Average change in
Temperature
Average change in high temperature day-to-day
Last Month:
6.8°
Last Year:
5.7°
Average change in low temperature day-to-day
Last Month:
9.1°
Last Year:
7.2°
Average change in
Precipitation
Chance of dry day after a precip day
Last Month:
44%
Last Year:
52%
Chance of precip day after a dry day
Last Month:
25%
Last Year:
22%
ForecastAdvisor Fact
On average, Weatherbit's low temperature forecasts for Herndon were off by 2.67 degrees last year.