Weather in River Forest, IL
River Forest, Saturday, 8 August, 14:41
Clear. Feels like 87°. High 85°, low 69°.
Monthly outlook for River Forest, IL: average high 80.6°, average low 66.8°. That is 0.3° above the climate normal for August. Precipitation is expected on 6 days (about 2.3 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 12 August (87.2°), the coolest 23 August (58.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 82° | 80.3° | +1° |
| 18 August – 27 August | 78.3° | 80.1° | -1° |
| 28 August – 6 September | at normal | 78.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Oak Park (2 mi).
1.42
River Forest, Sunday, 9 August
Heavy rain. High 84°, low 66°.
0.07River Forest, Monday, 10 August
Light rain. High 85°, low 73°.
0.19River Forest, Tuesday, 11 August
Rain. High 87°, low 73°.
0.02River Forest, Wednesday, 12 August
Light rain. High 87°, low 69°.
0.06River Forest, Thursday, 13 August
Light rain. High 73°, low 66°.
0River Forest, Friday, 14 August
Clear. High 76°, low 63°.
0
River Forest, Saturday, 15 August
Overcast. High 81°, low 62°.
0
River Forest, Sunday, 16 August
Partly cloudy. High 82°, low 62°.
0.06River Forest, Monday, 17 August
Light rain. High 82°, low 69°.
0.01River Forest, Tuesday, 18 August
Light rain. High 84°, low 71°.
0.41River Forest, Wednesday, 19 August
Rain. High 87°, low 69°.
0.02River Forest, Thursday, 20 August
Light rain. High 77°, low 69°.
0River Forest, Friday, 21 August
Partly cloudy. High 79°, low 66°.
0.01River Forest, Saturday, 22 August
Light rain. High 76°, low 62°.
0River Forest, Sunday, 23 August
Clear. High 67°, low 59°.
0.13River Forest, Monday, 24 August
Climate normal for this date — 60-year average.
0.07River Forest, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15
River Forest, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11River Forest, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13River Forest, Friday, 28 August
Climate normal for this date — 60-year average.
0.11River Forest, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13River Forest, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07River Forest, Monday, 31 August
Climate normal for this date — 60-year average.
0.12River Forest, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05River Forest, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09River Forest, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09River Forest, Friday, 4 September
Climate normal for this date — 60-year average.
0.09River Forest, Saturday, 5 September
Climate normal for this date — 60-year average.
0.1River Forest, 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 River Forest, 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 River Forest, 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
80°Weather in Annapolis, MD88°Weather in Atlanta, GA90°Weather in Augusta, ME81°Weather in Austin, TX98°Weather in Baton Rouge, LA95°Weather in Bismarck, ND94°Weather in Boise, ID95°Weather in Boston, MA90°Weather in Carson City, NV98°Weather in Charleston, WV91°Weather in Charlotte Amalie, VI84°Weather in Cheyenne, WY93°Weather in Columbia, SC90°Weather in Columbus, OH88°Weather in Concord, NH87°Weather in Denver, CO99°Weather in Des Moines, IA83°Weather in Dover, DE85°Weather in Frankfort, KY91°Weather in Harrisburg, PA84°Weather in Hartford, CT85°Weather in Helena, MT94°Weather in Honolulu, HI
84°Weather in Indianapolis, IN87°Weather in Jackson, MS89°Weather in Jefferson City, MO91°Weather in Juneau, AK49°Weather in Lansing, MI83°Weather in Lincoln, NE79°Weather in Little Rock, AR87°Weather in Madison, WI80°Weather in Montgomery, AL89°Weather in Montpelier, VT82°Weather in Nashville, TN89°Weather in Oklahoma City, OK106°Weather in Olympia, WA80°Weather in Phoenix, AZ109°Weather in Pierre, SD97°Weather in Providence, RI89°Weather in Raleigh, NC91°Weather in Richmond, VA93°Weather in Sacramento, CA95°Weather in Salem, OR87°Weather in Salt Lake City, UT100°Weather in San Juan, PR89°Weather in Santa Fe, NM93°Weather in Springfield, IL90°Weather in St. Paul, MN84°Weather in Tallahassee, FL92°Weather in Topeka, KS90°Weather in Trenton, NJ83°Weather in Washington, DC91°82°Weather in Idlewild, IL81°Weather in Idlewood, IL87°Weather in Illiana, IL87°Weather in Illiana Heights, IL83°Weather in Ingleside Shore, IL81°Weather in Irene, IL83°Weather in Iron, IL89°Weather in Isabel, IL88°Weather in Jacob, IL89°Weather in Janesville, IL89°Weather in Johannisburg, IL90°Weather in Johnstown, IL90°Weather in Jones Ridge, IL90°Weather in Jonesville, IL82°Weather in Kasbeer, IL84°Weather in Kellerville, IL87°Weather in Kellyville, IL88°Weather in Kemp, IL88°Weather in Kennedy, IL83°