Guernsey climate

Guernsey Weather in August

NOAA 1991-2020 normals for Guernsey 2NW, 2.5 km from Guernsey

Average highs run from 90°F on August 1 to 84°F on August 31, and lows from 61°F to 53°F. Normal precipitation for the month is 1.20 in.

August day by day

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

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

August at a glance

Average high
88°F
Average low
58°F
Precipitation
1.20 in
Record high
99°FAug 26, 2015
Record low
41°FAug 23, 2015
Chance of a freeze
0%
Days of 90°F or more
14.3
Daylight
14 h 26 min to 13 h 11 min
Cloud cover
48%
Humidity
46%
Dew point
47°F
Wind
9.2 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 190°F61°F96°F 201255°F 20140%
Aug 290°F61°F98°F 201258°F 20140%
Aug 390°F61°F97°F 201655°F 20140%
Aug 490°F60°F92°F 201351°F 20170%
Aug 589°F60°F97°F 201253°F 20120%
Aug 689°F60°F97°F 201254°F 20170%
Aug 789°F60°F93°F 201255°F 20170%
Aug 889°F60°F97°F 201255°F 20170%
Aug 989°F60°F94°F 201657°F 20130%
Aug 1089°F59°F95°F 201256°F 20130%
Aug 1189°F59°F89°F 201449°F 20170%
Aug 1289°F59°F96°F 201552°F 20160%
Aug 1388°F59°F96°F 201455°F 20130%
Aug 1488°F58°F97°F 201554°F 20130%
Aug 1588°F58°F97°F 201558°F 20160%
Aug 1688°F58°F92°F 201353°F 20160%
Aug 1788°F58°F95°F 201349°F 20120%
Aug 1887°F57°F94°F 201351°F 20150%
Aug 1987°F57°F93°F 201348°F 20120%
Aug 2087°F57°F98°F 201342°F 20160%
Aug 2187°F56°F93°F 201545°F 20160%
Aug 2287°F56°F95°F 201650°F 20170%
Aug 2386°F56°F93°F 201741°F 20150%
Aug 2486°F55°F94°F 201248°F 20140%
Aug 2586°F55°F97°F 201550°F 20140%
Aug 2686°F55°F99°F 201550°F 20160%
Aug 2785°F54°F99°F 201250°F 20160%
Aug 2885°F54°F99°F 201250°F 20160%
Aug 2985°F54°F98°F 201253°F 20150%
Aug 3084°F54°F99°F 201553°F 20140%
Aug 3184°F53°F91°F 201248°F 20140%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Guernsey, 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 (MDT).

August 1
sunrise 5:52 AM, sunset 8:18 PM
August 31
sunrise 6:23 AM, sunset 7:34 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00484131 (Guernsey 2NW), public domain. Records: NOAA GHCN-Daily, station USC00484131, 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.