Mertzon, TX
Climate overview — based on NOAA 1991-2020 normals from MERTZON 12NNW, TX US.
Year-round temperatures (°F)
Climate summary
Mertzon has an annual average temperature of 63.9°F with about 21.6 inches of precipitation per year. The warmest month is August (average high 94.6°F), and the coldest is January (average low 29.3°F). May is typically the wettest month (2.64 in) and January the driest (0.89 in).
Best time to visit Mertzon
Full guide →Climate change signal
All-time records →235 of 366 (64.2%) of Mertzon'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.
| 2000s | 38 | |
| 2010s | 186 | |
| 2020s | 142 |
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 | 58.2°F | 29.3°F | 43.8°F | 0.89 in | — | — |
| February | 63.5°F | 33.1°F | 48.3°F | 1.03 in | — | — |
| March | 70.5°F | 40.5°F | 55.5°F | 1.52 in | — | — |
| April | 79.5°F | 48.5°F | 64.0°F | 1.57 in | — | — |
| May | 86.9°F | 58.5°F | 72.7°F | 2.64 in | — | — |
| June | 92.6°F | 67.4°F | 80.0°F | 2.54 in | — | — |
| July | 94.2°F | 69.6°F | 81.9°F | 1.90 in | — | — |
| August | 94.6°F | 69.4°F | 82.0°F | 2.35 in | — | — |
| September | 87.4°F | 62.0°F | 74.7°F | 2.59 in | — | — |
| October | 79.5°F | 50.9°F | 65.2°F | 2.17 in | — | — |
| November | 67.8°F | 38.5°F | 53.2°F | 1.47 in | — | — |
| December | 60.1°F | 30.7°F | 45.4°F | 0.90 in | — | — |
Climate twins of Mertzon
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).