Weather in Chicago Heights, IL
Chicago Heights, Sunday, 25 October, 04:18
Overcast. Feels like 50°. High 72°, low 50°.
Monthly outlook for Chicago Heights, IL: average high 64.3°, average low 51.1°. That is 5.6° above the climate normal for October. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 29 October (72.5°), the coolest 8 November (40.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 69.2° | 55.5° | +7.6° |
| 4 November – 13 November | 56.1° | 50.5° | +3.1° |
| 14 November – 23 November | at normal | 46.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Blue Island (10 mi).
0Chicago Heights, Monday, 26 October
Overcast. High 67°, low 50°.
0Chicago Heights, Tuesday, 27 October
Overcast. High 69°, low 51°.
0
Chicago Heights, Wednesday, 28 October
Clear. High 71°, low 54°.
0.01
Chicago Heights, Thursday, 29 October
Light rain. High 73°, low 58°.
0Chicago Heights, Friday, 30 October
Light rain. High 71°, low 55°.
0Chicago Heights, Saturday, 31 October
Overcast. High 72°, low 60°.
0.32Chicago Heights, Sunday, 1 November
Rain. High 65°, low 59°.
0.54Chicago Heights, Monday, 2 November
Rain. High 68°, low 58°.
0.9Chicago Heights, Tuesday, 3 November
Heavy rain. High 66°, low 49°.
0Chicago Heights, Wednesday, 4 November
Overcast. High 52°, low 46°.
0Chicago Heights, Thursday, 5 November
Overcast. High 56°, low 47°.
0Chicago Heights, Friday, 6 November
Overcast. High 59°, low 46°.
0Chicago Heights, Saturday, 7 November
Overcast. High 56°, low 44°.
0
Chicago Heights, Sunday, 8 November
Mostly clear. High 54°, low 41°.
0.19Chicago Heights, Monday, 9 November
Light rain. High 59°, low 47°.
0.13
Chicago Heights, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08
Chicago Heights, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Chicago Heights, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Chicago Heights, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Chicago Heights, Saturday, 14 November
Climate normal for this date — 60-year average.
0.1Chicago Heights, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Chicago Heights, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Chicago Heights, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.15Chicago Heights, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Chicago Heights, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Chicago Heights, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Chicago Heights, Saturday, 21 November
Climate normal for this date — 60-year average.
0.05Chicago Heights, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Chicago Heights, Monday, 23 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 Chicago Heights, 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 Chicago Heights, 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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