January weather forecastRound Rock, TX
January
Weather in January
Beginning the year, Round Rock, Texas, greets January with relatively mild weather. The temperatures are moderately low, leaving residents with a need for coats and scarves; however, it is much less frigid compared to other states during this month. The winter winds are noticeable and residents can observe frequent cloudy days. Some rain remains typical but less compared to other winter months. An occasional dusting of snow might make an appearance as the month witnesses a slight snowfall of 0.08" (2mm).Temperature
Round Rock's January weather, with an average high temperature of 58.6°F (14.8°C) and an average low temperature of 42.4°F (5.8°C), tends to be the coldest of the year.Humidity
In Round Rock, the average relative humidity in January is 66%.Rainfall
In Round Rock, in January, it is raining for 8.3 days, with typically 1.5" (38mm) of accumulated precipitation. In Round Rock, during the entire year, the rain falls for 139.3 days and collects up to 26.18" (665mm) of precipitation.Snowfall
Months with snowfall in Round Rock are January and February. January is the first month it typically snows. Throughout January, in the average 0.5 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Round Rock, there are 1.7 snowfall days, and 0.31" (8mm) of snow is accumulated.Daylight
The average length of the day in January is 10h and 26min.On the first day of the month, sunrise is at 7:27 am and sunset at 5:40 pm. On the last day of January, in Round Rock, sunrise is at 7:22 am and sunset at 6:05 pm CST.
Sunshine
The average sunshine in January in Round Rock is 6.1h.UV index
In January, the average daily maximum UV index in Round Rock, Texas, is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during January translates into the following directions:
Be vigilant - Suggestions to stave off sun damage are provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Round Rock, TX
- Average high temperature in January: 58.6°F
The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in January: 42.4°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in January
Round Rock, 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
Round Rock, TX
- Average wind speed in January: 8.9mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).
Average humidity in January
Round Rock, TX
- Average humidity in January: 66%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (59%).
Average rainfall in January
Round Rock, TX
- Average rainfall in January: 1.5"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in January
Round Rock, TX
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in January
Round Rock, TX
- Average snowfall in January: 0.08"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in January
Round Rock, TX
- Average snowfall days in January: 0.5 days
The month with the highest number of snowfall days is February (0.8 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
Round Rock, TX
- Average daylight in January: 10h and 24min
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 January: 6h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in January
Round Rock, TX
- Average sunshine days in January: 21.1 days
The month with the most sunshine days is January (21.1 days).
The months with the least sunshine days are April, May and September (13.3 days).
Average UV index in January
Round Rock, TX
- Average UV index in January: 4
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 January
Round Rock, TX
- Average cloud cover in January: 34
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in January
Round Rock, 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).
