January weather forecast
Tucson, AZ

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Sunset in downtown Tucson, Arizona with a skyline and a sentinel peak in the distance
Sunset in downtown Tucson, Arizona with a skyline and a sentinel peak in the distance

Weather in January

Tucson ushers in the New Year with relative temperate weather, indicative of the mild southwestern winters. January is one of the cooler months, propelling the residents into a relaxed pace of life. With the mercury hitting the lowest averages of 43°F (6.1°C) at night, chilling temperatures translate to heating mitts and comforting beverages. Despite this, ostensible shifts in climatic conditions in comparison to February are relatively negligible. A discernible characteristic of Tucson's weather in January is that it is the coldest month with the least amount of daylight hours, amounting to 10.3 hours.

Temperature

January ushers in an average high-temperature of a still comfortable 61.7°F (16.5°C), aligning closely with the preceding month. Tucson's nighttime temperature in January falls to an average of 43°F (6.1°C).

Humidity

In January, the average relative humidity is 42%.

Rainfall

In Tucson, during January, the rain falls for 4.9 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, in Tucson, 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 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 5:55 pm MST.

Sunshine

In January, the average sunshine is 7.1h.

UV index

In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: During January, 4 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Preventing sun damage is advised. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Aug 17, 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, in January, in Tucson, records 61.7°F (16.5°C), while the low-temperature is 43°F (6.1°C).

What is the average humidity in January?

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

How many days does it rain in January?

In Tucson, during January, the rain falls for 4.9 days and regularly aggregates up to 0.79" (20mm) of precipitation.

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 snowing?

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 Tucson have in January?

In January, the average day length is 10h and 19min.

When are sunrise and sunset in January in Tucson?

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 5:55 pm MST.

How many hours of sunshine does Tucson have in January?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
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
Tucson, AZ

Average temperature in January - 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
Tucson, AZ

Average pressure in January - 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
Tucson, AZ

Average wind speed in January - 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
Tucson, AZ

Average humidity in January - 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
Tucson, AZ

Average rainfall in January - 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
Tucson, AZ

Average rainfall days in January - 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
Tucson, AZ

Average snowfall in January - 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
Tucson, AZ

Average snowfall days in January - 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
Tucson, AZ

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

Average sunshine days in January - 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
Tucson, AZ

Average UV index in January - 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
Tucson, AZ

Average cloud cover in January - 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
Tucson, AZ

Average visibility in January - 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).

Tucson, Arizona, USA

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