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
The onset of May introduces a subtle rise in the average high-temperature, nudging from a pleasant 71.1°F (21.7°C) in April to a moderately hot 77.7°F (25.4°C). May nights experience a consistent temperature drop to a refreshing 60.1°F (15.6°C).Humidity
The most humid month in Washington is May, with an average relative humidity of 76%.Rainfall
May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 3.54" (90mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May is 14h and 1min.On the first day of the month, sunrise is at 6:38 am and sunset at 8:15 pm. On the last day of May, sunrise is at 6:17 am and sunset at 8:38 pm CDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
In Washington, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 6 during May translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the most humid month?
What is the average humidity in May?
What is the wettest month in Washington?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Washington have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Washington, OK
- Average high temperature in May: 77.7°F
The warmest months (with the highest average high temperature) are July and August (93°F).
The month with the lowest average high temperature is January (49.5°F).
- Average low temperature in May: 60.1°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in May
Washington, OK
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Washington, OK
- Average wind speed in May: 10.2mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in May
Washington, OK
- Average humidity in May: 76%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (60%).
Average rainfall in May
Washington, OK
- Average rainfall in May: 3.54"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is November (0.98").
Average rainfall days in May
Washington, OK
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in May
Washington, OK
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Washington, OK
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.3 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
Washington, OK
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in May
Washington, OK
- Average sunshine days in May: 14.4 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (14.4 days).
Average UV index in May
Washington, OK
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Washington, OK
- Average cloud cover in May: 34
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in May
Washington, OK
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Washington, Oklahoma, USA
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