Average annual temperature is 12.7 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -13.8 °C
Number of sunny days: 177 days
Number of rainy days: 182 days
Number of snow days: 6 days
Look at detailed online map of Locust Valley
* Weather data for Locust Valley 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) | 18.3 | 17.8 | 17.5 | 31.6 | 30.1 | 35.2 | 33.8 | 31.7 | 35.5 | 27.8 | 20.4 | 15.9 |
| Average daytime temperature (°C) | 8.1 | 9.1 | 10.5 | 19.2 | 23.0 | 26.6 | 30.2 | 27.7 | 24.4 | 19.3 | 11.0 | 8.5 |
| Average temperature (°C) | 4.4 | 3.6 | 4.8 | 12.7 | 16.0 | 20.3 | 24.4 | 22.5 | 19.2 | 14.1 | 5.9 | 4.5 |
| Average night temperature (°C) | 1.2 | -0.8 | 0.2 | 7.4 | 9.2 | 14.9 | 19.6 | 18.1 | 15.1 | 9.7 | 1.8 | 1.3 |
| Absolute minimum temperature (°C) | -4.7 | -13.8 | -5.4 | -0.8 | 3.6 | 9.7 | 15.3 | 14.2 | 9.2 | 2.9 | -5.0 | -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) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 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) | 4.4 | 6.7 | 7.4 | 8.6 | 11.6 | 10.7 | 11.9 | 10.3 | 8.0 | 8.1 | 7.4 | 4.7 |
| Precipitation (mm) | 109 | 42 | 79 | 92 | 37 | 152 | 114 | 85 | 146 | 49 | 69 | 187 |
| Sunny days | 11 | 15 | 11 | 13 | 21 | 14 | 8 | 14 | 14 | 22 | 19 | 15 |
| Rainy days | 19 | 12 | 19 | 17 | 10 | 16 | 23 | 17 | 16 | 9 | 10 | 14 |
| Snow days | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Locust Valley during the most sunny months:
The largest precipitation sum in Locust Valley is at