January weather forecastRound Rock, AZ
January
Weather in January
January, like December, in Round Rock, Arizona, is an icy winter month, with an average temperature varying between 38.8°F (3.8°C) and 24.6°F (-4.1°C).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
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 42min
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).
