Average annual temperature is 18.1 °C
Absolute maximum temperature: 40.6 °C
Absolute minimum temperature: -6.5 °C
Number of sunny days: 205 days
Number of rainy days: 160 days
Look at detailed online map of Halley
* Weather data for Halley 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) | 21.7 | 24.4 | 26.2 | 29.7 | 32.7 | 39.6 | 39.4 | 40.6 | 37.9 | 31.8 | 28.3 | 22.4 |
| Average daytime temperature (°C) | 13.3 | 15.1 | 18.3 | 22.2 | 27.7 | 33.3 | 35.2 | 36.3 | 31.9 | 24.1 | 18.2 | 13.9 |
| Average temperature (°C) | 7.9 | 8.6 | 12.2 | 16.0 | 21.6 | 26.6 | 28.9 | 29.8 | 25.8 | 18.5 | 12.1 | 8.7 |
| Average night temperature (°C) | 3.8 | 4.2 | 7.9 | 11.2 | 16.5 | 21.2 | 24.1 | 24.7 | 20.7 | 14.4 | 7.7 | 4.7 |
| Absolute minimum temperature (°C) | -6.5 | -5.7 | -3.5 | 5.8 | 7.8 | 16.9 | 20.2 | 17.6 | 16.9 | -0.7 | -1.8 | -1.9 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.2 | 5.9 | 7.6 | 9.4 | 10.4 | 11.8 | 11.7 | 12.2 | 10.2 | 7.9 | 8.1 | 7.1 |
| Precipitation (mm) | 57 | 109 | 203 | 117 | 54 | 87 | 75 | 21 | 119 | 160 | 40 | 35 |
| Sunny days | 19 | 14 | 14 | 16 | 14 | 11 | 18 | 21 | 17 | 17 | 22 | 22 |
| Rainy days | 12 | 14 | 17 | 14 | 17 | 19 | 13 | 10 | 13 | 14 | 8 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Halley during the most sunny months:
The largest precipitation sum in Halley is at