer Park, Monday, 17 August
Light rain. High 80°, low 64°.
0Deer Park, Tuesday, 18 August
Overcast. High 82°, low 66°.
0.02Deer Park, Wednesday, 19 August
Light rain. High 74°, low 60°.
0Deer Park, Thursday, 20 August
Overcast. High 67°, low 54°.
0Deer Park, Friday, 21 August
Clear. High 74°, low 54°.
0.01Deer Park, Saturday, 22 August
Light rain. High 67°, low 58°.
0
Deer Park, Sunday, 23 August
Mostly clear. High 80°, low 64°.
0.11
Deer Park, Monday, 24 August
Climate normal for this date — 60-year average.
0.07Deer Park, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.14
Deer Park, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.1Deer Park, Thursday, 27 August
Climate normal for this date — 60-year average.
0.12Deer Park, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Deer Park, Saturday, 29 August
Climate normal for this date — 60-year average.
0.09Deer Park, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Deer Park, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Deer Park, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Deer Park, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Deer Park, Thursday, 3 September
Climate normal for this date — 60-year average.
0.08Deer Park, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Deer Park, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Deer Park, Sunday, 6 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 Deer Park, 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 Deer Park, 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
70°Weather in Annapolis, MD77°Weather in Atlanta, GA76°Weather in Augusta, ME71°Weather in Austin, TX85°Weather in Baton Rouge, LA
80°Weather in Bismarck, ND73°Weather in Boise, ID82°Weather in Boston, MA75°Weather in Carson City, NV88°Weather in Charleston, WV75°Weather in Charlotte Amalie, VI81°Weather in Cheyenne, WY80°Weather in Columbia, SC78°Weather in Columbus, OH75°Weather in Concord, NH72°Weather in Denver, CO85°Weather in Des Moines, IA74°Weather in Dover, DE77°Weather in Frankfort, KY78°Weather in Harrisburg, PA74°Weather in Hartford, CT72°Weather in Helena, MT72°Weather in Honolulu, HI80°Weather in Indianapolis, IN75°Weather in Jackson, MS80°Weather in Jefferson City, MO79°Weather in Juneau, AK50°Weather in Lansing, MI66°Weather in Lincoln, NE79°Weather in Little Rock, AR77°Weather in Madison, WI67°Weather in Montgomery, AL81°Weather in Montpelier, VT64°Weather in Nashville, TN73°Weather in Oklahoma City, OK89°Weather in Olympia, WA68°Weather in Phoenix, AZ98°Weather in Pierre, SD80°Weather in Providence, RI73°Weather in Raleigh, NC76°Weather in Richmond, VA80°Weather in Sacramento, CA79°Weather in Salem, OR75°Weather in Salt Lake City, UT86°Weather in San Juan, PR83°Weather in Santa Fe, NM76°Weather in Springfield, IL77°Weather in St. Paul, MN72°Weather in Tallahassee, FL77°Weather in Topeka, KS80°Weather in Trenton, NJ76°Weather in Washington, DC77°75°Weather in Campbell Hill, IL77°Weather in Carrier Mills, IL75°Weather in Bush, IL76°Weather in Cambria, IL75°Weather in Vienna, IL76°Weather in Buncombe, IL75°Weather in Alto Pass, IL75°Weather in Hanover, IL67°Weather in Elizabeth, IL66°Weather in Menominee, IL67°Weather in Nora, IL64°Weather in Scales Mound, IL65°Weather in Stockton, IL64°Weather in Warren, IL65°Weather in Lena, IL64°Weather in Dakota, IL65°Weather in Davis, IL65°Weather in German Valley, IL64°Weather in Ridott, IL65°