Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As Selma transitions into May, the average high-temperature is observed to slightly rise from a moderate 57.9°F (14.4°C) in April to a still refreshing 66.7°F (19.3°C). Selma's May nights cool down significantly from the day's heat, to an average low-temperature of 39.7°F (4.3°C).Humidity
In Selma, the average relative humidity in May is 74%.Rainfall
In Selma, during May, the rain falls for 11.8 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, in Selma, there are 135.3 rainfall days, and 23.54" (598mm) of precipitation is accumulated.Snowfall
In Selma, snow does not fall in May through October.Daylight
The average length of the day in May is 14h and 37min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:14 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:44 pm PDT.
Sunshine
In Selma, the average sunshine in May is 9.9h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In May, a daily UV index of 4 turns into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Selma, OR
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in May: 39.7°F
The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).
Average pressure in May
Selma, OR
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in May
Selma, OR
- Average wind speed in May: 3.7mph
The windiest month (with the highest average wind speed) is March (4mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in May
Selma, OR
- Average humidity in May: 74%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (63%).
Average rainfall in May
Selma, OR
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in May
Selma, OR
- Average rainfall days in May: 11.8 days
The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in May
Selma, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Selma, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Selma, OR
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in May
Selma, OR
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is March (10.8 days).
Average UV index in May
Selma, OR
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Selma, OR
- Average cloud cover in May: 40
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in May
Selma, OR
- Average visibility in May: 5mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Selma, Oregon, USA
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