Umatilla, OR Weather

Umatilla, OR climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.

The warmest month of the year is July with an average maximum temperature of 85.90 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 28.60 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 26 degrees Fahrenheit, and fairly limited during winter with an average difference of 13 degrees Fahrenheit.

The annual average precipitation at Umatilla is 8.13 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is November with an average rainfall of 1.18 Inches.

Weather Data

Current Conditions

(Updated: 8:53 PM PDT SAT MAR 20 2010)

Fair, 45°F	Humidity: 58%	Dewpoint: 31°F
	Wind Speed: W 4.6 MPH (4 KT)	Heat Index: 45°F
	Barometer: 30.00 in.	Wind Chill: 43°F

Weather Forecast

(Generated: 8:30 PM PDT SAT MAR 20 2010)

		Tonight: Partly cloudy. Not as cool. Lows 37 to 42. Light wind becoming southwest 5 to 15 mph overnight.
	Lo: 40°F
	Hi: 58°F	Sunday: Mostly cloudy. A slight chance of rain in the morning... Then a chance of rain in the afternoon. Highs 55 to 60. Southwest wind 5 to 15 mph. Gusts around 30 mph in the afternoon. Chance of precipitation 40 percent.
	Lo: 39°F
	Hi: 60°F	Monday: Mostly cloudy with a 20 percent chance of showers. Breezy. Highs 57 to 62. West wind 15 to 25 mph. Gusts around 35 mph in the afternoon.
	Lo: 33°F
	Hi: 62°F	Tuesday: Mostly sunny. Highs 59 to 64.
	Lo: 34°F
	Hi: 67°F	Wednesday: Partly cloudy. Highs 64 to 69.
	Lo: 41°F
	Hi: 57°F	Thursday: Partly cloudy. Cooler. A slight chance of rain. Highs 54 to 59.
	Lo: 37°F
	Hi: 61°F	Friday: Partly cloudy. A slight chance of rain. Highs 58 to 63.
	Lo: 37°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Crescent Moon	Civil Twilight: 6:30 AM PDT	Sunrise: 6:59 AM PDT
		Sunset: 7:10 PM PDT	Civil Twilight: 7:40 PM PDT

Normal Climate

Normal Temperatures

(MCNARY DAM Weather station, 2.17 miles from Umatilla)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	39.5	45.9	55.6	63.4	71.1	78.0	85.9	85.8	76.4	63.7	49.0	40.5	62.9
Mean °F	34.1	38.4	45.5	52.1	59.5	66.1	73.0	73.0	64.3	53.3	42.4	35.3	53.1
Min °F	28.6	30.8	35.4	40.8	47.8	54.1	60.1	60.1	52.2	42.8	35.8	30.0	43.2

Normal Precipitation