January weather forecast
Sun Valley, AZ

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Weather in January

January, like December, is another chilly winter month in Sun Valley, Arizona, with an average temperature varying between 46.8°F (8.2°C) and 29.8°F (-1.2°C).

Temperature

January is the coldest month, exhibiting average temperatures of 46.8°F (8.2°C) at the peak and 29.8°F (-1.2°C) at the base.

Humidity

January is the most humid month in Sun Valley, with an average relative humidity of 59%.

Rainfall

In January, the rain falls for 5 days. Throughout January, 0.67" (17mm) of precipitation is accumulated. In Sun Valley, during the entire year, the rain falls for 74.3 days and collects up to 7.2" (183mm) of precipitation.

Snowfall

Months with snowfall in Sun Valley are January through April, November and December. In January, in Sun Valley, Arizona, it is snowing for 2.9 days. Throughout January, 1.54" (39mm) of snow is accumulated. In Sun Valley, during the entire year, snow falls for 11.2 days and aggregates up to 5.98" (152mm) of snow.

Daylight

In Sun Valley, the average length of the day in January is 10h and 7min.
On the first day of January, sunrise is at 7:27 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:47 pm MST.

Sunshine

The average sunshine in January is 6.9h.

UV index

In January, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 3 translates into these guidelines:
Take necessary precautions - Defending against sun damage is advocated. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
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Frequently asked questions

What time of the year is the coldest in Sun Valley?

With an average high-temperature of 46.8°F (8.2°C) and an average low-temperature of 29.8°F (-1.2°C), January is the coldest month in Sun Valley.

What is the average January temperature in Sun Valley?

The average high-temperature, in January, in Sun Valley, is 46.8°F (8.2°C), while the average low-temperature is 29.8°F (-1.2°C).

What is the most humid month in Sun Valley?

The most humid month in Sun Valley is January, with an average relative humidity of 59%.

What is the average humidity in January in Sun Valley?

In January, the average relative humidity is 59%.

How much does it rain in Sun Valley in January?

In January, the rain falls for 5 days. Throughout January, 0.67" (17mm) of precipitation is accumulated.

How much does it snow in Sun Valley in January?

In Sun Valley, Arizona, in January, during 2.9 snowfall days, 1.54" (39mm) of snow is typically accumulated.

How many hours of daylight does Sun Valley have in January?

In Sun Valley, Arizona, the average day length in January is 10h and 7min.

When is the sunrise / sunset in January in Sun Valley?

On the first day of January, sunrise is at 7:27 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:47 pm MST.

How long on average sun shines in January in Sun Valley?

In Sun Valley, the average sunshine duration in January is 6.9h.

What is the UV index reading in January in Sun Valley?

In Sun Valley, the average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Sun Valley, AZ

Average temperature in January - Sun Valley, AZ
  • Average high temperature in January: 46.8°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (46.8°F).

  • Average low temperature in January: 29.8°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

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Average pressure in January
Sun Valley, AZ

Average pressure in January - Sun Valley, AZ
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).

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Average wind speed in January
Sun Valley, AZ

Average wind speed in January - Sun Valley, AZ
  • Average wind speed in January: 6.1mph

The windiest months (with the highest average wind speed) are April and May (10.6mph).
The calmest month (with the lowest average wind speed) is January (6.1mph).

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Average humidity in January
Sun Valley, AZ

Average humidity in January - Sun Valley, AZ
  • Average humidity in January: 59%

The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).

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Average rainfall in January
Sun Valley, AZ

Average rainfall in January - Sun Valley, AZ
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.16").

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Average rainfall days in January
Sun Valley, AZ

Average rainfall days in January - Sun Valley, AZ
  • Average rainfall days in January: 5 days

The month with the highest number of rainy days is July (13.3 days).
The months with the least rainy days are June and November (3.4 days).

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Average snowfall in January
Sun Valley, AZ

Average snowfall in January - Sun Valley, AZ
  • Average snowfall in January: 1.54"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Sun Valley, AZ

Average snowfall days in January - Sun Valley, AZ
  • Average snowfall days in January: 2.9 days

The month with the highest number of snowfall days is December (3.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Sun Valley, AZ

Average daylight in January / Average sunshine in January - Sun Valley, AZ
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in January: 6h and 5min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in January
Sun Valley, AZ

Average sunshine days in January - Sun Valley, AZ
  • Average sunshine days in January: 23.9 days

The months with the most sunshine days are May, June and November (25.3 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in January
Sun Valley, AZ

Average UV index in January - Sun Valley, AZ
  • Average UV index in January: 3

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in January
Sun Valley, AZ

Average cloud cover in January - Sun Valley, AZ
  • Average cloud cover in January: 22

The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 9).

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Average visibility in January
Sun Valley, AZ

Average visibility in January - Sun Valley, 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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Sun Valley, Arizona, USA

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