Romulus, MI
Climate overview — based on NOAA 1991-2020 normals from DETROIT METRO AP, MI US.
Year-round temperatures (°F)
Climate summary
Romulus has an annual average temperature of 50.6°F with about 34.3 inches of precipitation per year and 45 inches of snow. The warmest month is July (average high 83.7°F), and the coldest is January (average low 19.2°F). May is typically the wettest month (3.72 in) and February the driest (2.08 in). Snow typically falls from November through April.
Best time to visit Romulus
Full guide →Climate change signal
All-time records →65 of 366 (17.8%) of Romulus'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.
| 1950s | 3 | |
| 1960s | 49 | |
| 1970s | 62 | |
| 1980s | 57 | |
| 1990s | 52 | |
| 2000s | 39 | |
| 2010s | 75 | |
| 2020s | 29 |
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 | 32.3°F | 19.2°F | 25.8°F | 2.23 in | 14.0 in | 13 |
| February | 35.2°F | 20.8°F | 28.0°F | 2.08 in | 12.5 in | 11 |
| March | 45.9°F | 28.6°F | 37.2°F | 2.43 in | 6.2 in | 11 |
| April | 58.7°F | 39.1°F | 48.9°F | 3.26 in | 1.5 in | 13 |
| May | 70.3°F | 50.2°F | 60.3°F | 3.72 in | — | 13 |
| June | 79.7°F | 60.2°F | 69.9°F | 3.26 in | — | 11 |
| July | 83.7°F | 64.4°F | 74.1°F | 3.51 in | — | 11 |
| August | 81.4°F | 63.2°F | 72.3°F | 3.26 in | — | 10 |
| September | 74.4°F | 55.5°F | 64.9°F | 3.22 in | — | 10 |
| October | 62.0°F | 44.0°F | 53.0°F | 2.53 in | — | 11 |
| November | 48.6°F | 33.9°F | 41.2°F | 2.57 in | 1.9 in | 11 |
| December | 37.2°F | 25.3°F | 31.3°F | 2.25 in | 8.9 in | 13 |
Climate twins of Romulus
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).