Weather in Blue Island, IL
Blue Island, Sunday, 15 November, 11:42
Mostly clear. Feels like 47°. High 50°, low 30°.
Monthly outlook for Blue Island, IL: average high 51.8°, average low 40.1°. That is 4° above the climate normal for November. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 November (62°), the coolest 15 November (30°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 53.6° | 46.1° | +4.2° |
| 25 November – 4 December | 48.8° | 41.2° | +4.2° |
| 5 December – 14 December | at normal | 36.9° | — |
November records over 66 years
0Blue Island, Monday, 16 November
Mostly clear. High 52°, low 32°.
0
Blue Island, Tuesday, 17 November
Clear. High 54°, low 35°.
0
Blue Island, Wednesday, 18 November
Overcast. High 56°, low 40°.
0Blue Island, Thursday, 19 November
Clear. High 61°, low 46°.
0Blue Island, Friday, 20 November
Overcast. High 57°, low 39°.
0.01
Blue Island, Saturday, 21 November
Light rain. High 62°, low 51°.
0Blue Island, Sunday, 22 November
Clear. High 55°, low 42°.
0Blue Island, Monday, 23 November
Overcast. High 45°, low 40°.
0Blue Island, Tuesday, 24 November
Overcast. High 45°, low 38°.
0
Blue Island, Wednesday, 25 November
Partly cloudy. High 51°, low 36°.
0Blue Island, Thursday, 26 November
Overcast. High 57°, low 44°.
0.23Blue Island, Friday, 27 November
Light rain. High 50°, low 46°.
0Blue Island, Saturday, 28 November
Mostly clear. High 48°, low 41°.
0Blue Island, Sunday, 29 November
Overcast. High 45°, low 43°.
0.01
Blue Island, Monday, 30 November
Light snow. High 42°, low 37°.
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.
0.11Blue Island, 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 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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