Weather in Naperville, IL
Naperville, Wednesday, 14 October, 04:22
Overcast. Feels like 64°. High 71°, low 60°.
Monthly outlook for Naperville, IL: average high 58.7°, average low 44.7°. That is 0° below the climate normal for October. Precipitation is expected on 4 days (about 2.6 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 14 October (70.8°), the coolest 26 October (32.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 October – 23 October | 62° | 60.1° | +1.1° |
| 24 October – 2 November | 53.2° | 56.2° | -1.7° |
| 3 November – 12 November | at normal | 51° | — |
October records over 66 years
2.19
Naperville, Thursday, 15 October
Heavy rain. High 66°, low 57°.
0.06Naperville, Friday, 16 October
Light rain. High 61°, low 45°.
0
Naperville, Saturday, 17 October
Clear. High 55°, low 38°.
0Naperville, Sunday, 18 October
Clear. High 60°, low 42°.
0Naperville, Monday, 19 October
Overcast. High 62°, low 41°.
0Naperville, Tuesday, 20 October
Clear. High 65°, low 49°.
0Naperville, Wednesday, 21 October
Clear. High 67°, low 51°.
0Naperville, Thursday, 22 October
Clear. High 59°, low 46°.
0Naperville, Friday, 23 October
Clear. High 54°, low 42°.
0Naperville, Saturday, 24 October
Overcast. High 55°, low 42°.
0.15Naperville, Sunday, 25 October
Light rain. High 50°, low 41°.
0
Naperville, Monday, 26 October
Mostly clear. High 49°, low 32°.
0Naperville, Tuesday, 27 October
Clear. High 54°, low 42°.
0
Naperville, Wednesday, 28 October
Partly cloudy. High 56°, low 42°.
0Naperville, Thursday, 29 October
Partly cloudy. High 55°, low 44°.
0.11Naperville, Friday, 30 October
Climate normal for this date — 60-year average.
0.13
Naperville, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Naperville, Sunday, 1 November
Climate normal for this date — 60-year average.
0.11Naperville, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Naperville, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Naperville, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Naperville, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Naperville, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Naperville, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Naperville, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Naperville, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Naperville, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Naperville, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Naperville, Thursday, 12 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 Naperville, 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 Naperville, 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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