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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
Climate and monthly weather forecast
Weather in January
January, the same as December, in Cooper, Iowa, is a freezing cold winter month, with an average temperature varying between 26.8°F (-2.9°C) and 13.5°F (-10.3°C). January is the month when Cooper sees the lowest average temperatures, with a high of 26.8°F (-2.9°C) and a low of 13.5°F (-10.3°C). Weather in January »
Weather in February
February, the last month of the winter in Cooper, is also a subzero cold month, with an average temperature fluctuating between 30.6°F (-0.8°C) and 16.9°F (-8.4°C). The commencement of February notes an average high-temperature of a still freezing cold 30.6°F (-0.8°C), exhibiting little difference from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Cooper, Iowa, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 46°F (7.8°C). March's onset witnesses a marked shift in the average high-temperature, moving from a subzero cold 30.6°F (-0.8°C) in February to a chilly 46°F (7.8°C). Weather in March »
Weather in April
April is a mild spring month in Cooper, Iowa, with temperature in the range of an average low of 42.1°F (5.6°C) and an average high of 58.5°F (14.7°C). The shift from March to April is marked by an increase in the average high-temperature, moving from a chilly 46°F (7.8°C) to a refreshing 58.5°F (14.7°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Cooper, Iowa, with an average temperature fluctuating between 69.4°F (20.8°C) and 53.1°F (11.7°C). Entering May, Cooper sees a temperature rise, with the average high-temperature advancing from April's mild 58.5°F (14.7°C) to a pleasant 69.4°F (20.8°C). Weather in May »
Weather in June
June, the first month of the summer in Cooper, is a warm month, with an average temperature varying between 62.8°F (17.1°C) and 79.3°F (26.3°C). June's onset is marked by a temperature increase, moving from a pleasant 69.4°F (20.8°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, like June, in Cooper, Iowa, is another warm summer month, with an average temperature varying between 82°F (27.8°C) and 64.6°F (18.1°C). In Cooper, the peak temperatures are generally noted in July, averaging a high of 82°F (27.8°C) and a low of 64.6°F (18.1°C). The heat index value for July is calculated to be a tropical 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Cooper, is also a moderately hot month, with an average temperature varying between 61.5°F (16.4°C) and 80.1°F (26.7°C). The weather during August records an average high-temperature of a still moderately hot 80.1°F (26.7°C), closely mirroring the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Cooper, is still a warm month, with an average temperature ranging between max 74.8°F (23.8°C) and min 55.8°F (13.2°C). Cooper in September witnesses an average high-temperature of a still warm 74.8°F (23.8°C), indicating a slight variation from August's 80.1°F (26.7°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Cooper, Iowa, with temperature in the range of an average low of 43.9°F (6.6°C) and an average high of 59.9°F (15.5°C). The onset of October brings a clear temperature shift, with the average high-temperature decreasing from a warm 74.8°F (23.8°C) in September to a moderate 59.9°F (15.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Cooper, Iowa, with an average temperature varying between 32.5°F (0.3°C) and 45.9°F (7.7°C). The shift to November brings a decrease in the average high-temperature, falling from a mild 59.9°F (15.5°C) in October to a chilly 45.9°F (7.7°C). Weather in November »
Weather in December
December, the first month of the winter in Cooper, is also an icy month, with temperature in the range of an average high of 32°F (0°C) and an average low of 21°F (-6.1°C). A shift in Cooper's weather is observed as November turns into December, with the average high temperature reducing from a frosty 45.9°F (7.7°C) to a wintry 32°F (0°C). Weather in December »
Updated: Jul 23, 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 is the coldest time of year?
Cooper experiences its average lowest temperatures in January, reaching a peak of 26.8°F (-2.9°C) and a minimum of 13.5°F (-10.3°C).
What is the most humid month?
With an average relative humidity of 84%, January is the most humid month.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.87" (22mm) of precipitation.
How much does it rain?
In Cooper, during the entire year, the rain falls for 125.7 days and collects up to 26.5" (673mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 9.8 days and accumulates 4.29" (109mm) of snow.
How much does it snow?
Throughout the year, there are 38.1 snowfall days, and 15.31" (389mm) of snow is accumulated.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.2h of sunshine.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.
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 wettest month?
The month with the most rainfall is May, when the rain falls for 16.2 days and typically aggregates up to 4.06" (103mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What are the months with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What part of the year is the hottest in Cooper?
During the warmest month in Cooper, July, temperatures average a high of 82°F (27.8°C) and a low of 64.6°F (18.1°C).
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.2h of sunshine.
What is the least humid month in Cooper?
The least humid month is October, with an average relative humidity of 69%.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Cooper, IA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Cooper, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"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:
29.88"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.01"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 (29.88"Hg).
Average wind speed
Cooper, IA
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.3mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.1mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity
Cooper, IA
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Cooper, IA
- Average rainfall in January:
0.87" - Average rainfall in February:
1.02" - Average rainfall in March:
1.54" - Average rainfall in April:
2.76" - Average rainfall in May:
4.06" - Average rainfall in June:
3.94"
- Average rainfall in July:
2.28" - Average rainfall in August:
2.44" - Average rainfall in September:
2.91" - Average rainfall in October:
2.2" - Average rainfall in November:
1.14" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days
Cooper, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.4 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
16.2 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
13 days - Average rainfall days in September:
11.2 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
4.8 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall
Cooper, IA
- Average snowfall in January:
4.29" - Average snowfall in February:
3.66" - Average snowfall in March:
1.89" - Average snowfall in April:
1.26" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Cooper, IA
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
1.7 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:
0.6 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
8.3 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Cooper, 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 1min
- 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 1min - 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 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Cooper, IA
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
16 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.2 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Cooper, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Cooper, IA
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility
Cooper, IA
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).