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
Temperature records mark January as the coldest month, with highs averaging 32.2°F (0.1°C) and lows at 20.3°F (-6.5°C).Humidity
January and December, with an average relative humidity of 83%, are the most humid months.Rainfall
In Jolietville, during January, the rain falls for 8.3 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, there are 171 rainfall days, and 34.21" (869mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Jolietville, during January, snow falls for 12 days and regularly aggregates up to 4.21" (107mm) of snow. In Jolietville, during the entire year, snow falls for 40.4 days and aggregates up to 15.63" (397mm) of snow.Daylight
The average length of the day in January in Jolietville is 9h and 43min.On the first day of the month, sunrise is at 8:06 am and sunset at 5:29 pm. On the last day of January, sunrise is at 7:54 am and sunset at 6:02 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3.9h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In January, a daily UV index of 2 turns into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Jolietville have in January?
What is the UV index reading in January?
Average temperature in January
Jolietville, IN
- Average high temperature in January: 32.2°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in January: 20.3°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in January
Jolietville, IN
- 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 (29.93"Hg).
Average wind speed in January
Jolietville, IN
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Jolietville, IN
- Average humidity in January: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Jolietville, IN
- Average rainfall in January: 2.48"
The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in January
Jolietville, IN
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in January
Jolietville, IN
- Average snowfall in January: 4.21"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Jolietville, IN
- Average snowfall days in January: 12 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jolietville, IN
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Jolietville, IN
- Average sunshine days in January: 11.8 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.1 days).
Average UV index in January
Jolietville, IN
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Jolietville, IN
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in January
Jolietville, IN
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Jolietville, Indiana, USA
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