Average annual temperature is 9.1 °C
Absolute maximum temperature: 31.0 °C
Absolute minimum temperature: -14.2 °C
Number of sunny days: 141 days
Number of rainy days: 200 days
Number of snow days: 24 days
Look at detailed online map of Cosio Valtellino
* Weather data for Cosio Valtellino Italy is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 11.2 | 13.6 | 16.3 | 17.9 | 20.2 | 26.7 | 28.5 | 31.0 | 24.5 | 24.3 | 12.6 | 12.5 |
| Average daytime temperature (°C) | 4.4 | 7.7 | 9.6 | 11.3 | 15.7 | 20.8 | 23.0 | 23.3 | 20.1 | 16.2 | 7.4 | 6.1 |
| Average temperature (°C) | 0.6 | 2.8 | 4.5 | 6.5 | 11.4 | 16.3 | 18.2 | 18.0 | 15.3 | 11.6 | 2.6 | 1.5 |
| Average night temperature (°C) | -3.3 | -1.7 | -0.8 | 1.0 | 7.2 | 11.4 | 12.4 | 12.4 | 9.9 | 6.5 | -2.2 | -2.4 |
| Absolute minimum temperature (°C) | -7.5 | -7.5 | -4.9 | -4.3 | 2.2 | 8.0 | 5.8 | 6.1 | 4.2 | 0.7 | -6.9 | -14.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.7 | 15.4 | 14.1 | 12.6 | 10.9 | 9.5 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 6.0 | 8.1 | 8.3 | 9.7 | 9.6 | 12.6 | 12.8 | 10.9 | 9.6 | 7.3 | 6.4 | 5.5 |
| Precipitation (mm) | 52 | 9 | 77 | 104 | 239 | 164 | 192 | 227 | 199 | 292 | 103 | 126 |
| Sunny days | 19 | 20 | 9 | 10 | 1 | 5 | 4 | 11 | 13 | 15 | 15 | 19 |
| Rainy days | 6 | 2 | 18 | 19 | 30 | 25 | 27 | 20 | 17 | 16 | 12 | 8 |
| Snow days | 6 | 6 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 |
The best time to visit Cosio Valtellino during the most sunny months:
Months with the longest average daylight duration in Cosio Valtellino:
The largest precipitation sum in Cosio Valtellino is at