Climate and monthly weather forecastSun Valley, AZ
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Sun Valley, Arizona, with an average temperature ranging between min 29.8°F (-1.2°C) and max 46.8°F (8.2°C). During the coldest month, January, temperatures average a high of 46.8°F (8.2°C) and a low of 29.8°F (-1.2°C). Weather in January »Weather in February
February, the last month of the winter in Sun Valley, is a cool month, with an average temperature varying between 52.3°F (11.3°C) and 33.4°F (0.8°C). As Sun Valley welcomes February, the average high-temperature sees a modest rise, transitioning from a frosty 46.8°F (8.2°C) in January 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 temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 61.9°F (16.6°C). Entering March, Sun Valley sees a temperature rise, with the average high-temperature advancing from February's cool 52.3°F (11.3°C) to an enjoyable 61.9°F (16.6°C). Weather in March »Weather in April
April is an agreeable spring month in Sun Valley, Arizona, with an average temperature varying between 45.3°F (7.4°C) and 68.5°F (20.3°C). A slight uplift of average high-temperatures is noted in April, with temperatures adjusting from a refreshing 61.9°F (16.6°C) in March to an agreeable 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 varying between 52.7°F (11.5°C) and 76.8°F (24.9°C). May's arrival sees a mild rise in the average high-temperature, transitioning from April's agreeable 68.5°F (20.3°C) to a warm 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 varying between 64°F (17.8°C) and 89.2°F (31.8°C). June's arrival sees a rise in the average high-temperature, jumping 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 70.5°F (21.4°C) and 90.1°F (32.3°C). July is the month that records the highest temperatures, with averages ranging from a high of 90.1°F (32.3°C) to a low of 70.5°F (21.4°C). Weather in July »Weather in August
August, the last month of the summer in Sun Valley, is also a hot month, with an average temperature varying between 69.3°F (20.7°C) and 88.3°F (31.3°C). Sun Valley in August witnesses an average high-temperature of a still hot 88.3°F (31.3°C), indicating a slight variation from July's 90.1°F (32.3°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Sun Valley, Arizona, with an average temperature ranging between max 82.4°F (28°C) and min 62.6°F (17°C). September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a hot 88.3°F (31.3°C) in August 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 another pleasant autumn month, with an average temperature ranging between min 50.2°F (10.1°C) and max 70.5°F (21.4°C). During Sun Valley's transition into October, the average high-temperature lessens, moving from a moderately hot 82.4°F (28°C) in September to a pleasant 70.5°F (21.4°C). Weather in October »Weather in November
The last month of the autumn, November, is another mild month in Sun Valley, Arizona, with an average temperature varying between 38.8°F (3.8°C) and 59.2°F (15.1°C). November suggests a modest reduction in the average high-temperature, shifting from a pleasant 70.5°F (21.4°C) in October to a refreshing 59.2°F (15.1°C). Weather in November »Weather in December
December, the first month of the winter in Sun Valley, is also a frosty month, with temperature in the range of an average high of 47.7°F (8.7°C) and an average low of 30.9°F (-0.6°C). The arrival of December signals a shift in temperature, down from a moderate 59.2°F (15.1°C) in November to a chilly 47.7°F (8.7°C). Weather in December »Updated: Aug 6, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The month of January, characterized by an average high of 46.8°F (8.2°C) and a low of 29.8°F (-1.2°C), is recognized as the coldest.
The most humid month is January, with an average relative humidity of 59%.
Throughout the year, there are 74.3 rainfall days, and 7.2" (183mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
In Sun Valley, during the entire year, snow falls for 11.2 days and aggregates up to 5.98" (152mm) of snow.
February is the month with the most snowfall. Snow falls for 2.8 days and accumulates 2.17" (55mm) of snow.
May through October are months without snowfall.
June is the least humid month, with an average relative humidity of 18%.
June is the month with the least rainfall. Rain falls for 3.4 days and accumulates 0.16" (4mm) of precipitation.
June has the longest days of the year, with an average of 14h and 30min of daylight.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
July, noted for its average high-temperature of 90.1°F (32.3°C) and an average low-temperature of 70.5°F (21.4°C), is considered the warmest month.
July is the month with the most rainfall. Rain falls for 13.3 days and accumulates 1.1" (28mm) of precipitation.
August has the most sunshine of the year, with an average of 12.2h of sunshine.
December has the shortest days of the year, with an average of 9h and 54min of daylight.
Sun Valley, Arizona, does not utilize Daylight Saving Time (DST). MST timezone is used over the entire year.
With an average of 6.8h of sunshine, December has the least sunshine of the year.
The month with the lowest UV index is December, with an average maximum UV index of 2.
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).
Average pressure
Sun Valley, AZ
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.88"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"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).
Average wind speed
Sun Valley, AZ
- Average wind speed in January:
6.1mph - Average wind speed in February:
8mph - Average wind speed in March:
9.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
10.6mph - Average wind speed in June:
9.9mph
- Average wind speed in July:
8.1mph - Average wind speed in August:
7.6mph - Average wind speed in September:
7.7mph - Average wind speed in October:
7.6mph - Average wind speed in November:
7.5mph - Average wind speed in December:
6.9mph
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).
Average humidity
Sun Valley, AZ
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).
Average rainfall
Sun Valley, AZ
- Average rainfall in January:
0.67" - Average rainfall in February:
0.67" - Average rainfall in March:
0.47" - Average rainfall in April:
0.31" - Average rainfall in May:
0.31" - Average rainfall in June:
0.16"
- Average rainfall in July:
1.1" - Average rainfall in August:
0.91" - Average rainfall in September:
0.79" - Average rainfall in October:
0.63" - Average rainfall in November:
0.55" - Average rainfall in December:
0.63"
The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.16").
Average rainfall days
Sun Valley, AZ
- Average rainfall days in January:
5 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
6.1 days - Average rainfall days in April:
5.4 days - Average rainfall days in May:
4.7 days - Average rainfall days in June:
3.4 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
10.6 days - Average rainfall days in September:
7.8 days - Average rainfall days in October:
5.4 days - Average rainfall days in November:
3.4 days - Average rainfall days in December:
5.1 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).
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").
Average snowfall days
Sun Valley, AZ
- Average snowfall days in January:
2.9 days - Average snowfall days in February:
2.8 days - Average snowfall days in March:
1.1 days - Average snowfall days in April:
0.4 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
3.1 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).
Average daylight / Average sunshine
Sun Valley, AZ
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 54min
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 54min - Average sunshine in February:
8h and 6min - Average sunshine in March:
9h and 12min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 42min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
12h and 12min - Average sunshine in September:
10h and 24min - Average sunshine in October:
7h and 42min - Average sunshine in November:
7h and 18min - Average sunshine in December:
6h and 48min
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).
Average sunshine days
Sun Valley, AZ
- Average sunshine days in January:
23.9 days - Average sunshine days in February:
21.9 days - Average sunshine days in March:
24.2 days - Average sunshine days in April:
24.3 days - Average sunshine days in May:
25.3 days - Average sunshine days in June:
25.3 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
16.6 days - Average sunshine days in September:
19.4 days - Average sunshine days in October:
24.8 days - Average sunshine days in November:
25.3 days - Average sunshine days in December:
23.7 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).
Average UV index
Sun Valley, AZ
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).
Average cloud cover
Sun Valley, AZ
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 9).
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).
