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
As Ralston steps into January, the average high-temperature holds at a still subzero cold 30.9°F (-0.6°C), hinting at a minor fluctuation from the prior month. Ralston observes an average low-temperature of 16.5°F (-8.6°C) during January nights.Humidity
The most humid month is January, with an average relative humidity of 76%.Rainfall
January is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.31" (8mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In January, it is snowing for 9.3 days. Throughout January, 2.05" (52mm) of snow is accumulated. Throughout the year, there are 52.1 snowfall days, and 16.97" (431mm) of snow is accumulated.Daylight
In Ralston, the average length of the day in January is 9h and 16min.On the first day of January, sunrise is at 7:52 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:22 pm MST.
Sunshine
January, February and December, with an average of 6.7h of sunshine, are months with the least 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 of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 2 in January translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January in Ralston?
What are the months with the least sunshine?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index reading in January in Ralston?
Average temperature in January
Ralston, WY
- Average high temperature in January: 30.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in January: 16.5°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (15.6°F).
Average pressure in January
Ralston, WY
- Average pressure in January: 30.16"Hg
The months with the highest atmospheric pressure are January and December (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Ralston, WY
- Average wind speed in January: 6.3mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Ralston, WY
- Average humidity in January: 76%
The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in January
Ralston, WY
- Average rainfall in January: 0.31"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in January
Ralston, WY
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is December (4.9 days).
Average snowfall in January
Ralston, WY
- Average snowfall in January: 2.05"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Ralston, WY
- Average snowfall days in January: 9.3 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Ralston, 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 month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 42min).
Average sunshine days in January
Ralston, WY
- Average sunshine days in January: 20 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in January
Ralston, WY
- Average UV index in January: 2
The months with the highest UV index are June and July (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
Ralston, WY
- Average cloud cover in January: 28
The month with the most cloud cover is February (Cloud cover 32).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in January
Ralston, 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).
Ralston, Wyoming, USA
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