July weather in Marthasville, MO
The average temperature in Marthasville in July is 77.6°F (67.0°F–88.3°F). Average precipitation: 4.19 inches.
July is a summer month in Marthasville, and is warmer than the annual average of 54.8°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 14h 27m. For travel, July is hot.
Avg High
88.3°F
Avg Low
67.0°F
Precipitation
4.19 in
Daylight
14h 27m
July records in Marthasville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 102.0°F (2012) | 57.0°F (2010) | 1.17 in (1999) |
| July 2 | 98.1°F (2012) | 55.9°F (2010) | 2.53 in (1996) |
| July 3 | 99.0°F (2012) | 57.0°F (2010) | 2.82 in (2024) |
| July 4 | 99.0°F (2012) | 55.0°F (2014) | 2.88 in (2024) |
| July 5 | 102.9°F (2012) | 55.9°F (2014) | 2.05 in (2009) |
| July 6 | 104.0°F (2012) | 59.0°F (2014) | 1.73 in (2017) |
| July 7 | 102.9°F (2012) | 62.1°F (2018) | 0.78 in (2016) |
| July 8 | 105.1°F (2012) | 57.0°F (2018) | 1.37 in (2011) |
| July 9 | 98.1°F (2012) | 59.0°F (2015) | 1.75 in (2024) |
| July 10 | 93.0°F (2013) | 57.0°F (2014) | 1.16 in (2015) |
| July 11 | 96.1°F (2011) | 60.1°F (2014) | 0.65 in (2021) |
| July 12 | 98.1°F (2022) | 59.0°F (2013) | 1.78 in (1949) |
| July 13 | 97.0°F (2011) | 57.9°F (2013) | 1.97 in (2023) |
| July 14 | 95.0°F (2015) | 60.1°F (2013) | 3.55 in (2017) |
| July 15 | 95.0°F (2010) | 55.9°F (2014) | 0.38 in (1996) |
| July 16 | 96.1°F (2024) | 53.1°F (2014) | 0.85 in (2025) |
| July 17 | 98.1°F (2022) | 53.1°F (2014) | 2.93 in (2024) |
| July 18 | 100.9°F (2012) | 57.0°F (2014) | 2.21 in (2019) |
| July 19 | 102.9°F (2012) | 55.0°F (2014) | 0.97 in (2001) |
| July 20 | 100.9°F (2012) | 57.0°F (2024) | 1.12 in (2010) |
| July 21 | 98.1°F (2022) | 60.1°F (2024) | 2.75 in (2001) |
| July 22 | 98.1°F (2011) | 57.0°F (2023) | 2.69 in (2019) |
| July 23 | 102.9°F (2022) | 61.0°F (2023) | 0.29 in (2019) |
| July 24 | 102.9°F (2012) | 57.9°F (2014) | 0.08 in (2001) |
| July 25 | 104.0°F (2012) | 57.0°F (2013) | 1.76 in (2004) |
| July 26 | 104.0°F (2012) | 60.1°F (2013) | 0.67 in (2008) |
| July 27 | 97.0°F (2014) | 59.0°F (2013) | 1.10 in (2022) |
| July 28 | 98.1°F (2011) | 51.1°F (2013) | 2.42 in (2008) |
| July 29 | 99.0°F (2011) | 52.0°F (2013) | 1.64 in (2000) |
| July 30 | 95.0°F (2011) | 55.9°F (2014) | 2.07 in (1998) |
| July 31 | 93.0°F (2024) | 57.0°F (2014) | 1.20 in (1998) |