April weather in Fontana-on-Geneva Lake, WI
The average temperature in Fontana-on-Geneva Lake in April is 46.4°F (35.7°F–57.0°F). Average precipitation: 3.66 inches.
April is a spring month in Fontana-on-Geneva Lake, and is cooler than the annual average of 47.6°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Daylight averages about 13h 10m. For travel, April is cool.
Avg High
57.0°F
Avg Low
35.7°F
Precipitation
3.66 in
Daylight
13h 10m
April records in Fontana-on-Geneva Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 79.0°F (2026) | 19.9°F (2018) | 1.10 in (2018) |
| April 2 | 73.0°F (2015) | 17.1°F (2023) | 0.61 in (2026) |
| April 3 | 66.9°F (2025) | 21.9°F (2013) | 1.58 in (2024) |
| April 4 | 70.0°F (2016) | 24.1°F (2018) | 1.18 in (2026) |
| April 5 | 75.0°F (2021) | 19.9°F (2018) | 1.97 in (2023) |
| April 6 | 73.9°F (2021) | 24.1°F (2018) | 0.65 in (2016) |
| April 7 | 79.0°F (2021) | 18.0°F (2018) | 0.10 in (2013) |
| April 8 | 78.1°F (2020) | 17.1°F (2018) | 0.64 in (2013) |
| April 9 | 69.1°F (2026) | 19.9°F (2016) | 0.60 in (2013) |
| April 10 | 73.9°F (2017) | 27.0°F (2016) | 1.44 in (2013) |
| April 11 | 73.0°F (2017) | 28.9°F (2022) | 0.91 in (2013) |
| April 12 | 79.0°F (2023) | 26.1°F (2016) | 0.23 in (2019) |
| April 13 | 82.0°F (2023) | 28.0°F (2012) | 0.42 in (2020) |
| April 14 | 82.0°F (2023) | 28.0°F (2020) | 1.25 in (2014) |
| April 15 | 82.9°F (2023) | 24.1°F (2014) | 1.03 in (2026) |
| April 16 | 82.9°F (2023) | 24.1°F (2020) | 1.91 in (2026) |
| April 17 | 77.0°F (2016) | 24.1°F (2020) | 0.58 in (2024) |
| April 18 | 79.0°F (2016) | 25.0°F (2020) | 2.58 in (2013) |
| April 19 | 80.1°F (2016) | 33.1°F (2014) | 0.39 in (2018) |
| April 20 | 80.1°F (2016) | 23.0°F (2018) | 0.45 in (2017) |
| April 21 | 78.1°F (2014) | 28.0°F (2021) | 0.39 in (2023) |
| April 22 | 70.0°F (2016) | 25.0°F (2021) | 0.16 in (2022) |
| April 23 | 73.0°F (2025) | 26.1°F (2015) | 1.28 in (2022) |
| April 24 | 81.0°F (2022) | 26.1°F (2015) | 0.48 in (2013) |
| April 25 | 77.0°F (2016) | 28.9°F (2023) | 0.17 in (2014) |
| April 26 | 81.0°F (2016) | 28.0°F (2023) | 0.31 in (2019) |
| April 27 | 79.0°F (2021) | 28.9°F (2015) | 0.89 in (2017) |
| April 28 | 82.9°F (2021) | 30.9°F (2015) | 1.07 in (2024) |
| April 29 | 84.0°F (2025) | 26.1°F (2018) | 1.41 in (2020) |
| April 30 | 72.0°F (2021) | 30.0°F (2018) | 0.82 in (2020) |