May weather forecastPrineville, OR
May
Weather in May
The last month of the spring, May, is an enjoyable month in Prineville, Oregon, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 40.6°F (4.8°C).Temperature
May signals a shift in the average high-temperature, moving from April's cool 53.1°F (11.7°C) to an enjoyable 62.4°F (16.9°C). The average low-temperature of 40.6°F (4.8°C) in May represents a significant drop from the daily high.Humidity
In Prineville, the average relative humidity in May is 59%.Rainfall
In May, the rain falls for 14.1 days. Throughout May, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 138.8 rainfall days, and 14.69" (373mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows in Prineville. During 0.3 snowfall days, in May, Prineville aggregates 0.08" (2mm) of snow. In Prineville, during the entire year, snow falls for 53.7 days and aggregates up to 25" (635mm) of snow.Daylight
The average length of the day in May in Prineville is 14h and 49min.On the first day of May, sunrise is at 5:52 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:39 pm PDT.
Sunshine
In Prineville, the average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In May, the maximum UV index of 4 suggests these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Prineville, OR
- Average high temperature in May: 62.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in May: 40.6°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (25°F).
Average pressure in May
Prineville, OR
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in May
Prineville, OR
- Average wind speed in May: 6.6mph
The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in May
Prineville, OR
- Average humidity in May: 59%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in May
Prineville, OR
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is December (1.89").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in May
Prineville, OR
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is July (4.2 days).
Average snowfall in May
Prineville, OR
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Prineville, OR
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is December (13.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Prineville, OR
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 10h and 54min
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 18min).
Average sunshine days in May
Prineville, OR
- Average sunshine days in May: 13.7 days
The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in May
Prineville, 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
Prineville, OR
- Average cloud cover in May: 30
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in May
Prineville, 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).
