St. Johns, AZ
Climate overview — based on NOAA 1991-2020 normals from ST JOHNS INDUSTRIAL AP, AZ US.
Year-round temperatures (°F)
Climate summary
St. Johns has an annual average temperature of 54.1°F with about 9.1 inches of precipitation per year. The warmest month is July (average high 91.1°F), and the coldest is December (average low 18.4°F). August is typically the wettest month (2.08 in) and June the driest (0.18 in).
Best time to visit St. Johns
Full guide →Climate change signal
All-time records →132 of 366 (36.1%) of St. Johns'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.
| 1990s | 6 | |
| 2000s | 194 | |
| 2010s | 87 | |
| 2020s | 79 |
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 | 49.5°F | 19.4°F | 34.4°F | 0.43 in | — | 5 |
| February | 54.6°F | 22.7°F | 38.6°F | 0.53 in | — | 4 |
| March | 62.4°F | 27.9°F | 45.1°F | 0.43 in | — | 4 |
| April | 69.9°F | 34.7°F | 52.3°F | 0.29 in | — | 3 |
| May | 79.3°F | 43.5°F | 61.4°F | 0.43 in | — | 3 |
| June | 89.8°F | 53.1°F | 71.5°F | 0.18 in | — | 2 |
| July | 91.1°F | 60.6°F | 75.9°F | 1.41 in | — | 10 |
| August | 87.9°F | 58.5°F | 73.2°F | 2.08 in | — | 11 |
| September | 83.0°F | 50.3°F | 66.6°F | 1.13 in | — | 6 |
| October | 72.2°F | 36.6°F | 54.4°F | 0.69 in | — | 5 |
| November | 59.6°F | 25.9°F | 42.7°F | 0.61 in | — | 3 |
| December | 48.8°F | 18.4°F | 33.6°F | 0.88 in | — | 5 |
Climate twins of St. Johns
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).