January weather forecastWinterset, IA

January
Weather in January
Winterset, Iowa greets the new year with a chilly embrace, as winter deepens. The average low temperature in January dips to 15.3°F (-9.3°C), while the high hovers around 28.8°F (-1.8°C). The city witnesses longer nights, a high relative humidity of 82%, and increased snowfall, enhancing the beauty of its icy landscape. Sporadic sunrays poke through the cloudy skies while brisk winds make their presence felt. Despite the chilly air, Winterset exudes serenity during this winter month.Temperature
With an average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 15.3°F (-9.3°C), January is the coldest month in Winterset.Humidity
January, February and June, with an average relative humidity of 82%, are the most humid months.Rainfall
The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.91" (23mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Winterset. In Winterset, during January, snow falls for 9.1 days and regularly aggregates up to 4.29" (109mm) of snow. Throughout the year, in Winterset, there are 35 snowfall days, and 15.04" (382mm) of snow is accumulated.Daylight
In Winterset, the average length of the day in January is 9h and 36min.On the first day of January in Winterset, sunrise is at 7:41 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:30 pm CST.
Sunshine
With an average of 4.4h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index in Winterset are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 2 during January leads to these instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Winterset, IA
- Average high temperature in January: 28.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in January: 15.3°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in January
Winterset, IA
- 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 (29.88"Hg).
Average wind speed in January
Winterset, IA
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in January
Winterset, IA
- Average humidity in January: 82%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Winterset, IA
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in January
Winterset, IA
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in January
Winterset, IA
- Average snowfall in January: 4.29"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Winterset, IA
- Average snowfall days in January: 9.1 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Winterset, IA
- Average daylight in January: 9h and 36min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in January
Winterset, IA
- Average sunshine days in January: 19.1 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in January
Winterset, 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, October, November and December (UV index 2).
Average cloud cover in January
Winterset, IA
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in January
Winterset, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).





