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Umatilla, OR Weather Forecast

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Umatilla, OR Weather Forecast

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Umatilla OR weather - Mostly Clear - 80°F
Mostly Clear
80°F
Updated 5:35 pm
Feels Like 74°F
Humidity 33%
Wind VRB 3 mph
Barometer  30.04 in
Dew Point 49°F
Umatilla OR weather - Mostly Clear - 27°C
Mostly Clear
27°C
Updated 5:35 pm
Feels Like 24°C
Humidity 33%
Wind VRB 5 km/h
Barometer  101.7 kPa
Dew Point 9°C
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Umatilla Weather Forecast

TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY
Umatilla, OR Weather - Tonight Clear Umatilla, OR Weather - Saturday Sunny Umatilla, OR Weather - Saturday Night Partly Cloudy Umatilla, OR Weather - Sunday Sunny Umatilla, OR Weather - Sunday Night Clear Umatilla, OR Weather - Monday Mostly Clear Umatilla, OR Weather - Tuesday Mostly Clear Umatilla, OR Weather - Wednesday Partly Cloudy Umatilla, OR Weather - Thursday Partly Cloudy Umatilla, OR Weather - Friday Partly Cloudy
Clear Sunny Partly Cloudy Sunny Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy
Lo: 53°FLo: 12°C Hi: 81°FHi: 27°C
 Lo: 53°FLo: 12°C Hi: 81°FHi: 27°C
 Lo: 57°FLo: 14°C Hi: 80°FHi: 27°C
Lo: 55°FLo: 13°C		 Hi: 80°FHi: 27°C
Lo: 55°FLo: 13°C		 Hi: 75°FHi: 24°C
Lo: 53°FLo: 12°C		 Hi: 75°FHi: 24°C
Lo: 53°FLo: 12°C		 Hi: 75°FHi: 24°C
Lo: 53°FLo: 12°C
POP = Probability of Precipitation.
Weather Outlook Updated: 302 PM PDT Fri Sep 18 2026 Umatilla, OR Weather - WeatherWorld.com

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Umatilla Forecast Discussion

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Issued: 433 PM PDT Fri Sep 18 2026

Key Messages

  • Isolated thunderstorm chances today.
  • Warmer and drier trend through the weekend.
  • Cooler through workweek, showers possible late in the week.

Discussion

... Current radar and visible satellite imagery shows light to moderate returns and building clouds over Wallowa, southern Union, and eastern Grant counties. This is in response to a slowly departing upper level low pressure system moving into southern Idaho this evening as an upper level ridge builds in its wake. The incoming high pres...