January weather forecastDayton, IA
January
Weather in January
January, like December, is another subzero cold winter month in Dayton, Iowa, with an average temperature varying between 13.5°F (-10.3°C) and 26.8°F (-2.9°C).Temperature
With its high average temperature of 26.8°F (-2.9°C) and a low of 13.5°F (-10.3°C), January is regarded as the coldest month.Humidity
The most humid month is January, with an average relative humidity of 84%.Rainfall
January is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.91" (23mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 10.3 days and accumulates 4.29" (109mm) of snow.Daylight
In Dayton, the average length of the day in January is 9h and 31min.On the first day of January, sunrise is at 7:45 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:28 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4h of sunshine.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During January, 2 as the daily maximum UV index converts into the following advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Stay sun-safe with clothing that is both closely woven and worn loosely. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Dayton, IA
- Average high temperature in January: 26.8°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in January: 13.5°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in January
Dayton, 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
Dayton, IA
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in January
Dayton, IA
- Average humidity in January: 84%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
Dayton, IA
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in January
Dayton, IA
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in January
Dayton, IA
- Average snowfall in January: 4.29"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Dayton, IA
- Average snowfall days in January: 10.3 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Dayton, IA
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 4h
The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 4h).
Average sunshine days in January
Dayton, IA
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in January
Dayton, IA
- 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, October, November and December (UV index 2).
Average cloud cover in January
Dayton, IA
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in January
Dayton, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
