Climate and monthly weather forecastAlto, AZ
Climate and monthly weather forecast
Weather in January
January, the same as December, in Alto, Arizona, is another mild winter month, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 40.5°F (4.7°C). Alto's average high-temperature in January is a still moderate 60.4°F (15.8°C), indicating a subtle variation from December. Weather in January »Weather in February
The last month of the winter, February, is an enjoyable month in Alto, Arizona, with an average temperature fluctuating between 41.7°F (5.4°C) and 61.5°F (16.4°C). The onset of February brings with it an average high-temperature of an enjoyable 61.5°F (16.4°C), showing a negligible variation from the month before. Weather in February »Weather in March
The first month of the spring, March, is an agreeable month in Alto, Arizona, with an average temperature ranging between min 46.9°F (8.3°C) and max 68.5°F (20.3°C). The beginning of March marks a minor shift in the average high-temperature, moving from February's enjoyable 61.5°F (16.4°C) to a pleasant 68.5°F (20.3°C). Weather in March »Weather in April
April is a moderately hot spring month in Alto, Arizona, with an average temperature fluctuating between 74.3°F (23.5°C) and 50.4°F (10.2°C). With the onset of April, Alto's average high-temperature experiences a slight rise, moving from March's agreeable 68.5°F (20.3°C) to a moderately hot 74.3°F (23.5°C). Weather in April »Weather in May
The last month of the spring, May, is also a moderately hot month in Alto, Arizona, with an average temperature fluctuating between 81.3°F (27.4°C) and 55.2°F (12.9°C). Alto's transition into May sees a mild rise in the average high-temperature, edging from 74.3°F (23.5°C) in April to a still warm 81.3°F (27.4°C). Weather in May »Weather in June
June, the first month of the summer in Alto, is a hot month, with an average temperature fluctuating between 91°F (32.8°C) and 65.3°F (18.5°C). With average high temperatures of 91°F (32.8°C) and lows of 65.3°F (18.5°C), June is the warmest month. Weather in June »Weather in July
July, the same as June, in Alto, Arizona, is another hot summer month, with temperature in the range of an average low of 70.2°F (21.2°C) and an average high of 87.4°F (30.8°C). The commencement of July introduces an average high-temperature of a still hot 87.4°F (30.8°C), closely mirroring the preceding month. Weather in July »Weather in August
The last month of the summer, August, is another hot month in Alto, Arizona, with an average temperature fluctuating between 68.4°F (20.2°C) and 87.1°F (30.6°C). Alto transitions into August recording an average high-temperature of a still tropical 87.1°F (30.6°C), closely aligning with the preceding month's temperature. Weather in August »Weather in September
September, the first month of the autumn in Alto, is still a warm month, with an average temperature ranging between min 64.6°F (18.1°C) and max 83.7°F (28.7°C). The arrival of September records an average high-temperature of a moderately hot 83.7°F (28.7°C), closely related to the 87.1°F (30.6°C) observed in August. Weather in September »Weather in October
October, like September, in Alto, Arizona, is a moderately hot autumn month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 77.2°F (25.1°C). The arrival of October suggests a slight decrease in the average high-temperature, moving from 83.7°F (28.7°C) in September to a still warm 77.2°F (25.1°C). Weather in October »Weather in November
The last month of the autumn, November, is also an enjoyable month in Alto, Arizona, with an average temperature fluctuating between 46.6°F (8.1°C) and 67.6°F (19.8°C). Alto's transition into November involves a shift in temperature, receding from a warm 77.2°F (25.1°C) in October to a comfortable 67.6°F (19.8°C). Weather in November »Weather in December
The first month of the winter, December, is still a refreshing month in Alto, Arizona, with an average temperature fluctuating between 59.2°F (15.1°C) and 39.9°F (4.4°C). With an average high-temperature of 59.2°F (15.1°C) and an average low-temperature of 39.9°F (4.4°C), December is the coldest month. Weather in December »Updated: Aug 17, 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
Throughout the year, there are 87.8 rainfall days, and 15.43" (392mm) of precipitation is accumulated.
Months with snowfall are January through March and December.
Throughout the year, there are 2.1 snowfall days, and 2.32" (59mm) of snow is accumulated.
January, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
April through November are months without snowfall.
The months with the lowest humidity are May and June, with an average relative humidity of 24%.
May is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.16" (4mm) of precipitation.
June is the month when Alto's temperatures reach their peak, with averages of 91°F (32.8°C) and lows of 65.3°F (18.5°C).
