Weather in Naperville, IL
Naperville, Saturday, 17 October, 00:28
Clear. Feels like 35°. High 55°, low 37°.
Monthly outlook for Naperville, IL: average high 61°, average low 46.8°. That is 1.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 October (71.1°), the coolest 17 October (37.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 62.9° | 58.8° | +2.3° |
| 27 October – 5 November | 57.8° | 54.9° | +1.6° |
| 6 November – 15 November | at normal | 49.4° | — |
October records over 66 years
0
Naperville, Sunday, 18 October
Clear. High 61°, low 42°.
0Naperville, Monday, 19 October
Clear. High 63°, low 41°.
0
Naperville, Tuesday, 20 October
Mostly clear. High 65°, low 45°.
0Naperville, Wednesday, 21 October
Clear. High 67°, low 46°.
0.04
Naperville, Thursday, 22 October
Light rain. High 69°, low 50°.
0
Naperville, Friday, 23 October
Overcast. High 71°, low 59°.
0Naperville, Saturday, 24 October
Overcast. High 70°, low 55°.
0Naperville, Sunday, 25 October
Overcast. High 57°, low 47°.
0.02Naperville, Monday, 26 October
Light rain. High 51°, low 48°.
0Naperville, Tuesday, 27 October
Overcast. High 66°, low 52°.
0Naperville, Wednesday, 28 October
Clear. High 54°, low 43°.
0.16Naperville, Thursday, 29 October
Rain. High 54°, low 46°.
0.34Naperville, Friday, 30 October
Rain. High 61°, low 50°.
0Naperville, Saturday, 31 October
Mostly clear. High 54°, low 45°.
0Naperville, Sunday, 1 November
Clear. High 58°, low 42°.
0.11
Naperville, Monday, 2 November
Climate normal for this date — 60-year average.
0.07
Naperville, 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.
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.
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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