Weather in Prospect Heights, IL
Prospect Heights, Friday, 13 November, 06:57
Overcast. Feels like 25°. High 43°, low 34°.
Monthly outlook for Prospect Heights, IL: average high 48.5°, average low 36.4°. That is 2° above the climate normal for November. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 November (63.8°), the coolest 25 November (24.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 November – 22 November | 52.9° | 46.3° | +3.7° |
| 23 November – 2 December | 41.1° | 41.7° | -0.3° |
| 3 December – 12 December | at normal | 36.9° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Park Ridge (8 mi).
0
Prospect Heights, Saturday, 14 November
Clear. High 47°, low 32°.
0Prospect Heights, Sunday, 15 November
Clear. High 47°, low 30°.
0Prospect Heights, Monday, 16 November
Clear. High 49°, low 31°.
0
Prospect Heights, Tuesday, 17 November
Mostly clear. High 51°, low 34°.
0Prospect Heights, Wednesday, 18 November
Overcast. High 54°, low 35°.
0Prospect Heights, Thursday, 19 November
Overcast. High 63°, low 50°.
0Prospect Heights, Friday, 20 November
Overcast. High 53°, low 44°.
0.13
Prospect Heights, Saturday, 21 November
Light rain. High 59°, low 47°.
0.01Prospect Heights, Sunday, 22 November
Light rain. High 64°, low 55°.
0.67Prospect Heights, Monday, 23 November
Rain. High 60°, low 42°.
0.34
Prospect Heights, Tuesday, 24 November
Snow. High 36°, low 28°.
0Prospect Heights, Wednesday, 25 November
Clear. High 31°, low 25°.
0Prospect Heights, Thursday, 26 November
Clear. High 35°, low 28°.
0
Prospect Heights, Friday, 27 November
Partly cloudy. High 40°, low 31°.
0Prospect Heights, Saturday, 28 November
Overcast. High 45°, low 36°.
0.07
Prospect 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.
0.09Prospect Heights, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06Prospect Heights, Sunday, 6 December
Climate normal for this date — 60-year average.
0.13Prospect Heights, Monday, 7 December
Climate normal for this date — 60-year average.
0.08Prospect Heights, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.09Prospect Heights, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.09Prospect Heights, Thursday, 10 December
Climate normal for this date — 60-year average.
0.11Prospect Heights, Friday, 11 December
Climate normal for this date — 60-year average.
0.1Prospect Heights, Saturday, 12 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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