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 coming of May brings a minor shift in Williams's weather, with average high-temperatures adjusting from April's refreshing 56.1°F (13.4°C) to an enjoyable 64.6°F (18.1°C). Nightly readings in May display a noticeable downturn from daily highs in Williams, with the average low-temperature registering a cold 39.4°F (4.1°C).Humidity
The average relative humidity in May is 73%.Rainfall
In Williams, Oregon, in May, it is raining for 10.9 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, in Williams, there are 92.5 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Williams. May is the last month it regularly snows. During 0.3 snowfall days, in May, Williams aggregates 0.08" (2mm) of snow. Throughout the year, in Williams, there are 31 snowfall days, and 23.39" (594mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 37min.On the first day of May, sunrise is at 6:07 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:42 pm PDT.
Sunshine
In Williams, the average sunshine in May is 10h.UV index
In Williams, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In May, the maximum UV index of 4 suggests these recommendations:
Take necessary precautions - Defending against sun damage is advocated. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
What is the temperature in May in Williams?
What is the average humidity in May in Williams?
How many days does it rain in May in Williams?
What is the last month it snows in Williams?
What is the average length of the day in May in Williams?
When is the sunrise / sunset in May in Williams?
How many hours of sunshine does Williams have in May?
How high is the UV index in May in Williams?
Average temperature in May
Williams, OR
- Average high temperature in May: 64.6°F
The warmest month (with the highest average high temperature) is August (84.4°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in May: 39.4°F
The months with the highest average low temperature are July and August (49.5°F).
The coldest month (with the lowest average low temperature) is December (28.9°F).
Average pressure in May
Williams, OR
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in May
Williams, OR
- Average wind speed in May: 3.8mph
The windiest month (with the highest average wind speed) is March (4.3mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in May
Williams, OR
- Average humidity in May: 73%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is August (60%).
Average rainfall in May
Williams, OR
- Average rainfall in May: 1.14"
The wettest month (with the highest rainfall) is January (2.01").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in May
Williams, OR
- Average rainfall days in May: 10.9 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in May
Williams, OR
- Average snowfall in May: 0.08"
The month with the highest snowfall is December (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Williams, OR
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Williams, 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 12min).
- Average sunshine in May: 10h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 0min).
Average sunshine days in May
Williams, OR
- Average sunshine days in May: 18.8 days
The months with the most sunshine days are July and August (25.3 days).
The month with the least sunshine days is March (15 days).
Average UV index in May
Williams, 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
Williams, OR
- Average cloud cover in May: 41
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Williams, OR
- Average visibility in May: 5mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Williams, Oregon, USA
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