Average annual temperature is 18.7 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: -4.2 °C
Number of sunny days: 186 days
Number of rainy days: 179 days
Look at detailed online map of Romulus
* Weather data for Romulus United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 23.1 | 27.2 | 27.6 | 29.8 | 33.8 | 36.3 | 37.1 | 38.0 | 33.8 | 30.6 | 26.7 | 23.3 |
| Average daytime temperature (°C) | 16.3 | 19.6 | 20.8 | 23.1 | 27.8 | 32.0 | 33.5 | 34.2 | 31.1 | 25.2 | 18.9 | 15.5 |
| Average temperature (°C) | 11.0 | 13.2 | 14.6 | 17.1 | 21.4 | 25.4 | 27.1 | 27.8 | 24.6 | 19.1 | 12.8 | 9.6 |
| Average night temperature (°C) | 6.9 | 8.9 | 9.5 | 12.0 | 16.2 | 20.0 | 22.5 | 23.0 | 19.4 | 14.0 | 8.4 | 5.1 |
| Absolute minimum temperature (°C) | -1.9 | -1.9 | -4.2 | 7.1 | 8.1 | 18.1 | 19.2 | 18.7 | 14.8 | 6.4 | -1.1 | -1.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.2 | 7.4 | 8.8 | 9.1 | 10.7 | 11.6 | 11.0 | 10.9 | 10.9 | 8.8 | 6.9 | 7.6 |
| Precipitation (mm) | 157 | 160 | 110 | 138 | 85 | 74 | 113 | 116 | 33 | 16 | 56 | 72 |
| Sunny days | 14 | 11 | 19 | 11 | 11 | 10 | 11 | 15 | 18 | 25 | 19 | 22 |
| Rainy days | 17 | 17 | 12 | 19 | 20 | 20 | 20 | 16 | 12 | 6 | 11 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Romulus during the most sunny months:
The largest precipitation sum in Romulus is at