May weather forecastCorvallis, MT
May
Weather in May
May, the last month of the spring in Corvallis, is a refreshing month, with an average temperature varying between 56.7°F (13.7°C) and 33.4°F (0.8°C).Temperature
Noticing a change, the average high-temperature during May moves from April's frosty 43.5°F (6.4°C) to a mild 56.7°F (13.7°C). Corvallis registers a significant drop in temperature in May, with average nighttime lows of 33.4°F (0.8°C).Humidity
The average relative humidity in May in Corvallis, Montana, is 71%.Rainfall
In May, in Corvallis, the rain falls for 19.5 days. Throughout May, 1.97" (50mm) of precipitation is accumulated. In Corvallis, during the entire year, the rain falls for 163.6 days and collects up to 20.83" (529mm) of precipitation.Snowfall
Months with snowfall in Corvallis are January through May, September through December. May is the last month it regularly snows in Corvallis. During 2.3 snowfall days, in May, Corvallis aggregates 0.67" (17mm) of snow. In Corvallis, during the entire year, snow falls for 101.1 days and aggregates up to 59.17" (1503mm) of snow.Daylight
In Corvallis, Montana, the average length of the day in May is 15h and 1min.On the first day of May, sunrise is at 6:21 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 9:20 pm MDT.
Sunshine
In May, the average sunshine in Corvallis, Montana, is 10.4h.UV index
In Corvallis, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 during May translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Corvallis, MT
- Average high temperature in May: 56.7°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in May: 33.4°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in May
Corvallis, MT
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Corvallis, MT
- Average wind speed in May: 4.5mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in May
Corvallis, MT
- Average humidity in May: 71%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in May
Corvallis, MT
- Average rainfall in May: 1.97"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in May
Corvallis, MT
- Average rainfall days in May: 19.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in May
Corvallis, MT
- Average snowfall in May: 0.67"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Corvallis, MT
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Corvallis, MT
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 10h and 24min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in May
Corvallis, MT
- Average sunshine days in May: 8.5 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in May
Corvallis, MT
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in May
Corvallis, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Corvallis, MT
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
