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 enjoyable winter month, with an average temperature ranging between min 43°F (6.1°C) and max 61.7°F (16.5°C).

Temperature

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

Humidity

The average relative humidity in January is 42%.

Rainfall

In Tucson, during 4.9 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Tucson, Arizona, during the entire year, the rain falls for 66.1 days and collects up to 7.95" (202mm) of precipitation.

Snowfall

January is the only month when snow falls in Tucson. January is the month with the most snowfall. Snow falls for 0.2 days and accumulates 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 5:30 pm. On the last day of January, in Tucson, sunrise is at 7:17 am and sunset at 5:56 pm MST.

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 value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In January, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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, Arizona, 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?

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

How many days does it rain in January in Tucson?

In Tucson, in January, it is raining for 4.9 days, with typically 0.79" (20mm) of accumulated precipitation.

When does it snow the most in Tucson?

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

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.

How many hours of daylight does Tucson have in January?

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

What time are sunrise and sunset in January in Tucson?

On the first day of January in Tucson, Arizona, sunrise is at 7:24 am and sunset at 5:30 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:56 pm MST.

How many hours of sunshine does Tucson have in January?

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

What is the UV index intensity in January in 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 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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