New Haven weather in March: New Haven, Connecticut: normal highs, lows, rain and records for March
New Haven in March has a normal high of 47°F and a normal low of 30°F, a daily mean of 39°F, rising from 43°F on the 1st to 52°F by the 31st. Measurable precipitation falls on 10 days in a normal March, 3.66 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 8°C and low of −1°C, 93 mm of precipitation in March.
- NOAA stationNew Haven Tweed Airport
- Station IDUSW00014758
- Location41.26°N 72.89°W
- Elevation3 ft (1 m)
- From the center4 miles
- Population137,562
- Jan 38° 23°
- Feb 40° 24°
- Mar 47° 30°
- Apr 58° 39°
- May 68° 49°
- Jun 76° 59°
- Jul 82° 66°
- Aug 81° 65°
- Sep 75° 57°
- Oct 64° 46°
- Nov 53° 36°
- Dec 44° 29°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is New Haven in March?
The normal high is 47°F and the normal low 30°F, for a daily mean of 38.5°F. March is 6.5°F warmer than February and 10.0°F cooler than April. March is the 9th warmest month of the year in New Haven and the 4th wettest. Across the month the normal high rises 9°F, from 43°F on March 1 to 52°F on March 31. From one year to the next March's mean temperature typically moves about 3.4°F either way (NOAA's standard deviation), so roughly two Marchs in three average between 35°F and 42°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| March 1 | 43°F | 26°F | 30% | 19% |
| March 8 | 45°F | 28°F | 30% | 18% |
| March 15 | 47°F | 30°F | 31% | 19% |
| March 22 | 49°F | 32°F | 32% | 19% |
| March 31 | 52°F | 34°F | 34% | 21% |
Every day of March: normal high, low and chance of precipitation (warmest afternoon March 31, coldest night March 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| March 1 | 43°F | 26°F | 30% | 19% | 11 h 10 min |
| March 2 | 43°F | 27°F | 30% | 19% | 11 h 20 min |
| March 3 | 43°F | 27°F | 30% | 18% | 11 h 20 min |
| March 4 | 44°F | 27°F | 30% | 18% | 11 h 20 min |
| March 5 | 44°F | 27°F | 30% | 18% | 11 h 20 min |
| March 6 | 44°F | 28°F | 30% | 18% | 11 h 30 min |
| March 7 | 44°F | 28°F | 30% | 18% | 11 h 30 min |
| March 8 | 45°F | 28°F | 30% | 18% | 11 h 30 min |
| March 9 | 45°F | 28°F | 30% | 18% | 11 h 40 min |
| March 10 | 45°F | 29°F | 31% | 18% | 11 h 40 min |
| March 11 | 45°F | 29°F | 31% | 18% | 11 h 40 min |
| March 12 | 46°F | 29°F | 31% | 18% | 11 h 40 min |
| March 13 | 46°F | 29°F | 31% | 18% | 11 h 50 min |
| March 14 | 46°F | 30°F | 31% | 18% | 11 h 50 min |
| March 15 | 47°F | 30°F | 31% | 19% | 11 h 50 min |
| March 16 | 47°F | 30°F | 31% | 19% | 11 h 50 min |
| March 17 | 47°F | 30°F | 31% | 19% | 12 h |
| March 18 | 47°F | 31°F | 31% | 19% | 12 h |
| March 19 | 48°F | 31°F | 32% | 19% | 12 h |
| March 20 | 48°F | 31°F | 32% | 19% | 12 h 10 min |
| March 21 | 48°F | 31°F | 32% | 19% | 12 h 10 min |
| March 22 | 49°F | 32°F | 32% | 19% | 12 h 10 min |
| March 23 | 49°F | 32°F | 32% | 19% | 12 h 10 min |
| March 24 | 49°F | 32°F | 32% | 19% | 12 h 20 min |
| March 25 | 50°F | 33°F | 33% | 19% | 12 h 20 min |
| March 26 | 50°F | 33°F | 33% | 20% | 12 h 20 min |
| March 27 | 50°F | 33°F | 33% | 20% | 12 h 30 min |
| March 28 | 51°F | 33°F | 33% | 20% | 12 h 30 min |
| March 29 | 51°F | 34°F | 33% | 20% | 12 h 30 min |
| March 30 | 51°F | 34°F | 34% | 20% | 12 h 30 min |
| March 31 | 52°F | 34°F | 34% | 21% | 12 h 40 min |
- Normal high
- 47°FMarch average
- Normal low
- 30°FMarch average
- Precipitation
- 3.66 inmonth total
- Days with precipitation
- 100.01 inch or more
- Nights at 32°F or colder
- 17
- Daylight
- 11 h 10 min to 12 h 40 minMarch 1 to March 31
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014758; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in New Haven in March?
On a given March day the chance of 0.01 inch or more is 31% on average, highest around March 31 (34%). In all, 3.66 in falls on 10 days of a normal March, 1 of them with an inch or more.
In a normal March in New Haven, 17 nights fall to freezing and 2 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014758.
What are the records for March in New Haven?
The warmest March temperature on this station's record (since 1948) is 77°F, on March 26, 2021; the coldest is 1°F, on March 6, 1948. The wettest March brought 10.78 in (1953); the snowiest, 26.9 inches (1956).
The March mean against the 1991-2020 normal of 38.5°F: 2021 41.8°F (+3.3), 2022 42.4°F (+3.9), 2023 42.6°F (+4.1), 2024 46.0°F (+7.5), 2025 44.3°F (+5.8), 2026 40.0°F (+1.5). 6 of 6 ran warmer than normal.
| March | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 41.8°F | +3.3°F | 2.83 in |
| 2022 | 42.4°F | +3.9°F | 2.38 in |
| 2023 | 42.6°F | +4.1°F | 3.59 in |
| 2024 | 46.0°F | +7.5°F | 9.48 in |
| 2025 | 44.3°F | +5.8°F | 3.73 in |
| 2026 | 40.0°F | +1.5°F | 4.87 in |
Source: records: ACIS, station USW00014758; recent months: ACIS, station USW00014758. Records and recent months use complete months only.
How does March in New Haven compare across Connecticut?
Across the 13 places PlainClimate covers in Connecticut, March normal highs run from 40°F in Norfolk to 49°F in Stamford; New Haven's is 47°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.