May weather forecast
Sunriver, OR

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Weather in May

May, the last month of the spring in Sunriver, is a mild month, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 40.5°F (4.7°C).

Temperature

May's arrival coincides with a temperature rise, moving from April's cool 50.5°F (10.3°C) to a mild 60.6°F (15.9°C). In the month of May, Sunriver's average low-temperature falls to an icy 40.5°F (4.7°C).

Humidity

The average relative humidity in May is 61%.

Rainfall

May is the month with the most rainfall. Rain falls for 14 days and accumulates 1.5" (38mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 1.8 snowfall days, in May, Sunriver aggregates 0.31" (8mm) of snow. In Sunriver, during the entire year, snow falls for 44.9 days and aggregates up to 24.57" (624mm) of snow.

Daylight

In May, the average length of the day is 14h and 46min.
On the first day of the month, sunrise is at 5:56 am and sunset at 8:09 pm. On the last day of May, sunrise is at 5:26 am and sunset at 8:40 pm PDT.

Sunshine

In Sunriver, the average sunshine in May is 10.9h.

UV index

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 4 during May leads to these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

Frequently asked questions

What is the usual temperature for Sunriver in May?

May temperatures vary between a high-temperature of 60.6°F (15.9°C) and a low-temperature of 40.5°F (4.7°C).

What is the average humidity in May?

The average relative humidity in May is 61%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 14 days and accumulates 1.5" (38mm) of precipitation.

How much does it rain in Sunriver in May?

In Sunriver, Oregon, in May, during 14 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

What is the last month it snows in Sunriver?

May is the last month it regularly snows. During 1.8 snowfall days, in May, Sunriver aggregates 0.31" (8mm) of snow.

How many hours of daylight does Sunriver have in May?

The average day length in May is 14h and 46min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 5:56 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 8:40 pm PDT.

How long on average sun shines in May?

The average sunshine duration in May is 10.9h.

What is the UV index reading in May?

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Sunriver, OR

Average temperature in May - Sunriver, OR
  • Average high temperature in May: 60.6°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (35.8°F).

  • Average low temperature in May: 40.5°F

The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (24.6°F).

Average pressure in May
Sunriver, OR

Average pressure in May - Sunriver, OR
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).

Average wind speed in May
Sunriver, OR

Average wind speed in May - Sunriver, OR
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in May
Sunriver, OR

Average humidity in May - Sunriver, OR
  • Average humidity in May: 61%

The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is July (48%).

Average rainfall in May
Sunriver, OR

Average rainfall in May - Sunriver, OR
  • Average rainfall in May: 1.5"

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.35").

Average rainfall days in May
Sunriver, OR

Average rainfall days in May - Sunriver, OR
  • Average rainfall days in May: 14 days

The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is July (4.8 days).

Average snowfall in May
Sunriver, OR

Average snowfall in May - Sunriver, OR
  • Average snowfall in May: 0.31"

The month with the highest snowfall is February (6.65").
The months with the least snowfall are June, July and August (0").

Average snowfall days in May
Sunriver, OR

Average snowfall days in May - Sunriver, OR
  • Average snowfall days in May: 1.8 days

The month with the highest number of snowfall days is March (9.5 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in May /
Average sunshine in May
Sunriver, OR

Average daylight in May / Average sunshine in May - Sunriver, OR
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in May
Sunriver, OR

Average sunshine days in May - Sunriver, OR
  • Average sunshine days in May: 14.1 days

The month with the most sunshine days is July (23.6 days).
The month with the least sunshine days is April (12.8 days).

Average UV index in May
Sunriver, OR

Average UV index in May - Sunriver, 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, March, November and December (UV index 2).

Average cloud cover in May
Sunriver, OR

Average cloud cover in May - Sunriver, OR
  • Average cloud cover in May: 30

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).

Average visibility in May
Sunriver, OR

Average visibility in May - Sunriver, OR
  • Average visibility in May: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).

Sunriver, Oregon, USA

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