August weather in Rockville, MD
The average temperature in Rockville in August is 75.9°F (67.0°F–84.9°F). Average precipitation: 3.05 inches.
August is a summer month in Rockville, and is warmer than the annual average of 56.2°F. Daily temperatures swing about 17.9°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 13h 32m. For travel, August is a comfortable month to visit.
Avg High
84.9°F
Avg Low
67.0°F
Precipitation
3.05 in
Daylight
13h 32m
August records in Rockville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1954) | 48.9°F (1914) | 4.50 in (1978) |
| August 2 | 100.0°F (1955) | 51.1°F (1976) | 1.84 in (1971) |
| August 3 | 100.0°F (1955) | 46.9°F (1920) | 1.26 in (2002) |
| August 4 | 99.0°F (1987) | 50.0°F (1920) | 3.15 in (1915) |
| August 5 | 96.1°F (1918) | 51.1°F (1951) | 2.00 in (1990) |
| August 6 | 104.0°F (1918) | 48.9°F (1951) | 2.85 in (1995) |
| August 7 | 104.0°F (1918) | 51.1°F (1994) | 0.82 in (1961) |
| August 8 | 102.0°F (1918) | 46.9°F (1975) | 2.00 in (1959) |
| August 9 | 98.1°F (1987) | 50.0°F (1975) | 2.75 in (1953) |
| August 10 | 93.9°F (1914) | 50.0°F (1919) | 1.25 in (1990) |
| August 11 | 95.0°F (1949) | 46.0°F (1972) | 2.60 in (2001) |
| August 12 | 96.1°F (1918) | 48.0°F (1968) | 2.03 in (1948) |
| August 13 | 98.1°F (2002) | 44.1°F (1979) | 3.70 in (1955) |
| August 14 | 97.0°F (2002) | 46.9°F (1916) | 1.44 in (1963) |
| August 15 | 98.1°F (1988) | 46.0°F (1964) | 1.34 in (1976) |
| August 16 | 100.0°F (1997) | 42.1°F (1979) | 0.61 in (1909) |
| August 17 | 98.1°F (1988) | 39.0°F (1979) | 2.10 in (1909) |
| August 18 | 97.0°F (1914) | 43.0°F (1981) | 2.00 in (1955) |
| August 19 | 99.0°F (1914) | 48.0°F (1915) | 1.09 in (1965) |
| August 20 | 99.0°F (1914) | 46.9°F (1918) | 2.34 in (1974) |
| August 21 | 95.0°F (1914) | 46.0°F (1918) | 2.02 in (1963) |
| August 22 | 96.1°F (1916) | 46.0°F (1979) | 0.70 in (1919) |
| August 23 | 97.0°F (1968) | 50.0°F (1978) | 1.60 in (1955) |
| August 24 | 96.1°F (1968) | 46.0°F (1971) | 0.98 in (1967) |
| August 25 | 95.0°F (1968) | 46.0°F (1971) | 2.05 in (1967) |
| August 26 | 97.0°F (1959) | 43.0°F (1977) | 3.45 in (1908) |
| August 27 | 98.1°F (1987) | 48.0°F (1919) | 2.00 in (1971) |
| August 28 | 96.1°F (1953) | 48.9°F (1986) | 1.90 in (1979) |
| August 29 | 95.0°F (1953) | 39.9°F (1982) | 1.40 in (1914) |
| August 30 | 96.1°F (1982) | 39.9°F (1986) | 1.75 in (1915) |
| August 31 | 99.0°F (1953) | 44.1°F (1986) | 1.42 in (1911) |