Prince William County climate

Prince William County Weather in March

NOAA 1991-2020 normals for Manassas, 3.7 km from Prince William County

Average highs run from 49°F on March 1 to 60°F on March 31, and lows from 28°F to 37°F.

March day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Prince William County, in °F, with the record for each date.-20020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
54°F
Average low
32°F
Snowfall
3.9 in
Record high
89°FMar 12, 1990
Record low
-1°FMar 15, 1993
Chance of a freeze
100%
Daylight
11 h 21 min to 12 h 37 min
Cloud cover
62%
Humidity
79%
Dew point
36°F
Wind
6.7 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Mar 149°F28°F77°F 197211°F 19809%
Mar 249°F29°F77°F 197212°F 19678%
Mar 349°F29°F74°F 19671°F 20148%
Mar 449°F29°F79°F 1974-1°F 20148%
Mar 550°F29°F79°F 19767°F 19788%
Mar 650°F29°F78°F 20226°F 20158%
Mar 750°F30°F77°F 20222°F 20157%
Mar 851°F30°F84°F 200011°F 19867%
Mar 951°F30°F82°F 201614°F 19967%
Mar 1051°F30°F85°F 20267°F 19967%
Mar 1152°F31°F86°F 202613°F 19967%
Mar 1252°F31°F89°F 199018°F 19696%
Mar 1352°F31°F87°F 199016°F 19986%
Mar 1453°F32°F88°F 199015°F 19686%
Mar 1553°F32°F84°F 2012-1°F 19936%
Mar 1654°F32°F81°F 199016°F 19695%
Mar 1754°F33°F77°F 196316°F 19705%
Mar 1854°F33°F80°F 198913°F 19765%
Mar 1955°F33°F76°F 201210°F 19675%
Mar 2055°F33°F80°F 202018°F 19815%
Mar 2156°F34°F78°F 201014°F 19654%
Mar 2256°F34°F86°F 202612°F 19884%
Mar 2357°F35°F83°F 199417°F 19694%
Mar 2457°F35°F79°F 198819°F 20144%
Mar 2557°F35°F78°F 201717°F 19714%
Mar 2658°F36°F81°F 202117°F 19833%
Mar 2758°F36°F85°F 199815°F 20143%
Mar 2859°F36°F86°F 198918°F 20013%
Mar 2959°F37°F86°F 199820°F 19823%
Mar 3060°F37°F89°F 199822°F 19703%
Mar 3160°F37°F85°F 199817°F 19642%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Prince William County, in percent, and of at least 0.1 inch of snowfall.02468101102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

March 1
sunrise 6:42 AM, sunset 6:03 PM
March 31
sunrise 6:56 AM, sunset 7:33 PM

Every day of March: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00445204 (Manassas), public domain. Records: NOAA GHCN-Daily, station USW00093738, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.