Island City climate

Island City Weather in August

NOAA 1991-2020 normals for La Grande, 3.6 km from Island City

Average highs run from 90°F on August 1 to 83°F on August 31, and lows from 56°F to 49°F. Normal precipitation for the month is 0.67 in over about 3 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 Island City, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
87°F
Average low
53°F
Precipitation
0.67 in
Record high
106°FAug 3, 2024
Record low
31°FAug 20, 2000
Chance of a freeze
1%
Days of 90°F or more
13.2
Daylight
14 h 42 min to 13 h 18 min
Cloud cover
35%
Humidity
49%
Dew point
44°F
Wind
5.8 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 190°F56°F105°F 202241°F 198711%0%
Aug 290°F55°F101°F 202440°F 198711%0%
Aug 389°F55°F106°F 202442°F 200211%0%
Aug 489°F55°F104°F 197840°F 198011%0%
Aug 589°F55°F102°F 198341°F 196911%0%
Aug 689°F55°F103°F 199038°F 196911%0%
Aug 789°F55°F101°F 197244°F 196911%0%
Aug 889°F55°F103°F 197240°F 200211%0%
Aug 989°F54°F103°F 202240°F 197011%0%
Aug 1089°F54°F106°F 201842°F 197011%0%
Aug 1188°F54°F103°F 199643°F 200711%0%
Aug 1288°F54°F100°F 197145°F 196610%0%
Aug 1388°F54°F101°F 200144°F 197410%0%
Aug 1488°F54°F104°F 199241°F 202010%0%
Aug 1588°F53°F101°F 200344°F 197010%0%
Aug 1687°F53°F105°F 202339°F 197610%0%
Aug 1787°F53°F106°F 202338°F 196910%0%
Aug 1887°F53°F105°F 202235°F 197810%0%
Aug 1987°F52°F101°F 196738°F 196910%0%
Aug 2086°F52°F102°F 196731°F 200010%0%
Aug 2186°F52°F99°F 197738°F 198510%0%
Aug 2286°F52°F103°F 202637°F 198510%0%
Aug 2386°F51°F101°F 196934°F 199210%0%
Aug 2485°F51°F99°F 196636°F 199210%0%
Aug 2585°F51°F101°F 196634°F 198010%0%
Aug 2685°F51°F98°F 199636°F 199310%0%
Aug 2784°F50°F97°F 200136°F 197610%0%
Aug 2884°F50°F102°F 198632°F 198010%0%
Aug 2984°F50°F98°F 199838°F 202410%0%
Aug 3083°F50°F100°F 201741°F 198010%0%
Aug 3183°F49°F100°F 202236°F 200610%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Island City, in percent, and of at least 0.1 inch of snowfall.02.557.51012.51102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:37 AM, sunset 8:19 PM
August 31
sunrise 6:13 AM, sunset 7:31 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00354622 (La Grande), public domain. Records: NOAA GHCN-Daily, station USC00354622, 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.