May weather in Salem, SD
The average temperature in Salem in May is 57.1°F (44.5°F–69.7°F). Average precipitation: 3.80 inches.
May is a spring month in Salem, and is warmer than the annual average of 44.4°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 14h 32m. For travel, May is a comfortable month to visit.
Avg High
69.7°F
Avg Low
44.5°F
Precipitation
3.80 in
Daylight
14h 32m
May records in Salem
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (2021) | 27.0°F (2023) | 2.05 in (2012) |
| May 2 | 82.9°F (2020) | 25.0°F (2011) | 0.13 in (2024) |
| May 3 | 82.0°F (2012) | 19.0°F (2013) | 0.11 in (2017) |
| May 4 | 75.0°F (2020) | 28.9°F (2021) | 1.20 in (2012) |
| May 5 | 81.0°F (2016) | 28.9°F (2021) | 2.05 in (2012) |
| May 6 | 89.1°F (2016) | 27.0°F (2021) | 0.20 in (2008) |
| May 7 | 84.0°F (2017) | 28.0°F (2021) | 1.41 in (2024) |
| May 8 | 82.9°F (2017) | 30.0°F (2020) | 1.01 in (2013) |
| May 9 | 81.0°F (2011) | 30.0°F (2010) | 1.05 in (2019) |
| May 10 | 88.0°F (2025) | 28.0°F (2020) | 1.55 in (2015) |
| May 11 | 88.0°F (2025) | 28.0°F (2008) | 1.06 in (2018) |
| May 12 | 90.0°F (2025) | 30.0°F (2013) | 2.27 in (2022) |
| May 13 | 91.0°F (2022) | 33.1°F (2014) | 0.45 in (2023) |
| May 14 | 95.0°F (2013) | 28.0°F (2016) | 0.33 in (2023) |
| May 15 | 88.0°F (2025) | 27.0°F (2014) | 0.55 in (2025) |
| May 16 | 81.0°F (2013) | 26.1°F (2014) | 0.34 in (2015) |
| May 17 | 93.9°F (2012) | 32.0°F (2014) | 1.18 in (2017) |
| May 18 | 93.0°F (2012) | 34.0°F (2015) | 0.45 in (2019) |
| May 19 | 96.1°F (2009) | 35.1°F (2015) | 0.34 in (2013) |
| May 20 | 91.0°F (2009) | 32.0°F (2019) | 1.98 in (2012) |
| May 21 | 84.0°F (2021) | 30.9°F (2017) | 0.52 in (2024) |
| May 22 | 89.1°F (2010) | 30.9°F (2022) | 1.71 in (2024) |
| May 23 | 87.1°F (2021) | 37.0°F (2025) | 1.03 in (2016) |
| May 24 | 90.0°F (2010) | 37.9°F (2017) | 0.68 in (2020) |
| May 25 | 89.1°F (2018) | 43.0°F (2022) | 1.28 in (2009) |
| May 26 | 91.9°F (2018) | 37.9°F (2022) | 3.43 in (2013) |
| May 27 | 93.9°F (2018) | 39.9°F (2008) | 0.96 in (2019) |
| May 28 | 99.0°F (2018) | 37.9°F (2009) | 0.70 in (2016) |
| May 29 | 93.9°F (2018) | 39.0°F (2021) | 0.90 in (2013) |
| May 30 | 91.0°F (2014) | 37.9°F (2012) | 1.41 in (2008) |
| May 31 | 89.1°F (2023) | 39.0°F (2015) | 0.98 in (2014) |