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
The onset of December results in a decrease in the average high-temperature, receding from an icy 40.5°F (4.7°C) in November to a subzero cold 29.7°F (-1.3°C). The December average low temperature, marginally lower than the daytime high, records at a still freezing cold 21.6°F (-5.8°C).Humidity
The average relative humidity in December is 87%.Rainfall
In Johannesburg, Michigan, in December, during 8.5 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, in Johannesburg, there are 140.1 rainfall days, and 23.39" (594mm) of precipitation is accumulated.Snowfall
Months with snowfall in Johannesburg are January through May, October through December. In December, in Johannesburg, it is snowing for 21.5 days. Throughout December, 8.19" (208mm) of snow is accumulated. In Johannesburg, during the entire year, snow falls for 109.2 days and aggregates up to 47.09" (1196mm) of snow.Daylight
December has the shortest days of the year in Johannesburg, Michigan, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:56 am and sunset at 4:57 pm. On the last day of December, sunrise is at 8:15 am and sunset at 5:06 pm EST.
Sunshine
In December, the average sunshine in Johannesburg is 2.1h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. When the Sun is at its strongest around midday, find shade and limit exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
How cold is December in Johannesburg?
What is the average humidity in December in Johannesburg?
How many days does it rain in December in Johannesburg?
How much does it snow in Johannesburg in December?
What is the month with the shortest days in Johannesburg?
What is the average length of the day in December in Johannesburg?
What time are sunrise and sunset in December in Johannesburg?
How long on average sun shines in December in Johannesburg?
What is the month with the lowest UV index in Johannesburg?
What is the UV index intensity in December in Johannesburg?
Average temperature in December
Johannesburg, MI
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in December: 21.6°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in December
Johannesburg, MI
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is March (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Johannesburg, MI
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Johannesburg, MI
- Average humidity in December: 87%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).
Average rainfall in December
Johannesburg, MI
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in December
Johannesburg, MI
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is October (17.5 days).
The months with the least rainy days are January and February (5 days).
Average snowfall in December
Johannesburg, MI
- Average snowfall in December: 8.19"
The month with the highest snowfall is January (10.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Johannesburg, MI
- Average snowfall days in December: 21.5 days
The month with the highest number of snowfall days is January (24.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Johannesburg, MI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 2h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 42min).
Average sunshine days in December
Johannesburg, MI
- Average sunshine days in December: 6.8 days
The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.4 days).
Average UV index in December
Johannesburg, MI
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Johannesburg, MI
- Average cloud cover in December: 78
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Johannesburg, MI
- Average visibility in December: 4mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Johannesburg, Michigan, USA
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