December weather forecastRoby, TX
December
Weather in December
The first month of the winter, December, is also a moderate month in Roby, Texas, with an average temperature ranging between min 38.3°F (3.5°C) and max 55.9°F (13.3°C).Temperature
Roby notes the coldest temperatures in December, with a high average of 55.9°F (13.3°C) and a low of 38.3°F (3.5°C).Humidity
The average relative humidity in December in Roby is 54%.Rainfall
In December, the rain falls for 4.1 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. In Roby, during the entire year, the rain falls for 84.3 days and collects up to 14.49" (368mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Roby. In Roby, during December, snow falls for 1.5 days and regularly aggregates up to 0.91" (23mm) of snow. In Roby, Texas, during the entire year, snow falls for 4.7 days and aggregates up to 2.91" (74mm) of snow.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year in Roby.On the first day of December in Roby, sunrise is at 7:26 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:46 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 6.6h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 3 during December leads to these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Roby, TX
- Average high temperature in December: 55.9°F
The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is August (75.9°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).
Average pressure in December
Roby, 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 (29.85"Hg).
Average wind speed in December
Roby, TX
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is April (14mph).
The calmest month (with the lowest average wind speed) is September (10.2mph).
Average humidity in December
Roby, TX
- Average humidity in December: 54%
The month with the highest relative humidity is September (55%).
The month with the lowest relative humidity is August (44%).
Average rainfall in December
Roby, TX
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (2.17").
The driest months (with the least rainfall) are January and February (0.51").
Average rainfall days in December
Roby, TX
- Average rainfall days in December: 4.1 days
The months with the highest number of rainy days are May and September (11.2 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in December
Roby, TX
- Average snowfall in December: 0.91"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Roby, TX
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is December (1.5 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
Roby, 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: 6h and 36min
The months with the most sunshine are June and July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Roby, TX
- Average sunshine days in December: 24.7 days
The month with the most sunshine days is January (26.8 days).
The month with the least sunshine days is September (17.6 days).
Average UV index in December
Roby, TX
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Roby, TX
- Average cloud cover in December: 25
The months with the most cloud cover are March, September and December (Cloud cover 25).
The months with the least cloud cover are June and August (Cloud cover 16).
Average visibility in December
Roby, 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).
