Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December involves a decrease in temperature, down from a cool 51.6°F (10.9°C) in November to an icy 38.3°F (3.5°C). December nights experience a consistent temperature drop to a subzero cold 25.3°F (-3.7°C).Humidity
In December, the average relative humidity in Saint Joseph is 76%.Rainfall
In Saint Joseph, in December, during 6.1 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. Throughout the year, there are 133.5 rainfall days, and 27.28" (693mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Saint Joseph, Missouri, in December, snow falls for 4.5 days, with typically accumulated 1.26" (32mm) of snow. In Saint Joseph, during the entire year, snow falls for 22.7 days and aggregates up to 8.03" (204mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:05 pm CST.
Sunshine
In Saint Joseph, the average sunshine in December is 5.5h.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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. 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
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Saint Joseph have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Saint Joseph have in December?
What is the month with the lowest UV index in Saint Joseph?
How high is the UV index in December?
Average temperature in December
Saint Joseph, MO
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in December: 25.3°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Saint Joseph, MO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Saint Joseph, MO
- Average wind speed in December: 9.2mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in December
Saint Joseph, MO
- Average humidity in December: 76%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Saint Joseph, MO
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in December
Saint Joseph, MO
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Saint Joseph, MO
- Average snowfall in December: 1.26"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Saint Joseph, MO
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint Joseph, MO
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Saint Joseph, MO
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in December
Saint Joseph, MO
- Average UV index in December: 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 December
Saint Joseph, MO
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Saint Joseph, MO
- Average visibility in December: 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 Joseph, Missouri, USA
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