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 arrival of December signals a subtle shift in temperature, down from an enjoyable 61.7°F (16.5°C) in November to a cool 52.9°F (11.6°C). The month of December records an average low-temperature of 37.4°F (3°C).Humidity
The average relative humidity in December is 78%.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. In Grannis, during the entire year, the rain falls for 136.7 days and collects up to 26.18" (665mm) of precipitation.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows in Grannis. Throughout December, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Grannis, Arkansas, there are 2.6 snowfall days, and 0.94" (24mm) of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:05 am and sunset at 5:07 pm. On the last day of December, in Grannis, sunrise is at 7:23 am and sunset at 5:18 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.2h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grannis in December?
What is the average humidity in December in Grannis?
How many days does it rain in December in Grannis?
When does it start to snow in Grannis?
What is the month with the shortest days in Grannis?
What is the average length of the day in December in Grannis?
When are sunrise and sunset in December in Grannis?
What is the month with the least sunshine in Grannis?
How long on average sun shines in December in Grannis?
What is the month with the lowest UV index in Grannis?
What is the UV index intensity in December in Grannis?
Average temperature in December
Grannis, AR
- Average high temperature in December: 52.9°F
The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in December: 37.4°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in December
Grannis, AR
- 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 (29.93"Hg).
Average wind speed in December
Grannis, AR
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Grannis, AR
- Average humidity in December: 78%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (68%).
Average rainfall in December
Grannis, AR
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Grannis, AR
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in December
Grannis, AR
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Grannis, AR
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Grannis, AR
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Grannis, AR
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is January (20.5 days).
The months with the least sunshine days are May and August (14.8 days).
Average UV index in December
Grannis, AR
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Grannis, AR
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Grannis, AR
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
Grannis, Arkansas, USA
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