Weather in Berwyn, IL
Berwyn, Thursday, 15 October, 03:10
Overcast. Feels like 59°. High 68°, low 58°.
Monthly outlook for Berwyn, IL: average high 64.6°, average low 50.9°. That is 3.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 October (79.1°), the coolest 17 October (38.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 66.8° | 59.5° | +4° |
| 25 October – 3 November | 60.9° | 55.7° | +2.9° |
| 4 November – 13 November | at normal | 50.6° | — |
October records over 66 years
0.08
Berwyn, Friday, 16 October
Light rain. High 60°, low 45°.
0
Berwyn, Saturday, 17 October
Clear. High 54°, low 38°.
0Berwyn, Sunday, 18 October
Clear. High 60°, low 42°.
0
Berwyn, Monday, 19 October
Partly cloudy. High 62°, low 42°.
0Berwyn, Tuesday, 20 October
Clear. High 68°, low 43°.
0Berwyn, Wednesday, 21 October
Overcast. High 73°, low 57°.
0Berwyn, Thursday, 22 October
Partly cloudy. High 75°, low 59°.
0.01Berwyn, Friday, 23 October
Light rain. High 79°, low 64°.
0.41Berwyn, Saturday, 24 October
Rain. High 69°, low 64°.
0.06Berwyn, Sunday, 25 October
Light rain. High 64°, low 55°.
1.21Berwyn, Monday, 26 October
Heavy rain. High 57°, low 46°.
0
Berwyn, Tuesday, 27 October
Mostly clear. High 61°, low 49°.
0Berwyn, Wednesday, 28 October
Overcast. High 63°, low 51°.
0Berwyn, Thursday, 29 October
Clear. High 61°, low 52°.
0Berwyn, Friday, 30 October
Clear. High 60°, low 47°.
0.13
Berwyn, Saturday, 31 October
Climate normal for this date — 60-year average.
0.18Berwyn, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Berwyn, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Berwyn, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Berwyn, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Berwyn, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Berwyn, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Berwyn, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Berwyn, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Berwyn, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Berwyn, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Berwyn, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Berwyn, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Berwyn, Friday, 13 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 Berwyn, 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 Berwyn, 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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