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
May's arrival in Roseburg brings a slight change in high-temperatures, adjusting from a moderate 57.2°F (14°C) in April to an enjoyable 64.9°F (18.3°C). With a significant daily temperature differential, Roseburg's nighttime temperature in May falls to an average of 39°F (3.9°C).Humidity
The average relative humidity in May is 79%.Rainfall
In Roseburg, in May, during 9.4 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 105 rainfall days, and 9.57" (243mm) of precipitation is accumulated.Snowfall
In Roseburg, Oregon, snow does not fall in April through October.Daylight
In Roseburg, the average length of the day in May is 14h and 42min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:15 pm. On the last day of May, in Roseburg, sunrise is at 5:36 am and sunset at 8:46 pm PDT.
Sunshine
In Roseburg, the average sunshine in May is 8.5h.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 unprotected exposure to Sun's UV rays for the average person.Note: In May, the maximum UV index of 4 suggests this advice:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What are May temperatures in Roseburg?
What is the average humidity in May in Roseburg?
How many days does it rain in May in Roseburg?
When it does not snow in Roseburg?
How many hours of daylight does Roseburg have in May?
When is the sunrise / sunset in May in Roseburg?
How many hours of sunshine does Roseburg have in May?
How high is the UV index in May in Roseburg?
Average temperature in May
Roseburg, OR
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (45.9°F).
- Average low temperature in May: 39°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure in May
Roseburg, OR
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in May
Roseburg, OR
- Average wind speed in May: 3.7mph
The windiest months (with the highest average wind speed) are January and March (3.9mph).
The calmest months (with the lowest average wind speed) are September and October (3.2mph).
Average humidity in May
Roseburg, OR
- Average humidity in May: 79%
The months with the highest relative humidity are January, February and December (87%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in May
Roseburg, OR
- Average rainfall in May: 0.75"
The wettest month (with the highest rainfall) is December (1.46").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
Roseburg, OR
- Average rainfall days in May: 9.4 days
The month with the highest number of rainy days is March (13.5 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in May
Roseburg, OR
- Average snowfall in May: 0"
The month with the highest snowfall is November (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Roseburg, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.5 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
Roseburg, OR
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in May
Roseburg, OR
- Average sunshine days in May: 18.9 days
The month with the most sunshine days is August (25.1 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in May
Roseburg, 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
Roseburg, OR
- Average cloud cover in May: 50
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in May
Roseburg, OR
- Average visibility in May: 4mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
Roseburg, Oregon, USA
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