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
Greybull experiences a subtle adjustment in high-temperatures to a still subzero cold 29.7°F (-1.3°C) with the onset of January, maintaining near parity with December's 28.8°F (-1.8°C). Nighttime temperature lowers to an average of 13.8°F (-10.1°C) in January.Humidity
With an average relative humidity of 78%, January is the most humid month.Rainfall
In Greybull, in January, during 7.9 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Greybull, during the entire year, the rain falls for 103.2 days and collects up to 5.71" (145mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Greybull. In January, in Greybull, it is snowing for 8.8 days. Throughout January, 1.85" (47mm) of snow is accumulated. In Greybull, Wyoming, during the entire year, snow falls for 41.4 days and aggregates up to 9.41" (239mm) of snow.Daylight
In Greybull, the average length of the day in January is 9h and 18min.On the first day of January in Greybull, sunrise is at 7:48 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:19 pm MST.
Sunshine
The month with the least sunshine in Greybull is January, with an average of 6.7h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Greybull in January?
What is the most humid month in Greybull?
What is the average humidity in January in Greybull?
How many days does it rain in January in Greybull?
How much does it snow in Greybull in January?
What is the average length of the day in January in Greybull?
What time are sunrise and sunset in January in Greybull?
What is the month with the least sunshine in Greybull?
How many hours of sunshine does Greybull have in January?
When is the lowest UV index in Greybull?
What is the UV index reading in January in Greybull?
Average temperature in January
Greybull, WY
- Average high temperature in January: 29.7°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.8°F).
- Average low temperature in January: 13.8°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in January
Greybull, WY
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Greybull, WY
- Average wind speed in January: 6mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest months (with the lowest average wind speed) are January and August (6mph).
Average humidity in January
Greybull, WY
- Average humidity in January: 78%
The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in January
Greybull, WY
- Average rainfall in January: 0.28"
The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is December (0.2").
Average rainfall days in January
Greybull, WY
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is December (6.5 days).
Average snowfall in January
Greybull, WY
- Average snowfall in January: 1.85"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Greybull, WY
- Average snowfall days in January: 8.8 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Greybull, 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: 6h and 4min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days in January
Greybull, WY
- Average sunshine days in January: 19.9 days
The month with the most sunshine days is December (20.9 days).
The months with the least sunshine days are April and June (12.5 days).
Average UV index in January
Greybull, 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, March, November and December (UV index 2).
Average cloud cover in January
Greybull, WY
- Average cloud cover in January: 27
The month with the most cloud cover is February (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in January
Greybull, 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).
Greybull, Wyoming, USA
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