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
With December's onset, the weather shows a temperature decrease, transitioning from a frosty 46.9°F (8.3°C) in November to a cold 34.7°F (1.5°C). The average low-temperature in Sigourney during December nights is a freezing cold 23.4°F (-4.8°C).Humidity
In Sigourney, the average relative humidity in December is 80%.Rainfall
In December, the rain falls for 6.8 days. Throughout December, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Sigourney, there are 137.9 rainfall days, and 27.76" (705mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, in Sigourney, Iowa, it is snowing for 6.5 days. Throughout December, 1.34" (34mm) of snow is accumulated. In Sigourney, during the entire year, snow falls for 32.8 days and aggregates up to 12.56" (319mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Sigourney.On the first day of December in Sigourney, Iowa, sunrise is at 7:15 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:49 pm CST.
Sunshine
The average sunshine in December is 4.6h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Sigourney, Iowa. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Sigourney?
What is the average humidity in December in Sigourney?
How many days does it rain in December in Sigourney?
How much does it snow in Sigourney in December?
What is the month with the shortest days in Sigourney?
How many hours of daylight does Sigourney have in December?
When is the sunrise / sunset in December in Sigourney?
How many hours of sunshine does Sigourney have in December?
When is the lowest UV index in Sigourney?
What is the UV index reading in December in Sigourney?
Average temperature in December
Sigourney, IA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in December
Sigourney, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Sigourney, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Sigourney, IA
- Average humidity in December: 80%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Sigourney, IA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in December
Sigourney, IA
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Sigourney, IA
- Average snowfall in December: 1.34"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sigourney, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sigourney, IA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Sigourney, IA
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Sigourney, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Sigourney, IA
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in December
Sigourney, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Sigourney, Iowa, USA
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