Umatilla climate

Umatilla Weather in October

NOAA 1991-2020 normals for Mcnary Dam #2, 3.9 km from Umatilla

Average highs run from 71°F on October 1 to 58°F on October 31, and lows from 49°F to 39°F. Normal precipitation for the month is 0.74 in over about 9 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 Umatilla, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
64°F
Average low
44°F
Precipitation
0.74 in
Snowfall
0.1 in
Record high
88°FOct 6, 2014
Record low
7°FOct 31, 2002
Chance of a freeze
39%
Daylight
11 h 41 min to 10 h 08 min
Cloud cover
56%
Humidity
60%
Dew point
38°F
Wind
8.1 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 171°F49°F85°F 202429°F 200219%0%
Oct 271°F49°F84°F 202228°F 200219%0%
Oct 370°F48°F86°F 202228°F 199920%0%
Oct 470°F48°F87°F 202026°F 201221%0%
Oct 569°F48°F84°F 201425°F 201221%0%
Oct 669°F48°F88°F 201423°F 201222%0%
Oct 768°F47°F88°F 201425°F 201223%0%
Oct 868°F47°F84°F 202028°F 201223%0%
Oct 967°F47°F82°F 202027°F 201924%0%
Oct 1067°F46°F86°F 202222°F 201924%0%
Oct 1167°F46°F77°F 202219°F 200925%0%
Oct 1266°F46°F80°F 201520°F 200825%0%
Oct 1366°F45°F80°F 199924°F 200226%0%
Oct 1465°F45°F80°F 202425°F 200226%0%
Oct 1565°F45°F76°F 202326°F 200227%0%
Oct 1664°F44°F78°F 202021°F 199927%0%
Oct 1764°F44°F80°F 200322°F 199927%0%
Oct 1863°F43°F76°F 201427°F 199928%0%
Oct 1963°F43°F79°F 202323°F 199828%0%
Oct 2063°F43°F79°F 200323°F 199829%0%
Oct 2162°F42°F87°F 200326°F 199829%0%
Oct 2262°F42°F79°F 200323°F 200829%0%
Oct 2361°F42°F72°F 200725°F 200230%0%
Oct 2461°F41°F73°F 200720°F 200230%0%
Oct 2560°F41°F75°F 201920°F 200231%0%
Oct 2660°F41°F69°F 202419°F 200231%0%
Oct 2760°F40°F70°F 200319°F 200231%0%
Oct 2859°F40°F79°F 200322°F 201932%0%
Oct 2959°F40°F73°F 202012°F 201932%0%
Oct 3058°F39°F72°F 201510°F 201932%0%
Oct 3158°F39°F69°F 20157°F 200232%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Umatilla, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

October 1
sunrise 6:56 AM, sunset 6:37 PM
October 31
sunrise 7:37 AM, sunset 5:45 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00355392 (Mcnary Dam #2), public domain. Records: NOAA GHCN-Daily, station USW00004113, 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.