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
Saint Mary's January weather reaches an average high of 39.6°F (4.2°C) and an average low of 25.7°F (-3.5°C), making it the coldest month.Humidity
In January, the average relative humidity is 75%.Rainfall
In Saint Mary, in January, during 7.9 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Saint Mary, during the entire year, the rain falls for 156.4 days and collects up to 34.25" (870mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Saint Mary, Missouri, in January, during 4.8 snowfall days, 1.81" (46mm) of snow is typically accumulated. Throughout the year, there are 16 snowfall days, and 6.89" (175mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 53min.On the first day of the month, sunrise is at 7:15 am and sunset at 4:51 pm. On the last day of January, sunrise is at 7:04 am and sunset at 5:21 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4.7h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Saint Mary. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 2 during January leads to these instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Saint Mary?
How cold is January in Saint Mary?
What is the average humidity in January in Saint Mary?
How much does it rain in Saint Mary in January?
How much does it snow in Saint Mary in January?
What is the average length of the day in January in Saint Mary?
What time are sunrise and sunset in January in Saint Mary?
What is the month with the least sunshine in Saint Mary?
How many hours of sunshine does Saint Mary have in January?
What are the months with the lowest UV index in Saint Mary?
How high is the UV index in January in Saint Mary?
Average temperature in January
Saint Mary, MO
- Average high temperature in January: 39.6°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 (39.6°F).
- Average low temperature in January: 25.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in January
Saint Mary, 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 (29.93"Hg).
Average wind speed in January
Saint Mary, MO
- Average wind speed in January: 9.4mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in January
Saint Mary, MO
- Average humidity in January: 75%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Saint Mary, MO
- Average rainfall in January: 2.13"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in January
Saint Mary, MO
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in January
Saint Mary, MO
- Average snowfall in January: 1.81"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Saint Mary, MO
- Average snowfall days in January: 4.8 days
The month with the highest number of snowfall days is February (5.2 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
Saint Mary, MO
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in January
Saint Mary, MO
- Average sunshine days in January: 18.8 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in January
Saint Mary, MO
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in January
Saint Mary, MO
- Average cloud cover in January: 48
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in January
Saint Mary, 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).
Saint Mary, Missouri, USA
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