Groton climate

Groton Weather in August

NOAA 1991-2020 normals for Freeville 1 Ne, 8.2 km from Groton

Average highs run from 79°F on August 1 to 75°F on August 31, and lows from 57°F to 53°F. Normal precipitation for the month is 4.09 in over about 11 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Groton, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
78°F
Average low
55°F
Precipitation
4.09 in
Record high
93°FAug 19, 2009
Record low
40°FAug 26, 2017
Chance of a freeze
0%
Daylight
14 h 27 min to 13 h 12 min
Cloud cover
59%
Humidity
73%
Dew point
58°F
Wind
3.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 179°F57°F84°F 201151°F 201440%0%
Aug 279°F57°F87°F 201148°F 202540%0%
Aug 379°F57°F89°F 202046°F 202140%0%
Aug 479°F57°F90°F 202251°F 202140%0%
Aug 579°F57°F88°F 201243°F 201340%0%
Aug 679°F56°F88°F 201846°F 201739%0%
Aug 779°F56°F89°F 201847°F 200939%0%
Aug 879°F56°F88°F 202244°F 200939%0%
Aug 979°F56°F87°F 201247°F 201439%0%
Aug 1078°F56°F88°F 201251°F 201439%0%
Aug 1178°F56°F89°F 200947°F 201938%0%
Aug 1278°F56°F91°F 202047°F 201138%0%
Aug 1378°F56°F92°F 202545°F 202238%0%
Aug 1478°F56°F91°F 201645°F 201438%0%
Aug 1578°F56°F87°F 200941°F 201338%0%
Aug 1678°F55°F89°F 200945°F 201437%0%
Aug 1778°F55°F89°F 200944°F 201437%0%
Aug 1878°F55°F91°F 200949°F 201437%0%
Aug 1977°F55°F93°F 200944°F 201237%0%
Aug 2077°F55°F84°F 201642°F 202036%0%
Aug 2177°F55°F87°F 202245°F 201236%0%
Aug 2277°F55°F85°F 202048°F 201236%0%
Aug 2377°F54°F84°F 201746°F 201136%0%
Aug 2477°F54°F89°F 202045°F 201935%0%
Aug 2577°F54°F89°F 202047°F 201735%0%
Aug 2676°F54°F88°F 202140°F 201735%0%
Aug 2776°F54°F85°F 202142°F 201735%0%
Aug 2876°F54°F84°F 201641°F 202535%0%
Aug 2976°F53°F89°F 201843°F 201435%0%
Aug 3076°F53°F90°F 202241°F 201235%0%
Aug 3175°F53°F83°F 201343°F 201734%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Groton, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 5:58 AM, sunset 8:25 PM
August 31
sunrise 6:29 AM, sunset 7:41 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00303050 (Freeville 1 Ne), public domain. Records: NOAA GHCN-Daily, station USC00303050, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.