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
Round Rock's coldest weather arrives in January, when temperatures average a high of 38.8°F (3.8°C) and a low of 24.6°F (-4.1°C).Humidity
January is the most humid month, with an average relative humidity of 67%.Rainfall
In Round Rock, in January, it is raining for 4.1 days, with typically 0.59" (15mm) of accumulated precipitation. In Round Rock, Arizona, during the entire year, the rain falls for 75.5 days and collects up to 7.91" (201mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Round Rock, Arizona, in January, snow falls for 5.8 days, with typically accumulated 3.35" (85mm) of snow. In Round Rock, Arizona, during the entire year, snow falls for 20.3 days and aggregates up to 12.52" (318mm) of snow.Daylight
The average length of the day in January in Round Rock is 10h and 0min.On the first day of January, sunrise is at 7:29 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:42 pm MST.
Sunshine
January has the least sunshine of the year in Round Rock, with an average of 6.7h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Round Rock. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Round Rock?
Is it cold in Round Rock during January?
What is the most humid month in Round Rock?
What is the average humidity in January in Round Rock?
How much does it rain in Round Rock in January?
How many days does it snow in January in Round Rock?
How many hours of daylight does Round Rock have in January?
When are sunrise and sunset in January in Round Rock?
What is the month with the least sunshine in Round Rock?
How long on average sun shines in January in Round Rock?
When is the lowest UV index in Round Rock?
What is the UV index reading in January in Round Rock?
Average temperature in January
Round Rock, AZ
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in January: 24.6°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in January
Round Rock, AZ
- Average pressure in January: 30.2"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in January
Round Rock, AZ
- Average wind speed in January: 5.5mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in January
Round Rock, AZ
- Average humidity in January: 67%
The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is June (19%).
Average rainfall in January
Round Rock, AZ
- Average rainfall in January: 0.59"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in January
Round Rock, AZ
- Average rainfall days in January: 4.1 days
The month with the highest number of rainy days is July (13.7 days).
The months with the least rainy days are February and June (3.3 days).
Average snowfall in January
Round Rock, AZ
- Average snowfall in January: 3.35"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Round Rock, AZ
- Average snowfall days in January: 5.8 days
The months with the highest number of snowfall days are January and December (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Round Rock, AZ
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 6h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days in January
Round Rock, AZ
- Average sunshine days in January: 22.5 days
The month with the most sunshine days is June (25.4 days).
The month with the least sunshine days is July (13.2 days).
Average UV index in January
Round Rock, AZ
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Round Rock, AZ
- Average cloud cover in January: 24
The months with the most cloud cover are January and December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 9).
Average visibility in January
Round Rock, AZ
- 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).
Round Rock, Arizona, USA
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