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
With the arrival of December, Simms notices a mild change in the average high-temperature, sliding from November's refreshing 63.1°F (17.3°C) to a fresh 54.3°F (12.4°C). Simms observes an average low-temperature of 39.4°F (4.1°C) during December.Humidity
In Simms, the average relative humidity in December is 79%.Rainfall
In December, the rain falls for 11.4 days. Throughout December, 3.86" (98mm) of precipitation is accumulated. Throughout the year, there are 153.9 rainfall days, and 39.69" (1008mm) of precipitation is accumulated.Snowfall
January through March and December are months with snowfall in Simms. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 3.7 snowfall days, and 1.57" (40mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:21 pm CST.
Sunshine
With an average of 5h of sunshine, December has the least sunshine of the year in Simms.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are December temperatures in Simms?
What is the average humidity in December in Simms?
How much does it rain in Simms in December?
When does it start to snow in Simms?
What is the month with the shortest days in Simms?
What is the average length of the day in December in Simms?
What time are sunrise and sunset in December in Simms?
What is the month with the least sunshine in Simms?
How many hours of sunshine does Simms have in December?
What is the month with the lowest UV index in Simms?
How high is the UV index in December in Simms?
Average temperature in December
Simms, TX
- Average high temperature in December: 54.3°F
The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in December: 39.4°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in December
Simms, TX
- 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
Simms, TX
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Simms, TX
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (67%).
Average rainfall in December
Simms, TX
- Average rainfall in December: 3.86"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is September (2.36").
Average rainfall days in December
Simms, TX
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in December
Simms, TX
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Simms, TX
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Simms, TX
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 0min
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 0min).
Average sunshine days in December
Simms, TX
- Average sunshine days in December: 17.2 days
The month with the most sunshine days is January (18.5 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in December
Simms, TX
- 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
Simms, TX
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Simms, TX
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Simms, Texas, USA
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