January weather forecast and climate
Tempe, AZ

The Tempe Town Lake of Tempe City, Arizona
The Tempe Town Lake of Tempe City, Arizona

Weather in January

January, like December, in Tempe, Arizona, is another comfortable winter month, with average temperature ranging between max 64°F (17.8°C) and min 46.9°F (8.3°C).

Temperature

In Tempe, the average high-temperature is relatively the same as in December - a still enjoyable 64°F (17.8°C). In January, in Tempe, the average low-temperature is 46.9°F (8.3°C).

Humidity

The average relative humidity in Tempe is 43%.

Rainfall

In Tempe, during 4.3 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Tempe, during the entire year, the rain falls for 57.7 days and collects up to 7.72" (196mm) of precipitation.

Daylight

In Tempe, the average length of the day is 10.2h.

Sunshine

In Tempe, the average sunshine is 7.1h.

UV index

In Tempe, Arizona, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in January in Tempe?

The average high-temperature, in January, in Tempe, Arizona, is 64°F (17.8°C), while the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in January in Tempe?

In January, the average relative humidity in Tempe, Arizona, is 43%.

How many days does it rain in January in Tempe?

In January, in Tempe, the rain falls for 4.3 days. Throughout January, 0.59" (15mm) of precipitation is accumulated.

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

The average length of the day in January is 10.2h.

How long on average sun shines in January in Tempe?

The average sunshine in January in Tempe is 7.1h.

What is the UV index intensity in January in Tempe?

In Tempe, the average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in January
Tempe, AZ

Average temperature in January - Tempe, AZ
  • Average high temperature in January: 64°F

The warmest month (with the highest average high temperature) is July (102.6°F).
The month with the lowest average high temperature is December (62.8°F).

  • Average low temperature in January: 46.9°F

The month with the highest average low temperature is August (84.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).

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Average pressure in January
Tempe, AZ

Average pressure in January - Tempe, AZ
  • Average pressure in January: 30.09"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.81").

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Average wind speed in January
Tempe, AZ

Average wind speed in January - Tempe, AZ
  • Average wind speed in January: 4.6mph

The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).

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Average humidity in January
Tempe, AZ

Average humidity in January - Tempe, AZ
  • Average humidity in January: 43%

The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (16%).

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Average rainfall in January
Tempe, AZ

Average rainfall in January - Tempe, AZ
  • Average rainfall in January: 0.59"

The wettest month (with the highest rainfall) is July (1.14").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in January
Tempe, AZ

Average rainfall days in January - Tempe, AZ
  • Average rainfall days in January: 4.3 days

The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is June (1 days).

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Average daylight in January /
Average sunshine in January
Tempe, AZ

Average daylight in January / Average sunshine in January - Tempe, AZ
  • Average daylight in January: 10.2h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in January: 7.1h

Months with the most sunshine are June and August (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in January
Tempe, AZ

Average sunshine days in January - Tempe, AZ
  • Average sunshine days in January: 26 days

The month with the most sunshine days is May (28.7 days).
The month with the least sunshine days is July (16.8 days).

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Average UV index in January
Tempe, AZ

Average UV index in January - Tempe, AZ
  • Average UV index in January: 4

Months with the highest UV index are May, June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
Tempe, AZ

Average cloud cover in January - Tempe, AZ
  • Average cloud cover in January: 18

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in January
Tempe, AZ

Average visibility in January - Tempe, 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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