Suffolk County Weather in March
Average highs run from 44°F on March 1 to 53°F on March 31, and lows from 29°F to 37°F. Normal precipitation for the month is 4.72 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
- 48°F
- Average low
- 33°F
- Precipitation
- 4.72 in
- Snowfall
- 6.0 in
- Record high
- 76°FMar 18, 2011
- Record low
- -9°FMar 7, 2015
- Chance of a freeze
- 100%
- Daylight
- 11 h 17 min to 12 h 39 min
- Cloud cover
- 62%
- Humidity
- 82%
- Dew point
- 33°F
- Wind
- 12.3 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 | 44°F | 29°F | 60°F 2004 | 0°F 2014 | 31% | 10% |
| Mar 2 | 44°F | 30°F | 57°F 2007 | 8°F 1967 | 31% | 10% |
| Mar 3 | 45°F | 30°F | 64°F 2024 | 4°F 2003 | 31% | 10% |
| Mar 4 | 45°F | 30°F | 55°F 1965 | -1°F 2009 | 31% | 10% |
| Mar 5 | 45°F | 30°F | 60°F 2008 | -3°F 2009 | 31% | 9% |
| Mar 6 | 45°F | 30°F | 59°F 2025 | -1°F 2015 | 31% | 9% |
| Mar 7 | 46°F | 31°F | 65°F 2009 | -9°F 2015 | 31% | 9% |
| Mar 8 | 46°F | 31°F | 61°F 2009 | 0°F 2007 | 31% | 9% |
| Mar 9 | 46°F | 31°F | 66°F 2026 | 6°F 2005 | 31% | 9% |
| Mar 10 | 46°F | 31°F | 68°F 2016 | 1°F 2005 | 31% | 9% |
| Mar 11 | 47°F | 32°F | 65°F 2014 | 4°F 2003 | 31% | 8% |
| Mar 12 | 47°F | 32°F | 67°F 2021 | 13°F 2017 | 31% | 8% |
| Mar 13 | 47°F | 32°F | 60°F 2016 | 8°F 2017 | 31% | 8% |
| Mar 14 | 48°F | 32°F | 69°F 2012 | 14°F 2014 | 31% | 8% |
| Mar 15 | 48°F | 32°F | 69°F 2024 | 18°F 1968 | 31% | 8% |
| Mar 16 | 48°F | 33°F | 64°F 2002 | 19°F 2021 | 32% | 7% |
| Mar 17 | 48°F | 33°F | 70°F 2003 | 16°F 1967 | 32% | 7% |
| Mar 18 | 49°F | 33°F | 76°F 2011 | 7°F 1967 | 32% | 7% |
| Mar 19 | 49°F | 33°F | 66°F 2012 | -1°F 1967 | 32% | 7% |
| Mar 20 | 49°F | 34°F | 70°F 2010 | 7°F 1967 | 32% | 6% |
| Mar 21 | 50°F | 34°F | 68°F 2012 | 14°F 1965 | 32% | 6% |
| Mar 22 | 50°F | 34°F | 69°F 2012 | 12°F 2004 | 32% | 6% |
| Mar 23 | 50°F | 34°F | 71°F 2012 | 4°F 2004 | 32% | 6% |
| Mar 24 | 51°F | 35°F | 65°F 2000 | 12°F 2014 | 32% | 5% |
| Mar 25 | 51°F | 35°F | 66°F 2021 | 6°F 2014 | 32% | 5% |
| Mar 26 | 52°F | 35°F | 72°F 2021 | 15°F 1960 | 33% | 5% |
| Mar 27 | 52°F | 35°F | 73°F 2007 | 15°F 2019 | 33% | 4% |
| Mar 28 | 52°F | 36°F | 67°F 1960 | 16°F 2001 | 33% | 4% |
| Mar 29 | 53°F | 36°F | 73°F 2025 | 14°F 2026 | 33% | 4% |
| Mar 30 | 53°F | 36°F | 64°F 2007 | 15°F 2016 | 34% | 4% |
| Mar 31 | 53°F | 37°F | 70°F 1999 | 15°F 2023 | 34% | 3% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- March 1
- sunrise 6:25 AM, sunset 5:42 PM
- March 31
- sunrise 6:36 AM, sunset 7:15 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00307134 (Riverhead Rsch Farm), public domain. Records: NOAA GHCN-Daily, station USW00014719, 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.