Groton weather in February: Groton, Connecticut: normal highs, lows, rain and records for February
Groton in February has a normal high of 40°F and a normal low of 25°F, a daily mean of 32°F, rising from 38°F on the 1st to 43°F by the 29th. Measurable precipitation falls on 8 days in a normal February, 2.20 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 5°C and low of −4°C, 56 mm of precipitation in February.
- NOAA stationGroton New London Airport
- Station IDUSW00014707
- Location41.33°N 72.05°W
- Elevation10 ft (3 m)
- Population10,160
- Jan 38° 23°
- Feb 40° 25°
- Mar 47° 31°
- Apr 56° 39°
- May 65° 49°
- Jun 74° 58°
- Jul 80° 65°
- Aug 79° 64°
- Sep 74° 57°
- Oct 63° 46°
- Nov 53° 37°
- 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 Groton in February?
The normal high is 40°F and the normal low 25°F, for a daily mean of 32.4°F. February is 1.6°F warmer than January and 6.2°F cooler than March. February is the 11th warmest month of the year in Groton and the 12th wettest. Across the month the normal high rises 5°F, from 38°F on February 1 to 43°F on February 29. From one year to the next February's mean temperature typically moves about 4.0°F either way (NOAA's standard deviation), so roughly two Februarys in three average between 28°F and 36°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 29%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| February 1 | 38°F | 23°F | 26% | 15% |
| February 8 | 39°F | 24°F | 26% | 16% |
| February 15 | 40°F | 25°F | 27% | 16% |
| February 22 | 42°F | 26°F | 29% | 17% |
| February 28 | 43°F | 27°F | 29% | 17% |
Every day of February: normal high, low and chance of precipitation (warmest afternoon February 29, coldest night February 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| February 1 | 38°F | 23°F | 26% | 15% | 10 h |
| February 2 | 38°F | 23°F | 26% | 15% | 10 h |
| February 3 | 38°F | 23°F | 26% | 15% | 10 h 10 min |
| February 4 | 39°F | 23°F | 26% | 15% | 10 h 10 min |
| February 5 | 39°F | 23°F | 26% | 15% | 10 h 10 min |
| February 6 | 39°F | 23°F | 26% | 15% | 10 h 10 min |
| February 7 | 39°F | 23°F | 26% | 16% | 10 h 20 min |
| February 8 | 39°F | 24°F | 26% | 16% | 10 h 20 min |
| February 9 | 39°F | 24°F | 26% | 16% | 10 h 20 min |
| February 10 | 39°F | 24°F | 27% | 16% | 10 h 20 min |
| February 11 | 40°F | 24°F | 27% | 16% | 10 h 30 min |
| February 12 | 40°F | 24°F | 27% | 16% | 10 h 30 min |
| February 13 | 40°F | 24°F | 27% | 16% | 10 h 30 min |
| February 14 | 40°F | 24°F | 27% | 16% | 10 h 30 min |
| February 15 | 40°F | 25°F | 27% | 16% | 10 h 40 min |
| February 16 | 40°F | 25°F | 28% | 16% | 10 h 40 min |
| February 17 | 41°F | 25°F | 28% | 16% | 10 h 40 min |
| February 18 | 41°F | 25°F | 28% | 16% | 10 h 40 min |
| February 19 | 41°F | 25°F | 28% | 16% | 10 h 50 min |
| February 20 | 41°F | 25°F | 28% | 17% | 10 h 50 min |
| February 21 | 41°F | 26°F | 29% | 17% | 10 h 50 min |
| February 22 | 42°F | 26°F | 29% | 17% | 10 h 50 min |
| February 23 | 42°F | 26°F | 29% | 17% | 11 h |
| February 24 | 42°F | 26°F | 29% | 17% | 11 h |
| February 25 | 42°F | 26°F | 29% | 17% | 11 h |
| February 26 | 42°F | 27°F | 29% | 17% | 11 h |
| February 27 | 43°F | 27°F | 29% | 17% | 11 h 10 min |
| February 28 | 43°F | 27°F | 29% | 17% | 11 h 10 min |
| February 29 | 43°F | 27°F | 29% | 17% | 11 h 10 min |
- Normal high
- 40°FFebruary average
- Normal low
- 25°FFebruary average
- Precipitation
- 2.20 inmonth total
- Days with precipitation
- 80.01 inch or more
- Nights at 32°F or colder
- 24
- Daylight
- 10 h to 11 h 10 minFebruary 1 to February 28
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014707; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Groton in February?
On a given February day the chance of 0.01 inch or more is 27% on average, highest around February 25 (29%). In all, 2.20 in falls on 8 days of a normal February.
In a normal February in Groton, 24 nights fall to freezing and 5 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014707.
What are the records for February in Groton?
The warmest February temperature on this station's record (since 1999) is 71°F, on February 16, 2023; the coldest is −8°F, on February 14, 2016. The wettest February brought 4.16 in (2022).
The February mean against the 1991-2020 normal of 32.4°F: 2021 32.0°F (−0.4), 2023 37.2°F (+4.8), 2024 35.2°F (+2.8), 2025 31.4°F (−1.0), 2026 26.6°F (−5.8). 2 of 5 ran warmer than normal.
| February | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 32.0°F | −0.4°F | 2.32 in |
| 2023 | 37.2°F | +4.8°F | 1.04 in |
| 2024 | 35.2°F | +2.8°F | 1.61 in |
| 2025 | 31.4°F | −1.0°F | 2.33 in |
| 2026 | 26.6°F | −5.8°F | 1.28 in |
Source: records: ACIS, station USW00014707; recent months: ACIS, station USW00014707. Records and recent months use complete months only.
How does February in Groton compare across Connecticut?
Across the 13 places PlainClimate covers in Connecticut, February normal highs run from 32°F in Norfolk to 41°F in Stamford; Groton's is 40°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.