Castle Hills, TX
Climate overview — based on NOAA 1991-2020 normals from SAN ANTONIO INTL AP, TX US.
Year-round temperatures (°F)
Climate summary
Castle Hills has an annual average temperature of 69.6°F with about 32.4 inches of precipitation per year and 0.2 inches of snow. The warmest month is August (average high 96.0°F), and the coldest is January (average low 41.0°F). May is typically the wettest month (4.40 in) and February the driest (1.74 in).
Best time to visit Castle Hills
Full guide →Climate change signal
All-time records →103 of 366 (28.1%) of Castle Hills's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 16 | |
| 1950s | 37 | |
| 1960s | 24 | |
| 1970s | 32 | |
| 1980s | 44 | |
| 1990s | 34 | |
| 2000s | 48 | |
| 2010s | 50 | |
| 2020s | 81 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 63.3°F | 41.0°F | 52.2°F | 1.96 in | — | 7 |
| February | 67.5°F | 45.1°F | 56.3°F | 1.74 in | 0.1 in | 7 |
| March | 73.8°F | 51.8°F | 62.8°F | 2.31 in | — | 9 |
| April | 80.3°F | 58.4°F | 69.4°F | 2.42 in | — | 6 |
| May | 86.6°F | 66.4°F | 76.5°F | 4.40 in | — | 8 |
| June | 92.4°F | 72.7°F | 82.6°F | 3.28 in | — | 7 |
| July | 94.9°F | 74.7°F | 84.8°F | 2.41 in | — | 5 |
| August | 96.0°F | 74.9°F | 85.5°F | 2.15 in | — | 5 |
| September | 90.1°F | 69.6°F | 79.9°F | 3.88 in | — | 7 |
| October | 82.2°F | 60.4°F | 71.3°F | 3.75 in | — | 6 |
| November | 71.7°F | 49.8°F | 60.7°F | 2.08 in | — | 6 |
| December | 64.7°F | 42.4°F | 53.5°F | 2.00 in | 0.1 in | 7 |
Climate twins of Castle Hills
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).