May weather in Heron Lake, MN
The average temperature in Heron Lake in May is 56.9°F (45.8°F–67.9°F). Average precipitation: 4.48 inches. Average snowfall is 0.3 inches.
May is a spring month in Heron Lake, and is warmer than the annual average of 44°F. Daily temperatures swing about 22.1°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 14h 32m. For travel, May is a comfortable month to visit.
Avg High
67.9°F
Avg Low
45.8°F
Precipitation
4.48 in
Snow
0.3 in
May records in Heron Lake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (2007) | 27.0°F (1997) | 1.34 in (2017) |
| May 2 | 90.0°F (2021) | 25.0°F (2002) | 1.53 in (2012) |
| May 3 | 80.1°F (2015) | 24.1°F (2005) | 1.36 in (2008) |
| May 4 | 84.0°F (2015) | 26.1°F (2005) | 0.50 in (2019) |
| May 5 | 86.0°F (2000) | 30.9°F (2013) | 1.48 in (2012) |
| May 6 | 89.1°F (2000) | 28.9°F (2021) | 2.96 in (2007) |
| May 7 | 87.1°F (2016) | 32.0°F (2021) | 1.53 in (2005) |
| May 8 | 84.9°F (2000) | 30.9°F (2020) | 1.08 in (2015) |
| May 9 | 86.0°F (2017) | 30.0°F (2010) | 2.14 in (2018) |
| May 10 | 88.0°F (2004) | 32.0°F (2010) | 1.61 in (2016) |
| May 11 | 89.1°F (2011) | 30.9°F (2021) | 1.25 in (2018) |
| May 12 | 91.0°F (2022) | 30.0°F (2013) | 1.35 in (2022) |
| May 13 | 91.0°F (2022) | 25.0°F (1997) | 1.15 in (2023) |
| May 14 | 89.1°F (2007) | 30.0°F (2004) | 1.71 in (2023) |
| May 15 | 97.0°F (2013) | 27.0°F (1997) | 0.86 in (1951) |
| May 16 | 93.9°F (2001) | 33.1°F (1997) | 1.63 in (2000) |
| May 17 | 84.0°F (2013) | 35.1°F (2002) | 1.55 in (2020) |
| May 18 | 89.1°F (2012) | 34.0°F (2002) | 2.32 in (2000) |
| May 19 | 95.0°F (1998) | 32.0°F (2002) | 0.45 in (1951) |
| May 20 | 93.0°F (2009) | 32.0°F (2019) | 1.19 in (2003) |
| May 21 | 90.0°F (2009) | 35.1°F (2022) | 2.07 in (2001) |
| May 22 | 84.9°F (2007) | 34.0°F (2022) | 1.09 in (2024) |
| May 23 | 87.1°F (2010) | 37.9°F (2022) | 1.20 in (2018) |
| May 24 | 89.1°F (2006) | 33.1°F (2002) | 2.76 in (2012) |
| May 25 | 93.0°F (2010) | 36.0°F (2002) | 0.41 in (2013) |
| May 26 | 89.1°F (2018) | 41.0°F (2004) | 1.01 in (2013) |
| May 27 | 91.9°F (2018) | 37.9°F (2007) | 1.25 in (2021) |
| May 28 | 97.0°F (2018) | 39.0°F (2021) | 1.61 in (2012) |
| May 29 | 93.9°F (2006) | 37.0°F (2021) | 1.24 in (2008) |
| May 30 | 90.0°F (2010) | 41.0°F (2012) | 1.85 in (2022) |
| May 31 | 90.0°F (2011) | 41.0°F (2017) | 0.60 in (1951) |