Average annual temperature is 11.3 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: -7.1 °C
Number of sunny days: 222 days
Number of rainy days: 129 days
Number of snow days: 14 days
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) | 12.5 | 17.6 | 12.3 | 27.1 | 26.5 | 33.1 | 38.0 | 36.2 | 31.2 | 28.0 | 20.4 | 16.4 |
| Average daytime temperature (°C) | 6.4 | 8.8 | 5.5 | 14.8 | 19.6 | 24.2 | 31.8 | 29.6 | 23.1 | 20.5 | 13.9 | 11.2 |
| Average temperature (°C) | 2.2 | 2.7 | 1.4 | 8.0 | 13.2 | 17.2 | 24.5 | 22.3 | 16.5 | 13.2 | 7.7 | 5.8 |
| Average night temperature (°C) | -0.6 | -1.3 | -1.6 | 2.3 | 6.9 | 10.2 | 16.1 | 15.2 | 10.6 | 8.1 | 3.5 | 2.4 |
| Absolute minimum temperature (°C) | -6.7 | -7.1 | -6.7 | -6.9 | 1.4 | 4.1 | 8.5 | 11.4 | 6.5 | -0.3 | -0.9 | -1.5 |
| 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) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 4.8 | 6.9 | 5.6 | 10.5 | 11.3 | 12.9 | 13.6 | 11.9 | 11.0 | 9.1 | 7.8 | 5.2 |
| Precipitation (mm) | 438 | 202 | 510 | 48 | 67 | 14 | 0 | 27 | 60 | 15 | 94 | 192 |
| Sunny days | 11 | 15 | 7 | 21 | 14 | 17 | 30 | 24 | 23 | 23 | 20 | 17 |
| Rainy days | 19 | 6 | 19 | 9 | 17 | 13 | 1 | 7 | 7 | 8 | 9 | 14 |
| Snow days | 1 | 7 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Merrimac during the most sunny months:
The largest precipitation sum in Merrimac is at