May weather in Marthasville, MO
The average temperature in Marthasville in May is 65.0°F (54.2°F–75.8°F). Average precipitation: 5.30 inches.
May is a spring month in Marthasville, and is warmer than the annual average of 54.8°F. Daily temperatures swing about 21.6°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 6m. For travel, May is a wet month.
Avg High
75.8°F
Avg Low
54.2°F
Precipitation
5.30 in
Daylight
14h 6m
May records in Marthasville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 88.0°F (2013) | 36.0°F (2015) | 2.14 in (2019) |
| May 2 | 86.0°F (2018) | 37.0°F (2023) | 0.85 in (2007) |
| May 3 | 88.0°F (2012) | 35.1°F (2023) | 1.49 in (2007) |
| May 4 | 86.0°F (2020) | 34.0°F (2011) | 2.95 in (2017) |
| May 5 | 82.9°F (2012) | 37.9°F (2013) | 2.13 in (2022) |
| May 6 | 90.0°F (2012) | 39.9°F (2016) | 1.03 in (2022) |
| May 7 | 89.1°F (2012) | 39.9°F (2020) | 10.48 in (2000) |
| May 8 | 91.9°F (2023) | 41.0°F (2021) | 1.32 in (2008) |
| May 9 | 84.0°F (2014) | 34.0°F (2020) | 1.26 in (1950) |
| May 10 | 89.1°F (2022) | 37.9°F (2021) | 0.95 in (2015) |
| May 11 | 90.0°F (2022) | 35.1°F (2020) | 1.05 in (2006) |
| May 12 | 93.0°F (2022) | 37.0°F (2013) | 2.00 in (2016) |
| May 13 | 93.9°F (2022) | 35.1°F (2013) | 1.76 in (2002) |
| May 14 | 90.0°F (2018) | 37.9°F (2021) | 1.33 in (2004) |
| May 15 | 90.0°F (2018) | 37.9°F (2016) | 1.27 in (1996) |
| May 16 | 90.0°F (2025) | 37.0°F (2014) | 1.28 in (2010) |
| May 17 | 91.0°F (2019) | 36.0°F (2014) | 2.75 in (1995) |
| May 18 | 90.0°F (2019) | 39.0°F (2014) | 2.34 in (1995) |
| May 19 | 88.0°F (2017) | 42.1°F (2016) | 2.16 in (2001) |
| May 20 | 90.0°F (2013) | 45.0°F (2016) | 2.69 in (2017) |
| May 21 | 88.0°F (2012) | 45.0°F (2015) | 2.71 in (2013) |
| May 22 | 90.0°F (2024) | 43.0°F (2015) | 1.51 in (2022) |
| May 23 | 86.0°F (2010) | 44.1°F (2022) | 0.64 in (2019) |
| May 24 | 90.0°F (2010) | 46.9°F (2013) | 0.60 in (2011) |
| May 25 | 90.0°F (2019) | 46.0°F (2013) | 1.21 in (1995) |
| May 26 | 89.1°F (2012) | 48.0°F (2023) | 1.80 in (1997) |
| May 27 | 93.0°F (2012) | 45.0°F (2023) | 2.37 in (2000) |
| May 28 | 95.0°F (2018) | 45.0°F (2023) | 1.35 in (2021) |
| May 29 | 91.9°F (2018) | 46.9°F (2021) | 1.36 in (2009) |
| May 30 | 90.0°F (2011) | 41.0°F (2021) | 1.82 in (2015) |
| May 31 | 90.0°F (2011) | 46.9°F (2021) | 1.17 in (2001) |