Weather in Berwyn, IL
Berwyn, Tuesday, 13 October, 01:28
Clear. Feels like 78°. High 81°, low 66°.
Monthly outlook for Berwyn, IL: average high 63.2°, average low 52.2°. That is 2.3° above the climate normal for October. Precipitation is expected on 7 days (about 3.5 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 13 October (81.2°), the coolest 17 October (38.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 October – 22 October | 65.8° | 60.3° | +3° |
| 23 October – 1 November | 58.9° | 56.6° | +1.2° |
| 2 November – 11 November | at normal | 51.9° | — |
October records over 66 years
0.78
Berwyn, Wednesday, 14 October
Heavy rain. High 74°, low 58°.
1.88Berwyn, Thursday, 15 October
Heavy rain. High 59°, low 56°.
0.01Berwyn, Friday, 16 October
Light rain. High 57°, low 47°.
0
Berwyn, Saturday, 17 October
Clear. High 57°, low 38°.
0
Berwyn, Sunday, 18 October
Partly cloudy. High 62°, low 46°.
0.04Berwyn, Monday, 19 October
Light rain. High 61°, low 51°.
0.39Berwyn, Tuesday, 20 October
Rain. High 59°, low 55°.
0.01Berwyn, Wednesday, 21 October
Light rain. High 70°, low 58°.
0
Berwyn, Thursday, 22 October
Overcast. High 76°, low 62°.
0.2Berwyn, Friday, 23 October
Light rain. High 71°, low 57°.
0Berwyn, Saturday, 24 October
Partly cloudy. High 60°, low 53°.
0Berwyn, Sunday, 25 October
Partly cloudy. High 55°, low 48°.
0Berwyn, Monday, 26 October
Light rain. High 58°, low 48°.
0.07Berwyn, Tuesday, 27 October
Light rain. High 59°, low 48°.
0Berwyn, Wednesday, 28 October
Overcast. High 50°, low 45°.
0.06Berwyn, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Berwyn, Friday, 30 October
Climate normal for this date — 60-year average.
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.
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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