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 brings a small change in high-temperatures, falling from a frosty 43.9°F (6.6°C) in November to a freezing cold 31.5°F (-0.3°C). An average low-temperature of 21°F (-6.1°C) is observed in South Switch Junction, Iowa, during the December nights.Humidity
In South Switch Junction, the average relative humidity in December is 82%.Rainfall
In South Switch Junction, Iowa, in December, it is raining for 6.3 days, with typically 1.38" (35mm) of accumulated precipitation. In South Switch Junction, during the entire year, the rain falls for 135.3 days and collects up to 27.4" (696mm) of precipitation.Snowfall
Months with snowfall in South Switch Junction are January through April, October through December. In December, in South Switch Junction, it is snowing for 9 days. Throughout December, 2.68" (68mm) of snow is accumulated. Throughout the year, there are 43.9 snowfall days, and 17.09" (434mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in South Switch Junction.On the first day of the month, sunrise is at 7:13 am and sunset at 4:30 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:39 pm CST.
Sunshine
In South Switch Junction, Iowa, the average sunshine in December is 4h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 1 in December interprets into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
How cold is December in South Switch Junction?
What is the average humidity in December in South Switch Junction?
How much does it rain in South Switch Junction in December?
How much does it snow in South Switch Junction in December?
What is the month with the shortest days in South Switch Junction?
What is the average length of the day in December in South Switch Junction?
When are sunrise and sunset in December in South Switch Junction?
How many hours of sunshine does South Switch Junction have in December?
What are the months with the lowest UV index in South Switch Junction?
What is the UV index intensity in December in South Switch Junction?
Average temperature in December
South Switch Junction, IA
- Average high temperature in December: 31.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 21°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
South Switch Junction, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
South Switch Junction, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
South Switch Junction, IA
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
South Switch Junction, IA
- Average rainfall in December: 1.38"
The wettest months (with the highest rainfall) are May and June (3.7").
The driest months (with the least rainfall) are January and February (1.14").
Average rainfall days in December
South Switch Junction, IA
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in December
South Switch Junction, IA
- Average snowfall in December: 2.68"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
South Switch Junction, IA
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Switch Junction, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
South Switch Junction, IA
- Average sunshine days in December: 17.5 days
The months with the most sunshine days are November and December (17.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
South Switch Junction, IA
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
South Switch Junction, IA
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
South Switch Junction, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
South Switch Junction, Iowa, USA
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