Average annual temperature is 15.3 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -6.4 °C
Number of sunny days: 182 days
Number of rainy days: 180 days
Number of snow days: 3 days
Look at detailed online map of Mountain Ash
* Weather data for Mountain Ash 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) | 19.7 | 26.1 | 25.7 | 28.1 | 28.5 | 32.7 | 35.7 | 36.6 | 34.5 | 30.2 | 26.0 | 19.0 |
| Average daytime temperature (°C) | 12.4 | 15.0 | 16.0 | 20.7 | 25.0 | 28.1 | 31.2 | 29.8 | 27.9 | 22.2 | 16.8 | 12.6 |
| Average temperature (°C) | 7.0 | 9.1 | 9.4 | 14.2 | 18.4 | 21.7 | 25.0 | 24.1 | 21.2 | 16.0 | 9.8 | 6.9 |
| Average night temperature (°C) | 3.5 | 4.7 | 4.7 | 8.8 | 12.9 | 16.1 | 20.1 | 19.4 | 15.8 | 11.0 | 5.0 | 3.2 |
| Absolute minimum temperature (°C) | -5.3 | -5.8 | -6.4 | 1.7 | 4.7 | 10.0 | 15.8 | 13.5 | 11.9 | 3.7 | -5.1 | -5.2 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 5.1 | 6.2 | 8.3 | 9.5 | 10.5 | 10.9 | 11.2 | 10.1 | 10.6 | 8.2 | 7.7 | 6.2 |
| Precipitation (mm) | 115 | 98 | 110 | 84 | 73 | 96 | 86 | 89 | 41 | 23 | 48 | 95 |
| Sunny days | 10 | 14 | 19 | 18 | 12 | 14 | 8 | 13 | 18 | 20 | 21 | 15 |
| Rainy days | 20 | 13 | 11 | 12 | 19 | 16 | 23 | 18 | 12 | 11 | 9 | 16 |
| Snow days | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mountain Ash during the most sunny months:
The largest precipitation sum in Mountain Ash is at