Sister Bay, WI
Climate overview — based on NOAA 1991-2020 normals from EPHRAIM 1NE-WWTP, WI US.
Year-round temperatures (°F)
Climate summary
Sister Bay has an annual average temperature of 44.7°F with about 31 inches of precipitation per year and 61.6 inches of snow. The warmest month is July (average high 79.6°F), and the coldest is January (average low 12.0°F). October is typically the wettest month (3.61 in) and February the driest (1.06 in). Snow typically falls from November through April.
Best time to visit Sister Bay
Full guide →Climate change signal
All-time records →209 of 366 (57.1%) of Sister Bay'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 | 24 | |
| 2010s | 242 | |
| 2020s | 100 |
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 | 26.7°F | 12.0°F | 19.4°F | 1.71 in | 16.8 in | 9 |
| February | 29.1°F | 12.8°F | 21.0°F | 1.06 in | 14.1 in | 7 |
| March | 38.6°F | 21.1°F | 29.8°F | 1.66 in | 7.9 in | 7 |
| April | 51.0°F | 31.1°F | 41.1°F | 2.71 in | 6.4 in | 9 |
| May | 64.5°F | 41.9°F | 53.2°F | 3.46 in | — | 11 |
| June | 73.8°F | 52.5°F | 63.1°F | 3.31 in | — | 12 |
| July | 79.6°F | 57.8°F | 68.7°F | 3.05 in | — | 10 |
| August | 78.3°F | 56.6°F | 67.4°F | 3.03 in | — | 10 |
| September | 70.3°F | 51.2°F | 60.8°F | 3.41 in | — | 9 |
| October | 57.1°F | 40.5°F | 48.8°F | 3.61 in | 0.1 in | 14 |
| November | 43.5°F | 30.2°F | 36.9°F | 2.27 in | 2.5 in | 9 |
| December | 32.5°F | 19.0°F | 25.8°F | 1.70 in | 13.8 in | 10 |
Climate twins of Sister Bay
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).