Boston weather in March: Boston, Massachusetts: normal highs, lows, rain and records for March
Boston in March has a normal high of 46°F and a normal low of 31°F, a daily mean of 38°F, rising from 42°F on the 1st to 50°F by the 31st. Measurable precipitation falls on 12 days in a normal March, 4.17 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 8°C and low of 0°C, 106 mm of precipitation and 23 cm of snow in March.
- NOAA stationBoston Logan International Airport
- Station IDUSW00014739
- Location42.36°N 71.01°W
- Elevation12 ft (4 m)
- From the center2 miles
- Population673,458
- Jan 37° 23°
- Feb 39° 25°
- Mar 46° 31°
- Apr 56° 41°
- May 67° 50°
- Jun 76° 60°
- Jul 82° 66°
- Aug 80° 65°
- Sep 73° 58°
- Oct 62° 48°
- Nov 52° 38°
- Dec 42° 29°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Boston in March?
The normal high is 46°F and the normal low 31°F, for a daily mean of 38.3°F. March is 6.5°F warmer than February and 10.3°F cooler than April. March is the 9th warmest month of the year in Boston and the 2nd wettest. Across the month the normal high rises 8°F, from 42°F on March 1 to 50°F on March 31. From one year to the next March's mean temperature typically moves about 3.3°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| March 1 | 42°F | 27°F | 37% | 22% |
| March 8 | 43°F | 29°F | 38% | 23% |
| March 15 | 45°F | 31°F | 38% | 23% |
| March 22 | 47°F | 33°F | 38% | 23% |
| March 31 | 50°F | 35°F | 39% | 23% |
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 | 42°F | 27°F | 37% | 22% | 11 h 10 min |
| March 2 | 42°F | 28°F | 37% | 22% | 11 h 10 min |
| March 3 | 42°F | 28°F | 37% | 22% | 11 h 20 min |
| March 4 | 42°F | 28°F | 37% | 22% | 11 h 20 min |
| March 5 | 43°F | 28°F | 37% | 23% | 11 h 20 min |
| March 6 | 43°F | 29°F | 38% | 23% | 11 h 30 min |
| March 7 | 43°F | 29°F | 38% | 23% | 11 h 30 min |
| March 8 | 43°F | 29°F | 38% | 23% | 11 h 30 min |
| March 9 | 44°F | 29°F | 38% | 23% | 11 h 30 min |
| March 10 | 44°F | 30°F | 38% | 23% | 11 h 40 min |
| March 11 | 44°F | 30°F | 38% | 23% | 11 h 40 min |
| March 12 | 44°F | 30°F | 38% | 23% | 11 h 40 min |
| March 13 | 45°F | 30°F | 38% | 23% | 11 h 50 min |
| March 14 | 45°F | 30°F | 38% | 23% | 11 h 50 min |
| March 15 | 45°F | 31°F | 38% | 23% | 11 h 50 min |
| March 16 | 45°F | 31°F | 38% | 23% | 11 h 50 min |
| March 17 | 46°F | 31°F | 38% | 23% | 12 h |
| March 18 | 46°F | 32°F | 38% | 23% | 12 h |
| March 19 | 46°F | 32°F | 38% | 23% | 12 h |
| March 20 | 46°F | 32°F | 38% | 23% | 12 h 10 min |
| March 21 | 47°F | 32°F | 38% | 23% | 12 h 10 min |
| March 22 | 47°F | 33°F | 38% | 23% | 12 h 10 min |
| March 23 | 47°F | 33°F | 38% | 23% | 12 h 10 min |
| March 24 | 48°F | 33°F | 38% | 23% | 12 h 20 min |
| March 25 | 48°F | 33°F | 38% | 23% | 12 h 20 min |
| March 26 | 48°F | 34°F | 38% | 23% | 12 h 20 min |
| March 27 | 49°F | 34°F | 39% | 23% | 12 h 30 min |
| March 28 | 49°F | 34°F | 39% | 23% | 12 h 30 min |
| March 29 | 49°F | 35°F | 39% | 23% | 12 h 30 min |
| March 30 | 50°F | 35°F | 39% | 23% | 12 h 30 min |
| March 31 | 50°F | 35°F | 39% | 23% | 12 h 40 min |
- Normal high
- 46°FMarch average
- Normal low
- 31°FMarch average
- Precipitation
- 4.17 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 9.0 inmonth total
- Nights at 32°F or colder
- 16
- Daylight
- 11 h 10 min to 12 h 40 minMarch 1 to March 31
- Days at 70°F or more
- 1
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014739; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Boston in March?
On a given March day the chance of 0.01 inch or more is 38% on average, highest around March 31 (39%). In all, 4.17 in falls on 12 days of a normal March, 1 of them with an inch or more.
In a normal March in Boston, 16 nights fall to freezing, 2 days stay below freezing all day and snowfall averages 9.0 inches.
Snow falls on 4 days in a normal March.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014739.
How humid and windy is Boston in March?
At 3 p.m. the normal temperature is 48°F with 50% relative humidity and a dew point of 30°F; at 6 a.m. it is 39°F with 68% humidity. The wind averages 12.3 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 39°F | 29°F | 68% | 10.9 mph | 39% |
| 9 a.m. | 43°F | 29°F | 58% | 12.7 mph | 34% |
| noon | 47°F | 30°F | 52% | 14.2 mph | 28% |
| 3 p.m. | 48°F | 30°F | 50% | 15.0 mph | 25% |
| 6 p.m. | 46°F | 29°F | 53% | 13.4 mph | 27% |
| 9 p.m. | 43°F | 30°F | 60% | 11.3 mph | 44% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014739. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for March in Boston?
The warmest March temperature on Boston's official record (since 1872) is 89°F, on March 31, 1998; the coldest is −8°F, on March 6, 1872. The wettest March brought 14.87 in (2010); the snowiest, 38.9 inches (1993).
The March mean against the 1991-2020 normal of 38.3°F: 2021 42.0°F (+3.8), 2022 41.4°F (+3.1), 2023 40.8°F (+2.5), 2024 42.0°F (+3.7), 2025 42.3°F (+4.0), 2026 41.4°F (+3.1). 6 of 6 ran warmer than normal.
| March | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 42.0°F | +3.8°F | 1.89 in |
| 2022 | 41.4°F | +3.1°F | 2.93 in |
| 2023 | 40.8°F | +2.5°F | 4.29 in |
| 2024 | 42.0°F | +3.7°F | 8.94 in |
| 2025 | 42.3°F | +4.0°F | 4.10 in |
| 2026 | 41.4°F | +3.1°F | 3.64 in |
Source: records: ACIS, NWS threaded record BOSthr; recent months: ACIS, station USW00014739. Records and recent months use complete months only.
How does March in Boston compare across Massachusetts?
Across the 35 places PlainClimate covers in Massachusetts, March normal highs run from 42°F in Pittsfield to 49°F in Norwood; Boston's is 46°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.