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
The start of May is characterized by an increase in the average high-temperature, transitioning from a cool 53.1°F (11.7°C) in April to a refreshing 63.1°F (17.3°C). During the month of May, the nighttime temperature falls to an average of 45.1°F (7.3°C).Humidity
In Riverview Colony, the average relative humidity in May is 54%.Rainfall
In Riverview Colony, in May, it is raining for 14.9 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 113.8 rainfall days, and 11.89" (302mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, Riverview Colony aggregates 0.87" (22mm) of snow. In Riverview Colony, during the entire year, snow falls for 65.1 days and aggregates up to 24.69" (627mm) of snow.Daylight
In May, the average length of the day in Riverview Colony, Montana, is 15h and 13min.On the first day of the month, sunrise is at 6:03 am and sunset at 8:38 pm. On the last day of May, sunrise is at 5:28 am and sunset at 9:15 pm MDT.
Sunshine
In Riverview Colony, the average sunshine in May is 10.3h.UV index
The average daily maximum UV index in May in Riverview Colony is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 4 in May translates into these instructions:
Put precautions into practice - Guidance to elude sunburn is provided. It's recommended to limit sun exposure when its radiation is at its peak during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Riverview Colony?
What is the average humidity in May in Riverview Colony?
How many days does it rain in May in Riverview Colony?
What is the last month it snows in Riverview Colony?
How many hours of daylight does Riverview Colony have in May?
When are sunrise and sunset in May in Riverview Colony?
How many hours of sunshine does Riverview Colony have in May?
What is the UV index intensity in May in Riverview Colony?
Average temperature in May
Riverview Colony, MT
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (28.2°F).
- Average low temperature in May: 45.1°F
The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is February (16.3°F).
Average pressure in May
Riverview Colony, MT
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Riverview Colony, MT
- Average wind speed in May: 9.9mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in May
Riverview Colony, MT
- Average humidity in May: 54%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in May
Riverview Colony, MT
- Average rainfall in May: 1.73"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in May
Riverview Colony, MT
- Average rainfall days in May: 14.9 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (5 days).
Average snowfall in May
Riverview Colony, MT
- Average snowfall in May: 0.87"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Riverview Colony, MT
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Riverview Colony, MT
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 10h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days in May
Riverview Colony, MT
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is September (19.5 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in May
Riverview Colony, MT
- 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, October, November and December (UV index 2).
Average cloud cover in May
Riverview Colony, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in May
Riverview Colony, MT
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Riverview Colony, Montana, USA
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