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 indicates a minor shift in the average high-temperature, from November's enjoyable 66.7°F (19.3°C) to a still refreshing 59.2°F (15.1°C). Johnson City's nighttime temperature in December drops to an average of 43.2°F (6.2°C).Humidity
In Johnson City, the average relative humidity in December is 70%.Rainfall
In December, the rain falls for 9.9 days. Throughout December, 1.22" (31mm) of precipitation is accumulated. In Johnson City, during the entire year, the rain falls for 149 days and collects up to 24.92" (633mm) of precipitation.Snowfall
March through October and December are months without snowfall.Daylight
With an average of 10h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:13 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:43 pm CST.
Sunshine
The months with the least sunshine are November and December, with an average of 5.5h of sunshine.UV index
December is the month with the lowest UV index in Johnson City, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a regular UV index of 3 translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the average December temperature in Johnson City?
What is the average humidity in December in Johnson City?
How many days does it rain in December in Johnson City?
When it does not snow in Johnson City?
Does it snow in Johnson City in December?
What is the month with the shortest days in Johnson City?
What is the average length of the day in December in Johnson City?
When are sunrise and sunset in December in Johnson City?
What are the months with the least sunshine in Johnson City?
How long on average sun shines in December in Johnson City?
When is the lowest UV index in Johnson City?
What is the UV index intensity in December in Johnson City?
Average temperature in December
Johnson City, TX
- Average high temperature in December: 59.2°F
The warmest month (with the highest average high temperature) is August (93.9°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in December: 43.2°F
The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is January (41.4°F).
Average pressure in December
Johnson City, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Johnson City, TX
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in December
Johnson City, TX
- Average humidity in December: 70%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (61%).
Average rainfall in December
Johnson City, TX
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in December
Johnson City, TX
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in December
Johnson City, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Johnson City, TX
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Johnson City, TX
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are November and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Johnson City, TX
- Average sunshine days in December: 19 days
The month with the most sunshine days is January (21.1 days).
The months with the least sunshine days are May and September (11.1 days).
Average UV index in December
Johnson City, TX
- Average UV index in December: 3
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 3).
Average cloud cover in December
Johnson City, TX
- Average cloud cover in December: 39
The month with the most cloud cover is May (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Johnson City, TX
- 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).
Johnson City, Texas, USA
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