Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January's advent in Gillette, Wyoming, presents an average high-temperature of a still subzero cold 30.4°F (-0.9°C), indicating a slight variation from the conditions of the previous month. January's nights in Gillette observe an average temperature of 17.6°F (-8°C).Humidity
With an average relative humidity of 78%, January is the most humid month in Gillette, Wyoming.Rainfall
January is the month with the least rainfall. Rain falls for 2 days and accumulates 0.39" (10mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Gillette, in January, during 7 snowfall days, 2.01" (51mm) of snow is typically accumulated. In Gillette, during the entire year, snow falls for 50.5 days and aggregates up to 19.53" (496mm) of snow.Daylight
In Gillette, Wyoming, the average length of the day in January is 9h and 19min.On the first day of January in Gillette, Wyoming, sunrise is at 7:37 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:09 pm MST.
Sunshine
In January, the average sunshine in Gillette is 5.8h.UV index
January, February, April, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Gillette. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 2 in January leads to these recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Gillette in January?
What is the most humid month in Gillette?
What is the average humidity in January in Gillette?
What is the driest month in Gillette?
How much does it rain in Gillette in January?
How much does it snow in Gillette in January?
What is the average length of the day in January in Gillette?
What time are sunrise and sunset in January in Gillette?
How long on average sun shines in January in Gillette?
What are the months with the lowest UV index in Gillette?
What is the UV index intensity in January in Gillette?
Average temperature in January
Gillette, WY
- Average high temperature in January: 30.4°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 January: 17.6°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 January
Gillette, WY
- Average pressure in January: 30.13"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 January
Gillette, WY
- Average wind speed in January: 10.9mph
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 January
Gillette, WY
- Average humidity in January: 78%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).
Average rainfall in January
Gillette, WY
- Average rainfall in January: 0.39"
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 January
Gillette, WY
- Average rainfall days in January: 2 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 January
Gillette, WY
- Average snowfall in January: 2.01"
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 January
Gillette, WY
- Average snowfall days in January: 7 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 January /
Average sunshine in January
Gillette, WY
- Average daylight in January: 9h and 2min
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 January: 5h and 5min
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 January
Gillette, WY
- Average sunshine days in January: 21.5 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 January
Gillette, WY
- Average UV index in January: 2
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 January
Gillette, WY
- Average cloud cover in January: 41
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 January
Gillette, WY
- Average visibility in January: 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).
Gillette, Wyoming, USA
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