Climate and monthly weather forecast
Sun Valley, AZ

Share

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). 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. Weather in January »

Weather in February

February, the last month of the winter in Sun Valley, is a cool month, with an average temperature ranging between min 33.4°F (0.8°C) and max 52.3°F (11.3°C). With the onset of February, Sun Valley's average high-temperature sees a modest rise, moving from January's chilly 46.8°F (8.2°C) to a cool 52.3°F (11.3°C). Weather in February »

Weather in March

March, the first month of the spring in Sun Valley, is a comfortable month, with an average temperature varying between 61.9°F (16.6°C) and 40.3°F (4.6°C). Sun Valley's weather shows a temperature rise with the arrival of March, moving from a cool 52.3°F (11.3°C) in February to a refreshing 61.9°F (16.6°C). Weather in March »

Weather in April

April is a pleasant spring month in Sun Valley, Arizona, with an average temperature varying between 68.5°F (20.3°C) and 45.3°F (7.4°C). The arrival of April introduces a minor uplift in high-temperatures, adjusting from an enjoyable 61.9°F (16.6°C) in March to a pleasant 68.5°F (20.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Sun Valley, Arizona, with an average temperature fluctuating between 52.7°F (11.5°C) and 76.8°F (24.9°C). The start of May signals a slight increase in the average high-temperature, moving from a pleasant 68.5°F (20.3°C) in April to a moderately hot 76.8°F (24.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Sun Valley, Arizona, with an average temperature ranging between max 89.2°F (31.8°C) and min 64°F (17.8°C). The beginning of June marks a shift in the average high-temperature, moving from May's warm 76.8°F (24.9°C) to a hot 89.2°F (31.8°C). Weather in June »

Weather in July

July, like June, is another tropical summer month in Sun Valley, Arizona, with an average temperature varying between 90.1°F (32.3°C) and 70.5°F (21.4°C). July is the warmest month, with an average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 70.5°F (21.4°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Sun Valley, Arizona, with an average temperature varying between 69.3°F (20.7°C) and 88.3°F (31.3°C). Sun Valley's average high-temperature in August is a still hot 88.3°F (31.3°C), marking an insignificant difference from the 90.1°F (32.3°C) of July. Weather in August »

Weather in September

September, the first month of the autumn in Sun Valley, is also a moderately hot month, with an average temperature fluctuating between 62.6°F (17°C) and 82.4°F (28°C). A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a hot 88.3°F (31.3°C) to a moderately hot 82.4°F (28°C). Weather in September »

Weather in October

October, the same as September, in Sun Valley, Arizona, is an agreeable autumn month, with temperature in the range of an average high of 70.5°F (21.4°C) and an average low of 50.2°F (10.1°C). Onset of October comes with a temperature decline, the average high falling from a warm 82.4°F (28°C) in September to an agreeable 70.5°F (21.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Sun Valley, is also a moderate month, with temperature in the range of an average high of 59.2°F (15.1°C) and an average low of 38.8°F (3.8°C). November shows a mild decline in the average high-temperature, falling from October's pleasant 70.5°F (21.4°C) to a moderate 59.2°F (15.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Sun Valley, Arizona, with an average temperature varying between 30.9°F (-0.6°C) and 47.7°F (8.7°C). December's arrival corresponds with a decrease in average high-temperatures, from November's moderate 59.2°F (15.1°C) to a frosty 47.7°F (8.7°C). Weather in December »
[Resources]

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, Arizona.

What is the most humid month in Sun Valley?

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

How many days does it rain in Sun Valley?

Throughout the year, there are 74.3 rainfall days, and 7.2" (183mm) of precipitation is accumulated.

When does it snow in Sun Valley?

January through April, November and December are months with snowfall in Sun Valley.

How much does it snow in Sun Valley?

In Sun Valley, Arizona, during the entire year, snow falls for 11.2 days and aggregates up to 5.98" (152mm) of snow.

When does it snow the most in Sun Valley?

The month with the most snowfall in Sun Valley is February, when snow falls for 2.8 days and typically aggregates up to 2.17" (55mm) of snow.

When it does not snow in Sun Valley?

May through October are months without snowfall in Sun Valley.

What is the least humid month in Sun Valley?

The least humid month in Sun Valley, Arizona, is June, with an average relative humidity of 18%.

What is the driest month in Sun Valley?

The month with the least rainfall in Sun Valley is June, when the rain falls for 3.4 days and typically collects 0.16" (4mm) of precipitation.

When are the longest days in Sun Valley?

With an average of 14h and 30min of daylight, June has the longest days of the year in Sun Valley, Arizona.

What is the month with the highest UV index in Sun Valley?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Sun Valley.

What are the warmest months in Sun Valley?

In Sun Valley, Arizona, the peak temperatures are generally noted in July, averaging a high of 90.1°F (32.3°C) and a low of 70.5°F (21.4°C).

What is the wettest month in Sun Valley?

The month with the most rainfall in Sun Valley, Arizona, is July, when the rain falls for 13.3 days and typically aggregates up to 1.1" (28mm) of precipitation.

What month has the most sunshine in Sun Valley?

The month with the most sunshine is August, with an average of 12.2h of sunshine.

What is the month with the shortest days in Sun Valley?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

Is there Daylight Saving Time (DST) in Sun Valley?

Sun Valley does not observe Daylight Saving Time (DST). MST timezone is used throughout the entire year.

What is the month with the least sunshine in Sun Valley?

With an average of 6.8h of sunshine, December has the least sunshine of the year.

What is the month with the lowest UV index in Sun Valley?

With an average maximum UV index of 2, December is the month with the lowest UV index.

Average temperature
Sun Valley, AZ

Average temperature - Sun Valley, AZ

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).

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).

[Resources]

Average pressure
Sun Valley, AZ

Average pressure - Sun Valley, AZ

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).

[Resources]

Average wind speed
Sun Valley, AZ

Average wind speed - Sun Valley, AZ

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).

[Resources]

Average rainfall
Sun Valley, AZ

Average rainfall - Sun Valley, AZ

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

[Resources]

Average rainfall days
Sun Valley, AZ

Average rainfall days - Sun Valley, AZ

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).

[Resources]

Average snowfall
Sun Valley, AZ

Average snowfall - Sun Valley, AZ

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").

[Resources]

Average snowfall days
Sun Valley, AZ

Average snowfall days - Sun Valley, AZ

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).

[Resources]

Average daylight / Average sunshine
Sun Valley, AZ

Average daylight / Average sunshine - Sun Valley, AZ

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).

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).

[Resources]

Average sunshine days
Sun Valley, AZ

Average sunshine days - Sun Valley, AZ

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).

[Resources]

Average visibility
Sun Valley, AZ

Average visibility - Sun Valley, AZ

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).

[Resources]

Sun Valley, Arizona, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location