August weather in Grantsburg, WI
The average temperature in Grantsburg in August is 68.1°F (55.8°F–80.4°F). Average precipitation: 4.45 inches.
August is a summer month in Grantsburg, and is warmer than the annual average of 43.1°F. Daily temperatures swing about 24.6°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 57m. For travel, August is a comfortable month to visit.
Avg High
80.4°F
Avg Low
55.8°F
Precipitation
4.45 in
Daylight
13h 57m
August records in Grantsburg
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.0°F (2006) | 45.0°F (1968) | 2.67 in (1953) |
| August 2 | 97.0°F (1964) | 45.0°F (1950) | 1.74 in (1967) |
| August 3 | 95.0°F (1964) | 43.0°F (1978) | 4.05 in (1956) |
| August 4 | 93.0°F (1959) | 39.9°F (1951) | 2.58 in (2002) |
| August 5 | 96.1°F (2001) | 37.0°F (1957) | 1.43 in (2021) |
| August 6 | 95.0°F (2001) | 41.0°F (1972) | 2.31 in (1995) |
| August 7 | 97.0°F (2001) | 45.0°F (1972) | 2.38 in (2015) |
| August 8 | 96.1°F (2001) | 44.1°F (1964) | 3.47 in (1995) |
| August 9 | 96.1°F (2005) | 42.1°F (1967) | 1.30 in (2004) |
| August 10 | 93.0°F (2010) | 37.0°F (1967) | 1.70 in (1985) |
| August 11 | 97.0°F (2007) | 37.0°F (1950) | 2.05 in (2014) |
| August 12 | 91.9°F (1965) | 37.9°F (1966) | 2.72 in (1963) |
| August 13 | 93.0°F (1961) | 41.0°F (1964) | 2.47 in (2010) |
| August 14 | 95.0°F (1970) | 34.0°F (1964) | 2.19 in (1989) |
| August 15 | 93.9°F (2009) | 36.0°F (1960) | 1.47 in (1993) |
| August 16 | 98.1°F (1950) | 37.9°F (1958) | 1.52 in (2009) |
| August 17 | 93.9°F (1988) | 37.9°F (1963) | 1.39 in (2025) |
| August 18 | 93.0°F (1955) | 36.0°F (1950) | 1.38 in (2019) |
| August 19 | 96.1°F (1955) | 37.9°F (1967) | 3.01 in (2015) |
| August 20 | 95.0°F (1976) | 33.1°F (1950) | 1.63 in (2009) |
| August 21 | 91.0°F (2013) | 35.1°F (2004) | 1.65 in (1966) |
| August 22 | 93.9°F (1976) | 35.1°F (1958) | 1.23 in (1954) |
| August 23 | 93.0°F (1976) | 43.0°F (1951) | 3.20 in (1978) |
| August 24 | 91.0°F (1968) | 37.9°F (1956) | 0.75 in (1964) |
| August 25 | 96.1°F (2003) | 36.0°F (1958) | 2.08 in (1955) |
| August 26 | 100.0°F (2013) | 37.0°F (1958) | 2.50 in (1981) |
| August 27 | 93.0°F (2013) | 37.0°F (1968) | 2.64 in (1960) |
| August 28 | 93.0°F (1969) | 35.1°F (1965) | 1.46 in (2018) |
| August 29 | 97.0°F (1969) | 35.1°F (1976) | 0.46 in (1965) |
| August 30 | 95.0°F (1969) | 37.0°F (2009) | 1.73 in (1951) |
| August 31 | 96.1°F (1961) | 32.0°F (1970) | 5.58 in (1973) |