December weather forecastPeterson, IA
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Peterson, Iowa, with an average temperature fluctuating between 29.1°F (-1.6°C) and 19°F (-7.2°C).Temperature
As Peterson steps into December, a marked temperature drop is observed, with the average high-temperature reducing from November's chilly 44.1°F (6.7°C) to a subzero cold 29.1°F (-1.6°C). In Peterson, the average low-temperature during the month of December is 19°F (-7.2°C).Humidity
The average relative humidity in December in Peterson is 82%.Rainfall
In December, the rain falls for 4.2 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. Throughout the year, there are 117 rainfall days, and 19.84" (504mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Peterson, in December, during 8 snowfall days, 1.77" (45mm) of snow is typically accumulated. In Peterson, during the entire year, snow falls for 36.4 days and aggregates up to 10.67" (271mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:33 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:57 pm CST.
Sunshine
In Peterson, the average sunshine in December is 4.7h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Peterson, IA
- Average high temperature in December: 29.1°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in December: 19°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in December
Peterson, IA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Peterson, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Peterson, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in December
Peterson, IA
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Peterson, IA
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Peterson, IA
- Average snowfall in December: 1.77"
The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Peterson, IA
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Peterson, 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 42min
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 6min).
Average sunshine days in December
Peterson, IA
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Peterson, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Peterson, IA
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Peterson, 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).
