May weather in Fontana-on-Geneva Lake, WI
The average temperature in Fontana-on-Geneva Lake in May is 57.9°F (46.9°F–68.8°F). Average precipitation: 4.19 inches.
May is a spring month in Fontana-on-Geneva Lake, and is warmer than the annual average of 47.6°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Daylight averages about 14h 26m. For travel, May is a comfortable month to visit.
Avg High
68.8°F
Avg Low
46.9°F
Precipitation
4.19 in
Daylight
14h 26m
May records in Fontana-on-Geneva Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.9°F (2013) | 33.1°F (2015) | 1.13 in (2017) |
| May 2 | 86.0°F (2021) | 32.0°F (2015) | 0.37 in (2017) |
| May 3 | 86.0°F (2021) | 30.9°F (2017) | 1.13 in (2018) |
| May 4 | 84.0°F (2012) | 34.0°F (2022) | 0.61 in (2015) |
| May 5 | 80.1°F (2024) | 35.1°F (2017) | 0.50 in (2015) |
| May 6 | 80.1°F (2018) | 33.1°F (2020) | 0.79 in (2019) |
| May 7 | 82.9°F (2016) | 30.9°F (2017) | 1.07 in (2012) |
| May 8 | 84.0°F (2023) | 33.1°F (2021) | 1.82 in (2024) |
| May 9 | 86.0°F (2014) | 28.9°F (2020) | 1.20 in (2019) |
| May 10 | 82.0°F (2022) | 30.0°F (2020) | 1.10 in (2013) |
| May 11 | 90.0°F (2022) | 30.9°F (2021) | 0.70 in (2016) |
| May 12 | 91.9°F (2022) | 32.0°F (2020) | 0.25 in (2018) |
| May 13 | 93.0°F (2022) | 30.9°F (2013) | 1.10 in (2014) |
| May 14 | 91.0°F (2022) | 30.9°F (2013) | 0.56 in (2020) |
| May 15 | 91.0°F (2022) | 30.0°F (2016) | 0.62 in (2020) |
| May 16 | 93.0°F (2025) | 35.1°F (2016) | 0.55 in (2017) |
| May 17 | 86.0°F (2025) | 35.1°F (2014) | 0.87 in (2020) |
| May 18 | 82.9°F (2013) | 35.1°F (2016) | 0.86 in (2020) |
| May 19 | 87.1°F (2024) | 37.0°F (2016) | 0.23 in (2021) |
| May 20 | 91.0°F (2012) | 37.9°F (2015) | 0.36 in (2019) |
| May 21 | 91.0°F (2012) | 41.0°F (2015) | 1.05 in (2025) |
| May 22 | 87.1°F (2024) | 41.0°F (2012) | 0.58 in (2019) |
| May 23 | 87.1°F (2021) | 39.0°F (2022) | 0.97 in (2019) |
| May 24 | 82.9°F (2016) | 34.0°F (2013) | 0.95 in (2019) |
| May 25 | 90.0°F (2012) | 39.0°F (2025) | 1.13 in (2015) |
| May 26 | 87.1°F (2018) | 37.0°F (2023) | 0.70 in (2016) |
| May 27 | 90.0°F (2018) | 41.0°F (2025) | 0.61 in (2024) |
| May 28 | 96.1°F (2018) | 43.0°F (2021) | 1.20 in (2014) |
| May 29 | 91.0°F (2018) | 35.1°F (2021) | 0.81 in (2017) |
| May 30 | 88.0°F (2018) | 35.1°F (2021) | 0.45 in (2019) |
| May 31 | 90.0°F (2022) | 39.0°F (2015) | 0.96 in (2018) |