May weather forecastRoseburg, OR
May
Weather in May
May is characterized by a warm and dry spell in Roseburg. The declining rainfall - now down to an average of 0.75" (19mm) - ushers in the perfect season for outdoor exploration. Sunshine hours increase substantially, and the UV index also begins to rise. This period is typified by clear skies and warm days as spring transitions into summer. As such, May is an excellent time for engaging in various recreational activities in Roseburg.Temperature
Roseburg perceives a slight temperature ascent during May, with average high-temperatures adjusting from a moderate 57.2°F (14°C) in April to a still refreshing 64.9°F (18.3°C). Marked by a significant drop from the daytime highs, Roseburg's average low-temperature in May stands at a cold 39°F (3.9°C).Humidity
The average relative humidity in May is 79%.Rainfall
In Roseburg, during May, the rain falls for 9.4 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 105 rainfall days, and 9.57" (243mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
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, 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
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 4 during May, leads to the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 42min
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 30min
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).
