Umatilla climate

Umatilla Weather in April

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

Average highs run from 59°F on April 1 to 68°F on April 30, and lows from 38°F to 45°F. Normal precipitation for the month is 0.70 in over about 8 wet days.

April 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

April at a glance

Average high
63°F
Average low
42°F
Precipitation
0.70 in
Record high
90°FApr 30, 1998
Record low
16°FApr 1, 2008
Chance of a freeze
40%
Daylight
12 h 49 min to 14 h 18 min
Cloud cover
62%
Humidity
58%
Dew point
36°F
Wind
8.9 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
Apr 159°F38°F78°F 200016°F 200832%0%
Apr 259°F39°F80°F 202419°F 199932%0%
Apr 360°F39°F78°F 200021°F 200232%0%
Apr 460°F39°F74°F 200424°F 200231%0%
Apr 560°F39°F71°F 202623°F 200131%0%
Apr 660°F40°F78°F 202624°F 199931%0%
Apr 760°F40°F78°F 201424°F 201130%0%
Apr 861°F40°F80°F 201625°F 201130%0%
Apr 961°F40°F82°F 201625°F 200130%0%
Apr 1061°F40°F79°F 202025°F 201029%0%
Apr 1161°F41°F79°F 200022°F 202129%0%
Apr 1262°F41°F83°F 200021°F 202128%0%
Apr 1362°F41°F81°F 200822°F 202028%0%
Apr 1462°F41°F80°F 202424°F 201428%0%
Apr 1563°F41°F75°F 202526°F 199927%0%
Apr 1663°F42°F76°F 202126°F 201327%0%
Apr 1763°F42°F80°F 202120°F 201327%0%
Apr 1863°F42°F86°F 202127°F 202426%0%
Apr 1964°F42°F85°F 201626°F 201126%0%
Apr 2064°F43°F86°F 201627°F 200726%0%
Apr 2164°F43°F86°F 200926°F 200825%0%
Apr 2265°F43°F83°F 200527°F 200625%0%
Apr 2365°F43°F88°F 201224°F 201325%0%
Apr 2465°F43°F80°F 199922°F 200924%0%
Apr 2566°F44°F82°F 200127°F 202624%0%
Apr 2666°F44°F84°F 201325°F 200824%0%
Apr 2767°F44°F83°F 201825°F 199923%0%
Apr 2867°F44°F83°F 202330°F 200223%0%
Apr 2967°F44°F88°F 202328°F 201923%0%
Apr 3068°F45°F90°F 199829°F 201923%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).

April 1
sunrise 6:37 AM, sunset 7:26 PM
April 30
sunrise 5:46 AM, sunset 8:04 PM

Every day of April: 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.