The month with the longest days is June, with an average of 14h and 12min of daylight.
The month with the most sunshine is June, with an average of 12h of sunshine.
June and August, with an average maximum UV index of 7, are months with the highest UV index.
July is the month with the most rainfall. Rain falls for 21.9 days and accumulates 4.53" (115mm) of precipitation.
The most humid month is August, with an average relative humidity of 51%.
Alto's coldest month, December, registers temperatures that range from a high of 59.2°F (15.1°C) to a low of 39.9°F (4.4°C).
December is the month with the most snowfall. Snow falls for 0.7 days and accumulates 1.06" (27mm) of snow.
December has the shortest days of the year in Alto, with an average of 10h and 6min of daylight.
Alto does not utilize Daylight Saving Time (DST). MST timezone is used over the entire year.
With an average of 6.9h of sunshine, December has the least sunshine of the year.
Average temperature
Alto, AZ
The warmest month (with the highest average high temperature) is June (91°F).
The month with the lowest average high temperature is December (59.2°F).
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).
Average pressure
Alto, AZ
- Average pressure in January:
30.06"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
29.96"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.85"Hg - Average pressure in June:
29.82"Hg
- Average pressure in July:
29.88"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.87"Hg - Average pressure in October:
29.91"Hg - Average pressure in November:
30"Hg - Average pressure in December:
30.03"Hg
The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed
Alto, AZ
- Average wind speed in January:
6.5mph - Average wind speed in February:
7.6mph - Average wind speed in March:
8.5mph - Average wind speed in April:
9.8mph - Average wind speed in May:
9.9mph - Average wind speed in June:
8.7mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
5.2mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7mph - Average wind speed in November:
7.3mph - Average wind speed in December:
6.8mph
The windiest month (with the highest average wind speed) is May (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity
Alto, AZ
The month with the highest relative humidity is August (51%).
The months with the lowest relative humidity are May and June (24%).
Average rainfall
Alto, AZ
- Average rainfall in January:
0.63" - Average rainfall in February:
0.83" - Average rainfall in March:
0.51" - Average rainfall in April:
0.2" - Average rainfall in May:
0.16" - Average rainfall in June:
0.39"
- Average rainfall in July:
4.53" - Average rainfall in August:
3.86" - Average rainfall in September:
2.32" - Average rainfall in October:
0.47" - Average rainfall in November:
0.83" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is May (0.16").
Average rainfall days
Alto, AZ
- Average rainfall days in January:
4.7 days - Average rainfall days in February:
4.5 days - Average rainfall days in March:
4.3 days - Average rainfall days in April:
3.1 days - Average rainfall days in May:
1.8 days - Average rainfall days in June:
3.8 days
- Average rainfall days in July:
21.9 days - Average rainfall days in August:
18.3 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
4.7 days - Average rainfall days in November:
2.8 days - Average rainfall days in December:
5.7 days
The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is May (1.8 days).
Average snowfall
Alto, AZ
The month with the highest snowfall is December (1.06").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Alto, AZ
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
0.8 days - Average snowfall days in March:
0.2 days - Average snowfall days in April:
0 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 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.7 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Alto, AZ
- Average daylight in January:
10h and 24min - Average daylight in February:
11h and 6min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 48min - Average daylight in June:
14h and 12min
- Average daylight in July:
14h and 0min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 36min - Average daylight in December:
10h and 6min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in January:
7h and 6min - Average sunshine in February:
8h and 54min - Average sunshine in March:
9h and 12min - Average sunshine in April:
10h and 54min - Average sunshine in May:
11h and 54min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 54min - Average sunshine in September:
9h and 36min - Average sunshine in October:
7h and 54min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 54min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days
Alto, AZ
- Average sunshine days in January:
25.8 days - Average sunshine days in February:
23.3 days - Average sunshine days in March:
26.8 days - Average sunshine days in April:
27.2 days - Average sunshine days in May:
28.8 days - Average sunshine days in June:
24.3 days
- Average sunshine days in July:
6.6 days - Average sunshine days in August:
8 days - Average sunshine days in September:
15 days - Average sunshine days in October:
24.3 days - Average sunshine days in November:
26.4 days - Average sunshine days in December:
24.4 days
The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is July (6.6 days).
Average UV index
Alto, AZ
The months with the highest UV index are June and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover
Alto, AZ
The month with the most cloud cover is July (Cloud cover 24).
The month with the least cloud cover is May (Cloud cover 7).
Average visibility
Alto, 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).
