May weather forecastGillette, WY
May
Weather in May
May carries the hallmark of a resplendent Gillette spring. The comfortable increase in temperatures, up to an average high of 62.2°F (16.8°C), complements the blooming landscapes. Daylight hours span over an impressive 14.8 hours, accentuating the allure of the city in daylight. The shift in weather conditions does come with a decline in snowfall, thereby making May a pleasant time for travel. The transition from the snowy landscapes of winter to the lush greens of spring is a remarkable spectacle exclusive to this month.Temperature
In Gillette, the average high-temperature in May rises, from a fresh 52.3°F (11.3°C) in April, to a comfortable 62.2°F (16.8°C). Gillette records a steady low-temperature average of 43.3°F (6.3°C) during May.Humidity
In May, the average relative humidity is 62%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.8 days and typically aggregates up to 3.11" (79mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows in Gillette. During 2.3 snowfall days, in May, Gillette aggregates 2.6" (66mm) of snow. Throughout the year, there are 50.5 snowfall days, and 19.53" (496mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 48min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:06 pm. On the last day of May, in Gillette, Wyoming, sunrise is at 5:21 am and sunset at 8:38 pm MDT.
Sunshine
The average sunshine in May is 10h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 5 in May leads to these recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Gillette, WY
- Average high temperature in May: 62.2°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in May: 43.3°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).
Average pressure in May
Gillette, WY
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Gillette, WY
- Average wind speed in May: 10.7mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (9.1mph).
Average humidity in May
Gillette, WY
- Average humidity in May: 62%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).
Average rainfall in May
Gillette, WY
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in May
Gillette, WY
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (1.5 days).
Average snowfall in May
Gillette, WY
- Average snowfall in May: 2.6"
The month with the highest snowfall is April (3.82").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Gillette, WY
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is February (9.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Gillette, WY
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 10h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in May
Gillette, WY
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in May
Gillette, 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, April, November and December (UV index 2).
Average cloud cover in May
Gillette, WY
- Average cloud cover in May: 35
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in May
Gillette, 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).
