May weather in Hermantown, MN
The average temperature in Hermantown in May is 51.6°F (40.2°F–63.0°F). Average precipitation: 3.20 inches.
May is a spring month in Hermantown, and is warmer than the annual average of 39.7°F. Daily temperatures swing about 22.8°F between overnight low and afternoon high. Daylight averages about 14h 50m. For travel, May is a comfortable month to visit.
Avg High
63.0°F
Avg Low
40.2°F
Precipitation
3.20 in
Daylight
14h 50m
May records in Hermantown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 70.0°F (2018) | 21.0°F (2023) | 0.53 in (2022) |
| May 2 | 82.0°F (2021) | 30.9°F (2013) | 0.58 in (2017) |
| May 3 | 78.1°F (2012) | 27.0°F (2013) | 0.20 in (2024) |
| May 4 | 75.9°F (2015) | 24.1°F (2013) | 0.26 in (2019) |
| May 5 | 72.0°F (2018) | 28.0°F (2013) | 0.34 in (2024) |
| May 6 | 82.0°F (2025) | 30.0°F (2014) | 0.11 in (2014) |
| May 7 | 70.0°F (2013) | 25.0°F (2019) | 0.35 in (2023) |
| May 8 | 82.0°F (2018) | 23.0°F (2019) | 0.69 in (2024) |
| May 9 | 80.1°F (2025) | 28.9°F (2020) | 0.99 in (2019) |
| May 10 | 70.0°F (2017) | 30.9°F (2013) | 0.34 in (2018) |
| May 11 | 84.9°F (2025) | 26.1°F (2020) | 0.79 in (2015) |
| May 12 | 84.9°F (2025) | 26.1°F (2020) | 0.68 in (2015) |
| May 13 | 84.0°F (2025) | 26.1°F (2013) | 1.01 in (2022) |
| May 14 | 79.0°F (2025) | 30.0°F (2013) | 0.18 in (2015) |
| May 15 | 82.0°F (2012) | 32.0°F (2014) | 0.33 in (2015) |
| May 16 | 78.1°F (2013) | 34.0°F (2014) | 0.10 in (2017) |
| May 17 | 86.0°F (2018) | 34.0°F (2014) | 1.43 in (2017) |
| May 18 | 80.1°F (2021) | 32.0°F (2025) | 0.68 in (2017) |
| May 19 | 87.1°F (2012) | 30.9°F (2015) | 0.50 in (2019) |
| May 20 | 81.0°F (2012) | 30.9°F (2015) | 0.65 in (2019) |
| May 21 | 75.0°F (2014) | 30.0°F (2018) | 0.77 in (2012) |
| May 22 | 75.9°F (2021) | 34.0°F (2022) | 1.37 in (2024) |
| May 23 | 79.0°F (2021) | 34.0°F (2025) | 0.80 in (2019) |
| May 24 | 82.0°F (2023) | 33.1°F (2013) | 1.83 in (2012) |
| May 25 | 82.9°F (2014) | 32.0°F (2013) | 1.06 in (2012) |
| May 26 | 86.0°F (2018) | 36.0°F (2023) | 0.40 in (2022) |
| May 27 | 89.1°F (2018) | 37.9°F (2013) | 0.18 in (2012) |
| May 28 | 84.0°F (2018) | 28.9°F (2021) | 0.92 in (2012) |
| May 29 | 79.0°F (2018) | 28.9°F (2021) | 0.77 in (2012) |
| May 30 | 82.9°F (2014) | 30.0°F (2021) | 0.48 in (2013) |
| May 31 | 77.0°F (2023) | 36.0°F (2015) | 0.47 in (2022) |