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 arrival of May brings a temperature shift, with the average high-temperature escalating from a frosty 44.6°F (7°C) in April to a refreshing 56.7°F (13.7°C). May witnesses an average nighttime temperature of 35.4°F (1.9°C).Humidity
In Altamont, the average relative humidity in May is 58%.Rainfall
The months with the most rainfall are April and May, with an average 1.38" (35mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Altamont, during May, snow falls for 5.8 days and regularly aggregates up to 3.11" (79mm) of snow. Throughout the year, there are 99.3 snowfall days, and 56.22" (1428mm) of snow is accumulated.Daylight
In Altamont, the average length of the day in May is 14h and 31min.On the first day of May, sunrise is at 6:19 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:49 pm MDT.
Sunshine
In May, the average sunshine in Altamont is 11.1h.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 rays for average individuals.Note: The maximum UV index, 4 during May, leads to the following recommendations:
Exercise prevention - Warding off sunburn is urged. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May?
How much does it snow in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Altamont, WY
- Average high temperature in May: 56.7°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.4°F).
- Average low temperature in May: 35.4°F
The month with the highest average low temperature is July (51.6°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in May
Altamont, WY
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Altamont, WY
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in May
Altamont, WY
- Average humidity in May: 58%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).
Average rainfall in May
Altamont, WY
- Average rainfall in May: 1.38"
The wettest months (with the highest rainfall) are April and May (1.38").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in May
Altamont, WY
- Average rainfall days in May: 11.9 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in May
Altamont, WY
- Average snowfall in May: 3.11"
The month with the highest snowfall is March (10").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Altamont, WY
- Average snowfall days in May: 5.8 days
The month with the highest number of snowfall days is February (16.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Altamont, WY
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 11h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in May
Altamont, WY
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is June (19.5 days).
The month with the least sunshine days is April (10.8 days).
Average UV index in May
Altamont, WY
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in May
Altamont, WY
- Average cloud cover in May: 23
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in May
Altamont, WY
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Altamont, Wyoming, USA
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