Weather in Forest Park, IL
Forest Park, Thursday, 15 October, 07:06
Overcast. Feels like 59°. High 68°, low 58°.
Monthly outlook for Forest Park, IL: average high 59.5°, average low 46.7°. That is 0.8° above the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 October (72.6°), the coolest 30 October (35.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 64.5° | 59.3° | +2.9° |
| 25 October – 3 November | 51.2° | 55.4° | -2.4° |
| 4 November – 13 November | at normal | 50.4° | — |
October records over 66 years
0.07
Forest Park, Friday, 16 October
Light rain. High 60°, low 45°.
0
Forest Park, Saturday, 17 October
Clear. High 55°, low 39°.
0Forest Park, Sunday, 18 October
Clear. High 60°, low 42°.
0Forest Park, Monday, 19 October
Clear. High 63°, low 42°.
0
Forest Park, Tuesday, 20 October
Partly cloudy. High 64°, low 45°.
0Forest Park, Wednesday, 21 October
Clear. High 69°, low 55°.
0Forest Park, Thursday, 22 October
Overcast. High 69°, low 54°.
0Forest Park, Friday, 23 October
Overcast. High 73°, low 56°.
0.11Forest Park, Saturday, 24 October
Light rain. High 65°, low 58°.
0.01Forest Park, Sunday, 25 October
Light rain. High 58°, low 50°.
0Forest Park, Monday, 26 October
Clear. High 51°, low 42°.
0Forest Park, Tuesday, 27 October
Overcast. High 48°, low 42°.
0Forest Park, Wednesday, 28 October
Overcast. High 56°, low 38°.
0.11Forest Park, Thursday, 29 October
Light rain. High 51°, low 45°.
0Forest Park, Friday, 30 October
Clear. High 44°, low 35°.
0.13
Forest Park, Saturday, 31 October
Climate normal for this date — 60-year average.
0.18Forest 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.
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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