Greendale, WI
Climate overview — based on NOAA 1991-2020 normals from HALES CORNERS/WHITNALL PARK/BO, WI US.
Year-round temperatures (°F)
Climate summary
Greendale has an annual average temperature of 47.3°F with about 38.4 inches of precipitation per year. The warmest month is July (average high 82.8°F), and the coldest is January (average low 12.2°F). June is typically the wettest month (5.63 in) and January the driest (1.80 in).
Best time to visit Greendale
Full guide →Climate change signal
All-time records →187 of 366 (51.1%) of Greendale'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 | 86 | |
| 2010s | 193 | |
| 2020s | 87 |
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 | 29.8°F | 12.2°F | 21.0°F | 1.80 in | — | 10 |
| February | 33.3°F | 14.6°F | 23.9°F | 1.87 in | — | 9 |
| March | 44.1°F | 23.9°F | 34.0°F | 2.07 in | — | 8 |
| April | 56.0°F | 34.5°F | 45.2°F | 4.10 in | — | 11 |
| May | 68.1°F | 45.5°F | 56.8°F | 4.28 in | — | 13 |
| June | 77.7°F | 55.9°F | 66.8°F | 5.63 in | — | 12 |
| July | 82.8°F | 60.5°F | 71.7°F | 3.75 in | — | 9 |
| August | 81.1°F | 59.2°F | 70.1°F | 3.79 in | — | 10 |
| September | 74.2°F | 51.3°F | 62.7°F | 3.77 in | — | 10 |
| October | 61.5°F | 39.7°F | 50.6°F | 3.01 in | — | 12 |
| November | 46.5°F | 28.5°F | 37.5°F | 2.28 in | — | 9 |
| December | 35.0°F | 18.3°F | 26.7°F | 2.09 in | — | 10 |
Climate twins of Greendale
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).