May weather in Hartford, SD
The average temperature in Hartford in May is 59.2°F (48.5°F–69.9°F). Average precipitation: 3.74 inches.
May is a spring month in Hartford, and is warmer than the annual average of 46.6°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Daylight averages about 14h 31m. For travel, May is a comfortable month to visit.
Avg High
69.9°F
Avg Low
48.5°F
Precipitation
3.74 in
Daylight
14h 31m
May records in Hartford
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 93.0°F (2021) | 30.9°F (2011) | 0.62 in (2013) |
| May 2 | 82.0°F (2012) | 27.0°F (2011) | 0.38 in (2024) |
| May 3 | 81.0°F (2012) | 28.9°F (2011) | 0.08 in (2017) |
| May 4 | 79.0°F (2025) | 33.1°F (2021) | 0.50 in (2020) |
| May 5 | 84.0°F (2018) | 33.1°F (2021) | 0.18 in (2011) |
| May 6 | 88.0°F (2016) | 33.1°F (2021) | 0.86 in (2024) |
| May 7 | 84.0°F (2017) | 37.0°F (2021) | 0.16 in (2022) |
| May 8 | 82.9°F (2017) | 34.0°F (2019) | 1.12 in (2022) |
| May 9 | 89.1°F (2025) | 33.1°F (2015) | 0.86 in (2013) |
| May 10 | 89.1°F (2025) | 33.1°F (2020) | 1.12 in (2015) |
| May 11 | 91.0°F (2025) | 30.9°F (2021) | 0.73 in (2018) |
| May 12 | 93.9°F (2022) | 34.0°F (2015) | 0.39 in (2023) |
| May 13 | 89.1°F (2025) | 37.0°F (2016) | 0.19 in (2019) |
| May 14 | 89.1°F (2025) | 32.0°F (2016) | 0.74 in (2023) |
| May 15 | 82.9°F (2019) | 30.0°F (2014) | 0.45 in (2017) |
| May 16 | 86.0°F (2018) | 26.1°F (2014) | 0.95 in (2015) |
| May 17 | 93.0°F (2012) | 37.0°F (2014) | 1.03 in (2017) |
| May 18 | 93.0°F (2012) | 35.1°F (2015) | 0.33 in (2019) |
| May 19 | 88.0°F (2022) | 35.1°F (2015) | 0.68 in (2024) |
| May 20 | 79.0°F (2014) | 35.1°F (2019) | 0.70 in (2017) |
| May 21 | 84.0°F (2021) | 36.0°F (2017) | 1.10 in (2024) |
| May 22 | 86.0°F (2012) | 35.1°F (2022) | 0.74 in (2011) |
| May 23 | 89.1°F (2018) | 43.0°F (2022) | 0.61 in (2016) |
| May 24 | 90.0°F (2018) | 43.0°F (2017) | 0.75 in (2020) |
| May 25 | 91.0°F (2018) | 46.9°F (2012) | 0.31 in (2016) |
| May 26 | 93.9°F (2018) | 42.1°F (2011) | 2.56 in (2013) |
| May 27 | 100.9°F (2018) | 42.1°F (2021) | 1.29 in (2013) |
| May 28 | 93.9°F (2022) | 42.1°F (2021) | 1.38 in (2016) |
| May 29 | 89.1°F (2023) | 42.1°F (2021) | 1.39 in (2019) |
| May 30 | 91.0°F (2023) | 42.1°F (2012) | 1.67 in (2022) |
| May 31 | 91.9°F (2023) | 42.1°F (2015) | 1.22 in (2014) |