Merrimack Weather in March
Average highs run from 41°F on March 1 to 51°F on March 31, and lows from 19°F to 28°F. Normal precipitation for the month is 4.31 in over about 9 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
- 45°F
- Average low
- 23°F
- Precipitation
- 4.31 in
- Snowfall
- 10.1 in
- Record high
- 89°FMar 31, 1998
- Record low
- -10°FMar 19, 1967
- Chance of a freeze
- 100%
- Daylight
- 11 h 13 min to 12 h 41 min
- Cloud cover
- 64%
- Humidity
- 84%
- Dew point
- 28°F
- Wind
- 6.5 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 | 41°F | 19°F | 67°F 2017 | 0°F 2015 | 30% | 14% |
| Mar 2 | 41°F | 19°F | 63°F 2004 | 0°F 1967 | 30% | 14% |
| Mar 3 | 41°F | 19°F | 64°F 2020 | 5°F 2026 | 30% | 14% |
| Mar 4 | 41°F | 20°F | 54°F 1953 | 0°F 2014 | 30% | 14% |
| Mar 5 | 42°F | 20°F | 58°F 1949 | 4°F 2009 | 30% | 14% |
| Mar 6 | 42°F | 20°F | 65°F 2022 | 1°F 2007 | 30% | 13% |
| Mar 7 | 42°F | 21°F | 62°F 2000 | -2°F 2003 | 30% | 13% |
| Mar 8 | 42°F | 21°F | 69°F 2012 | 3°F 2007 | 30% | 13% |
| Mar 9 | 43°F | 21°F | 77°F 2016 | 2°F 2007 | 30% | 13% |
| Mar 10 | 43°F | 21°F | 76°F 2026 | 6°F 2005 | 30% | 13% |
| Mar 11 | 43°F | 22°F | 72°F 2021 | 6°F 1953 | 30% | 12% |
| Mar 12 | 44°F | 22°F | 71°F 2012 | 6°F 2017 | 30% | 12% |
| Mar 13 | 44°F | 22°F | 72°F 2012 | 6°F 1998 | 30% | 12% |
| Mar 14 | 44°F | 23°F | 73°F 2007 | 12°F 2003 | 30% | 11% |
| Mar 15 | 44°F | 23°F | 68°F 2025 | 13°F 2021 | 30% | 11% |
| Mar 16 | 45°F | 23°F | 70°F 2025 | 14°F 1949 | 30% | 11% |
| Mar 17 | 45°F | 24°F | 68°F 2003 | -1°F 1967 | 30% | 11% |
| Mar 18 | 45°F | 24°F | 80°F 2012 | -4°F 1967 | 30% | 10% |
| Mar 19 | 46°F | 24°F | 79°F 2012 | -10°F 1967 | 30% | 10% |
| Mar 20 | 46°F | 25°F | 80°F 2012 | 2°F 1949 | 30% | 10% |
| Mar 21 | 47°F | 25°F | 83°F 2012 | 10°F 1967 | 31% | 9% |
| Mar 22 | 47°F | 25°F | 85°F 2012 | 14°F 2002 | 31% | 9% |
| Mar 23 | 47°F | 26°F | 73°F 2012 | 14°F 2015 | 31% | 9% |
| Mar 24 | 48°F | 26°F | 64°F 2000 | 14°F 2014 | 31% | 8% |
| Mar 25 | 48°F | 26°F | 68°F 2021 | 14°F 2014 | 31% | 8% |
| Mar 26 | 49°F | 27°F | 75°F 2021 | 21°F 2001 | 31% | 7% |
| Mar 27 | 49°F | 27°F | 76°F 1998 | 15°F 1951 | 31% | 7% |
| Mar 28 | 49°F | 27°F | 86°F 1998 | 18°F 1954 | 32% | 7% |
| Mar 29 | 50°F | 28°F | 72°F 1998 | 18°F 2022 | 32% | 6% |
| Mar 30 | 50°F | 28°F | 82°F 1998 | 22°F 2008 | 32% | 6% |
| Mar 31 | 51°F | 28°F | 89°F 1998 | 23°F 2023 | 33% | 6% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- March 1
- sunrise 6:22 AM, sunset 5:35 PM
- March 31
- sunrise 6:30 AM, sunset 7:11 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00275712 (Nashua 2 Nnw), public domain. Records: NOAA GHCN-Daily, station USW00014710, 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.