January weather forecast and climate
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, the same as December, is another enjoyable winter month in Tucson, Arizona, with average temperature varying between 61.7°F (16.5°C) and 43°F (6.1°C).

Temperature

In January, the average high-temperature is almost the same as in December - a still enjoyable 61.7°F (16.5°C). In January, the average low-temperature is 43°F (6.1°C).

Humidity

The average relative humidity in Tucson 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, there are 66.1 rainfall days, and 7.95" (202mm) of precipitation is accumulated.

Snowfall

The only month with snowfall in Tucson, Arizona, is January. The month with the most snowfall in Tucson 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 10.3h.

Sunshine

The average sunshine in January 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 the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for 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?

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

What is the average humidity in January in Tucson?

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

How many days does it rain in January in Tucson?

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

When does it start snowing in Tucson?

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

What is the snowiest month in Tucson?

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

What is the average length of the day in January in Tucson?

In Tucson, Arizona, the average length of the day in January is 10.3h.

How long on average sun shines in January in Tucson?

In Tucson, Arizona, the average sunshine in January 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 reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 10.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in January: 7.1h

The month with the most sunshine is August (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7h).

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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).
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).
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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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