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, with average temperatures reaching a high of 38.1°F (3.4°C) and a low of 24.6°F (-4.1°C), is the coldest month.Humidity
In January, the average relative humidity is 74%.Rainfall
In Byrnes Mill, in January, it is raining for 6.3 days, with typically 2.05" (52mm) of accumulated precipitation. In Byrnes Mill, during the entire year, the rain falls for 141.7 days and collects up to 32.01" (813mm) of precipitation.Snowfall
Months with snowfall are January through March, September, November and December. The month with the most snowfall is January, when snow falls for 6.7 days and typically aggregates up to 2.52" (64mm) of snow.Daylight
In January, the average length of the day is 9h and 51min.On the first day of January, sunrise is at 7:19 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:22 pm CST.
Sunshine
With an average of 4.5h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during January leads to these instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is it in January?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
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 Byrnes Mill have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Byrnes Mill, MO
- Average high temperature in January: 38.1°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (38.1°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
Byrnes Mill, 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
Byrnes Mill, MO
- Average wind speed in January: 8.9mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Byrnes Mill, MO
- Average humidity in January: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Byrnes Mill, MO
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days in January
Byrnes Mill, MO
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in January
Byrnes Mill, MO
- Average snowfall in January: 2.52"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Byrnes Mill, MO
- Average snowfall days in January: 6.7 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are April, May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Byrnes Mill, MO
- 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 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
Byrnes Mill, MO
- Average sunshine days in January: 19.1 days
The month with the most sunshine days is December (20.1 days).
The months with the least sunshine days are May and July (12.6 days).
Average UV index in January
Byrnes Mill, 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, November and December (UV index 2).
Average cloud cover in January
Byrnes Mill, 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
Byrnes Mill, 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).
Byrnes Mill, Missouri, USA
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