Irondale, MO
Climate overview — based on NOAA 1991-2020 normals from POTOSI 4 SW, MO US.
Year-round temperatures (°F)
Climate summary
Irondale has an annual average temperature of 54.8°F with about 45.5 inches of precipitation per year and 11.5 inches of snow. The warmest month is July (average high 86.0°F), and the coldest is January (average low 21.4°F). May is typically the wettest month (5.29 in) and February the driest (2.69 in). Snow typically falls from November through March.
Best time to visit Irondale
Full guide →Climate change signal
All-time records →66 of 366 (18%) of Irondale'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.
| 1890s | 53 | |
| 1900s | 73 | |
| 1940s | 0 | |
| 1950s | 0 | |
| 1980s | 80 | |
| 1990s | 18 | |
| 2000s | 43 | |
| 2010s | 59 | |
| 2020s | 40 |
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 | 39.6°F | 21.4°F | 30.5°F | 2.84 in | 3.6 in | 7 |
| February | 45.3°F | 25.2°F | 35.2°F | 2.69 in | 2.9 in | 8 |
| March | 55.1°F | 33.5°F | 44.3°F | 4.09 in | 1.9 in | 11 |
| April | 66.3°F | 44.3°F | 55.3°F | 5.11 in | — | 11 |
| May | 74.0°F | 54.1°F | 64.1°F | 5.29 in | — | 13 |
| June | 81.9°F | 62.8°F | 72.3°F | 4.15 in | — | 10 |
| July | 86.0°F | 66.7°F | 76.3°F | 3.64 in | — | 9 |
| August | 85.2°F | 65.0°F | 75.1°F | 4.00 in | — | 9 |
| September | 77.8°F | 56.9°F | 67.4°F | 3.89 in | — | 7 |
| October | 67.5°F | 46.2°F | 56.9°F | 3.07 in | — | 8 |
| November | 54.1°F | 35.3°F | 44.7°F | 3.72 in | 0.7 in | 8 |
| December | 43.4°F | 26.4°F | 34.9°F | 2.97 in | 2.4 in | 9 |
Climate twins of Irondale
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).