January weather forecast
South Tucson, AZ

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Weather in January

January, the same as December, is another refreshing winter month in South Tucson, Arizona, with an average temperature fluctuating between 61.7°F (16.5°C) and 43°F (6.1°C).

Temperature

South Tucson transitions into January recording an average high-temperature of a still refreshing 61.7°F (16.5°C), closely aligning with the preceding month's temperature. In January, South Tucson experiences a temperature dip to an average of 43°F (6.1°C) at night.

Humidity

In South Tucson, Arizona, the average relative humidity in January is 42%.

Rainfall

In January, the rain falls for 4.9 days. Throughout January, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 66.1 rainfall days, and 7.95" (202mm) of precipitation is accumulated.

Snowfall

The only month with snowfall is January. The month with the most snowfall is January, when snow falls for 0.2 days and typically aggregates up to 0.08" (2mm) of snow.

Daylight

In South Tucson, the average length of the day in January is 10h and 19min.
On the first day of the month, sunrise is at 7:24 am and sunset at 5:29 pm. On the last day of January, sunrise is at 7:18 am and sunset at 5:56 pm MST.

Sunshine

In South Tucson, the average sunshine in January is 7.1h.

UV index

The average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 4 during January translates into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average January temperature?

The high-temperature during January is 61.7°F (16.5°C) and the low-temperature is 43°F (6.1°C).

What is the average humidity in January?

The average relative humidity in January is 42%.

How many days does it rain in January?

In South Tucson, in January, during 4.9 rainfall days, 0.79" (20mm) of precipitation is typically accumulated.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 0.2 days and typically aggregates up to 0.08" (2mm) of snow.

When does it start to snow?

January is the first month it typically snows. Throughout January, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does South Tucson have in January?

The average day length in January is 10h and 19min.

What time are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:24 am and sunset at 5:29 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:56 pm MST.

How many hours of sunshine does South Tucson have in January?

In South Tucson, the average sunshine duration in January is 7.1h.

How high is the UV index in January?

In South Tucson, the average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
South Tucson, AZ

Average temperature in January - South Tucson, AZ
  • Average high temperature in January: 61.7°F

The warmest month (with the highest average high temperature) is June (96.6°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in January: 43°F

The month with the highest average low temperature is July (77°F).
The coldest months (with the lowest average low temperature) are January and December (43°F).

Average pressure in January
South Tucson, AZ

Average pressure in January - South Tucson, AZ
  • Average pressure in January: 30.08"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in January
South Tucson, AZ

Average wind speed in January - South Tucson, AZ
  • Average wind speed in January: 6.2mph

The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in January
South Tucson, AZ

Average humidity in January - South Tucson, AZ
  • Average humidity in January: 42%

The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (19%).

Average rainfall in January
South Tucson, AZ

Average rainfall in January - South Tucson, AZ
  • Average rainfall in January: 0.79"

The wettest month (with the highest rainfall) is July (1.42").
The driest month (with the least rainfall) is May (0.08").

Average rainfall days in January
South Tucson, AZ

Average rainfall days in January - South Tucson, AZ
  • Average rainfall days in January: 4.9 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is May (1.3 days).

Average snowfall in January
South Tucson, AZ

Average snowfall in January - South Tucson, AZ
  • Average snowfall in January: 0.08"

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in January
South Tucson, AZ

Average snowfall days in January - South Tucson, AZ
  • Average snowfall days in January: 0.2 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in January /
Average sunshine in January
South Tucson, AZ

Average daylight in January / Average sunshine in January - South Tucson, AZ
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in January: 7h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in January
South Tucson, AZ

Average sunshine days in January - South Tucson, AZ
  • Average sunshine days in January: 26.1 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in January
South Tucson, AZ

Average UV index in January - South Tucson, AZ
  • Average UV index in January: 4

The month with the highest UV index is June (UV index 8).
The months with the lowest UV index are November and December (UV index 3).

Average cloud cover in January
South Tucson, AZ

Average cloud cover in January - South Tucson, AZ
  • Average cloud cover in January: 17

The month with the most cloud cover is December (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 7).

Average visibility in January
South Tucson, AZ

Average visibility in January - South Tucson, 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).

South Tucson, Arizona, USA

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