Average annual temperature is 13.2 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -5.4 °C
Number of sunny days: 176 days
Number of rainy days: 187 days
Number of snow days: 2 days
Look at detailed online map of Grello
* Weather data for Grello 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) | 13.1 | 16.7 | 17.3 | 19.0 | 22.2 | 31.4 | 35.5 | 34.1 | 30.4 | 28.1 | 17.1 | 16.7 |
| Average daytime temperature (°C) | 7.5 | 8.4 | 12.0 | 13.1 | 18.2 | 23.6 | 29.5 | 28.4 | 24.6 | 22.1 | 12.6 | 10.2 |
| Average temperature (°C) | 4.5 | 4.4 | 8.1 | 8.8 | 14.0 | 18.8 | 24.0 | 22.4 | 19.2 | 17.0 | 9.4 | 6.8 |
| Average night temperature (°C) | 1.7 | 1.3 | 4.6 | 4.8 | 10.3 | 14.3 | 18.3 | 16.7 | 14.9 | 12.8 | 6.0 | 3.7 |
| Absolute minimum temperature (°C) | -5.4 | -3.3 | 0.5 | -1.1 | 6.2 | 11.8 | 14.3 | 11.9 | 11.9 | 9.6 | -2.8 | -1.2 |
| 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 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 5.1 | 7.0 | 7.8 | 9.6 | 9.4 | 12.4 | 13.4 | 12.2 | 10.4 | 8.5 | 5.5 | 5.9 |
| Precipitation (mm) | 160 | 59 | 66 | 97 | 142 | 108 | 31 | 56 | 33 | 70 | 141 | 40 |
| Sunny days | 15 | 20 | 10 | 10 | 4 | 11 | 18 | 22 | 21 | 14 | 12 | 19 |
| Rainy days | 15 | 7 | 21 | 20 | 27 | 19 | 13 | 9 | 9 | 17 | 18 | 12 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Grello during the most sunny months:
Months with the longest average daylight duration in Grello:
The largest precipitation sum in Grello is at