May

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Umatilla County Weather May

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Temperatures trend during May in Umatilla County

See the weather trend as well as the moving average line

May weather in Umatilla County day by day

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April June

Date	Weather	Temperatures	Rain	UV
May 1	Sunny	24° /6°	0 mm	7
May 2	Sunny	26° /9°	0 mm	7
May 3	Patchy rain possible	21° /10°	0.3 mm	6
May 4	Partly cloudy	21° /7°	0 mm	6
May 5	Sunny	23° /8°	0 mm	7
May 6	Sunny	24° /10°	0 mm	7
May 7	Sunny	24° /10°	0 mm	8
May 8	Partly cloudy	20° /9°	0.1 mm	7
May 9	Overcast	23° /8°	0 mm	7
May 10	Overcast	24° /12°	0 mm	7
May 11	Moderate or heavy rain shower	20° /9°	3 mm	6
May 12	Patchy rain possible	21° /7°	0.2 mm	6
May 13	Patchy rain possible	17° /8°	2.4 mm	5
May 14	Overcast	17° /7°	0.1 mm	6
May 15	Cloudy	17° /6°	0.1 mm	6
May 16	Overcast	15° /7°	0.8 mm	4
May 17	Moderate or heavy rain shower	17° /6°	6.8 mm	6
May 18	Patchy rain possible	17° /5°	0.2 mm	6
May 19	Moderate rain at times	19° /5°	0.6 mm	6
May 20	Patchy rain possible	19° /8°	0.3 mm	7
May 21	Partly cloudy	17° /6°	0 mm	5
May 22	Overcast	23° /9°	0.3 mm	6
May 23	Partly cloudy	24° /10°	0 mm	8
May 24	Cloudy	26° /11°	0 mm	8
May 25	Sunny	27° /12°	0 mm	8
May 26	Cloudy	17° /9°	2.5 mm	4
May 27	Partly cloudy	23° /7°	0 mm	5
May 28	Overcast	29° /13°	1.8 mm	8
May 29	Cloudy	21° /12°	0 mm	7
May 30	Partly cloudy	24° /8°	0 mm	8
May 31	Partly cloudy	27° /11°	0 mm	8
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Important Notice

Our weather forecast for Umatilla County in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Umatilla County forecast closer to your planned date for the most up-to-date weather information.

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Umatilla County in May - FAQ

What are the expected maximum and minimum temperatures in Umatilla County during May?

Enjoy moderate daytime temperatures of up to 22° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Umatilla County during May?

Expect minimal rainfall in Umatilla County during May, with a total of 17.8 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.

What are the typical wind conditions in Umatilla County during May?

The average wind speed in Umatilla County during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Umatilla County

Explore the daily rainfall trends and prepare for Umatilla Countys May weather 💧

Typically, Umatilla County has 4 rainy days in May with a total of 17.8 mm of rainfall.

UV exposure in Umatilla County during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

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Where is Umatilla County?

Get accurate weather forecasts for Umatilla County, located at latitude 45.672 and longitude -118.789. Stay updated with localized weather information tailored for Umatilla County.

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Mon.	Tue.	Wed.	Thu.	Fri.	Sat.	Sun.
					1 24°	2 26°
3 21°	4 21°	5 23°	6 24°	7 24°	8 20°	9 23°
10 24°	11 20°	12 21°	13 17°	14 17°	15 17°	16 15°
17 17°	18 17°	19 19°	20 19°	21 17°	22 23°	23 24°
24 26°	25 27°	26 17°	27 23°	28 29°	29 21°	30 24°
31 27°