Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
With the onset of May, Trail's average high-temperature experiences a slight rise, moving from April's mild 56.8°F (13.8°C) to a still refreshing 64.9°F (18.3°C). May nights are characterized by a notable drop from daytime highs, with an average low-temperature of 39.2°F (4°C).Humidity
In May, the average relative humidity is 73%.Rainfall
In Trail, in May, during 12.7 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In Trail, Oregon, during the entire year, the rain falls for 131.5 days and collects up to 20.87" (530mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Trail aggregates 0.04" (1mm) of snow. Throughout the year, there are 26.3 snowfall days, and 21.18" (538mm) of snow is accumulated.Daylight
In Trail, the average length of the day in May is 14h and 39min.On the first day of May, sunrise is at 6:04 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:42 pm PDT.
Sunshine
The average sunshine in May is 10.2h.UV index
In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index, 4 during May, leads to the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Enhance your sun protection with tightly woven, yet airy clothing. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much does it rain in Trail in May?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Trail have in May?
What is the UV index reading in May?
Average temperature in May
Trail, OR
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is August (83.8°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in May: 39.2°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (30.4°F).
Average pressure in May
Trail, OR
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in May
Trail, OR
- Average wind speed in May: 3.9mph
The windiest months (with the highest average wind speed) are January and March (4.3mph).
The calmest months (with the lowest average wind speed) are September and October (3.5mph).
Average humidity in May
Trail, OR
- Average humidity in May: 73%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (60%).
Average rainfall in May
Trail, OR
- Average rainfall in May: 1.46"
The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
Trail, OR
- Average rainfall days in May: 12.7 days
The month with the highest number of rainy days is March (18 days).
The month with the least rainy days is August (3.1 days).
Average snowfall in May
Trail, OR
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Trail, OR
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Trail, OR
- Average daylight in May: 14h and 4min
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 1min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
Trail, OR
- Average sunshine days in May: 16.1 days
The months with the most sunshine days are July and August (25.9 days).
The month with the least sunshine days is March (10.7 days).
Average UV index in May
Trail, 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
Trail, OR
- Average cloud cover in May: 37
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in May
Trail, OR
- Average visibility in May: 5mi
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Trail, Oregon, USA
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