Portsmouth Weather in March
Average highs run from 54°F on March 1 to 64°F on March 31, and lows from 36°F to 44°F. Normal precipitation for the month is 4.05 in over about 10 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
- 58°F
- Average low
- 40°F
- Precipitation
- 4.05 in
- Snowfall
- 0.4 in
- Record high
- 90°FMar 12, 1990
- Record low
- 19°FMar 9, 1996
- Chance of a freeze
- 94%
- Daylight
- 11 h 24 min to 12 h 35 min
- Cloud cover
- 61%
- Humidity
- 80%
- Dew point
- 41°F
- Wind
- 12.1 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Mar 1 | 54°F | 36°F | 82°F 2017 | 20°F 1980 | 33% | 4% |
| Mar 2 | 55°F | 37°F | 82°F 1972 | 21°F 1980 | 33% | 3% |
| Mar 3 | 55°F | 37°F | 77°F 1974 | 20°F 2009 | 33% | 3% |
| Mar 4 | 55°F | 37°F | 83°F 2004 | 24°F 2014 | 33% | 3% |
| Mar 5 | 55°F | 37°F | 83°F 1976 | 22°F 1960 | 33% | 3% |
| Mar 6 | 55°F | 37°F | 83°F 1967 | 22°F 1960 | 33% | 3% |
| Mar 7 | 56°F | 38°F | 83°F 1974 | 22°F 2015 | 33% | 3% |
| Mar 8 | 56°F | 38°F | 82°F 2009 | 20°F 1986 | 33% | 3% |
| Mar 9 | 56°F | 38°F | 81°F 2009 | 19°F 1996 | 33% | 3% |
| Mar 10 | 56°F | 38°F | 82°F 2026 | 24°F 1996 | 33% | 2% |
| Mar 11 | 57°F | 39°F | 87°F 2026 | 23°F 1960 | 33% | 2% |
| Mar 12 | 57°F | 39°F | 90°F 1990 | 25°F 1998 | 33% | 2% |
| Mar 13 | 57°F | 39°F | 86°F 1990 | 25°F 1960 | 33% | 2% |
| Mar 14 | 57°F | 39°F | 88°F 1990 | 26°F 1960 | 33% | 2% |
| Mar 15 | 58°F | 39°F | 87°F 2012 | 25°F 1993 | 33% | 2% |
| Mar 16 | 58°F | 40°F | 84°F 1990 | 29°F 1949 | 33% | 2% |
| Mar 17 | 58°F | 40°F | 89°F 1945 | 28°F 2018 | 33% | 2% |
| Mar 18 | 59°F | 40°F | 84°F 2011 | 28°F 1976 | 33% | 2% |
| Mar 19 | 59°F | 40°F | 87°F 1945 | 28°F 1959 | 33% | 1% |
| Mar 20 | 59°F | 41°F | 86°F 2020 | 30°F 1981 | 33% | 1% |
| Mar 21 | 60°F | 41°F | 87°F 1948 | 29°F 1965 | 33% | 1% |
| Mar 22 | 60°F | 41°F | 87°F 1948 | 28°F 1986 | 33% | 1% |
| Mar 23 | 60°F | 41°F | 85°F 2012 | 28°F 1986 | 33% | 1% |
| Mar 24 | 61°F | 42°F | 84°F 1975 | 32°F 1971 | 33% | 1% |
| Mar 25 | 61°F | 42°F | 84°F 1954 | 28°F 1974 | 33% | 1% |
| Mar 26 | 61°F | 42°F | 83°F 2021 | 30°F 1960 | 33% | 1% |
| Mar 27 | 62°F | 43°F | 86°F 2007 | 25°F 1955 | 34% | 1% |
| Mar 28 | 62°F | 43°F | 85°F 1945 | 30°F 1982 | 34% | 1% |
| Mar 29 | 63°F | 43°F | 88°F 1985 | 28°F 1982 | 34% | 1% |
| Mar 30 | 63°F | 44°F | 86°F 1998 | 29°F 1964 | 34% | 1% |
| Mar 31 | 64°F | 44°F | 84°F 2025 | 30°F 1964 | 34% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- March 1
- sunrise 6:36 AM, sunset 6:00 PM
- March 31
- sunrise 6:52 AM, sunset 7:27 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00446147 (Norfolk S), public domain. Records: NOAA GHCN-Daily, station USW00013750, 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.