Groton, Connecticut, United States Climate

Weather: 8.64°C/47.55°F, Wind SW at 2.06 km/h, 95% Humidity, 0% Chance of rain

United States
(Photo by Bob Smith on Unsplash)
Contents

Groton Climate Summary

Located at an elevation of None meters (0 feet) above sea level, Groton has a Marine west coast, warm summer climate (Classification: Cfb). The district’s yearly temperature is 12.22ºC (54.0ºF) and it is -0.42% lower than United States’s averages. Groton typically receives about 46.86 millimeters (1.84 inches) of precipitation and has 42.99 rainy days (11.78% of the time) annually.

CountryUnited States
CityConnecticut
Longitude-72.0790717
Latitude41.3497456
Attitude/ElevationNonem (0ft)
Local timeThursday 08:49
Annual high temperature14.55ºC (58.19ºF)
Annual low temperature7.98ºC (46.36ºF)
Average annual precip.46.86mm (1.84in)
Warmest monthJuly (27.4ºC / 81.32ºF)
Coldest MonthJanuary (-2.96ºC / 26.67ºF)
Wettest MonthDecember (63.17mm / 2.49in)
Driest MonthSeptember (29.49mm / 1.16in)
Number of days with rainfall (≥ 1.0 mm)42.99 days (11.78%)
Days with no rain322.01 days (88.22%)
Humidity74.71%

Climate Groton: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)14.0(57.2)16.0(60.8)14.0(57.2)19.0(66.2)28.0(82.4)31.0(87.8)35.0(95.0)32.0(89.6)32.0(89.6)26.0(78.8)19.0(66.2)16.0(60.8)35.0(95.0)
Average high °C (°F)2.99(37.38)4.94(40.89)6.66(43.99)11.11(52.0)17.44(63.39)22.82(73.08)27.4(81.32)26.59(79.86)22.82(73.08)16.53(61.75)9.98(49.96)5.37(41.67)14.55(58.19)
Daily mean °C (°F)0.83(33.49)2.81(37.06)4.4(39.92)8.8(47.84)14.84(58.71)20.24(68.43)24.88(76.78)24.0(75.2)20.17(68.31)14.32(57.78)7.78(46.0)3.52(38.34)12.22(54.0)
Average low °C (°F)-2.96(26.67)-1.11(30.0)0.62(33.12)4.69(40.44)10.0(50.0)15.16(59.29)20.15(68.27)19.4(66.92)15.72(60.3)10.34(50.61)3.9(39.02)-0.12(31.78)7.98(46.36)
Record low °C (°F)-18.0(-0.4)-18.0(-0.4)-12.0(10.4)-2.0(28.4)4.0(39.2)9.0(48.2)15.0(59.0)12.0(53.6)7.0(44.6)0.0(0)-8.0(17.6)-10.0(14.0)-18.0(-0.4)
Average precipitation mm (inches)46.59(1.83)48.44(1.91)45.78(1.8)48.42(1.91)39.01(1.54)39.55(1.56)49.84(1.96)45.81(1.8)29.49(1.16)55.0(2.17)51.25(2.02)63.17(2.49)46.86(1.84)
Average precipitation days (≥ 1.0 mm)2.643.824.04.184.183.364.184.093.03.453.093.03.58
Average relative humidity (%)68.9871.7971.9973.4276.9477.4278.1878.4776.8375.8172.6973.9974.71
Mean monthly sunshine hours7.048.68.9410.212.5313.2313.5512.1510.198.476.746.599.85

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Groton in recent years.

