Mill Plain Weather in March
Average highs run from 54°F on March 1 to 59°F on March 31, and lows from 38°F to 41°F. Normal precipitation for the month is 4.65 in over about 19 wet days.
March day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
March at a glance
- Average high
- 56°F
- Average low
- 40°F
- Precipitation
- 4.65 in
- Snowfall
- 0.1 in
- Record high
- 82°FMar 26, 2025
- Record low
- 19°FMar 3, 1989
- Chance of a freeze
- 72%
- Daylight
- 11 h 09 min to 12 h 45 min
- Cloud cover
- 76%
- Humidity
- 87%
- Dew point
- 39°F
- Wind
- 5.6 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Mar 1 | 54°F | 38°F | 67°F 1981 | 22°F 1960 | 60% | 2% |
| Mar 2 | 54°F | 38°F | 67°F 1986 | 25°F 1960 | 60% | 2% |
| Mar 3 | 54°F | 38°F | 67°F 1994 | 19°F 1989 | 60% | 2% |
| Mar 4 | 54°F | 38°F | 69°F 1987 | 26°F 1954 | 60% | 2% |
| Mar 5 | 55°F | 38°F | 66°F 1965 | 19°F 1955 | 60% | 2% |
| Mar 6 | 55°F | 38°F | 70°F 1965 | 28°F 1976 | 60% | 2% |
| Mar 7 | 55°F | 38°F | 69°F 1941 | 25°F 1974 | 60% | 2% |
| Mar 8 | 55°F | 39°F | 72°F 1953 | 26°F 1974 | 60% | 2% |
| Mar 9 | 55°F | 39°F | 70°F 2005 | 25°F 1943 | 60% | 1% |
| Mar 10 | 56°F | 39°F | 74°F 2005 | 22°F 1969 | 60% | 1% |
| Mar 11 | 56°F | 39°F | 75°F 2005 | 24°F 1956 | 61% | 1% |
| Mar 12 | 56°F | 39°F | 70°F 1994 | 24°F 1954 | 61% | 1% |
| Mar 13 | 56°F | 39°F | 71°F 1979 | 24°F 1944 | 61% | 1% |
| Mar 14 | 56°F | 39°F | 74°F 1947 | 28°F 1953 | 61% | 1% |
| Mar 15 | 56°F | 39°F | 77°F 1947 | 26°F 1955 | 61% | 1% |
| Mar 16 | 56°F | 40°F | 80°F 1947 | 27°F 1955 | 61% | 1% |
| Mar 17 | 57°F | 40°F | 76°F 1947 | 24°F 1955 | 61% | 1% |
| Mar 18 | 57°F | 40°F | 77°F 2024 | 28°F 1943 | 61% | 1% |
| Mar 19 | 57°F | 40°F | 73°F 1960 | 25°F 1965 | 61% | 1% |
| Mar 20 | 57°F | 40°F | 72°F 2019 | 28°F 1955 | 61% | 1% |
| Mar 21 | 57°F | 40°F | 77°F 1939 | 28°F 1952 | 61% | 1% |
| Mar 22 | 57°F | 40°F | 78°F 1939 | 29°F 1966 | 61% | 1% |
| Mar 23 | 57°F | 40°F | 73°F 1979 | 31°F 1951 | 61% | 1% |
| Mar 24 | 58°F | 41°F | 72°F 1960 | 29°F 1945 | 61% | 1% |
| Mar 25 | 58°F | 41°F | 80°F 2025 | 30°F 1970 | 61% | 1% |
| Mar 26 | 58°F | 41°F | 82°F 2025 | 31°F 1955 | 61% | 1% |
| Mar 27 | 58°F | 41°F | 77°F 1994 | 27°F 1975 | 61% | 1% |
| Mar 28 | 58°F | 41°F | 76°F 1994 | 28°F 1962 | 60% | 0% |
| Mar 29 | 58°F | 41°F | 75°F 1994 | 23°F 1954 | 60% | 0% |
| Mar 30 | 58°F | 41°F | 77°F 2013 | 24°F 1954 | 60% | 0% |
| Mar 31 | 59°F | 41°F | 77°F 2013 | 31°F 1970 | 60% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- March 1
- sunrise 6:48 AM, sunset 5:57 PM
- March 31
- sunrise 6:52 AM, sunset 7:37 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00356750 (Portland WFO), public domain. Records: NOAA GHCN-Daily, station USW00024229, 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.