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
May comes with an increase, with the average high-temperature moving from a fresh 54.1°F (12.3°C) in April to an enjoyable 64.4°F (18°C). During May nights, Saint John records an average temperature of 43.9°F (6.6°C).Humidity
The average relative humidity in May is 47%.Rainfall
In Saint John, during May, the rain falls for 13.3 days and regularly aggregates up to 1.69" (43mm) of precipitation. In Saint John, during the entire year, the rain falls for 120.7 days and collects up to 18.39" (467mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Saint John aggregates 0.51" (13mm) of snow. In Saint John, Utah, during the entire year, snow falls for 68.4 days and aggregates up to 55.94" (1421mm) of snow.Daylight
The average length of the day in May is 14h and 26min.On the first day of the month, sunrise is at 6:27 am and sunset at 8:25 pm. On the last day of May, sunrise is at 6:01 am and sunset at 8:53 pm MDT.
Sunshine
In Saint John, the average sunshine in May is 11h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 during May translates into the following guidance:
Heed the precautions - Suggestions to avoid sunburn are made. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days does it rain in May in Saint John?
What is the last month it snows?
How many hours of daylight does Saint John have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Saint John have in May?
How high is the UV index in May?
Average temperature in May
Saint John, UT
- Average high temperature in May: 64.4°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in May: 43.9°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Saint John, UT
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Saint John, UT
- Average wind speed in May: 6.6mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is January (5.3mph).
Average humidity in May
Saint John, UT
- Average humidity in May: 47%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (33%).
Average rainfall in May
Saint John, UT
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is April (2.09").
The driest month (with the least rainfall) is June (0.79").
Average rainfall days in May
Saint John, UT
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is May (13.3 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in May
Saint John, UT
- Average snowfall in May: 0.51"
The months with the highest snowfall are January and December (12.99").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Saint John, UT
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Saint John, UT
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 11h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in May
Saint John, UT
- Average sunshine days in May: 14.9 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in May
Saint John, UT
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Saint John, UT
- Average cloud cover in May: 24
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in May
Saint John, UT
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Saint John, Utah, USA
Weather forecast for your location
2. Allow the app to use your location