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 27.7°F (-2.4°C) and a low of 15.1°F (-9.4°C).Humidity
January and July, with an average relative humidity of 85%, are the most humid months.Rainfall
January is the month with the least rainfall in Prophetstown. Rain falls for 5.2 days and accumulates 1.42" (36mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Prophetstown, Illinois. January is the month with the most snowfall. Snow falls for 10.5 days and accumulates 4.49" (114mm) of snow.Daylight
In January, the average length of the day is 9h and 34min.On the first day of the month, sunrise is at 7:26 am and sunset at 4:39 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:13 pm CST.
Sunshine
With an average of 3.9h of sunshine, January has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Prophetstown. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In January, the average maximum UV index of 1 translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
What are the coldest months in Prophetstown?
How cold is January in Prophetstown?
What are the most humid months in Prophetstown?
What is the average humidity in January in Prophetstown?
What is the driest month in Prophetstown?
How much does it rain in Prophetstown in January?
When does it snow the most in Prophetstown?
How much does it snow in Prophetstown in January?
How many hours of daylight does Prophetstown have in January?
When are sunrise and sunset in January in Prophetstown?
What is the month with the least sunshine in Prophetstown?
How many hours of sunshine does Prophetstown have in January?
What are the months with the lowest UV index in Prophetstown?
What is the UV index reading in January in Prophetstown?
Average temperature in January
Prophetstown, IL
- Average high temperature in January: 27.7°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 (27.7°F).
- Average low temperature in January: 15.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in January
Prophetstown, IL
- 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
Prophetstown, IL
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in January
Prophetstown, IL
- Average humidity in January: 85%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Prophetstown, IL
- Average rainfall in January: 1.42"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in January
Prophetstown, IL
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in January
Prophetstown, IL
- Average snowfall in January: 4.49"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Prophetstown, IL
- Average snowfall days in January: 10.5 days
The month with the highest number of snowfall days is January (10.5 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
Prophetstown, IL
- 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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Prophetstown, IL
- Average sunshine days in January: 16.1 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in January
Prophetstown, IL
- Average UV index in January: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Prophetstown, IL
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in January
Prophetstown, IL
- 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).
Prophetstown, Illinois, USA
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