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 month of January, characterized by an average high of 35.2°F (1.8°C) and a low of 22.5°F (-5.3°C), is recognized as the coldest.Humidity
The months with the highest humidity are January, February, July and December, with an average relative humidity of 81%.Rainfall
In Old Saint Louis, in January, it is raining for 9.4 days, with typically 2.09" (53mm) of accumulated precipitation. In Old Saint Louis, during the entire year, the rain falls for 163.5 days and collects up to 29.29" (744mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Old Saint Louis, during January, snow falls for 9.6 days and regularly aggregates up to 1.89" (48mm) of snow. Throughout the year, there are 34.1 snowfall days, and 8.54" (217mm) of snow is accumulated.Daylight
In Old Saint Louis, Indiana, the average length of the day in January is 9h and 46min.On the first day of the month, sunrise is at 8:02 am and sunset at 5:30 pm. On the last day of January, sunrise is at 7:51 am and sunset at 6:01 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 4.1h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Old Saint Louis. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 2 in January leads to these recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Old Saint Louis?
How cold is it in Old Saint Louis in January?
What are the most humid months in Old Saint Louis?
What is the average humidity in January in Old Saint Louis?
How much does it rain in Old Saint Louis in January?
How many days does it snow in January in Old Saint Louis?
What is the average length of the day in January in Old Saint Louis?
What time are sunrise and sunset in January in Old Saint Louis?
What is the month with the least sunshine in Old Saint Louis?
How long on average sun shines in January in Old Saint Louis?
What is the month with the lowest UV index in Old Saint Louis?
How high is the UV index in January in Old Saint Louis?
Average temperature in January
Old Saint Louis, IN
- Average high temperature in January: 35.2°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in January: 22.5°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in January
Old Saint Louis, IN
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Old Saint Louis, IN
- Average wind speed in January: 8.9mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in January
Old Saint Louis, IN
- Average humidity in January: 81%
The months with the highest relative humidity are January, February, July and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Old Saint Louis, IN
- Average rainfall in January: 2.09"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in January
Old Saint Louis, IN
- Average rainfall days in January: 9.4 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (9.4 days).
Average snowfall in January
Old Saint Louis, IN
- Average snowfall in January: 1.89"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Old Saint Louis, IN
- Average snowfall days in January: 9.6 days
The month with the highest number of snowfall days is January (9.6 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
Old Saint Louis, IN
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Old Saint Louis, IN
- Average sunshine days in January: 13.5 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in January
Old Saint Louis, IN
- Average UV index in January: 2
The months with the highest UV index are 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
Old Saint Louis, IN
- Average cloud cover in January: 58
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Old Saint Louis, IN
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are July and December (5mi).
Old Saint Louis, Indiana, USA
Weather forecast for your location
2. Allow the app to use your location