Climateby Month

Mystic, CT weather in March

NOAA 1991-2020 normals and daily records · Mystic all year

Expect chilly weather with frequent rain and some snow in Mystic in March, with highs near 47°F and lows near 32°F. Rain or snow falls on about 12 days. Snowfall averages about 3.9 in.

Normal high
47°F
Normal low
32°F
Wet days
12
4.9 in total
Snowfall
3.9 in
snow on the ground 3 days

How March changes from start to finish

Normal values at the start and end of March
March 1March 31
Normal high44°F51°F
Normal low28°F36°F
Chance of a wet day36%38%
Sunrise / sunset6:22 am / 5:38 pm6:32 am / 7:11 pm
Daylight11.3 h12.7 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

A typical March day

  1. 6 am33°Fdew point 25°F
  2. 9 am39°Fdew point 25°F
  3. Noon44°Fdew point 25°F
  4. 3 pm45°Fdew point 25°F
  5. 6 pm41°Fdew point 25°F
  6. 9 pm38°Fdew point 26°F

NOAA hourly normals (local standard time) from Providence T F Green Airport (38 mi away); average wind 11 mph.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°Fnot available
  • Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph0 of 31
  • Hot dayshigh 90°F or more0 of 31
  • Muggy daysdaily mean dew point 65°F or more0 of 31
  • Wet daysat least 0.01 in of rain or melted snow12 of 31
  • Notable rainat least 0.10 in8 of 31
  • Freezing nightslow 32°F or below18 of 31
  • Snow on the groundsnow depth 1 in or more3 of 31

Average days per March, counted from daily records for each year 1991-2020.

Rain and snow in March

Normal precipitation is 4.9 in; a dry March brings about 2.9 in and a wet one about 5.6 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more. Normal snowfall is 3.9 in, with about 1 day of an inch or more.

How March varies from year to year

  • Warmest March, 1991-20202012: average high 54°F
  • Coolest March2015: average high 42°F
  • Wettest March2001: 9.2 in
  • Driest March2012: 1.3 in
  • Highest reading78°F (March 29, 1998)
  • Lowest reading5°F (March 7, 2015)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

March compared with February and April

FebruaryMarchApril
Normal high41°F47°F57°F
Normal low25°F32°F41°F
Wet days101212
Comfortable days0––
Daylight10.6 h12.0 h13.3 h

Highs change by +6°F from February and +10°F into April.

Nearby alternatives in March

How Mystic ranks in March

  • Normal high295th warmest of 378 cities; 4th of 5 in Connecticut
  • Wet days308th driest of 378

What to pack for Mystic in March

  • A warm jacket – lows near 32°F, highs near 47°F
  • A rain jacket or umbrella – rain or snow on about 12 days
  • Waterproof boots – about 3.9 in of snow in a typical year
  • A hat and gloves – about 18 freezing nights

Heating and cooling

March has 792 heating degree days and 0 cooling degree days (base 65°F), 13% of the year's total heating and cooling demand.

Questions

How cold is Mystic in March?

The normal high is 47°F and the normal low is 32°F. From 1991 to 2020 the coldest March reading was 5°F (March 7, 2015).

Does it rain a lot in Mystic in March?

About 12 days in March have at least 0.01 in of precipitation, and the normal total is 4.9 in. The wettest March in 1991-2020 was in 2001 (9.2 in); the driest was in 2012 (1.3 in).

Does it snow in Mystic in March?

Yes. Normal snowfall in March is 3.9 in, and snow covers the ground on about 3 days.

Where the numbers come from

  • Temperature, rain, snowfall and snow depth: Groton (USC00063207), 3.7 mi W of the city center, 40 ft . NOAA normals and daily records, 1991-2020.
  • Frost dates: Groton New London Airport (USW00014707), 4.7 mi WSW of the city center, 10 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Providence T F Green Airport (USW00014765), 38 mi NE of the city center, 60 ft (52 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Groton-New London Airport (725046-14707), 4.7 mi WSW of the city center, 8 ft . Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).