Merrimack Weather in April
Average highs run from 51°F on April 1 to 65°F on April 30, and lows from 29°F to 40°F. Normal precipitation for the month is 4.21 in over about 11 wet days.
April day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
April at a glance
- Average high
- 59°F
- Average low
- 34°F
- Precipitation
- 4.21 in
- Snowfall
- 0.7 in
- Record high
- 94°FApr 17, 2002
- Record low
- 13°FApr 4, 1954
- Chance of a freeze
- 100%
- Daylight
- 12 h 44 min to 14 h 05 min
- Cloud cover
- 66%
- Humidity
- 79%
- Dew point
- 37°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 |
|---|---|---|---|---|---|---|
| Apr 1 | 51°F | 29°F | 77°F 2016 | 23°F 2003 | 33% | 6% |
| Apr 2 | 52°F | 29°F | 73°F 2010 | 23°F 2015 | 33% | 5% |
| Apr 3 | 52°F | 30°F | 80°F 2010 | 14°F 1954 | 33% | 5% |
| Apr 4 | 53°F | 30°F | 75°F 2010 | 13°F 1954 | 33% | 5% |
| Apr 5 | 53°F | 30°F | 75°F 2010 | 14°F 1954 | 34% | 4% |
| Apr 6 | 54°F | 31°F | 67°F 2005 | 18°F 2016 | 34% | 4% |
| Apr 7 | 54°F | 31°F | 88°F 2010 | 21°F 2003 | 34% | 4% |
| Apr 8 | 55°F | 31°F | 78°F 2000 | 25°F 2007 | 34% | 3% |
| Apr 9 | 55°F | 32°F | 75°F 2002 | 24°F 1955 | 34% | 3% |
| Apr 10 | 56°F | 32°F | 82°F 2017 | 22°F 1954 | 34% | 3% |
| Apr 11 | 56°F | 33°F | 88°F 2017 | 26°F 1998 | 35% | 3% |
| Apr 12 | 57°F | 33°F | 73°F 2023 | 28°F 1949 | 35% | 3% |
| Apr 13 | 57°F | 33°F | 91°F 2023 | 28°F 1954 | 35% | 2% |
| Apr 14 | 58°F | 34°F | 91°F 2023 | 26°F 2000 | 35% | 2% |
| Apr 15 | 58°F | 34°F | 83°F 2003 | 29°F 2008 | 35% | 2% |
| Apr 16 | 59°F | 35°F | 90°F 2012 | 28°F 2014 | 36% | 2% |
| Apr 17 | 59°F | 35°F | 94°F 2002 | 27°F 2014 | 36% | 2% |
| Apr 18 | 60°F | 35°F | 87°F 2002 | 25°F 2003 | 36% | 2% |
| Apr 19 | 60°F | 36°F | 88°F 2004 | 26°F 2001 | 36% | 1% |
| Apr 20 | 61°F | 36°F | 87°F 1954 | 26°F 2001 | 37% | 1% |
| Apr 21 | 61°F | 37°F | 83°F 1954 | 25°F 2026 | 37% | 1% |
| Apr 22 | 62°F | 37°F | 84°F 1954 | 29°F 2020 | 37% | 1% |
| Apr 23 | 62°F | 37°F | 87°F 2007 | 29°F 2024 | 37% | 1% |
| Apr 24 | 63°F | 38°F | 88°F 2001 | 30°F 2002 | 37% | 1% |
| Apr 25 | 63°F | 38°F | 90°F 2009 | 28°F 1949 | 37% | 1% |
| Apr 26 | 64°F | 39°F | 83°F 2009 | 30°F 1998 | 37% | 1% |
| Apr 27 | 64°F | 39°F | 80°F 2011 | 30°F 2002 | 38% | 1% |
| Apr 28 | 64°F | 39°F | 93°F 2009 | 33°F 2010 | 38% | 1% |
| Apr 29 | 65°F | 40°F | 85°F 2025 | 29°F 1954 | 38% | 1% |
| Apr 30 | 65°F | 40°F | 84°F 2004 | 31°F 2001 | 38% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- April 1
- sunrise 6:28 AM, sunset 7:12 PM
- April 30
- sunrise 5:41 AM, sunset 7:46 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.