Average annual temperature is 12.5 °C
Absolute maximum temperature: 27.8 °C
Absolute minimum temperature: -17.0 °C
Number of sunny days: 180 days
Number of rainy days: 178 days
Number of snow days: 7 days
Look at detailed online map of Southold
* Weather data for Southold 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) | 11.3 | 11.2 | 10.6 | 17.7 | 18.7 | 21.9 | 27.8 | 25.9 | 26.7 | 20.5 | 17.6 | 14.6 |
| Average daytime temperature (°C) | 7.0 | 5.8 | 7.2 | 11.6 | 15.6 | 19.3 | 24.9 | 24.0 | 21.9 | 17.6 | 11.5 | 8.9 |
| Average temperature (°C) | 4.9 | 3.1 | 4.8 | 9.5 | 13.4 | 17.4 | 23.1 | 22.2 | 20.1 | 15.6 | 8.7 | 6.8 |
| Average night temperature (°C) | 3.3 | 0.6 | 3.0 | 7.8 | 11.5 | 15.9 | 21.4 | 20.6 | 18.5 | 14.1 | 6.6 | 5.2 |
| Absolute minimum temperature (°C) | -0.6 | -17.0 | -1.3 | 3.1 | 7.8 | 10.1 | 18.1 | 18.2 | 13.9 | 8.2 | 0.1 | -2.4 |
| 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 | 15.1 | 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) | 4.3 | 6.6 | 7.6 | 8.6 | 12.3 | 11.4 | 11.7 | 10.3 | 7.8 | 8.3 | 7.2 | 5.7 |
| Precipitation (mm) | 157 | 59 | 102 | 95 | 42 | 70 | 92 | 168 | 287 | 79 | 38 | 153 |
| Sunny days | 7 | 13 | 16 | 18 | 23 | 16 | 13 | 10 | 15 | 15 | 18 | 16 |
| Rainy days | 23 | 11 | 15 | 12 | 8 | 14 | 18 | 21 | 15 | 16 | 11 | 14 |
| Snow days | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Southold during the most sunny months:
The largest precipitation sum in Southold is at