Weather in Prospect Heights, IL
Prospect Heights, Thursday, 12 November, 08:25
Overcast. Feels like 32°. High 45°, low 38°.
Monthly outlook for Prospect Heights, IL: average high 50.2°, average low 38.9°. That is 2.7° above the climate normal for November. Precipitation is expected on 5 days (about 3.4 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 20 November (61.4°), the coolest 26 November (28.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 November – 21 November | 50.6° | 46.5° | +2.3° |
| 22 November – 1 December | 49.5° | 42.2° | +4.1° |
| 2 December – 11 December | at normal | 37.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Park Ridge (8 mi).
0
Prospect Heights, Friday, 13 November
Light rain. High 42°, low 36°.
0
Prospect Heights, Saturday, 14 November
Clear. High 44°, low 30°.
0
Prospect Heights, Sunday, 15 November
Mostly clear. High 45°, low 30°.
0Prospect Heights, Monday, 16 November
Clear. High 48°, low 30°.
0Prospect Heights, Tuesday, 17 November
Mostly clear. High 50°, low 33°.
0Prospect Heights, Wednesday, 18 November
Overcast. High 57°, low 40°.
0.04Prospect Heights, Thursday, 19 November
Light rain. High 61°, low 49°.
0.04Prospect Heights, Friday, 20 November
Light rain. High 61°, low 49°.
0.86Prospect Heights, Saturday, 21 November
Rain. High 53°, low 46°.
0.98Prospect Heights, Sunday, 22 November
Rain. High 58°, low 54°.
0.58Prospect Heights, Monday, 23 November
Rain. High 54°, low 51°.
0.41Prospect Heights, Tuesday, 24 November
Rain. High 57°, low 39°.
0Prospect Heights, Wednesday, 25 November
Overcast. High 38°, low 30°.
0.01
Prospect Heights, Thursday, 26 November
Light snow. High 36°, low 28°.
0.48Prospect Heights, Friday, 27 November
Rain. High 55°, low 38°.
0.12
Prospect Heights, Saturday, 28 November
Climate normal for this date — 60-year average.
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.
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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