Average annual temperature is 4.6 °C
Absolute maximum temperature: 31.6 °C
Absolute minimum temperature: -29.2 °C
Number of sunny days: 210 days
Number of rainy days: 111 days
Number of snow days: 44 days
Look at detailed online map of Perth
* Weather data for Perth 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) | 0.5 | 1.7 | 0.2 | 11.5 | 27.7 | 31.4 | 31.6 | 30.4 | 30.4 | 25.5 | 8.7 | 8.5 |
| Average daytime temperature (°C) | -8.4 | -6.3 | -6.4 | 3.5 | 21.9 | 26.0 | 24.5 | 24.5 | 21.5 | 10.2 | 2.0 | 0.9 |
| Average temperature (°C) | -11.9 | -11.6 | -10.9 | -0.7 | 15.0 | 20.3 | 18.6 | 19.2 | 15.9 | 5.6 | -1.6 | -3.3 |
| Average night temperature (°C) | -14.8 | -16.2 | -14.5 | -4.4 | 8.7 | 15.0 | 13.3 | 14.7 | 11.3 | 2.1 | -4.5 | -6.1 |
| Absolute minimum temperature (°C) | -28.6 | -29.2 | -20.4 | -14.1 | -1.0 | 8.5 | 8.6 | 8.8 | 3.6 | -14.6 | -12.9 | -12.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.8 | 10.2 | 11.9 | 13.7 | 15.3 | 16.1 | 15.7 | 14.3 | 12.6 | 10.8 | 9.2 | 8.4 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.1 | 7.1 | 7.9 | 8.1 | 11.4 | 12.8 | 13.0 | 10.1 | 9.3 | 6.5 | 5.2 | 5.8 |
| Precipitation (mm) | 6 | 8 | 26 | 55 | 29 | 85 | 16 | 60 | 86 | 78 | 7 | 9 |
| Sunny days | 24 | 18 | 20 | 15 | 16 | 11 | 13 | 14 | 17 | 16 | 19 | 27 |
| Rainy days | 1 | 0 | 0 | 10 | 15 | 19 | 18 | 17 | 13 | 12 | 5 | 1 |
| Snow days | 6 | 10 | 11 | 5 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 3 |
The best time to visit Perth during the most sunny months:
Months with the longest average daylight duration in Perth:
The largest precipitation sum in Perth is at