Average annual temperature is 16.7 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: 0.3 °C
Number of sunny days: 254 days
Number of rainy days: 111 days
Look at detailed online map of City of Upland
* Weather data for City of Upland 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) | 18.6 | 22.5 | 19.9 | 30.2 | 27.8 | 33.7 | 37.9 | 38.8 | 34.9 | 34.6 | 27.6 | 24.1 |
| Average daytime temperature (°C) | 13.9 | 14.8 | 14.5 | 22.0 | 21.6 | 24.5 | 33.9 | 32.5 | 27.3 | 26.5 | 21.7 | 18.4 |
| Average temperature (°C) | 9.8 | 9.2 | 9.9 | 15.1 | 15.5 | 17.6 | 26.6 | 25.8 | 21.3 | 20.0 | 15.8 | 13.7 |
| Average night temperature (°C) | 6.8 | 5.0 | 6.7 | 10.3 | 11.7 | 13.1 | 20.9 | 20.7 | 17.2 | 15.3 | 11.4 | 9.7 |
| Absolute minimum temperature (°C) | 1.8 | 0.3 | 1.2 | 1.7 | 7.3 | 11.1 | 13.8 | 16.5 | 13.7 | 9.3 | 5.0 | 6.2 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.3 | 8.0 | 7.3 | 11.2 | 11.3 | 12.1 | 13.1 | 11.5 | 10.3 | 10.2 | 9.0 | 7.8 |
| Precipitation (mm) | 349 | 185 | 373 | 30 | 65 | 9 | 0 | 103 | 78 | 18 | 34 | 67 |
| Sunny days | 15 | 14 | 9 | 24 | 18 | 23 | 30 | 26 | 25 | 26 | 21 | 23 |
| Rainy days | 16 | 14 | 22 | 6 | 13 | 7 | 1 | 5 | 5 | 5 | 9 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit City of Upland during the most sunny months:
The largest precipitation sum in City of Upland is at