Hot-summer humid continental climate
Climate Groton - Connecticut
Annual high60ºF
Annual low44ºF
Precipitation49.68 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 38 | 22 | 3.78 | 6 |
| Feb | 41 | 25 | 3.51 | 8 |
| Mar | 48 | 32 | 5.07 | 3 |
| Apr | 57 | 41 | 4.54 | 1 |
| May | 67 | 49 | 3.65 | 0 |
| Jun | 76 | 59 | 4.08 | 0 |
| Jul | 81 | 65 | 3.63 | 0 |
| Aug | 80 | 65 | 4.29 | 0 |
| Sep | 74 | 57 | 4.16 | 0 |
| Oct | 63 | 46 | 4.15 | 0 |
| Nov | 54 | 38 | 4.54 | 1 |
| Dec | 44 | 28 | 4.28 | 5 |
- JanHigh 38ºFLow 22ºFPrecip 3.78 inch
- FebHigh 41ºFLow 25ºFPrecip 3.51 inch
- MarHigh 48ºFLow 32ºFPrecip 5.07 inch
- AprHigh 57ºFLow 41ºFPrecip 4.54 inch
- MayHigh 67ºFLow 49ºFPrecip 3.65 inch
- JunHigh 76ºFLow 59ºFPrecip 4.08 inch
- JulHigh 81ºFLow 65ºFPrecip 3.63 inch
- AugHigh 80ºFLow 65ºFPrecip 4.29 inch
- SepHigh 74ºFLow 57ºFPrecip 4.16 inch
- OctHigh 63ºFLow 46ºFPrecip 4.15 inch
- NovHigh 54ºFLow 38ºFPrecip 4.54 inch
- DecHigh 44ºFLow 28ºFPrecip 4.28 inch
Climate summary
What is the average weather in Groton, Connecticut?
Groton experiences a humid continental climate, marked by strong seasonal contrasts. Summers are warm, while winters are cold and bring regular snowfall. Precipitation is fairly wet overall, spread relatively evenly throughout the year, with winter moisture often arriving as snow.
Groton weather averages
Annual high60ºF
Annual low44ºF
Precipitation49.68 inch
Snowfall24 inch
Daily normals Groton - Connecticut - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 40.4 | 25.8 | 0.13 | 0.13 | 0.20 | 0.20 |
| Jan 2 | 40.2 | 25.6 | 0.26 | 0.26 | 0.40 | 0.40 |
| Jan 3 | 40.1 | 25.4 | 0.39 | 0.39 | 0.50 | 0.50 |
| Jan 4 | 39.9 | 25.2 | 0.53 | 0.53 | 0.70 | 0.70 |
| Jan 5 | 39.7 | 25.0 | 0.66 | 0.66 | 0.90 | 0.90 |
| Jan 6 | 39.6 | 24.9 | 0.80 | 0.80 | 1.10 | 1.10 |
| Jan 7 | 39.4 | 24.7 | 0.93 | 0.93 | 1.30 | 1.30 |
| Jan 8 | 39.3 | 24.5 | 1.06 | 1.06 | 1.40 | 1.40 |
| Jan 9 | 39.1 | 24.4 | 1.19 | 1.19 | 1.60 | 1.60 |
| Jan 10 | 39.0 | 24.2 | 1.32 | 1.32 | 1.80 | 1.80 |
| Jan 11 | 38.9 | 24.1 | 1.45 | 1.45 | 2.00 | 2.00 |
| Jan 12 | 38.8 | 23.9 | 1.59 | 1.59 | 2.20 | 2.20 |
| Jan 13 | 38.7 | 23.8 | 1.72 | 1.72 | 2.40 | 2.40 |
| Jan 14 | 38.6 | 23.7 | 1.85 | 1.85 | 2.50 | 2.50 |
| Jan 15 | 38.5 | 23.6 | 1.98 | 1.98 | 2.70 | 2.70 |
| Jan 16 | 38.4 | 23.5 | 2.10 | 2.10 | 2.90 | 2.90 |
