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 beginning of May signals a rise in the average high-temperature, moving from a fresh 54.1°F (12.3°C) in April to a comfortable 66.6°F (19.2°C). In May, the average low-temperature in Trail City records at a frosty 48.2°F (9°C) during the nights.Humidity
In May, the average relative humidity in Trail City is 62%.Rainfall
In Trail City, in May, it is raining for 13.2 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 89.4 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Trail City aggregates 0.12" (3mm) of snow. In Trail City, during the entire year, snow falls for 49.4 days and aggregates up to 19.09" (485mm) of snow.Daylight
In May, the average length of the day in Trail City is 14h and 55min.On the first day of May in Trail City, sunrise is at 5:29 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 4:57 am and sunset at 8:23 pm MDT.
Sunshine
In Trail City, the average sunshine in May is 9.3h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 5 in May transforms into the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To cut down UV radiation exposure by about half, sport a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Trail City in May?
What is the average humidity in May in Trail City?
How much does it rain in Trail City in May?
What is the last month it snows in Trail City?
What is the average length of the day in May in Trail City?
When is the sunrise / sunset in May in Trail City?
How many hours of sunshine does Trail City have in May?
How high is the UV index in May in Trail City?
Average temperature in May
Trail City, SD
- Average high temperature in May: 66.6°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).
- Average low temperature in May: 48.2°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in May
Trail City, SD
- Average pressure in May: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Trail City, SD
- Average wind speed in May: 10.8mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).
Average humidity in May
Trail City, SD
- Average humidity in May: 62%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).
Average rainfall in May
Trail City, SD
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in May
Trail City, SD
- Average rainfall days in May: 13.2 days
The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in May
Trail City, SD
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Trail City, SD
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Trail City, SD
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Trail City, SD
- Average sunshine days in May: 15.5 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).
Average UV index in May
Trail City, SD
- 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 and December (UV index 1).
Average cloud cover in May
Trail City, SD
- Average cloud cover in May: 36
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility in May
Trail City, SD
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Trail City, South Dakota, USA
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