May weather forecastAltamont, OR
May
Weather in May
The last month of the spring, May, is a refreshing month in Altamont, Oregon, with temperature in the range of an average high of 61.7°F (16.5°C) and an average low of 37.9°F (3.3°C).Temperature
As May begins, there is an increase in the average high-temperature, moving from a fresh 52.5°F (11.4°C) in April to a comfortable 61.7°F (16.5°C). Altamont's nights during May are marked by a pronounced drop from daytime temperatures, experiencing an average low of 37.9°F (3.3°C).Humidity
In May, the average relative humidity is 64%.Rainfall
In Altamont, in May, it is raining for 12 days, with typically 1.34" (34mm) of accumulated precipitation. In Altamont, during the entire year, the rain falls for 100.4 days and collects up to 13.15" (334mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Altamont, in May, during 2.2 snowfall days, 0.55" (14mm) of snow is typically accumulated. Throughout the year, there are 70.5 snowfall days, and 42.52" (1080mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 37min.On the first day of the month, sunrise is at 6:01 am and sunset at 8:06 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:36 pm PDT.
Sunshine
The average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 4 during May translates into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Altamont, OR
- Average high temperature in May: 61.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (36.9°F).
- Average low temperature in May: 37.9°F
The month with the highest average low temperature is July (48.6°F).
The coldest month (with the lowest average low temperature) is December (25.2°F).
Average pressure in May
Altamont, OR
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in May
Altamont, OR
- Average wind speed in May: 5.9mph
The windiest months (with the highest average wind speed) are March and April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in May
Altamont, OR
- Average humidity in May: 64%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (49%).
Average rainfall in May
Altamont, OR
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is December (2.09").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in May
Altamont, OR
- Average rainfall days in May: 12 days
The month with the highest number of rainy days is April (13.1 days).
The month with the least rainy days is August (3.6 days).
Average snowfall in May
Altamont, OR
- Average snowfall in May: 0.55"
The month with the highest snowfall is December (10.63").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Altamont, OR
- Average snowfall days in May: 2.2 days
The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Altamont, OR
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 10h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in May
Altamont, OR
- Average sunshine days in May: 17.4 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is March (10.6 days).
Average UV index in May
Altamont, OR
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in May
Altamont, OR
- Average cloud cover in May: 29
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in May
Altamont, OR
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
