January weather forecastBallwin, MO
January
Weather in January
The year in Ballwin, Missouri starts off with chilly conditions and a temperature ranging from 24.6°F (-4.1°C) to 38.5°F (3.6°C). The winter weather finds residents bracing themselves for the biting cold with moderate levels of snowfall. It isn't uncommon to find layers of frost or a light coat of snow defining the landscapes. This, coupled with the relatively low daylight hours, defines most outdoor activities and attire. Nevertheless, the tranquil hush of winter presents a different kind of beauty to behold.Temperature
January, recording an average high temperature of 38.5°F (3.6°C) and a low temperature of 24.6°F (-4.1°C), is Ballwin's coldest month.Humidity
In January, the average relative humidity is 75%.Rainfall
In Ballwin, in January, it is raining for 6.3 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, there are 134.1 rainfall days, and 23.82" (605mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Ballwin, in January, during 6.4 snowfall days, 1.14" (29mm) of snow is typically accumulated. Throughout the year, there are 19.5 snowfall days, and 4.29" (109mm) of snow is accumulated.Daylight
In Ballwin, the average length of the day in January is 9h and 50min.On the first day of January in Ballwin, Missouri, sunrise is at 7:19 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:22 pm CST.
Sunshine
January has the least sunshine of the year in Ballwin, with an average of 4.6h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Ballwin, Missouri. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Ballwin, MO
- Average high temperature in January: 38.5°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in January: 24.6°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in January
Ballwin, MO
- 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
Ballwin, MO
- Average wind speed in January: 8.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in January
Ballwin, MO
- Average humidity in January: 75%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Ballwin, MO
- Average rainfall in January: 1.26"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in January
Ballwin, MO
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (6.1 days).
Average snowfall in January
Ballwin, MO
- Average snowfall in January: 1.14"
The month with the highest snowfall is December (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Ballwin, MO
- Average snowfall days in January: 6.4 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Ballwin, MO
- Average daylight in January: 9h and 48min
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 36min
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 36min).
Average sunshine days in January
Ballwin, MO
- Average sunshine days in January: 20.1 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is May (12.6 days).
Average UV index in January
Ballwin, MO
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in January
Ballwin, MO
- Average cloud cover in January: 51
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).
Average visibility in January
Ballwin, MO
- 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).
