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
The coldest period is January, when temperatures fluctuate between an average high of 26.8°F (-2.9°C) and a low of 14.4°F (-9.8°C).Humidity
The most humid month is January, with an average relative humidity of 85%.Rainfall
January and February are months with the least rain when the rain falls for 5.6 days and typically aggregates up to 1.34" (34mm) of rain.Snowfall
January through April, October through December are months with snowfall. January is the month with the most snowfall in Princeton. Snow falls for 12.3 days and accumulates 4.8" (122mm) of snow.Daylight
In January, the average length of the day is 9h and 34min.On the first day of January in Princeton, sunrise is at 7:28 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:15 pm CST.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year.UV index
The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum high daily UV index of 1 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. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January?
What is the most humid month?
What is the average humidity in January?
What is the driest month in Princeton?
How much does it rain in January?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Princeton have in January?
When is the lowest UV index in Princeton?
What is the UV index intensity in January?
Average temperature in January
Princeton, IA
- Average high temperature in January: 26.8°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in January: 14.4°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in January
Princeton, 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 (29.91"Hg).
Average wind speed in January
Princeton, IA
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in January
Princeton, IA
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Princeton, IA
- Average rainfall in January: 1.34"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and February (1.34").
Average rainfall days in January
Princeton, IA
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in January
Princeton, IA
- Average snowfall in January: 4.8"
The month with the highest snowfall is January (4.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Princeton, IA
- Average snowfall days in January: 12.3 days
The month with the highest number of snowfall days is January (12.3 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
Princeton, IA
- Average daylight in January: 9h and 4min
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 August (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 4h).
Average sunshine days in January
Princeton, IA
- Average sunshine days in January: 15.1 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in January
Princeton, IA
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Princeton, IA
- Average cloud cover in January: 58
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in January
Princeton, 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).
Princeton, Iowa, USA
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