Weather in Prospect Heights, IL
Prospect Heights, Sunday, 15 November, 09:51
Mostly clear. Feels like 43°. High 49°, low 30°.
Monthly outlook for Prospect Heights, IL: average high 51.5°, average low 39.9°. That is 4° above the climate normal for November. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 November (61.5°), the coolest 15 November (29.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 53.2° | 45.7° | +4.2° |
| 25 November – 4 December | 48.6° | 40.8° | +4.4° |
| 5 December – 14 December | at normal | 36.4° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Park Ridge (8 mi).
0
Prospect Heights, Monday, 16 November
Clear. High 53°, low 31°.
0Prospect Heights, Tuesday, 17 November
Clear. High 53°, low 36°.
0
Prospect Heights, Wednesday, 18 November
Overcast. High 55°, low 40°.
0Prospect Heights, Thursday, 19 November
Clear. High 61°, low 47°.
0Prospect Heights, Friday, 20 November
Overcast. High 55°, low 38°.
0.02
Prospect Heights, Saturday, 21 November
Light rain. High 62°, low 52°.
0Prospect Heights, Sunday, 22 November
Clear. High 55°, low 40°.
0Prospect Heights, Monday, 23 November
Overcast. High 45°, low 37°.
0Prospect Heights, Tuesday, 24 November
Overcast. High 46°, low 39°.
0
Prospect Heights, Wednesday, 25 November
Partly cloudy. High 51°, low 37°.
0Prospect Heights, Thursday, 26 November
Overcast. High 56°, low 44°.
0.31Prospect Heights, Friday, 27 November
Rain. High 49°, low 46°.
0Prospect Heights, Saturday, 28 November
Partly cloudy. High 49°, low 40°.
0Prospect Heights, Sunday, 29 November
Overcast. High 45°, low 43°.
0Prospect Heights, Monday, 30 November
Overcast. High 42°, low 39°.
0.16
Prospect 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.
0.06Prospect Heights, Sunday, 13 December
Climate normal for this date — 60-year average.
0.11Prospect Heights, Monday, 14 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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