Annual mean
Annual mean of daily highs
Annual mean of daily lows
Hanover CDP, Wisconsin
Official LSAD Designation: Hanover CDP • Census GEOID: 5532550
• Rock County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Hanover CDP.
Reference Weather Station: AFTON - JANESVILLE WWTP, WI US (ID: USC00470045)
• Located 5.4 miles from community center
• Elevation: 232.3 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 28.3° | 11.6° | 19.9° | 1.63" |
| February | 32.4° | 14.7° | 23.5° | 1.61" |
| March | 44.6° | 25.4° | 35.0° | 2.06" |
| April | 57.9° | 36.1° | 47.0° | 3.57" |
| May | 69.9° | 48.0° | 58.9° | 4.09" |
| June | 79.9° | 58.0° | 68.9° | 4.99" |
| July | 83.4° | 61.7° | 72.6° | 4.19" |
| August | 81.7° | 59.5° | 70.6° | 4.34" |
| September | 75.1° | 51.0° | 63.0° | 3.73" |
| October | 61.7° | 39.5° | 50.6° | 2.99" |
| November | 46.3° | 28.5° | 37.4° | 2.33" |
| December | 33.5° | 18.1° | 25.8° | 1.90" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station AFTON - JANESVILLE WWTP, WI US (ID: USC00470045) • 5.4 miles from community center .
This is the same reference station used for monthly normals.
Source: NOAA NCEI Global Summary of the Year.
Annual temperature data table (°F)
| Year | Annual mean (°F) | Annual mean of daily highs (°F) | Annual mean of daily lows (°F) |
|---|---|---|---|
| 2010 | 48.9 | 59.2 | 38.7 |
| 2011 | 48.1 | 57.7 | 38.4 |
| 2012 | 51.3 | 62.2 | 40.4 |
| 2013 | 45.8 | 56.0 | 35.6 |
| 2014 | 44.3 | 54.6 | 34.1 |
| 2015 | 47.6 | 58.1 | 37.1 |
| 2016 | 50.2 | 60.1 | 40.4 |
| 2017 | 49.5 | 59.9 | 39.2 |
| 2018 | 47.2 | 56.8 | 37.6 |
| 2019 | 46.5 | 56.0 | 37.0 |
| 2020 | 48.6 | 58.6 | 38.7 |
| 2021 | 49.3 | 59.8 | 38.8 |
| 2022 | 47.1 | 57.3 | 36.9 |
| 2023 | 50.0 | 60.1 | 39.9 |
| 2024 | 51.2 | 61.8 | 40.6 |
| 2025 | 48.6 | 59.4 | 37.8 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.