Groton climate

Groton Weather in July

NOAA 1991-2020 normals for Nashua Cwsu, 15.7 km from Groton

Average highs run from 84°F on July 1 to 84°F on July 31, and lows from 60°F to 62°F. Normal precipitation for the month is 3.63 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
85°F
Average low
62°F
Precipitation
3.63 in
Record high
103°FJul 22, 2011
Record low
47°FJul 31, 2001
Chance of a freeze
0%
Days of 90°F or more
11.8
Daylight
15 h 16 min to 14 h 31 min
Cloud cover
57%
Humidity
74%
Dew point
62°F
Wind
4.3 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 184°F60°F96°F 202650°F 20070%
Jul 284°F60°F98°F 202650°F 20070%
Jul 384°F61°F97°F 200250°F 20010%
Jul 484°F61°F97°F 200253°F 20070%
Jul 584°F61°F98°F 201053°F 20250%
Jul 685°F61°F100°F 201051°F 20000%
Jul 785°F61°F97°F 201049°F 20180%
Jul 885°F61°F93°F 202450°F 20000%
Jul 985°F62°F93°F 202053°F 20090%
Jul 1085°F62°F92°F 201849°F 20220%
Jul 1185°F62°F93°F 201151°F 20020%
Jul 1285°F62°F93°F 201150°F 19990%
Jul 1385°F62°F93°F 201252°F 20010%
Jul 1485°F62°F95°F 201252°F 19990%
Jul 1585°F62°F94°F 201354°F 20090%
Jul 1685°F62°F94°F 201353°F 20150%
Jul 1785°F62°F96°F 201252°F 20150%
Jul 1885°F62°F97°F 201356°F 20010%
Jul 1985°F62°F97°F 201352°F 20180%
Jul 2085°F62°F97°F 201952°F 20000%
Jul 2185°F62°F97°F 201151°F 20120%
Jul 2285°F62°F103°F 201148°F 20250%
Jul 2385°F62°F96°F 201652°F 20250%
Jul 2485°F62°F97°F 202253°F 20260%
Jul 2585°F62°F96°F 201650°F 20020%
Jul 2685°F62°F94°F 201649°F 20260%
Jul 2785°F62°F95°F 200548°F 20010%
Jul 2885°F62°F94°F 201648°F 20010%
Jul 2985°F62°F99°F 202555°F 20170%
Jul 3084°F62°F96°F 202552°F 20010%
Jul 3184°F62°F92°F 200247°F 20010%

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 (EDT).

July 1
sunrise 5:12 AM, sunset 8:28 PM
July 31
sunrise 5:37 AM, sunset 8:08 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00275703 (Nashua Cwsu), public domain. Records: NOAA GHCN-Daily, station USW00004780, 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.