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
In Plano, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 49.5°F (9.7°C) to a wintry 39°F (3.9°C). During December, Plano's temperature averages to a freezing cold 28.2°F (-2.1°C) at night.Humidity
In December, the average relative humidity is 82%.Rainfall
In Plano, in December, during 8.5 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Plano, Indiana, during the entire year, the rain falls for 148.1 days and collects up to 25.43" (646mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Plano. December is the month with the most snowfall. Snow falls for 5.4 days and accumulates 2.24" (57mm) of snow.Daylight
December has the shortest days of the year in Plano, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:48 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:32 pm EST.
Sunshine
In Plano, the average sunshine in December is 4.3h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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?
When does it snow the most in Plano?
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?
What time are sunrise and sunset in December in Plano?
How many hours of sunshine does Plano have in December?
When is the lowest UV index in Plano?
What is the UV index intensity in December in Plano?
Average temperature in December
Plano, IN
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in December: 28.2°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 (21.2°F).
Average pressure in December
Plano, IN
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Plano, IN
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Plano, IN
- Average humidity in December: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Plano, IN
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in December
Plano, IN
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Plano, IN
- Average snowfall in December: 2.24"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Plano, IN
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Plano, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Plano, IN
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in December
Plano, IN
- Average UV index in December: 2
The months with the highest UV index are 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
Plano, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Plano, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Plano, Indiana, USA
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