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, Casper's average high-temperature sees a rise, moving from April's fresh 50.7°F (10.4°C) to a refreshing 61.3°F (16.3°C). Throughout May, the temperature in Casper tends to fall to a consistent average low of 41.2°F (5.1°C).Humidity
In May, the average relative humidity is 55%.Rainfall
May is the month with the most rainfall. Rain falls for 14.1 days and accumulates 1.77" (45mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows in Casper. During 2.1 snowfall days, in May, Casper aggregates 2.83" (72mm) of snow. In Casper, during the entire year, snow falls for 61.5 days and aggregates up to 32.13" (816mm) of snow.Daylight
In Casper, the average length of the day in May is 14h and 40min.On the first day of the month, sunrise is at 5:58 am and sunset at 8:06 pm. On the last day of May, in Casper, sunrise is at 5:29 am and sunset at 8:36 pm MDT.
Sunshine
The average sunshine in May in Casper is 10.8h.UV index
In Casper, Wyoming, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. To guard against the harmful effects of the Sun, minimize exposure during midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Casper?
What is the average humidity in May in Casper?
What is the rainiest month in Casper?
How many days does it rain in May in Casper?
What is the last month it snows in Casper?
How many hours of daylight does Casper have in May?
What time are sunrise and sunset in May in Casper?
How long on average sun shines in May in Casper?
How high is the UV index in May in Casper?
Average temperature in May
Casper, WY
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in May: 41.2°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).
Average pressure in May
Casper, WY
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Casper, WY
- Average wind speed in May: 9.8mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).
Average humidity in May
Casper, WY
- Average humidity in May: 55%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (37%).
Average rainfall in May
Casper, WY
- Average rainfall in May: 1.77"
The wettest month (with the highest rainfall) is May (1.77").
The driest months (with the least rainfall) are January, August and September (0.43").
Average rainfall days in May
Casper, WY
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in May
Casper, WY
- Average snowfall in May: 2.83"
The month with the highest snowfall is November (5.47").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Casper, WY
- Average snowfall days in May: 2.1 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Casper, WY
- 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 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).
Average sunshine days in May
Casper, WY
- Average sunshine days in May: 11.9 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in May
Casper, WY
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in May
Casper, WY
- Average cloud cover in May: 28
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Casper, WY
- 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).
Casper, Wyoming, USA
Weather forecast for your location
2. Allow the app to use your location