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 shift to December brings a decrease in the average high-temperature, falling from a frosty 47.3°F (8.5°C) in November to a wintry 34.3°F (1.3°C). Patterson's average low-temperature for the month of December records at a freezing cold 22.5°F (-5.3°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Patterson, in December, during 5.9 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, in Patterson, there are 133 rainfall days, and 26.14" (664mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Patterson, in December, during 7.5 snowfall days, 1.97" (50mm) of snow is typically accumulated. Throughout the year, in Patterson, there are 35 snowfall days, and 15.04" (382mm) of snow is accumulated.Daylight
The month with the shortest days in Patterson is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:56 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Patterson, Iowa, are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
How cold is December in Patterson?
What is the average humidity in December in Patterson?
How many days does it rain in December in Patterson?
How much does it snow in Patterson in December?
What is the month with the shortest days in Patterson?
How many hours of daylight does Patterson have in December?
When is the sunrise / sunset in December in Patterson?
How long on average sun shines in December in Patterson?
What are the months with the lowest UV index in Patterson?
How high is the UV index in December in Patterson?
Average temperature in December
Patterson, IA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 22.5°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 (15.3°F).
Average pressure in December
Patterson, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Patterson, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Patterson, IA
- Average humidity in December: 78%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Patterson, IA
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in December
Patterson, IA
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in December
Patterson, IA
- Average snowfall in December: 1.97"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Patterson, IA
- Average snowfall days in December: 7.5 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
Patterson, IA
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 4h and 5min
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 24min).
Average sunshine days in December
Patterson, IA
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in December
Patterson, 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, October, November and December (UV index 2).
Average cloud cover in December
Patterson, IA
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in December
Patterson, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Patterson, Iowa, USA
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