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 weather records an average high-temperature of a still freezing cold 21.9°F (-5.6°C), showing little deviation from December. An average minimum temperature of 6.1°F (-14.4°C) is recorded during the month of January.Humidity
The average relative humidity in January in Mammoth is 94%.Rainfall
In Mammoth, in January, during 2.2 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Mammoth, during the entire year, the rain falls for 109.2 days and collects up to 23.15" (588mm) of precipitation.Snowfall
Months with snowfall are January through July, September through December. In January, in Mammoth, it is snowing for 22.8 days. Throughout January, 17.36" (441mm) of snow is accumulated. Throughout the year, there are 159.3 snowfall days, and 120.47" (3060mm) of snow is accumulated.Daylight
In January, the average length of the day in Mammoth, Wyoming, is 9h and 15min.On the first day of the month, sunrise is at 8:00 am and sunset at 4:51 pm. On the last day of January, in Mammoth, Wyoming, sunrise is at 7:43 am and sunset at 5:28 pm MST.
Sunshine
The months with the least sunshine in Mammoth are January, February and December, with an average of 3.3h of sunshine.UV index
The months with the lowest UV index in Mammoth, Wyoming, are January through April, October through December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Mammoth?
What is the average humidity in January in Mammoth?
How many days does it rain in January in Mammoth?
How much does it snow in Mammoth in January?
What is the average length of the day in January in Mammoth?
When are sunrise and sunset in January in Mammoth?
What are the months with the least sunshine in Mammoth?
How many hours of sunshine does Mammoth have in January?
When is the lowest UV index in Mammoth?
How high is the UV index in January in Mammoth?
Average temperature in January
Mammoth, WY
- Average high temperature in January: 21.9°F
The warmest month (with the highest average high temperature) is July (72.9°F).
The month with the lowest average high temperature is December (20.1°F).
- Average low temperature in January: 6.1°F
The month with the highest average low temperature is August (43.7°F).
The coldest month (with the lowest average low temperature) is December (4.8°F).
Average pressure in January
Mammoth, WY
- Average pressure in January: 30.24"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Mammoth, WY
- Average wind speed in January: 6.2mph
The windiest month (with the highest average wind speed) is June (6.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in January
Mammoth, WY
- Average humidity in January: 94%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is August (50%).
Average rainfall in January
Mammoth, WY
- Average rainfall in January: 2.09"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in January
Mammoth, WY
- Average rainfall days in January: 2.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (2.2 days).
Average snowfall in January
Mammoth, WY
- Average snowfall in January: 17.36"
The month with the highest snowfall is February (17.83").
The month with the least snowfall is August (0").
Average snowfall days in January
Mammoth, WY
- Average snowfall days in January: 22.8 days
The month with the highest number of snowfall days is March (24.4 days).
The months with the least snowfall days are July and August (0.2 days).
Average daylight in January /
Average sunshine in January
Mammoth, WY
- Average daylight in January: 9h and 1min
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 January: 3h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 18min).
Average sunshine days in January
Mammoth, WY
- Average sunshine days in January: 8.6 days
The months with the most sunshine days are July and September (14.7 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in January
Mammoth, WY
- Average UV index in January: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in January
Mammoth, WY
- Average cloud cover in January: 71
The month with the most cloud cover is February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in January
Mammoth, WY
- Average visibility in January: 3mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (3mi).
Mammoth, Wyoming, USA
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