Groton

Groton Temperature by Month

July
24.88°C | 76.78°F
August
24.0°C | 75.2°F
June
20.24°C | 68.43°F
September
20.17°C | 68.31°F
May
14.84°C | 58.71°F
October
14.32°C | 57.78°F
April
8.8°C | 47.84°F
November
7.78°C | 46.0°F
March
4.4°C | 39.92°F
December
3.52°C | 38.34°F
February
2.81°C | 37.06°F
January
0.83°C | 33.49°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature13.0°C (55.4°F)9.47°C (49.05°F)7.0°C (44.6°F)
Avg Temperature12.0°C (53.6°F)7.67°C (45.81°F)5.0°C (41.0°F)
Min Temperature7.0°C (44.6°F)4.37°C (39.87°F)-2.0°C (28.4°F)
Dew PointMaxAverageMin
Dew Point10.0°C (50.0°F)2.7°C (36.86°F)-4.0°C (24.8°F)
PrecipitationMaxAverageMinSum
Precipitation34.7mm | 1.37in5.37mm | 0.21in0.0mm | 0in161.2mm | 6.35in
Snowdepth0.7mm | 0.03in0.02mm | 0.0in0.0mm | 0in0.7mm | 0.03in
WindMaxAverageMin
Wind39.0kmh | 24.23mph20.4kmh | 12.68mph10.0kmh | 6.21mph
Gust Wind69.0kmh | 42.87mph30.63kmh | 19.03mph14.0kmh | 8.7mph
Sea Level PressureMaxAverageMin
Sea Level Pressure34.7mb5.37mb0.0mb
Groton

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
April° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2020-04-015 | 41.0-1 | 30.27215 | 9.3229.83 | 10100.0 | 0.0
2020-04-026 | 42.82 | 35.67927 | 16.7829.68 | 10054.0 | 0.16
2020-04-038 | 46.46 | 42.88628 | 17.429.74 | 10078.6 | 0.34
2020-04-048 | 46.44 | 39.27919 | 11.8130.0 | 10160.4 | 0.02
2020-04-057 | 44.64 | 39.28310 | 6.2130.06 | 10180.5 | 0.02
2020-04-0611 | 51.83 | 37.46614 | 8.730.0 | 10160.4 | 0.02
2020-04-079 | 48.21 | 33.85910 | 6.2130.0 | 10160.0 | 0.0
2020-04-088 | 46.46 | 42.88811 | 6.8429.56 | 100110.1 | 0.4
2020-04-098 | 46.45 | 41.08823 | 14.2929.38 | 99513.4 | 0.53
2020-04-106 | 42.8-1 | 30.26334 | 21.1329.26 | 9910.6 | 0.02
2020-04-116 | 42.8-2 | 28.45925 | 15.5329.77 | 10080.0 | 0.0
2020-04-1210 | 50.03 | 37.46715 | 9.3230.09 | 10190.0 | 0.0
2020-04-1312 | 53.610 | 50.08939 | 24.2329.85 | 101134.7 | 1.37
2020-04-148 | 46.42 | 35.66322 | 13.6729.97 | 10150.0 | 0.0
2020-04-156 | 42.82 | 35.67510 | 6.2129.91 | 10133.5 | 0.14
2020-04-165 | 41.0-3 | 26.65822 | 13.6730.0 | 10161.7 | 0.07
2020-04-175 | 41.0-3 | 26.66120 | 12.4330.15 | 10212.2 | 0.09
2020-04-187 | 44.65 | 41.09314 | 8.729.77 | 100816.2 | 0.64
2020-04-198 | 46.42 | 35.67024 | 14.9129.83 | 10100.0 | 0.0
2020-04-209 | 48.24 | 39.27217 | 10.5629.68 | 10050.0 | 0.0
2020-04-218 | 46.43 | 37.47622 | 13.6729.65 | 100412.4 | 0.49
2020-04-225 | 41.0-4 | 24.85529 | 18.0229.77 | 10080.0 | 0.0
2020-04-235 | 41.0-3 | 26.66116 | 9.9429.97 | 10153.4 | 0.13
2020-04-248 | 46.47 | 44.69322 | 13.6729.74 | 100714.6 | 0.57
2020-04-259 | 48.24 | 39.27515 | 9.3229.97 | 10150.9 | 0.04
2020-04-268 | 46.45 | 41.08425 | 15.5329.94 | 101417.6 | 0.69
2020-04-277 | 44.66 | 42.89024 | 14.9129.71 | 100611.4 | 0.45
2020-04-289 | 48.23 | 37.47413 | 8.0830.03 | 10170.0 | 0.0
2020-04-299 | 48.24 | 39.27918 | 11.1830.24 | 10240.0 | 0.0
2020-04-3010 | 50.07 | 44.68929 | 18.0230.18 | 10224.6 | 0.18

Groton 3 Year Historical Weather Data

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