August weather in Dubuque, IA
The average temperature in Dubuque in August is 72.2°F (62.3°F–82.1°F). Average precipitation: 3.75 inches.
August is a summer month in Dubuque, and is warmer than the annual average of 48.4°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 44m. For travel, August is a comfortable month to visit.
Avg High
82.1°F
Avg Low
62.3°F
Precipitation
3.75 in
Daylight
13h 44m
August records in Dubuque
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 100.9°F (1988) | 54.0°F (1978) | 1.90 in (1957) |
| August 2 | 100.9°F (1988) | 53.1°F (1950) | 5.27 in (1972) |
| August 3 | 100.9°F (1988) | 50.0°F (1950) | 1.24 in (1959) |
| August 4 | 99.0°F (1988) | 50.0°F (1978) | 1.49 in (1953) |
| August 5 | 95.0°F (1947) | 51.1°F (1990) | 2.33 in (1968) |
| August 6 | 96.1°F (1984) | 43.0°F (1994) | 3.05 in (2018) |
| August 7 | 96.1°F (1984) | 50.0°F (1990) | 3.40 in (1970) |
| August 8 | 98.1°F (1941) | 55.0°F (1976) | 2.31 in (1991) |
| August 9 | 95.0°F (2005) | 53.1°F (2024) | 1.97 in (2010) |
| August 10 | 98.1°F (1983) | 52.0°F (2024) | 1.60 in (2009) |
| August 11 | 100.9°F (1941) | 48.9°F (1967) | 3.10 in (2025) |
| August 12 | 97.0°F (1995) | 48.0°F (1967) | 1.32 in (1997) |
| August 13 | 98.1°F (1995) | 51.1°F (1967) | 2.80 in (1943) |
| August 14 | 99.0°F (1988) | 48.9°F (1964) | 1.70 in (1980) |
| August 15 | 100.0°F (1988) | 50.0°F (1979) | 2.45 in (2023) |
| August 16 | 102.9°F (1988) | 50.0°F (1976) | 1.08 in (1977) |
| August 17 | 104.0°F (1988) | 50.0°F (1981) | 2.27 in (2000) |
| August 18 | 100.9°F (1988) | 51.1°F (1950) | 1.61 in (1946) |
| August 19 | 100.9°F (1983) | 50.0°F (1963) | 1.65 in (2005) |
| August 20 | 98.1°F (1983) | 45.0°F (1950) | 2.48 in (1952) |
| August 21 | 97.0°F (1947) | 46.9°F (1950) | 1.96 in (1964) |
| August 22 | 96.1°F (1947) | 46.9°F (1967) | 3.98 in (2002) |
| August 23 | 96.1°F (1947) | 50.0°F (1951) | 1.65 in (1988) |
| August 24 | 102.0°F (2023) | 50.0°F (1942) | 1.79 in (1962) |
| August 25 | 96.1°F (2023) | 46.9°F (1958) | 1.88 in (1990) |
| August 26 | 93.9°F (2003) | 51.1°F (1964) | 1.45 in (1992) |
| August 27 | 96.1°F (1990) | 50.0°F (1968) | 3.35 in (1965) |
| August 28 | 96.1°F (1984) | 46.9°F (1986) | 1.19 in (1963) |
| August 29 | 99.0°F (1984) | 46.0°F (1946) | 1.45 in (1960) |
| August 30 | 95.0°F (1945) | 48.9°F (1946) | 1.58 in (1965) |
| August 31 | 95.0°F (1995) | 45.0°F (1967) | 3.02 in (1956) |