Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January is the coldest month of the year, registering average temperatures as high as 54°F (12.2°C) and as low as 38.5°F (3.6°C).Humidity
In Rockwall, the average relative humidity in January is 69%.Rainfall
The month with the least rainfall in Rockwall is January, when the rain falls for 7.8 days and typically collects 1.81" (46mm) of precipitation.Snowfall
January, February and November are months with snowfall. January is the first month it typically snows in Rockwall. Throughout January, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 2.2 snowfall days, and 1.18" (30mm) of snow is accumulated.Daylight
In Rockwall, the average length of the day in January is 10h and 16min.On the first day of the month, sunrise is at 7:28 am and sunset at 5:30 pm. On the last day of January, in Rockwall, sunrise is at 7:21 am and sunset at 5:56 pm CST.
Sunshine
In January, the average sunshine is 5.7h.UV index
The months with the lowest UV index in Rockwall are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 3 in January translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. To protect against the Sun's most potent rays, avoid direct exposure around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What is the coldest month in Rockwall?
What is the temperature in January in Rockwall?
What is the average humidity in January in Rockwall?
What is the driest month in Rockwall?
How much does it rain in Rockwall in January?
When does it start to snow in Rockwall?
What is the average length of the day in January in Rockwall?
When are sunrise and sunset in January in Rockwall?
How long on average sun shines in January in Rockwall?
What is the month with the lowest UV index in Rockwall?
How high is the UV index in January in Rockwall?
Average temperature in January
Rockwall, TX
- Average high temperature in January: 54°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in January: 38.5°F
The months with the highest average low temperature are July and August (74.8°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in January
Rockwall, TX
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Rockwall, TX
- Average wind speed in January: 9mph
The windiest month (with the highest average wind speed) is March (9.6mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in January
Rockwall, TX
- Average humidity in January: 69%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (60%).
Average rainfall in January
Rockwall, TX
- Average rainfall in January: 1.81"
The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in January
Rockwall, TX
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is September (15.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in January
Rockwall, TX
- Average snowfall in January: 0.2"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in January
Rockwall, TX
- Average snowfall days in January: 0.4 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Rockwall, TX
- Average daylight in January: 10h and 2min
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 January: 5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in January
Rockwall, TX
- Average sunshine days in January: 21.4 days
The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is September (13.4 days).
Average UV index in January
Rockwall, TX
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in January
Rockwall, TX
- Average cloud cover in January: 34
The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in January
Rockwall, TX
- Average visibility in January: 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).
Rockwall, Texas, USA
Weather forecast for your location
2. Allow the app to use your location
