United States · 1991–2020 normal
Herndon in
April.
Typical April weather in Herndon: 19.4°C by day, 6.1°C at night, 88 mm of rain over 8.4 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high19.4°C
Typical low6.1°C
Rain88 mm
Wet days8.4
Comfort score 57 this month (September leads the year at 78). Daylight is calculated as 13 h 10 from latitude 38.97°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4763793
- NOAA station
- USW00093738 · WASHINGTON DULLES INTL AP
- Station distance
- 6.6 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.