Climate normals · 1970–2000
Naperville Climate
Naperville is a city in United States (IL) with a population of about 147,100. Its average annual temperature is 9.7°C (49°F), with roughly 944 mm of rain per year.
9.7°C
Avg Temp
944
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
Naperville Climate
Naperville has an average annual temperature of 9.7°C (49°F) and receives about 944 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.7°C
Avg Temp
944
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -6° / 22° | 41 mm |
| February | -3° / 27° | 37 mm |
| March | 3° / 38° | 66 mm |
| April | 9° / 49° | 97 mm |
| May | 16° / 60° | 96 mm |
| June | 21° / 69° | 105 mm |
| July | 23° / 74° | 98 mm |
| August | 22° / 72° | 104 mm |
| September | 18° / 64° | 94 mm |
| October | 11° / 53° | 68 mm |
| November | 4° / 40° | 78 mm |
| December | -3° / 27° | 60 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Naperville
The most comfortable months to visit Naperville are typically June, August and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -10°C low). June is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Naperville are typically June, August and July, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Naperville, United States has an average annual temperature of 9.7°C and about 944 mm of precipitation per year. The warmest month is July and the coldest is January.
In July, the hottest month, daily highs in Naperville average about 30°C (85°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.