Deer Isle climate

Deer Isle Weather in July

NOAA 1991-2020 normals for Belfast, 31.3 km from Deer Isle

Average highs run from 75°F on July 1 to 78°F on July 31, and lows from 55°F to 57°F. Normal precipitation for the month is 3.17 in over about 9 wet days.

July day by day

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

Normal daily high and low temperature at Deer Isle, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
77°F
Average low
57°F
Precipitation
3.17 in
Record high
95°FJul 2, 2026
Record low
44°FJul 5, 2021
Chance of a freeze
0%
Days of 90°F or more
0.7
Daylight
15 h 27 min to 14 h 39 min
Cloud cover
62%
Humidity
89%
Dew point
58°F
Wind
7.8 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
Jul 175°F55°F85°F 201852°F 201130%0%
Jul 276°F55°F95°F 202652°F 202430%0%
Jul 376°F55°F93°F 202649°F 201629%0%
Jul 476°F55°F94°F 201850°F 202129%0%
Jul 576°F56°F91°F 201344°F 202129%0%
Jul 676°F56°F88°F 201353°F 201429%0%
Jul 776°F56°F90°F 201349°F 201829%0%
Jul 877°F56°F84°F 202450°F 201929%0%
Jul 977°F56°F90°F 202651°F 201529%0%
Jul 1077°F56°F86°F 202447°F 202229%0%
Jul 1177°F57°F85°F 201552°F 201929%0%
Jul 1277°F57°F87°F 201552°F 201628%0%
Jul 1377°F57°F86°F 201251°F 202128%0%
Jul 1477°F57°F90°F 201249°F 201828%0%
Jul 1577°F57°F93°F 201349°F 201128%0%
Jul 1677°F57°F92°F 201344°F 202028%0%
Jul 1777°F57°F89°F 201148°F 201528%0%
Jul 1877°F57°F87°F 202449°F 202628%0%
Jul 1978°F57°F87°F 202250°F 201828%0%
Jul 2078°F57°F92°F 201949°F 202628%0%
Jul 2178°F57°F90°F 201951°F 201228%0%
Jul 2278°F57°F95°F 201148°F 202528%0%
Jul 2378°F57°F88°F 201150°F 202528%0%
Jul 2478°F57°F85°F 202049°F 201728%0%
Jul 2578°F57°F88°F 202050°F 201428%0%
Jul 2678°F57°F84°F 202045°F 202628%0%
Jul 2778°F57°F88°F 202047°F 202627%0%
Jul 2878°F57°F89°F 202047°F 202627%0%
Jul 2978°F57°F92°F 202548°F 202127%0%
Jul 3078°F57°F86°F 201950°F 201727%0%
Jul 3178°F57°F85°F 202051°F 201727%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Deer Isle, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

July 1
sunrise 4:55 AM, sunset 8:22 PM
July 31
sunrise 5:21 AM, sunset 8:00 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00170480 (Belfast), public domain. Records: NOAA GHCN-Daily, station USC00172443, 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.