Average annual temperature is 15.0 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: -10.2 °C
Number of sunny days: 198 days
Number of rainy days: 166 days
Number of snow days: 1 day
Look at detailed online map of Merrimac
* Weather data for Merrimac 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) | 20.4 | 21.5 | 23.3 | 28.2 | 31.0 | 34.7 | 37.3 | 38.0 | 32.8 | 29.8 | 27.3 | 18.2 |
| Average daytime temperature (°C) | 9.0 | 11.9 | 13.5 | 21.0 | 26.1 | 30.5 | 32.4 | 30.3 | 27.5 | 21.0 | 14.9 | 10.9 |
| Average temperature (°C) | 4.1 | 5.8 | 7.4 | 14.0 | 19.8 | 24.0 | 26.3 | 25.2 | 21.7 | 15.6 | 9.0 | 6.3 |
| Average night temperature (°C) | 0.6 | 1.3 | 2.9 | 8.2 | 14.2 | 18.1 | 21.5 | 21.0 | 17.2 | 11.5 | 4.5 | 2.9 |
| Absolute minimum temperature (°C) | -10.2 | -9.2 | -6.1 | 1.7 | 5.6 | 13.0 | 17.7 | 15.0 | 12.6 | -1.5 | -4.4 | -4.5 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.3 | 7.2 | 6.9 | 10.3 | 10.8 | 12.5 | 11.5 | 9.7 | 10.2 | 7.5 | 7.8 | 5.9 |
| Precipitation (mm) | 80 | 61 | 217 | 65 | 110 | 71 | 137 | 126 | 37 | 63 | 21 | 79 |
| Sunny days | 16 | 18 | 15 | 21 | 15 | 19 | 8 | 12 | 16 | 18 | 23 | 17 |
| Rainy days | 14 | 10 | 16 | 9 | 16 | 11 | 23 | 19 | 14 | 13 | 7 | 14 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Merrimac during the most sunny months:
The largest precipitation sum in Merrimac is at