August weather in Casselton, ND
The average temperature in Casselton in August is 67.8°F (55.8°F–79.9°F). Average precipitation: 2.62 inches.
August is a summer month in Casselton, and is warmer than the annual average of 41.1°F. Daily temperatures swing about 24.1°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 14h 2m. For travel, August is one of the best months of the year to visit.
Avg High
79.9°F
Avg Low
55.8°F
Precipitation
2.62 in
Daylight
14h 2m
August records in Casselton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1987) | 48.9°F (1995) | 1.04 in (1987) |
| August 2 | 98.1°F (1989) | 42.1°F (2018) | 0.74 in (1990) |
| August 3 | 97.0°F (1989) | 44.1°F (2018) | 0.65 in (2017) |
| August 4 | 100.0°F (1989) | 46.9°F (1986) | 0.94 in (2025) |
| August 5 | 93.9°F (1989) | 42.1°F (1994) | 0.80 in (1996) |
| August 6 | 96.1°F (2001) | 43.0°F (1989) | 3.30 in (2025) |
| August 7 | 96.1°F (1984) | 48.9°F (1988) | 2.80 in (1994) |
| August 8 | 95.0°F (2001) | 46.9°F (2022) | 1.13 in (2012) |
| August 9 | 95.0°F (1984) | 46.0°F (1996) | 1.46 in (2008) |
| August 10 | 91.9°F (2010) | 46.0°F (2024) | 0.96 in (2020) |
| August 11 | 99.0°F (1988) | 43.0°F (1990) | 0.81 in (2008) |
| August 12 | 98.1°F (1988) | 41.0°F (1990) | 1.60 in (1999) |
| August 13 | 102.0°F (1984) | 41.0°F (1997) | 1.23 in (2017) |
| August 14 | 102.9°F (1984) | 45.0°F (1994) | 1.07 in (1986) |
| August 15 | 93.0°F (1991) | 45.0°F (1985) | 2.25 in (2024) |
| August 16 | 98.1°F (1988) | 43.0°F (2012) | 0.96 in (2015) |
| August 17 | 105.1°F (1988) | 46.0°F (1997) | 1.05 in (2014) |
| August 18 | 95.0°F (2003) | 39.9°F (2002) | 0.80 in (1989) |
| August 19 | 96.1°F (2003) | 37.9°F (2004) | 0.68 in (2015) |
| August 20 | 91.9°F (2021) | 37.0°F (2004) | 0.26 in (2009) |
| August 21 | 95.0°F (2013) | 37.9°F (2004) | 0.96 in (2021) |
| August 22 | 89.1°F (1991) | 48.0°F (1987) | 1.75 in (1998) |
| August 23 | 91.0°F (1989) | 39.9°F (1984) | 0.88 in (2014) |
| August 24 | 90.0°F (2001) | 41.0°F (1987) | 2.27 in (1992) |
| August 25 | 95.0°F (1996) | 44.1°F (1984) | 1.02 in (1990) |
| August 26 | 97.0°F (1993) | 39.9°F (1992) | 1.86 in (2018) |
| August 27 | 97.0°F (1984) | 42.1°F (1992) | 0.73 in (2018) |
| August 28 | 102.9°F (1984) | 37.0°F (1986) | 0.73 in (1989) |
| August 29 | 102.9°F (1984) | 41.0°F (1988) | 0.75 in (2002) |
| August 30 | 98.1°F (1991) | 39.9°F (1987) | 0.23 in (1999) |
| August 31 | 91.9°F (1990) | 36.0°F (1987) | 2.08 in (1989) |