Average annual temperature is 24.8 °C
Absolute maximum temperature: 45.1 °C
Absolute minimum temperature: 3.1 °C
Number of sunny days: 222 days
Number of rainy days: 143 days
Look at detailed online map of Starr County
* Weather data for Starr County 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) | 32.1 | 36.4 | 38.2 | 36.0 | 36.2 | 45.1 | 40.8 | 42.0 | 41.0 | 38.1 | 32.2 | 27.6 |
| Average daytime temperature (°C) | 25.4 | 26.1 | 31.1 | 29.0 | 31.4 | 39.0 | 38.6 | 39.0 | 38.1 | 31.0 | 23.2 | 22.6 |
| Average temperature (°C) | 19.1 | 18.6 | 23.2 | 23.1 | 26.1 | 31.2 | 31.7 | 31.9 | 31.4 | 25.1 | 18.8 | 17.4 |
| Average night temperature (°C) | 14.7 | 13.9 | 18.3 | 19.0 | 22.0 | 25.4 | 26.3 | 26.6 | 26.2 | 21.0 | 15.4 | 13.4 |
| Absolute minimum temperature (°C) | 5.1 | 3.1 | 7.4 | 13.9 | 18.4 | 21.8 | 24.3 | 23.4 | 24.3 | 9.1 | 9.4 | 5.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.7 | 11.3 | 12.0 | 12.8 | 13.4 | 13.8 | 13.6 | 13.1 | 12.3 | 11.5 | 10.9 | 10.5 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.8 | 8.7 | 8.3 | 8.5 | 10.1 | 12.5 | 12.4 | 11.7 | 11.1 | 8.1 | 5.8 | 7.2 |
| Precipitation (mm) | 10 | 9 | 11 | 98 | 103 | 21 | 32 | 60 | 4 | 39 | 98 | 26 |
| Sunny days | 24 | 20 | 17 | 11 | 11 | 21 | 23 | 20 | 20 | 15 | 17 | 23 |
| Rainy days | 7 | 8 | 14 | 19 | 20 | 9 | 8 | 11 | 10 | 16 | 13 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Starr County during the most sunny months:
The largest precipitation sum in Starr County is at