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
January, marked by an average high-temperature of 36.9°F (2.7°C) and a low-temperature of 23.7°F (-4.6°C), is the coldest month.Humidity
In Saint Jacob, the average relative humidity in January is 76%.Rainfall
In January, in Saint Jacob, the rain falls for 5.9 days. Throughout January, 0.91" (23mm) of precipitation is accumulated. In Saint Jacob, during the entire year, the rain falls for 110.6 days and collects up to 12.01" (305mm) of precipitation.Snowfall
January through March, October through December are months with snowfall. In Saint Jacob, in January, snow falls for 4.8 days, with typically accumulated 0.51" (13mm) of snow. In Saint Jacob, during the entire year, snow falls for 15.9 days and aggregates up to 2.32" (59mm) of snow.Daylight
In January, the average length of the day in Saint Jacob is 9h and 50min.On the first day of the month, sunrise is at 7:17 am and sunset at 4:48 pm. On the last day of January, in Saint Jacob, Illinois, sunrise is at 7:05 am and sunset at 5:19 pm CST.
Sunshine
January and February, with an average of 4.6h of sunshine, are months with the least sunshine in Saint Jacob.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 2 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
What is the coldest time of year in Saint Jacob?
How cold is January in Saint Jacob?
What is the average humidity in January in Saint Jacob?
How many days does it rain in January in Saint Jacob?
How many days does it snow in January in Saint Jacob?
How many hours of daylight does Saint Jacob have in January?
What time are sunrise and sunset in January in Saint Jacob?
What are the months with the least sunshine in Saint Jacob?
How many hours of sunshine does Saint Jacob have in January?
What are the months with the lowest UV index in Saint Jacob?
What is the UV index reading in January in Saint Jacob?
Average temperature in January
Saint Jacob, IL
- Average high temperature in January: 36.9°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in January: 23.7°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure in January
Saint Jacob, IL
- 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 (29.92"Hg).
Average wind speed in January
Saint Jacob, IL
- Average wind speed in January: 9.8mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in January
Saint Jacob, IL
- Average humidity in January: 76%
The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Saint Jacob, IL
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is May (1.46").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in January
Saint Jacob, IL
- Average rainfall days in January: 5.9 days
The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are January and December (5.9 days).
Average snowfall in January
Saint Jacob, IL
- Average snowfall in January: 0.51"
The month with the highest snowfall is December (0.94").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in January
Saint Jacob, IL
- Average snowfall days in January: 4.8 days
The months with the highest number of snowfall days are January and February (4.8 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
Saint Jacob, IL
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in January
Saint Jacob, IL
- Average sunshine days in January: 21.3 days
The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (14.5 days).
Average UV index in January
Saint Jacob, IL
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Saint Jacob, IL
- Average cloud cover in January: 50
The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July, August and September (Cloud cover 28).
Average visibility in January
Saint Jacob, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint Jacob, Illinois, USA
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