Washington County climate

Washington County Weather in March

NOAA 1991-2020 normals for Forest Grove, 3.9 km from Washington County

Average highs run from 52°F on March 1 to 57°F on March 31, and lows from 34°F to 37°F. Normal precipitation for the month is 5.03 in over about 17 wet days.

March day by day

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

Normal daily high and low temperature at Washington County, in °F, with the record for each date.20406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
55°F
Average low
36°F
Precipitation
5.03 in
Record high
79°FMar 25, 2025
Record low
20°FMar 5, 2019
Chance of a freeze
99%
Daylight
11 h 10 min to 12 h 46 min
Cloud cover
76%
Humidity
89%
Dew point
40°F
Wind
5.1 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 152°F34°F63°F 202523°F 202355%0%
Mar 252°F34°F62°F 202624°F 201956%0%
Mar 352°F34°F62°F 200226°F 200156%0%
Mar 453°F35°F61°F 200222°F 201956%0%
Mar 553°F35°F65°F 200120°F 201956%0%
Mar 653°F35°F69°F 200125°F 202456%0%
Mar 753°F35°F69°F 200525°F 201256%0%
Mar 853°F35°F73°F 200427°F 201956%0%
Mar 954°F35°F70°F 200526°F 202056%0%
Mar 1054°F35°F74°F 200524°F 201955%0%
Mar 1154°F35°F76°F 200523°F 201955%0%
Mar 1254°F36°F70°F 201824°F 200955%0%
Mar 1354°F36°F68°F 200525°F 200955%0%
Mar 1454°F36°F66°F 200529°F 201055%0%
Mar 1555°F36°F70°F 202426°F 202155%0%
Mar 1655°F36°F75°F 202424°F 202155%0%
Mar 1755°F36°F75°F 202426°F 202055%0%
Mar 1855°F36°F77°F 202428°F 200255%0%
Mar 1955°F36°F73°F 201926°F 200655%0%
Mar 2055°F36°F75°F 201928°F 200155%0%
Mar 2156°F37°F70°F 200428°F 200755%0%
Mar 2256°F37°F71°F 200428°F 200155%0%
Mar 2356°F37°F68°F 200128°F 202155%0%
Mar 2456°F37°F69°F 202527°F 200355%0%
Mar 2556°F37°F79°F 202528°F 200855%0%
Mar 2656°F37°F77°F 202528°F 202655%0%
Mar 2756°F37°F69°F 201530°F 202655%0%
Mar 2856°F37°F68°F 200432°F 200755%0%
Mar 2957°F37°F77°F 200429°F 200055%0%
Mar 3057°F37°F76°F 201327°F 202155%0%
Mar 3157°F37°F75°F 201628°F 202155%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Washington County, in percent, and of at least 0.1 inch of snowfall.02040601102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

March 1
sunrise 6:50 AM, sunset 6:00 PM
March 31
sunrise 6:54 AM, sunset 7:40 PM

Every day of March: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00352997 (Forest Grove), public domain. Records: NOAA GHCN-Daily, station USW00094261, 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.