January weather forecastRiverton, IA
January
Weather in January
January, like December, is a freezing cold winter month in Riverton, Iowa, with an average temperature fluctuating between 31.3°F (-0.4°C) and 18°F (-7.8°C).Temperature
The coldest period tends to be January, when average temperatures fluctuate between a high of 31.3°F (-0.4°C) and a low of 18°F (-7.8°C).Humidity
January and July, with an average relative humidity of 79%, are the most humid months in Riverton.Rainfall
In Riverton, in January, it is raining for 4.4 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 125.6 rainfall days, and 26.14" (664mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall in Riverton is January, when snow falls for 8.6 days and typically aggregates up to 3.11" (79mm) of snow.Daylight
The average length of the day in January is 9h and 40min.On the first day of the month, sunrise is at 7:46 am and sunset at 5:05 pm. On the last day of January, sunrise is at 7:33 am and sunset at 5:38 pm CST.
Sunshine
With an average of 4.7h of sunshine, January has the least sunshine of the year in Riverton.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during January translates into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Riverton, IA
- Average high temperature in January: 31.3°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in January: 18°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in January
Riverton, IA
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Riverton, IA
- Average wind speed in January: 9.8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in January
Riverton, IA
- Average humidity in January: 79%
The months with the highest relative humidity are January and July (79%).
The month with the lowest relative humidity is October (67%).
Average rainfall in January
Riverton, IA
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in January
Riverton, IA
- Average rainfall days in January: 4.4 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in January
Riverton, IA
- Average snowfall in January: 3.11"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Riverton, IA
- Average snowfall days in January: 8.6 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Riverton, IA
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in January
Riverton, IA
- Average sunshine days in January: 19 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in January
Riverton, IA
- 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, November and December (UV index 2).
Average cloud cover in January
Riverton, IA
- Average cloud cover in January: 48
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in January
Riverton, IA
- 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).
