Weather in Carol Stream, IL
Carol Stream, Sunday, 18 October, 00:17
Clear. Feels like 38°. High 63°, low 43°.
Monthly outlook for Carol Stream, IL: average high 62.5°, average low 47.8°. That is 3.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 24 October (68°), the coolest 26 October (38.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 62.3° | 57.8° | +2.5° |
| 28 October – 6 November | 62.7° | 53.9° | +4.9° |
| 7 November – 16 November | at normal | 48.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Glendale Heights (3 mi).
0
Carol Stream, Monday, 19 October
Clear. High 62°, low 43°.
0Carol Stream, Tuesday, 20 October
Clear. High 64°, low 45°.
0Carol Stream, Wednesday, 21 October
Clear. High 65°, low 44°.
0.04
Carol Stream, Thursday, 22 October
Light rain. High 65°, low 48°.
0
Carol Stream, Friday, 23 October
Partly cloudy. High 67°, low 51°.
0
Carol Stream, Saturday, 24 October
Overcast. High 68°, low 54°.
0Carol Stream, Sunday, 25 October
Overcast. High 58°, low 44°.
0Carol Stream, Monday, 26 October
Clear. High 54°, low 39°.
0Carol Stream, Tuesday, 27 October
Overcast. High 56°, low 40°.
0.01Carol Stream, Wednesday, 28 October
Light rain. High 58°, low 49°.
0.11Carol Stream, Thursday, 29 October
Light rain. High 63°, low 57°.
0.01Carol Stream, Friday, 30 October
Light rain. High 64°, low 54°.
0.13Carol Stream, Saturday, 31 October
Light rain. High 65°, low 52°.
0.01Carol Stream, Sunday, 1 November
Light rain. High 63°, low 52°.
0
Carol Stream, Monday, 2 November
Mostly clear. High 64°, low 48°.
0.06Carol Stream, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Carol Stream, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Carol Stream, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Carol Stream, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Carol Stream, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Carol Stream, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Carol Stream, Monday, 9 November
Climate normal for this date — 60-year average.
0.1Carol Stream, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Carol Stream, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Carol Stream, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Carol Stream, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Carol Stream, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Carol Stream, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Carol Stream, Monday, 16 November
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 Carol Stream, 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 Carol Stream, 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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