Groton climate

Groton Weather in July

NOAA 1991-2020 normals for Andover #2, 15.5 km from Groton

Average highs run from 80°F on July 1 to 82°F on July 31, and lows from 60°F to 62°F. Normal precipitation for the month is 3.81 in.

July 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.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
82°F
Average low
61°F
Precipitation
3.81 in
Record high
106°FJul 17, 2017
Record low
44°FJul 1, 2016
Chance of a freeze
0%
Days of 90°F or more
4.9
Daylight
15 h 37 min to 14 h 46 min
Cloud cover
49%
Humidity
61%
Dew point
58°F
Wind
9.6 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
Jul 180°F60°F95°F 201244°F 20160%
Jul 281°F60°F96°F 201250°F 20160%
Jul 381°F60°F95°F 202150°F 20140%
Jul 481°F60°F96°F 201260°F 20230%
Jul 581°F60°F100°F 201752°F 20230%
Jul 681°F60°F92°F 202645°F 20230%
Jul 781°F61°F93°F 201849°F 20150%
Jul 881°F61°F95°F 201851°F 20230%
Jul 981°F61°F101°F 201748°F 20150%
Jul 1082°F61°F90°F 201856°F 20230%
Jul 1182°F61°F103°F 201751°F 20230%
Jul 1282°F61°F95°F 201549°F 20230%
Jul 1382°F61°F93°F 202653°F 20140%
Jul 1482°F62°F92°F 202649°F 20170%
Jul 1582°F62°F99°F 201249°F 20160%
Jul 1682°F62°F95°F 201247°F 20140%
Jul 1782°F62°F106°F 201746°F 20250%
Jul 1882°F62°F95°F 202253°F 20240%
Jul 1982°F62°F94°F 201253°F 20150%
Jul 2082°F62°F98°F 201252°F 20230%
Jul 2182°F62°F91°F 201450°F 20150%
Jul 2282°F62°F95°F 201255°F 20190%
Jul 2382°F62°F95°F 202154°F 20190%
Jul 2482°F62°F95°F 202052°F 20180%
Jul 2582°F62°F94°F 202656°F 20160%
Jul 2682°F62°F97°F 202352°F 20180%
Jul 2782°F62°F92°F 201547°F 20180%
Jul 2882°F62°F97°F 202149°F 20230%
Jul 2982°F62°F93°F 202646°F 20140%
Jul 3082°F62°F89°F 202252°F 20140%
Jul 3182°F62°F93°F 201850°F 20180%

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.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

July 1
sunrise 5:48 AM, sunset 9:25 PM
July 31
sunrise 6:15 AM, sunset 9:01 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00390120 (Andover #2), public domain. Records: NOAA GHCN-Daily, station USC00390022, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.