Weather in Carol Stream, IL
Carol Stream, Wednesday, 21 October, 10:50
Clear. Feels like 61°. High 70°, low 41°.
Monthly outlook for Carol Stream, IL: average high 63.2°, average low 50.2°. That is 4.2° above the climate normal for October. Precipitation is expected on 7 days (about 3.8 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 October (71.8°), the coolest 21 October (41.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 65.4° | 57° | +4.7° |
| 31 October – 9 November | 59.6° | 52.5° | +3.9° |
| 10 November – 19 November | at normal | 47.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Glendale Heights (3 mi).
0Carol Stream, Thursday, 22 October
Clear. High 72°, low 45°.
0Carol Stream, Friday, 23 October
Clear. High 67°, low 46°.
0
Carol Stream, Saturday, 24 October
Mostly clear. High 66°, low 49°.
0
Carol Stream, Sunday, 25 October
Overcast. High 67°, low 50°.
0Carol Stream, Monday, 26 October
Overcast. High 68°, low 51°.
0Carol Stream, Tuesday, 27 October
Overcast. High 61°, low 52°.
0.03
Carol Stream, Wednesday, 28 October
Light rain. High 67°, low 54°.
0.06Carol Stream, Thursday, 29 October
Light rain. High 60°, low 46°.
0Carol Stream, Friday, 30 October
Overcast. High 56°, low 45°.
0.23Carol Stream, Saturday, 31 October
Light rain. High 60°, low 50°.
1.28Carol Stream, Sunday, 1 November
Rain. High 60°, low 57°.
0.79Carol Stream, Monday, 2 November
Rain. High 59°, low 58°.
0.77Carol Stream, Tuesday, 3 November
Rain. High 61°, low 57°.
0.47Carol Stream, Wednesday, 4 November
Light rain. High 64°, low 54°.
0.18Carol Stream, Thursday, 5 November
Light rain. High 52°, low 48°.
0.07
Carol 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.
0.08Carol Stream, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11Carol Stream, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Carol Stream, Thursday, 19 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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