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 38.1°F (3.4°C) and lows at 24.1°F (-4.4°C).Humidity
In January, the average relative humidity in Marthasville is 75%.Rainfall
In January, the rain falls for 6.2 days. Throughout January, 1.46" (37mm) of precipitation is accumulated. In Marthasville, during the entire year, the rain falls for 133.1 days and collects up to 27.24" (692mm) of precipitation.Snowfall
January through March, September, November and December are months with snowfall. In Marthasville, in January, snow falls for 5.1 days, with typically accumulated 1.61" (41mm) of snow. In Marthasville, during the entire year, snow falls for 16.6 days and aggregates up to 5.87" (149mm) of snow.Daylight
The average length of the day in January is 9h and 50min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:53 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:24 pm CST.
Sunshine
With an average of 4.6h of sunshine, January has the least sunshine of the year.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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
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. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. 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 average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Marthasville have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Marthasville have in January?
What is the month with the lowest UV index?
What is the UV index reading in January in Marthasville?
Average temperature in January
Marthasville, MO
- Average high temperature in January: 38.1°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in January: 24.1°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in January
Marthasville, 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
Marthasville, MO
- Average wind speed in January: 8.5mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Marthasville, 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 (72%).
Average rainfall in January
Marthasville, MO
- Average rainfall in January: 1.46"
The wettest months (with the highest rainfall) are April and May (3.23").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in January
Marthasville, MO
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in January
Marthasville, MO
- Average snowfall in January: 1.61"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Marthasville, MO
- Average snowfall days in January: 5.1 days
The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Marthasville, 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 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in January
Marthasville, MO
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in January
Marthasville, MO
- 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
Marthasville, MO
- 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 and August (Cloud cover 30).
Average visibility in January
Marthasville, MO
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, September, October, November and December (6mi).
The months with the lowest visibility are May and August (5mi).
Marthasville, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location