December weather forecastGuttenberg, IA
December
Weather in December
December brings the onset of winter in Guttenberg. It’s noticeably colder than November, with temperatures dipping considerably. Snowfall increases substantially to its yearly height of 3.94" (100mm). The duration of daylight decreases to 9.1 hours and the humidity scales up to 83%. Despite the chilly temperatures, the wind speed moderates at 9.5mph (15.3km/h), making the weather feel colder than it actually is.Temperature
The arrival of December signals a shift in temperature, down from a chilly 43.5°F (6.4°C) in November to a freezing cold 30.4°F (-0.9°C). An average low-temperature of 20.3°F (-6.5°C) is noted during the month of December.Humidity
The average relative humidity in December is 83%.Rainfall
In December, the rain falls for 6 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. In Guttenberg, during the entire year, the rain falls for 138.5 days and collects up to 28.46" (723mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Guttenberg, in December, snow falls for 10.6 days, with typically accumulated 3.94" (100mm) of snow. Throughout the year, in Guttenberg, there are 48.6 snowfall days, and 19.57" (497mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:15 am and sunset at 4:31 pm. On the last day of December, in Guttenberg, sunrise is at 7:34 am and sunset at 4:40 pm CST.
Sunshine
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 threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 1 in December translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Guttenberg, IA
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in December
Guttenberg, 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
Guttenberg, IA
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Guttenberg, IA
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Guttenberg, IA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Guttenberg, IA
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in December
Guttenberg, IA
- Average snowfall in December: 3.94"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Guttenberg, IA
- Average snowfall days in December: 10.6 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Guttenberg, IA
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
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 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Guttenberg, IA
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Guttenberg, IA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Guttenberg, 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 31).
Average visibility in December
Guttenberg, IA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
