May weather in Manhattan, MT
The average temperature in Manhattan in May is 50.2°F (36.2°F–64.2°F). Average precipitation: 2.68 inches.
May is a spring month in Manhattan, and is warmer than the annual average of 42.7°F. Daily temperatures swing about 28°F between overnight low and afternoon high. Daylight averages about 14h 44m. For travel, May is cool.
Avg High
64.2°F
Avg Low
36.2°F
Precipitation
2.68 in
Daylight
14h 44m
May records in Manhattan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 86.0°F (2021) | 19.0°F (2011) | 0.36 in (2020) |
| May 2 | 80.1°F (2023) | 18.0°F (2013) | 0.07 in (2017) |
| May 3 | 81.0°F (2023) | 19.0°F (2013) | 0.04 in (2022) |
| May 4 | 80.1°F (2016) | 21.9°F (2019) | 0.94 in (2022) |
| May 5 | 81.0°F (2016) | 21.0°F (2010) | 0.22 in (2025) |
| May 6 | 86.0°F (2017) | 18.0°F (2010) | 0.38 in (2025) |
| May 7 | 80.1°F (2017) | 23.0°F (2012) | 0.28 in (2009) |
| May 8 | 73.9°F (2013) | 23.0°F (2010) | 0.72 in (2021) |
| May 9 | 91.0°F (2014) | 23.0°F (2010) | 0.30 in (2011) |
| May 10 | 84.0°F (2012) | 23.0°F (2010) | 0.95 in (2016) |
| May 11 | 86.0°F (2025) | 27.0°F (2015) | 0.64 in (2018) |
| May 12 | 82.0°F (2017) | 24.1°F (2012) | 0.15 in (2014) |
| May 13 | 86.0°F (2013) | 25.0°F (2010) | 0.36 in (2015) |
| May 14 | 91.0°F (2013) | 25.0°F (2010) | 0.36 in (2025) |
| May 15 | 81.0°F (2012) | 27.0°F (2017) | 0.25 in (2024) |
| May 16 | 87.1°F (2012) | 25.0°F (2010) | 0.45 in (2015) |
| May 17 | 84.9°F (2012) | 28.9°F (2010) | 0.40 in (2022) |
| May 18 | 84.9°F (2009) | 30.9°F (2009) | 0.88 in (2017) |
| May 19 | 90.0°F (2009) | 28.9°F (2024) | 0.65 in (2014) |
| May 20 | 87.1°F (2009) | 30.0°F (2017) | 1.15 in (2013) |
| May 21 | 82.9°F (2023) | 30.0°F (2010) | 0.45 in (2021) |
| May 22 | 86.0°F (2023) | 26.1°F (2009) | 0.33 in (2016) |
| May 23 | 82.0°F (2014) | 27.0°F (2021) | 0.70 in (2024) |
| May 24 | 82.9°F (2014) | 28.9°F (2022) | 0.62 in (2024) |
| May 25 | 75.9°F (2014) | 28.9°F (2024) | 0.40 in (2011) |
| May 26 | 80.1°F (2014) | 33.1°F (2020) | 0.18 in (2012) |
| May 27 | 84.0°F (2025) | 32.0°F (2017) | 0.80 in (2014) |
| May 28 | 80.1°F (2009) | 33.1°F (2012) | 0.54 in (2016) |
| May 29 | 84.0°F (2009) | 33.1°F (2012) | 0.57 in (2018) |
| May 30 | 86.0°F (2025) | 33.1°F (2012) | 0.42 in (2024) |
| May 31 | 82.0°F (2009) | 33.1°F (2012) | 0.90 in (2022) |