South Milwaukee, WI
Climate overview — based on NOAA 1991-2020 normals from SOUTH MILWAUKEE WWTP, WI US.
Year-round temperatures (°F)
Climate summary
South Milwaukee has an annual average temperature of 48.4°F with about 36.6 inches of precipitation per year. The warmest month is July (average high 80.2°F), and the coldest is January (average low 15.9°F). June is typically the wettest month (4.58 in) and January the driest (1.65 in).
Best time to visit South Milwaukee
Full guide →Climate change signal
All-time records →229 of 366 (62.6%) of South Milwaukee'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 | 51 | |
| 2010s | 194 | |
| 2020s | 121 |
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 | 30.4°F | 15.9°F | 23.2°F | 1.65 in | — | 10 |
| February | 33.2°F | 18.1°F | 25.7°F | 1.84 in | — | 9 |
| March | 42.4°F | 27.5°F | 35.0°F | 2.20 in | — | 10 |
| April | 52.8°F | 37.3°F | 45.0°F | 4.08 in | — | 13 |
| May | 64.1°F | 47.3°F | 55.7°F | 4.18 in | — | 14 |
| June | 74.5°F | 57.3°F | 65.9°F | 4.58 in | — | 13 |
| July | 80.2°F | 64.9°F | 72.6°F | 3.51 in | — | 9 |
| August | 79.3°F | 64.2°F | 71.7°F | 3.80 in | — | 11 |
| September | 73.0°F | 56.0°F | 64.5°F | 3.30 in | — | 10 |
| October | 60.7°F | 43.9°F | 52.3°F | 3.40 in | — | 12 |
| November | 47.8°F | 32.6°F | 40.2°F | 2.14 in | — | 9 |
| December | 35.8°F | 22.1°F | 29.0°F | 1.90 in | — | 11 |
Climate twins of South Milwaukee
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).