United StatesAverage weather for Umatilla in May
It's hot in May in Umatilla with an average temperature of 31°C. Temperatures this month range from a low of 29°C to a high of 33°C. At night, you can expect temperatures between 18°C and 23°C.
Start of May
The month of May starts in Umatilla with hot temps, averaging around 31°C during the day and nights around 20°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers.
Mid May
By mid-May, daytime temps rise to around 32°C, with nights around 22°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of May
By the end of May, the average daytime temperature in Umatilla is around 33°C, while nighttime temps are about 23°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In May, there is an average of 114 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Umatilla in May |
New York | ||
|---|---|---|---|
 Average temperature |
31°C | 22°C | |
 Max. temperature |
33°C | 28°C | |
| Min. temperature |
29°C | -5°C | |
 Total precipitation |
114 mm | 105 mm | |
| Rainy days |
9 days | 14 days | |
April
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is May a good time to visit Umatilla?
Looking for sun? May isn’t a good month to be in Umatilla. The temperature is nice, but there’s too much chance of rain.
The hurricane season in Umatilla runs from June to November.
Temperature records
With 36°C in 2020, Umatilla reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 21°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 11°C to a highest value of 26°C.
Check out the climate of Umatilla for all months and discover the best travel time
Daily Temperature in May in Umatilla
This chart shows the average daily high and low temperatures in May for Umatilla, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in Umatilla
The chart below shows the average daily precipitation in May for Umatilla, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 9 days of precipitation in Umatilla.
Daily UV index in May in Umatilla
This chart shows the average daily UV index in May in Umatilla, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in Umatilla over the years
This chart shows the average temperature in May in Umatilla, measured in degrees Celsius, over the past few years.
Total precipitation in May in Umatilla over the years
This chart shows the average precipitation in May in Umatilla, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in May for Umatilla
Click on any day in May to get detailed info about the usual weather on that day in Umatilla. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Umatilla
Have you been to Umatilla in May?
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Average weather in Umatilla by month
Click on a month below to see detailed weather info for Umatilla. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
