Skip to content
VSWeather

Umatilla, OR weather and climate

Umatilla County, OR · population 7,531 · about 328 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Umatilla's own coordinates.

The year at a glance

Sunny days
216
clear or partly cloudy, per year
Precipitation
10 in
per year
Wet days
64
rain or snow per year
Snowfall
5 in
per year
Hot days
35
above 90 °F
Freezing nights
78
at or below 32 °F
Humidity
58%
average relative
Average temperature
54 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
406080JanMarMayJulSepNovDaily high, Jan: 41 °FDaily high, Feb: 47 °FDaily high, Mar: 56 °FDaily high, Apr: 64 °FDaily high, May: 73 °FDaily high, Jun: 80 °FDaily high, Jul: 89 °FDaily high, Aug: 88 °FDaily high, Sep: 78 °FDaily high, Oct: 64 °FDaily high, Nov: 51 °FDaily high, Dec: 41 °FDaily low, Jan: 29 °FDaily low, Feb: 31 °FDaily low, Mar: 35 °FDaily low, Apr: 41 °FDaily low, May: 48 °FDaily low, Jun: 54 °FDaily low, Jul: 60 °FDaily low, Aug: 60 °FDaily low, Sep: 53 °FDaily low, Oct: 43 °FDaily low, Nov: 35 °FDaily low, Dec: 30 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high414756647380898878645141
Daily low293135414854606053433530

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.00.51.01.5JanMarMayJulSepNovUmatilla, Jan: 1.3 inUmatilla, Feb: 1.0 inUmatilla, Mar: 1.0 inUmatilla, Apr: 0.7 inUmatilla, May: 0.8 inUmatilla, Jun: 0.5 inUmatilla, Jul: 0.2 inUmatilla, Aug: 0.2 inUmatilla, Sep: 0.3 inUmatilla, Oct: 0.9 inUmatilla, Nov: 1.2 inUmatilla, Dec: 1.4 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Umatilla1.31.01.00.70.80.50.20.20.30.91.21.4

Monthly sunny days

Days each month with clear or partly cloudy skies.

0102030JanMarMayJulSepNovUmatilla, Jan: 9 daysUmatilla, Feb: 12 daysUmatilla, Mar: 14 daysUmatilla, Apr: 16 daysUmatilla, May: 19 daysUmatilla, Jun: 23 daysUmatilla, Jul: 29 daysUmatilla, Aug: 28 daysUmatilla, Sep: 25 daysUmatilla, Oct: 20 daysUmatilla, Nov: 12 daysUmatilla, Dec: 9 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Umatilla9121416192329282520129

Compare Umatilla with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Oregon city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).