| Jan 17 | 38.4 | 23.4 | 2.23 | 2.23 | 3.10 | 3.10 |
| Jan 18 | 38.3 | 23.3 | 2.35 | 2.35 | 3.30 | 3.30 |
| Jan 19 | 38.3 | 23.2 | 2.47 | 2.47 | 3.40 | 3.40 |
| Jan 20 | 38.2 | 23.1 | 2.59 | 2.59 | 3.60 | 3.60 |
| Jan 21 | 38.2 | 23.1 | 2.71 | 2.71 | 3.80 | 3.80 |
| Jan 22 | 38.2 | 23.0 | 2.83 | 2.83 | 4.00 | 4.00 |
| Jan 23 | 38.2 | 23.0 | 2.95 | 2.95 | 4.10 | 4.10 |
| Jan 24 | 38.2 | 22.9 | 3.07 | 3.07 | 4.30 | 4.30 |
| Jan 25 | 38.2 | 22.9 | 3.19 | 3.19 | 4.50 | 4.50 |
| Jan 26 | 38.2 | 22.9 | 3.31 | 3.31 | 4.70 | 4.70 |
| Jan 27 | 38.3 | 22.9 | 3.43 | 3.43 | 4.90 | 4.90 |
| Jan 28 | 38.3 | 22.9 | 3.55 | 3.55 | 5.10 | 5.10 |
| Jan 29 | 38.4 | 22.9 | 3.67 | 3.67 | 5.40 | 5.40 |
| Jan 30 | 38.5 | 23.0 | 3.79 | 3.79 | 5.60 | 5.60 |
| Jan 31 | 38.5 | 23.0 | 3.91 | 3.91 | 5.80 | 5.80 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Groton - December 2024
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Dec 1 | 45.0 | 27.0 | 0.00 |
| Dec 2 | 39.9 | 21.0 | 0.00 |
| Dec 3 | 37.9 | 23.0 | 0.00 |
| Dec 4 | 46.0 | 23.0 | 0.12 |
| Dec 5 | 45.0 | 35.1 | 0.85 |
| Dec 6 | 37.0 | 30.0 | 0.00 |
| Dec 7 | 39.9 | 28.9 | 0.01 |
| Dec 8 | 51.1 | 32.0 | 0.01 |
| Dec 9 | 50.0 | 30.0 | 0.24 |
| Dec 10 | 45.0 | 41.0 | 0.00 |
| Dec 11 | 60.1 | 42.1 | 3.35 |
| Dec 12 | 59.0 | 30.9 | 0.04 |
| Dec 13 | 59.0 | 25.0 | 0.00 |
| Dec 14 | 34.0 | 19.0 | 0.00 |
| Dec 15 | 36.0 | 19.0 | 0.00 |
| Dec 16 | 52.0 | 30.9 | 0.35 |
| Dec 17 | 57.9 | 34.0 | 0.45 |
| Dec 18 | 50.0 | 32.0 | 0.32 |
| Dec 19 | 48.0 | 35.1 | 0.15 |
| Dec 20 | 48.0 | 30.0 | 0.00 |
| Dec 21 | 33.1 | 18.0 | 0.03 |
| Dec 22 | 21.9 | 12.9 | 0.00 |
| Dec 23 | 28.0 | 8.1 | 0.00 |
| Dec 24 | 35.1 | 19.0 | 0.00 |
| Dec 25 | 35.1 | 23.0 | 0.00 |
| Dec 26 | 39.9 | 21.9 | 0.00 |
| Dec 27 | 41.0 | 19.9 | 0.00 |
| Dec 28 | 48.9 | 28.0 | 0.27 |
| Dec 29 | 55.0 | 39.0 | 0.13 |
| Dec 30 | 55.9 | 48.0 | 0.43 |
| Dec 31 | 53.1 | 34.0 | 0.00 |
The data for December 2024 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature60.1ºF · Dec 11
- Lowest max temperature21.9ºF · Dec 22
- Highest min temperature48.0ºF · Dec 30
- Lowest min temperature8.1ºF · Dec 23
Geo Groton - Connecticut
Location
- Country
- United States
- State
- Connecticut
- County
- New London
- City
- Groton
- Zip Code
- 6340
- Elevation
- 13 ft
- Longitude
- -72.05
- Latitude
- 41.33
- ICAO
- –
- IATA
- –