January weather forecast
Tucson, AZ

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

January, like December, in Tucson, Arizona, is another comfortable winter month, with an average temperature fluctuating between 43°F (6.1°C) and 61.7°F (16.5°C).

Temperature

In Tucson, the average high-temperature in January is essentially the same as in December - a still comfortable 61.7°F (16.5°C). The average low-temperature, in Tucson, is 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, Arizona, there are 66.1 rainfall days, and 7.95" (202mm) of precipitation is accumulated.

Snowfall

The only month with snowfall in Tucson 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 January, the average length of the day is 10h and 19min.
On the first day of January, 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.

Sunshine

The average sunshine in January in Tucson is 7.1h.

UV index

In Tucson, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 4 in January interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Tucson?

The average high-temperature, in January, in Tucson, Arizona, is 61.7°F (16.5°C), while the average low-temperature is 43°F (6.1°C).

What is the average humidity in January in Tucson?

The average relative humidity in January in Tucson is 42%.

How much does it rain in Tucson in January?

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

When does it snow the most in Tucson?

January is the month with the most snowfall. Snow falls for 0.2 days and accumulates 0.08" (2mm) of snow.

When does it start to snow in Tucson?

January is the first month it typically snows in Tucson, Arizona. 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?

On the first day of January in Tucson, 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 Tucson have in January?

The average sunshine duration in January in Tucson, Arizona, is 7.1h.

What is the UV index reading in January in Tucson?

The average daily maximum UV index in January in Tucson, Arizona, is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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 19min

The month with the longest days is June (Average daylight: 14h and 14min).
The month with the shortest days is December (Average daylight: 10h and 5min).

  • Average sunshine in January: 7h and 6min

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).

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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).

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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).

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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).

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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).

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