Average annual temperature is 12.1 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -20.1 °C
Number of sunny days: 217 days
Number of rainy days: 128 days
Number of snow days: 20 days
Look at detailed online map of Bethesda
* Weather data for Bethesda 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) | 10.6 | 16.1 | 22.6 | 28.8 | 29.8 | 32.5 | 34.6 | 35.3 | 32.9 | 31.5 | 19.7 | 15.1 |
| Average daytime temperature (°C) | 2.6 | 6.4 | 9.4 | 18.7 | 25.3 | 29.3 | 28.4 | 28.6 | 27.0 | 18.8 | 11.6 | 7.1 |
| Average temperature (°C) | -1.8 | -0.4 | 3.1 | 11.3 | 18.7 | 23.4 | 23.4 | 23.7 | 21.1 | 13.6 | 5.9 | 2.7 |
| Average night temperature (°C) | -5.0 | -5.3 | -1.3 | 5.4 | 12.8 | 17.5 | 19.0 | 19.4 | 16.0 | 9.1 | 1.4 | -0.6 |
| Absolute minimum temperature (°C) | -16.2 | -20.1 | -11.7 | -5.4 | 3.1 | 10.4 | 14.2 | 13.0 | 11.0 | -4.9 | -7.7 | -4.8 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.0 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 5.5 | 7.8 | 7.7 | 9.7 | 11.6 | 12.7 | 11.2 | 11.3 | 10.8 | 8.0 | 6.9 | 5.4 |
| Precipitation (mm) | 37 | 69 | 39 | 46 | 78 | 79 | 93 | 57 | 37 | 51 | 10 | 50 |
| Sunny days | 19 | 19 | 17 | 17 | 16 | 17 | 15 | 16 | 23 | 15 | 23 | 20 |
| Rainy days | 5 | 6 | 11 | 12 | 15 | 13 | 16 | 15 | 7 | 15 | 5 | 8 |
| Snow days | 7 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 |
The best time to visit Bethesda during the most sunny months:
The largest precipitation sum in Bethesda is at