Average temperature in May is 15.8 °C
Average daytime temperature is 22.5 °C
Average night temperature is 10.1 °C
Absolute maximum temperature: 31.4 °C
Absolute minimum temperature: 1.1 °C
Number of sunny days: 20
Number of rainy days: 11
Number of snow days:
Precipitation sum: 46 mm
* Weather data for Naperville United States is based on climate observations for 2023 year
| May (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 7.5 | 12.6 | 16 | 20.3 | 23.5 | 24.4 | 28.2 | 18.2 | 20.6 | 24.3 | 26.5 | 23.8 | 21.4 | 16.9 | 18.8 | 24.2 | 20.2 | 22.8 | 22.7 | 20.6 | 24.4 | 26.8 | 28.5 | 25.9 | 17.2 | 21 | 23.6 | 25.8 | 27.9 | 31.1 | 31.4 |
| Apparent max temperature | 3 | 6.3 | 13.2 | 19.1 | 20.6 | 21.9 | 30.2 | 17.4 | 21 | 24.6 | 26.3 | 25.8 | 21.8 | 15.2 | 17.8 | 23.6 | 17.1 | 22.1 | 21.2 | 19.7 | 25.2 | 26.6 | 28.4 | 27.9 | 14.9 | 18.6 | 21.4 | 24.3 | 27.6 | 31.4 | 33.6 |
| Mean temperature | 4.9 | 8 | 8 | 10.7 | 16.4 | 17.9 | 21.6 | 13.5 | 13.5 | 15.4 | 18.6 | 18.9 | 17.2 | 14.5 | 13 | 15.8 | 12.2 | 13.2 | 18.9 | 14.2 | 16.4 | 19.3 | 21 | 18.9 | 12.5 | 13.4 | 15.8 | 18.8 | 19.6 | 22.6 | 24.7 |
| Apparent mean temperature | -1.9 | -1.5 | -2.9 | -0.1 | 6.2 | 10.3 | 15.8 | 8.1 | 5.6 | 5.4 | 9.2 | 13.4 | 14.3 | 10.4 | 4.9 | 6.8 | 2.8 | 3.2 | 12.5 | 4.7 | 6.2 | 10 | 12.4 | 12.2 | 3.1 | 3.9 | 4.9 | 9.8 | 9.5 | 12.4 | 18.8 |
| Minimum temperature | 4 | 3.7 | 1.1 | 2.8 | 9.5 | 12.6 | 16.4 | 10 | 7.8 | 7.7 | 11.4 | 14.9 | 14.6 | 12.9 | 8.2 | 8.8 | 6.8 | 6.4 | 16.5 | 7.7 | 8.5 | 12.3 | 14.2 | 13.8 | 7.7 | 7.1 | 7.4 | 12.3 | 12.1 | 14.5 | 18 |
| Apparent min temperature | -0.2 | 2.8 | 4.5 | 8.4 | 13.1 | 15.7 | 22 | 12.2 | 12.2 | 14.2 | 17.2 | 18.8 | 17 | 11.9 | 10.3 | 14.4 | 9.2 | 10.7 | 16.9 | 11.7 | 15.2 | 17.9 | 19.6 | 17.3 | 8.5 | 10.4 | 12.9 | 16.4 | 17.6 | 21.3 | 25.4 |
| May | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 14 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.3 | 14.3 | 14.3 | 14.4 | 14.4 | 14.4 | 14.5 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.7 | 14.8 | 14.8 | 14.8 | 14.8 | 14.9 | 14.9 | 14.9 | 14.9 | 15 | 15 |
| Sunshine duration (h) | 0 | 6.1 | 11.8 | 13.1 | 12.9 | 4.7 | 11 | 1.6 | 11.9 | 13.3 | 13.4 | 3.1 | 9.2 | 1 | 11.6 | 10.6 | 13.4 | 13.6 | 10.1 | 13 | 13.7 | 13.7 | 13.6 | 13.7 | 11.6 | 13.8 | 13.5 | 12 | 13.6 | 13.8 | 13.3 |
| Precipitation (mm) | 4.5 | 0 | 0 | 0 | 0 | 1.7 | 0.9 | 16 | 0.2 | 0 | 0 | 12.3 | 5.6 | 0.3 | 0.6 | 0 | 0 | 0 | 2.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.8 |
| Precipitation hours | 14 | 0 | 0 | 0 | 0 | 5 | 4 | 12 | 2 | 0 | 0 | 10 | 4 | 2 | 2 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Wind speed (m/s) | 29 | 29.5 | 20.4 | 14.6 | 21.8 | 24 | 23.4 | 22.5 | 15.4 | 10.1 | 11.6 | 15.7 | 17.7 | 20.9 | 18.4 | 13.7 | 19.5 | 13.6 | 20.4 | 19.7 | 10.6 | 16.6 | 14 | 21.9 | 20.4 | 16.1 | 15.3 | 15.1 | 11.6 | 14.1 | 16.3 |
In May 2023, the highest daytime temperature in Naperville was 31.4°C.
While the minimum temperature at night dropped to 1.1°C.
The average nighttime and daytime temperatures during May in Naperville are 10.1°C and 22.5°C respectively.
The precipitation sum in May is about 46 mm.