January weather forecastPreston, IA
January
Weather in January
January, the same as December, in Preston, Iowa, is another subzero cold winter month, with temperature in the range of an average low of 13.3°F (-10.4°C) and an average high of 25.9°F (-3.4°C).Temperature
In Preston, the month of January is known for its lowest average temperatures, reaching a high of 25.9°F (-3.4°C) and a low of 13.3°F (-10.4°C).Humidity
The most humid month in Preston is January, with an average relative humidity of 86%.Rainfall
January is the month with the least rainfall in Preston, Iowa. Rain falls for 5.4 days and accumulates 1.34" (34mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 11 days and typically aggregates up to 5.2" (132mm) of snow.Daylight
In January, the average length of the day in Preston, Iowa, is 9h and 32min.On the first day of the month, sunrise is at 7:29 am and sunset at 4:40 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:14 pm CST.
Sunshine
January and February, with an average of 3.9h of sunshine, are months with the least sunshine in Preston.UV index
The months with the lowest UV index in Preston are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In January, the maximum UV index of 1 suggests these recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Preston, IA
- Average high temperature in January: 25.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in January: 13.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in January
Preston, IA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Preston, IA
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in January
Preston, IA
- Average humidity in January: 86%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Preston, IA
- Average rainfall in January: 1.34"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in January
Preston, IA
- Average rainfall days in January: 5.4 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in January
Preston, IA
- Average snowfall in January: 5.2"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Preston, IA
- Average snowfall days in January: 11 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Preston, 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: 3h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in January
Preston, IA
- Average sunshine days in January: 16.5 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in January
Preston, IA
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Preston, IA
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in January
Preston, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
