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 implies a gentle temperature shift, with average high-temperatures reducing from November's chilly 49.3°F (9.6°C) to an icy 35.2°F (1.8°C). An average nighttime temperature of 23°F (-5°C) is noted during the month of December.Humidity
In December, the average relative humidity is 77%.Rainfall
In Norwich, Iowa, in December, during 5.1 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. In Norwich, Iowa, during the entire year, the rain falls for 125.6 days and collects up to 26.14" (664mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Norwich, Iowa, during December, snow falls for 5.6 days and regularly aggregates up to 1.85" (47mm) of snow. In Norwich, Iowa, during the entire year, snow falls for 29.3 days and aggregates up to 10.71" (272mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Norwich.On the first day of December, sunrise is at 7:26 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:03 pm CST.
Sunshine
The average sunshine in December is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Norwich. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 2 suggests this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Norwich in December?
What is the average humidity in December in Norwich?
How much does it rain in Norwich in December?
How much does it snow in Norwich in December?
What is the month with the shortest days in Norwich?
What is the average length of the day in December in Norwich?
When is the sunrise / sunset in December in Norwich?
How many hours of sunshine does Norwich have in December?
What are the months with the lowest UV index in Norwich?
What is the UV index reading in December in Norwich?
Average temperature in December
Norwich, IA
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Norwich, IA
- 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 (29.87"Hg).
Average wind speed in December
Norwich, IA
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
Norwich, IA
- Average humidity in December: 77%
The months with the highest relative humidity are January and July (79%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Norwich, IA
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in December
Norwich, IA
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in December
Norwich, IA
- Average snowfall in December: 1.85"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Norwich, IA
- Average snowfall days in December: 5.6 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Norwich, IA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Norwich, IA
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in December
Norwich, IA
- 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
Norwich, IA
- Average cloud cover in December: 44
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Norwich, IA
- 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).
Norwich, Iowa, USA
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