Weather in Blue Island, IL
Blue Island, Saturday, 14 November, 12:42
Mostly clear. Feels like 40°. High 45°, low 30°.
Monthly outlook for Blue Island, IL: average high 51.2°, average low 38.5°. That is 3.4° above the climate normal for November. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 November (64.9°), the coolest 16 November (30.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 November – 23 November | 52.2° | 46.5° | +3.2° |
| 24 November – 3 December | 49.6° | 41.7° | +4.4° |
| 4 December – 13 December | at normal | 37.1° | — |
November records over 66 years
0
Blue Island, Sunday, 15 November
Clear. High 48°, low 33°.
0Blue Island, Monday, 16 November
Clear. High 49°, low 30°.
0Blue Island, Tuesday, 17 November
Clear. High 52°, low 33°.
0
Blue Island, Wednesday, 18 November
Overcast. High 56°, low 38°.
0.01
Blue Island, Thursday, 19 November
Light rain. High 57°, low 46°.
0
Blue Island, Friday, 20 November
Partly cloudy. High 59°, low 46°.
0.02Blue Island, Saturday, 21 November
Light rain. High 65°, low 55°.
0.04Blue Island, Sunday, 22 November
Light rain. High 51°, low 37°.
0Blue Island, Monday, 23 November
Clear. High 40°, low 31°.
0Blue Island, Tuesday, 24 November
Overcast. High 43°, low 32°.
0.06Blue Island, Wednesday, 25 November
Light rain. High 44°, low 39°.
0.22Blue Island, Thursday, 26 November
Rain. High 51°, low 42°.
0.01Blue Island, Friday, 27 November
Light rain. High 63°, low 52°.
0.71Blue Island, Saturday, 28 November
Rain. High 60°, low 40°.
0Blue Island, Sunday, 29 November
Overcast. High 37°, low 31°.
0.09Blue Island, Monday, 30 November
Climate normal for this date — 60-year average.
0.15
Blue Island, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07Blue Island, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Blue Island, Thursday, 3 December
Climate normal for this date — 60-year average.
0.07Blue Island, Friday, 4 December
Climate normal for this date — 60-year average.
0.09Blue Island, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06Blue Island, Sunday, 6 December
Climate normal for this date — 60-year average.
0.13Blue Island, Monday, 7 December
Climate normal for this date — 60-year average.
0.08Blue Island, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.09Blue Island, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.09Blue Island, Thursday, 10 December
Climate normal for this date — 60-year average.
0.12Blue Island, Friday, 11 December
Climate normal for this date — 60-year average.
0.1Blue Island, Saturday, 12 December
Climate normal for this date — 60-year average.
0.06Blue Island, Sunday, 13 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 Blue Island, 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 Blue Island, 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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