Weather in River Forest, IL
River Forest, Friday, 16 October, 04:35
Mostly clear. Feels like 52°. High 58°, low 45°.
Monthly outlook for River Forest, IL: average high 63.9°, average low 49.6°. That is 3.4° above the climate normal for October. Precipitation is expected on 1 day (about 1.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 24 October (75.3°), the coolest 17 October (39°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 65.1° | 58.9° | +3.5° |
| 26 October – 4 November | 62° | 55° | +3.9° |
| 5 November – 14 November | at normal | 49.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Oak Park (2 mi).
0
River Forest, Saturday, 17 October
Clear. High 55°, low 39°.
0River Forest, Sunday, 18 October
Clear. High 61°, low 42°.
0River Forest, Monday, 19 October
Clear. High 62°, low 42°.
0River Forest, Tuesday, 20 October
Clear. High 63°, low 43°.
0River Forest, Wednesday, 21 October
Clear. High 65°, low 44°.
0.02
River Forest, Thursday, 22 October
Light rain. High 62°, low 56°.
0River Forest, Friday, 23 October
Clear. High 74°, low 56°.
0
River Forest, Saturday, 24 October
Mostly clear. High 75°, low 58°.
0
River Forest, Sunday, 25 October
Partly cloudy. High 75°, low 58°.
0
River Forest, Monday, 26 October
Overcast. High 69°, low 57°.
0River Forest, Tuesday, 27 October
Overcast. High 64°, low 53°.
0River Forest, Wednesday, 28 October
Mostly clear. High 67°, low 51°.
0River Forest, Thursday, 29 October
Partly cloudy. High 62°, low 55°.
0.96River Forest, Friday, 30 October
Heavy rain. High 63°, low 51°.
0.01River Forest, Saturday, 31 October
Light rain. High 47°, low 43°.
0.16
River Forest, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12River Forest, Monday, 2 November
Climate normal for this date — 60-year average.
0.06River Forest, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09River Forest, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12River Forest, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07River Forest, Friday, 6 November
Climate normal for this date — 60-year average.
0.05River Forest, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06River Forest, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11River Forest, Monday, 9 November
Climate normal for this date — 60-year average.
0.11River Forest, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08River Forest, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06River Forest, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05River Forest, Friday, 13 November
Climate normal for this date — 60-year average.
0.07River Forest, Saturday, 14 November
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
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