Weather in Prospect Heights, IL
Prospect Heights, Thursday, 5 November, 05:58
Overcast. Feels like 47°. High 53°, low 45°.
Monthly outlook for Prospect Heights, IL: average high 54.3°, average low 42.7°. That is 3.3° above the climate normal for November. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 17 November (70.3°), the coolest 7 November (33.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 5 November – 14 November | 52.2° | 49.5° | +1.5° |
| 15 November – 24 November | 58° | 45.7° | +6.8° |
| 25 November – 4 December | at normal | 40.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Park Ridge (8 mi).
0Prospect Heights, Friday, 6 November
Overcast. High 49°, low 38°.
0
Prospect Heights, Saturday, 7 November
Mostly clear. High 49°, low 34°.
0Prospect Heights, Sunday, 8 November
Mostly clear. High 58°, low 39°.
0Prospect Heights, Monday, 9 November
Mostly clear. High 59°, low 38°.
0Prospect Heights, Tuesday, 10 November
Overcast. High 57°, low 46°.
0
Prospect Heights, Wednesday, 11 November
Clear. High 49°, low 43°.
0Prospect Heights, Thursday, 12 November
Overcast. High 44°, low 35°.
0.01
Prospect Heights, Friday, 13 November
Light rain. High 50°, low 39°.
0Prospect Heights, Saturday, 14 November
Overcast. High 53°, low 42°.
0Prospect Heights, Sunday, 15 November
Clear. High 60°, low 44°.
0.1Prospect Heights, Monday, 16 November
Light rain. High 67°, low 53°.
0.07Prospect Heights, Tuesday, 17 November
Light rain. High 70°, low 60°.
0Prospect Heights, Wednesday, 18 November
Overcast. High 56°, low 50°.
0Prospect Heights, Thursday, 19 November
Clear. High 47°, low 40°.
0Prospect Heights, Friday, 20 November
Overcast. High 48°, low 37°.
0.1
Prospect Heights, Saturday, 21 November
Climate normal for this date — 60-year average.
0.05Prospect Heights, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Prospect Heights, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Prospect Heights, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09
Prospect Heights, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.12Prospect Heights, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Prospect Heights, Friday, 27 November
Climate normal for this date — 60-year average.
0.12Prospect Heights, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Prospect Heights, Sunday, 29 November
Climate normal for this date — 60-year average.
0.08Prospect Heights, Monday, 30 November
Climate normal for this date — 60-year average.
0.16Prospect Heights, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07Prospect Heights, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.08Prospect Heights, Thursday, 3 December
Climate normal for this date — 60-year average.
0.06Prospect Heights, Friday, 4 December
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 Prospect 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 Prospect 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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