Weather in Naperville, IL
Naperville, Tuesday, 20 October, 11:41
Clear. Feels like 63°. High 67°, low 42°.
Monthly outlook for Naperville, IL: average high 58.1°, average low 41.5°. That is 0.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 October (71.3°), the coolest 28 October (30.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 61.5° | 57.8° | +2° |
| 30 October – 8 November | 52.4° | 53.7° | -0.7° |
| 9 November – 18 November | at normal | 48.1° | — |
October records over 66 years
0Naperville, Wednesday, 21 October
Clear. High 71°, low 42°.
0Naperville, Thursday, 22 October
Clear. High 68°, low 47°.
0Naperville, Friday, 23 October
Clear. High 64°, low 49°.
0
Naperville, Saturday, 24 October
Overcast. High 66°, low 47°.
0Naperville, Sunday, 25 October
Overcast. High 69°, low 53°.
0.11
Naperville, Monday, 26 October
Light rain. High 67°, low 42°.
0.07Naperville, Tuesday, 27 October
Light rain. High 46°, low 36°.
0Naperville, Wednesday, 28 October
Clear. High 46°, low 30°.
0Naperville, Thursday, 29 October
Clear. High 49°, low 37°.
0Naperville, Friday, 30 October
Clear. High 43°, low 32°.
0
Naperville, Saturday, 31 October
Partly cloudy. High 48°, low 31°.
0.01Naperville, Sunday, 1 November
Light rain. High 50°, low 40°.
0Naperville, Monday, 2 November
Clear. High 59°, low 41°.
0Naperville, Tuesday, 3 November
Overcast. High 59°, low 44°.
0.55Naperville, Wednesday, 4 November
Rain. High 56°, low 50°.
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.
0.05
Naperville, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Naperville, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12
Naperville, 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.
0.05Naperville, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Naperville, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Naperville, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Naperville, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Naperville, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.13Naperville, Wednesday, 18 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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