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's onset brings a reduction in the average high-temperature, from a frosty 48.4°F (9.1°C) in November to a wintry 35.8°F (2.1°C). During December, the temperature in Plano tends to dip to an average of 23.9°F (-4.5°C) at night.Humidity
The average relative humidity in December is 79%.Rainfall
In Plano, in December, during 7 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Plano, during the entire year, the rain falls for 143.2 days and collects up to 27.48" (698mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, in Plano, it is snowing for 7.2 days. Throughout December, 1.57" (40mm) of snow is accumulated. Throughout the year, in Plano, Iowa, there are 33.2 snowfall days, and 15.31" (389mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:54 pm CST.
Sunshine
In December, the average sunshine is 4.8h.UV index
In Plano, Iowa, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
How cold is it in Plano in December?
What is the average humidity in December in Plano?
How much does it rain in Plano in December?
How many days does it snow in December in Plano?
What is the month with the shortest days in Plano?
What is the average length of the day in December in Plano?
When are sunrise and sunset in December in Plano?
How many hours of sunshine does Plano have in December?
How high is the UV index in December in Plano?
Average temperature in December
Plano, IA
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Plano, 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 (29.89"Hg).
Average wind speed in December
Plano, IA
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January, February and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Plano, IA
- Average humidity in December: 79%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Plano, IA
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in December
Plano, IA
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5 days).
Average snowfall in December
Plano, IA
- Average snowfall in December: 1.57"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Plano, IA
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Plano, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Plano, IA
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (8.8 days).
Average UV index in December
Plano, 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
Plano, IA
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in December
Plano, 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).
Plano, Iowa, USA
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