January weather forecastJackson, WY
January
Weather in January
January in Jackson, Wyoming, exhibits the chilling grip of winter. The brisk winds from the west bring temperatures plummeting below the freezing point. With peaks hardly reaching 23.5°F (-4.7°C), even the afternoons can feel quite cold. Snow blankets the city, transforming the landscape into a winter wonderland. The streets bear a mesmerizing look; however, visibility gets limited due to the dense veil of snowfall.Temperature
The dawn of January sees an average high-temperature of a still freezing cold 23.5°F (-4.7°C), subtly contrasting with December's 21.9°F (-5.6°C). During January, Jackson witnesses a consistent average low-temperature of 4.8°F (-15.1°C).Humidity
The average relative humidity in January in Jackson is 93%.Rainfall
In January, the rain falls for 2.9 days. Throughout January, 3.11" (79mm) of precipitation is accumulated. Throughout the year, in Jackson, there are 103 rainfall days, and 29.84" (758mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In Jackson, during January, snow falls for 22.1 days and regularly aggregates up to 25.91" (658mm) of snow. Throughout the year, there are 173.6 snowfall days, and 181.26" (4604mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 24min.On the first day of January, sunrise is at 7:55 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:32 pm MST.
Sunshine
In Jackson, the average sunshine in January is 3.6h.UV index
January through April, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In January, a daily UV index of 1 turns into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Jackson, WY
- Average high temperature in January: 23.5°F
The warmest month (with the highest average high temperature) is July (73.4°F).
The month with the lowest average high temperature is December (21.9°F).
- Average low temperature in January: 4.8°F
The month with the highest average low temperature is July (43.5°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).
Average pressure in January
Jackson, WY
- Average pressure in January: 30.27"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Jackson, WY
- Average wind speed in January: 4.4mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (4.3mph).
Average humidity in January
Jackson, WY
- Average humidity in January: 93%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall in January
Jackson, WY
- Average rainfall in January: 3.11"
The wettest month (with the highest rainfall) is February (3.54").
The driest month (with the least rainfall) is August (1.34").
Average rainfall days in January
Jackson, WY
- Average rainfall days in January: 2.9 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in January
Jackson, WY
- Average snowfall in January: 25.91"
The month with the highest snowfall is February (29.33").
The month with the least snowfall is August (0.12").
Average snowfall days in January
Jackson, WY
- Average snowfall days in January: 22.1 days
The month with the highest number of snowfall days is March (24.8 days).
The month with the least snowfall days is July (0.4 days).
Average daylight in January /
Average sunshine in January
Jackson, WY
- Average daylight in January: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 3h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in January
Jackson, WY
- Average sunshine days in January: 9.6 days
The month with the most sunshine days is July (15.6 days).
The month with the least sunshine days is April (3.8 days).
Average UV index in January
Jackson, 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
Jackson, WY
- Average cloud cover in January: 65
The month with the most cloud cover is February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in January
Jackson, 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).
