May weather forecastProspect, OR
May
Weather in May
May, the last month of the spring in Prospect, is a comfortable month, with an average temperature fluctuating between 63.1°F (17.3°C) and 38.1°F (3.4°C).Temperature
May witnesses a subtle temperature ascent, adjusting from a cool 54.3°F (12.4°C) in April to a refreshing 63.1°F (17.3°C). During May nights, Prospect documents a marked contrast from daily highs, with an average temperature of 38.1°F (3.4°C).Humidity
The average relative humidity in May is 74%.Rainfall
In May, the rain falls for 13.9 days. Throughout May, 1.73" (44mm) of precipitation is accumulated. In Prospect, during the entire year, the rain falls for 140 days and collects up to 23.78" (604mm) of precipitation.Snowfall
Months with snowfall in Prospect are January through May, November and December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Prospect aggregates 0.04" (1mm) of snow. In Prospect, during the entire year, snow falls for 25 days and aggregates up to 21.77" (553mm) of snow.Daylight
The average length of the day in May is 14h and 40min.On the first day of May, sunrise is at 6:02 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:41 pm PDT.
Sunshine
In May, the average sunshine is 10h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 during May translates into the following recommendations:
Take precautions - Protection against sun damage is advised. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Prospect, OR
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in May: 38.1°F
The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in May
Prospect, OR
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in May
Prospect, OR
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in May
Prospect, OR
- Average humidity in May: 74%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (60%).
Average rainfall in May
Prospect, OR
- Average rainfall in May: 1.73"
The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in May
Prospect, OR
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is July (3.8 days).
Average snowfall in May
Prospect, OR
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (6.77").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Prospect, OR
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Prospect, 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 6min).
- Average sunshine in May: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in May
Prospect, OR
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (10 days).
Average UV index in May
Prospect, 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
Prospect, OR
- Average cloud cover in May: 39
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Prospect, OR
- Average visibility in May: 5mi
The months with the highest visibility are July, August and September (6mi).
The month with the lowest visibility is December (4mi).
