+41.7859° · -88.1473° · ELEV 0m
Naperville
United States · Illinois
Monthly weather averages for Naperville, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
July → JanuaryClimate Overview
Naperville has a continental climate. The warmest month is July (28°C average high) and the coolest is January (-1°C).
№ 02
1158 mm / yearRainfall by Month
Naperville sees 1158 mm of rain a year. The wettest month is May (136 mm); the driest is November (57 mm).
№ 03
June–SeptemberBest Time to Visit
June–September
15°C – 28°C · 10.9h sun
The best time to visit Naperville is June–September, when temperatures average 15°C–28°C with 10.9 sunshine hours per day.
Some visitors prefer April–May for cooler, drier conditions.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | -0.6°C | -8.8°C | 58 mm | 5.0 h | 07:17 | 16:46 |
|---|---|---|---|---|---|---|
| February | 1.0°C | -8.6°C | 61 mm | 6.7 h | 06:48 | 17:25 |
| March | 8.1°C | -1.7°C | 82 mm | 7.6 h | 07:04 | 18:58 |
| April | 14.2°C | 3.4°C | 105 mm | 8.6 h | 06:12 | 19:32 |
| May | 20.8°C | 10.2°C | 136 mm | 9.8 h | 05:32 | 20:05 |
| June | 26.5°C | 15.9°C | 131 mm | 11.3 h | 05:17 | 20:29 |
| July | 27.8°C | 18.3°C | 130 mm | 11.6 h | 05:30 | 20:25 |
| August | 27.3°C | 17.9°C | 110 mm | 11.1 h | 06:00 | 19:53 |
| September | 24.2°C | 15.0°C | 100 mm | 9.5 h | 06:32 | 19:03 |
| October | 16.4°C | 8.0°C | 124 mm | 6.9 h | 07:04 | 18:11 |
| November | 8.4°C | 0.2°C | 57 mm | 6.1 h | 06:41 | 16:32 |
| December | 3.8°C | -3.5°C | 64 mm | 5.1 h | 07:12 | 16:22 |