Union County climate

Union County Weather in October

NOAA 1991-2020 normals for La Grande, 5.2 km from Union County

Average highs run from 70°F on October 1 to 55°F on October 31, and lows from 40°F to 32°F. Normal precipitation for the month is 1.58 in over about 8 wet days.

October day by day

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

Normal daily high and low temperature at Union County, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
62°F
Average low
36°F
Precipitation
1.58 in
Record high
89°FOct 2, 2001
Record low
9°FOct 30, 2019
Chance of a freeze
100%
Daylight
11 h 42 min to 10 h 11 min
Cloud cover
60%
Humidity
64%
Dew point
33°F
Wind
6.7 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
Oct 170°F40°F88°F 199229°F 198519%0%
Oct 270°F40°F89°F 200127°F 201919%0%
Oct 369°F39°F87°F 198724°F 201919%0%
Oct 469°F39°F85°F 197027°F 201220%0%
Oct 568°F39°F86°F 198826°F 196920%0%
Oct 668°F38°F87°F 198020°F 197421%0%
Oct 767°F38°F87°F 198026°F 197421%0%
Oct 867°F38°F85°F 202222°F 196821%0%
Oct 966°F37°F85°F 196518°F 198522%0%
Oct 1066°F37°F86°F 201518°F 201922%0%
Oct 1165°F37°F82°F 198822°F 201923%0%
Oct 1265°F36°F87°F 199120°F 200223%0%
Oct 1364°F36°F81°F 202220°F 196924%0%
Oct 1463°F36°F82°F 202218°F 196924%0%
Oct 1563°F36°F78°F 202223°F 196925%0%
Oct 1662°F35°F82°F 199122°F 197025%0%
Oct 1762°F35°F81°F 202222°F 199625%0%
Oct 1861°F35°F79°F 202224°F 199126%0%
Oct 1961°F35°F79°F 201522°F 197626%0%
Oct 2060°F34°F79°F 202321°F 198426%0%
Oct 2160°F34°F78°F 200319°F 198427%0%
Oct 2259°F34°F81°F 200319°F 198427%0%
Oct 2359°F34°F82°F 200319°F 202027%1%
Oct 2458°F34°F78°F 199318°F 202028%1%
Oct 2558°F33°F72°F 199219°F 197828%1%
Oct 2657°F33°F74°F 198818°F 202028%1%
Oct 2757°F33°F72°F 196518°F 197029%1%
Oct 2856°F33°F76°F 200318°F 197129%1%
Oct 2956°F33°F73°F 200313°F 197129%1%
Oct 3055°F33°F71°F 19659°F 201930%1%
Oct 3155°F32°F75°F 196511°F 200230%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Union County, 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 (PDT).

October 1
sunrise 6:50 AM, sunset 6:32 PM
October 31
sunrise 7:30 AM, sunset 5:41 PM

Every day of October: 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.