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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another subzero cold winter month in Alta, Iowa, with an average temperature ranging between max 24.6°F (-4.1°C) and min 12.6°F (-10.8°C). January stands out as Alta's coldest month, with an average high-temperature of 24.6°F (-4.1°C) and a low-temperature of 12.6°F (-10.8°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Alta, Iowa, with temperature in the range of an average low of 16.2°F (-8.8°C) and an average high of 28.4°F (-2°C). As January turns into February, the average high-temperatures rest at a still freezing cold 28.4°F (-2°C), showing a minor variation from the prior month. Weather in February »
Weather in March
March, the first month of the spring in Alta, is a chilly month, with an average temperature varying between 44.6°F (7°C) and 30.6°F (-0.8°C). A notable increase in the average high-temperature is observed during March, soaring from a freezing cold 28.4°F (-2°C) in February to a frosty 44.6°F (7°C). Weather in March »
Weather in April
April is a mild spring month in Alta, Iowa, with an average temperature varying between 57.2°F (14°C) and 41.2°F (5.1°C). As March transitions into April, a change in temperatures is observed, with average highs moving from a chilly 44.6°F (7°C) to a mild 57.2°F (14°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Alta, Iowa, with an average temperature fluctuating between 52.3°F (11.3°C) and 68.9°F (20.5°C). May brings a rise in the average high-temperature, transitioning from April's moderate 57.2°F (14°C) to an agreeable 68.9°F (20.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Alta, Iowa, with an average temperature ranging between min 62.2°F (16.8°C) and max 78.3°F (25.7°C). The shift into June is characterized by a rise in the average high-temperature, transitioning from May's pleasant 68.9°F (20.5°C) to a moderately hot 78.3°F (25.7°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Alta, Iowa, with an average temperature ranging between min 64°F (17.8°C) and max 81.3°F (27.4°C). With an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64°F (17.8°C), July is the warmest month. The heat index value during July is estimated at a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Alta, is another warm month, with an average temperature varying between 79°F (26.1°C) and 61.2°F (16.2°C). August's presence marks an average high-temperature of a still moderately hot 79°F (26.1°C), subtly varied from July's 81.3°F (27.4°C). Weather in August »
Weather in September
September, the first month of the autumn in Alta, is also a moderately hot month, with an average temperature varying between 55.2°F (12.9°C) and 73.9°F (23.3°C). During September, the average high-temperature is a still warm 73.9°F (23.3°C), maintaining a close resemblance to that of the preceding month. Weather in September »
Weather in October
October, the same as September, in Alta, Iowa, is a moderate autumn month, with temperature in the range of an average high of 58.1°F (14.5°C) and an average low of 43.2°F (6.2°C). As Alta welcomes October, there is a noticeable shift in the average high-temperature, dropping from September's warm 73.9°F (23.3°C) to a mild 58.1°F (14.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Alta, is also a frosty month, with an average temperature fluctuating between 44.2°F (6.8°C) and 31.5°F (-0.3°C). The onset of November entails a temperature shift, as the average high-temperature decreases from a mild 58.1°F (14.5°C) in October to a chilly 44.2°F (6.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Alta, Iowa, with an average temperature fluctuating between 29.3°F (-1.5°C) and 19.2°F (-7.1°C). Alta's transition into December is marked by a distinct drop in the average high-temperature, reducing from a frosty 44.2°F (6.8°C) in November to a freezing cold 29.3°F (-1.5°C). Weather in December »
Updated: Jul 25, 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
What time of the year is the coldest?
With average temperatures fluctuating between a high of 24.6°F (-4.1°C) and a low of 12.6°F (-10.8°C), January stands out as the coldest month.
What is the most humid month?
January is the most humid month, with an average relative humidity of 85%.
What is the driest month?
January is the month with the least rainfall. Rain falls for 4.1 days and accumulates 0.91" (23mm) of precipitation.
How many days does it rain?
In Alta, during the entire year, the rain falls for 135.1 days and collects up to 26.73" (679mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
In Alta, during the entire year, snow falls for 50 days and aggregates up to 20.04" (509mm) of snow.
What is the month with the least sunshine in Alta?
With an average of 4.1h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index?
January and February, with an average maximum UV index of 1, are months with the lowest UV index.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 10.7 days and accumulates 5.79" (147mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the least humid month?
The months with the lowest humidity are April and October, with an average relative humidity of 68%.
What is the wettest month?
June is the month with the most rainfall. Rain falls for 19 days and accumulates 4.02" (102mm) of precipitation.
When it does not snow?
In Alta, snow does not fall in June through September.
When are the longest days?
With an average of 15h and 18min of daylight, June has the longest days of the year.
When is the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What part of the year is the hottest?
July is the month when Alta experiences its warmest temperatures, averaging a high of 81.3°F (27.4°C) and a low of 64°F (17.8°C).
What month has the most sunshine?
With an average of 10.5h of sunshine, July has the most sunshine of the year.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 6min of daylight.
Average temperature
Alta, IA
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (24.6°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure
Alta, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Alta, IA
- Average wind speed in January:
11.2mph - Average wind speed in February:
11.1mph - Average wind speed in March:
10.8mph - Average wind speed in April:
11.2mph - Average wind speed in May:
9.6mph - Average wind speed in June:
8.7mph
- Average wind speed in July:
7.5mph - Average wind speed in August:
7.7mph - Average wind speed in September:
8.8mph - Average wind speed in October:
10.3mph - Average wind speed in November:
10.8mph - Average wind speed in December:
10.8mph
The windiest months (with the highest average wind speed) are January and April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity
Alta, IA
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall
Alta, IA
- Average rainfall in January:
0.91" - Average rainfall in February:
1.22" - Average rainfall in March:
1.57" - Average rainfall in April:
2.99" - Average rainfall in May:
3.9" - Average rainfall in June:
4.02"
- Average rainfall in July:
2.24" - Average rainfall in August:
2.72" - Average rainfall in September:
2.32" - Average rainfall in October:
2.28" - Average rainfall in November:
1.06" - Average rainfall in December:
1.5"
The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days
Alta, IA
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
3.7 days - Average rainfall days in March:
10.7 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
18.7 days - Average rainfall days in June:
19 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
5.1 days
The month with the highest number of rainy days is June (19 days).
The month with the least rainy days is February (3.7 days).
Average snowfall
Alta, IA
- Average snowfall in January:
4.65" - Average snowfall in February:
5.79" - Average snowfall in March:
3.07" - Average snowfall in April:
1.77" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Alta, IA
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
7.2 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.3 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:
1.4 days - Average snowfall days in November:
4.2 days - Average snowfall days in December:
11.3 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Alta, IA
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
9h and 3min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Alta, IA
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
8.1 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
13.6 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
17.8 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
16.9 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (8.1 days).
Average UV index
Alta, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover
Alta, IA
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Alta, IA
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Alta, Iowa, USA
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