Weather in Forest Park, IL
Forest Park, Friday, 16 October, 10:39
Overcast. Feels like 51°. High 58°, low 44°.
Monthly outlook for Forest Park, IL: average high 62°, average low 49.3°. That is 2.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 26 October (69.5°), the coolest 17 October (36.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 61.7° | 58.9° | +1.6° |
| 26 October – 4 November | 62.5° | 55° | +4.2° |
| 5 November – 14 November | at normal | 49.9° | — |
October records over 66 years
0
Forest Park, Saturday, 17 October
Clear. High 55°, low 37°.
0Forest Park, Sunday, 18 October
Clear. High 60°, low 42°.
0Forest Park, Monday, 19 October
Clear. High 63°, low 42°.
0Forest Park, Tuesday, 20 October
Overcast. High 63°, low 43°.
0
Forest Park, Wednesday, 21 October
Mostly clear. High 66°, low 47°.
0.01
Forest Park, Thursday, 22 October
Light rain. High 62°, low 52°.
0
Forest Park, Friday, 23 October
Partly cloudy. High 60°, low 54°.
0Forest Park, Saturday, 24 October
Overcast. High 63°, low 50°.
0Forest Park, Sunday, 25 October
Overcast. High 67°, low 52°.
0Forest Park, Monday, 26 October
Overcast. High 70°, low 54°.
0Forest Park, Tuesday, 27 October
Overcast. High 61°, low 53°.
0.23Forest Park, Wednesday, 28 October
Rain. High 57°, low 50°.
0.11Forest Park, Thursday, 29 October
Light rain. High 65°, low 57°.
0Forest Park, Friday, 30 October
Overcast. High 66°, low 58°.
0.12Forest Park, Saturday, 31 October
Light rain. High 56°, low 54°.
0.18
Forest Park, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Forest Park, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Forest Park, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Forest Park, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Forest Park, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Forest Park, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Forest Park, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Forest Park, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Forest Park, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Forest Park, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Forest Park, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Forest Park, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Forest Park, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Forest Park, 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 Forest 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 Forest 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
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