August weather in Marshalltown, IA
The average temperature in Marshalltown in August is °F (°F–°F). Average precipitation: 4.40 inches.
August is a summer month in Marshalltown, and is cooler than the annual average of 0°F. Daylight averages about 13h 42m.
Avg High
°F
Avg Low
°F
Precipitation
4.40 in
Daylight
13h 42m
August records in Marshalltown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 91.9°F (1991) | 57.9°F (1992) | 1.92 in (1993) |
| August 2 | 96.1°F (1991) | 61.0°F (1992) | 0.11 in (2022) |
| August 3 | 84.9°F (1994) | 54.0°F (1992) | 0.05 in (1990) |
| August 4 | 81.0°F (1994) | 52.0°F (1994) | 0.61 in (1954) |
| August 5 | 79.0°F (1992) | 51.1°F (1994) | 1.40 in (2016) |
| August 6 | 84.0°F (1992) | 55.9°F (1994) | 1.19 in (2018) |
| August 7 | 84.9°F (1991) | 55.9°F (1993) | 1.07 in (2023) |
| August 8 | 91.0°F (1992) | 57.0°F (1994) | 2.20 in (1991) |
| August 9 | 93.9°F (1992) | 57.0°F (1994) | 1.78 in (2015) |
| August 10 | 90.0°F (1992) | 59.0°F (1991) | 2.03 in (2025) |
| August 11 | 89.1°F (1993) | 59.0°F (1991) | 1.53 in (2020) |
| August 12 | 87.1°F (1991) | 53.1°F (1992) | 3.03 in (2016) |
| August 13 | 90.0°F (1993) | 52.0°F (1992) | 1.11 in (1994) |
| August 14 | 90.0°F (1993) | 54.0°F (1992) | 0.53 in (1989) |
| August 15 | 90.0°F (1991) | 52.0°F (1994) | 0.86 in (2017) |
| August 16 | 90.0°F (1993) | 53.1°F (1992) | 3.76 in (1993) |
| August 17 | 89.1°F (1993) | 53.1°F (1992) | 0.91 in (2017) |
| August 18 | 90.0°F (1994) | 55.9°F (1991) | 1.19 in (1993) |
| August 19 | 90.0°F (1994) | 53.1°F (1991) | 1.66 in (2015) |
| August 20 | 81.0°F (1992) | 53.1°F (1991) | 1.82 in (1969) |
| August 21 | 89.1°F (1991) | 55.9°F (1994) | 1.04 in (2021) |
| August 22 | 87.1°F (1991) | 54.0°F (1994) | 1.98 in (1988) |
| August 23 | 91.9°F (1994) | 62.1°F (1994) | 2.55 in (2014) |
| August 24 | 91.9°F (1993) | 66.9°F (1991) | 0.80 in (2014) |
| August 25 | 93.0°F (1991) | 60.1°F (1992) | 1.20 in (1990) |
| August 26 | 93.9°F (1991) | 57.9°F (1992) | 3.62 in (1954) |
| August 27 | 93.9°F (1991) | 51.1°F (1992) | 1.57 in (1989) |
| August 28 | 93.0°F (1991) | 50.0°F (1992) | 2.35 in (2022) |
| August 29 | 87.1°F (1991) | 52.0°F (1994) | 1.47 in (2015) |
| August 30 | 86.0°F (1991) | 52.0°F (1992) | 1.51 in (1993) |
| August 31 | 84.0°F (1991) | 52.0°F (1992) | 0.68 in (1994) |