Average annual temperature is 13.0 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: -6.0 °C
Number of sunny days: 240 days
Number of rainy days: 121 days
Number of snow days: 4 days
Look at detailed online map of Loch Lomond
* Weather data for Loch Lomond 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) | 15.7 | 19.3 | 14.2 | 28.4 | 28.3 | 35.4 | 38.7 | 37.8 | 32.9 | 30.3 | 22.1 | 16.7 |
| Average daytime temperature (°C) | 9.3 | 10.3 | 7.8 | 16.8 | 20.6 | 25.6 | 33.3 | 31.3 | 25.3 | 21.8 | 14.6 | 11.7 |
| Average temperature (°C) | 5.1 | 4.6 | 3.0 | 9.9 | 14.1 | 18.1 | 25.3 | 23.7 | 17.9 | 15.2 | 9.9 | 7.8 |
| Average night temperature (°C) | 2.6 | 1.0 | -0.2 | 4.7 | 8.9 | 12.0 | 17.7 | 17.2 | 12.4 | 10.8 | 6.3 | 4.9 |
| Absolute minimum temperature (°C) | -1.6 | -4.5 | -6.0 | -3.0 | 1.8 | 5.3 | 10.8 | 13.5 | 8.5 | 1.8 | 1.2 | -0.8 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.7 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 5.5 | 7.7 | 7.3 | 11.2 | 12.1 | 13.6 | 13.5 | 12.3 | 11.3 | 8.8 | 7.6 | 5.1 |
| Precipitation (mm) | 444 | 144 | 362 | 19 | 48 | 1 | 0 | 3 | 16 | 37 | 88 | 251 |
| Sunny days | 13 | 17 | 9 | 24 | 17 | 25 | 31 | 26 | 24 | 22 | 18 | 14 |
| Rainy days | 18 | 7 | 22 | 6 | 14 | 5 | 0 | 5 | 6 | 9 | 12 | 17 |
| Snow days | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Loch Lomond during the most sunny months:
The largest precipitation sum in Loch Lomond is at