April weather in Herndon, VA
The average temperature in Herndon in April is 55.0°F (43.2°F–66.8°F). Average precipitation: 3.47 inches.
April is a spring month in Herndon, and is cooler than the annual average of 55.7°F. Daily temperatures swing about 23.6°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 2m. For travel, April is a comfortable month to visit.
Avg High
66.8°F
Avg Low
43.2°F
Precipitation
3.47 in
Snow
0.1 in
April records in Herndon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 86.0°F (2026) | 17.1°F (1969) | 1.64 in (1973) |
| April 2 | 86.0°F (1967) | 21.0°F (1964) | 2.07 in (2005) |
| April 3 | 86.0°F (1981) | 23.0°F (1991) | 0.70 in (2008) |
| April 4 | 87.1°F (2026) | 21.9°F (1965) | 1.47 in (1987) |
| April 5 | 88.0°F (2023) | 21.9°F (1965) | 1.75 in (1960) |
| April 6 | 93.0°F (2010) | 24.1°F (1966) | 1.57 in (2017) |
| April 7 | 91.0°F (2010) | 21.0°F (1977) | 1.33 in (1988) |
| April 8 | 87.1°F (1991) | 24.1°F (1970) | 1.15 in (2000) |
| April 9 | 89.1°F (2001) | 23.0°F (1977) | 1.02 in (1998) |
| April 10 | 89.1°F (2013) | 19.0°F (1985) | 0.84 in (1983) |
| April 11 | 87.1°F (1977) | 25.0°F (1960) | 0.74 in (2009) |
| April 12 | 87.1°F (1977) | 23.0°F (1982) | 1.45 in (2004) |
| April 13 | 87.1°F (1977) | 24.1°F (1990) | 1.79 in (2020) |
| April 14 | 87.1°F (1960) | 19.9°F (1975) | 2.13 in (1970) |
| April 15 | 91.0°F (2026) | 28.0°F (1971) | 1.96 in (1983) |
| April 16 | 91.9°F (2026) | 28.0°F (1981) | 2.43 in (1993) |
| April 17 | 93.0°F (2002) | 27.0°F (1983) | 1.44 in (2000) |
| April 18 | 90.0°F (1976) | 29.1°F (2018) | 0.59 in (1978) |
| April 19 | 91.0°F (2002) | 27.0°F (1990) | 1.26 in (2019) |
| April 20 | 88.0°F (1976) | 28.0°F (1974) | 2.90 in (2008) |
| April 21 | 89.1°F (1985) | 28.9°F (1983) | 2.20 in (1992) |
| April 22 | 91.9°F (1985) | 27.0°F (1975) | 2.88 in (2006) |
| April 23 | 88.0°F (2001) | 30.0°F (1989) | 0.67 in (1963) |
| April 24 | 84.9°F (1990) | 30.0°F (1989) | 1.25 in (1983) |
| April 25 | 93.0°F (1960) | 28.9°F (1969) | 1.34 in (1973) |
| April 26 | 91.9°F (1990) | 30.9°F (1967) | 0.93 in (2004) |
| April 27 | 91.9°F (1990) | 30.9°F (1972) | 1.65 in (1973) |
| April 28 | 88.0°F (1981) | 32.0°F (1972) | 1.68 in (2002) |
| April 29 | 91.0°F (2024) | 32.0°F (1987) | 1.19 in (2014) |
| April 30 | 88.0°F (2024) | 28.9°F (1977) | 3.99 in (2014) |