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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, the same as December, in Garnavillo, Iowa, is another subzero cold winter month, with temperature in the range of an average high of 23.5°F (-4.7°C) and an average low of 10.9°F (-11.7°C). January, marked by an average high-temperature of 23.5°F (-4.7°C) and a low-temperature of 10.9°F (-11.7°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Garnavillo, is another freezing cold month, with temperature in the range of an average high of 27.1°F (-2.7°C) and an average low of 13.8°F (-10.1°C). A minimal variation is noted in Garnavillo's average high-temperature at the onset of February, reaching a still freezing cold 27.1°F (-2.7°C) from January's 23.5°F (-4.7°C). Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Garnavillo, Iowa, with an average temperature ranging between min 27.9°F (-2.3°C) and max 42.3°F (5.7°C). March is marked by a significant increase, with the average high-temperature advancing from a subzero cold 27.1°F (-2.7°C) in February to a cold 42.3°F (5.7°C). Weather in March »
Weather in April
April in Garnavillo, Iowa, is a cool spring month, with an average temperature varying between 38.1°F (3.4°C) and 54.5°F (12.5°C). The commencement of April sees a shift in the average high-temperature, moving from an icy 42.3°F (5.7°C) in March to a cool 54.5°F (12.5°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Garnavillo, Iowa, with an average temperature varying between 66.7°F (19.3°C) and 49.3°F (9.6°C). May indicates a change in the average high-temperature, moving up from a cool 54.5°F (12.5°C) in April to a refreshing 66.7°F (19.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Garnavillo, Iowa, with an average temperature varying between 59.2°F (15.1°C) and 75.6°F (24.2°C). June brings a slight increase in the average high-temperature, progressing from a refreshing 66.7°F (19.3°C) in May to a moderately hot 75.6°F (24.2°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Garnavillo, Iowa, with an average temperature varying between 79.3°F (26.3°C) and 62.4°F (16.9°C). Temperature records mark July as the warmest month, with highs averaging 79.3°F (26.3°C) and lows at 62.4°F (16.9°C). Weather in July »
Weather in August
August, the last month of the summer in Garnavillo, is another warm month, with an average temperature fluctuating between 77.7°F (25.4°C) and 59.9°F (15.5°C). As August unfolds, the average high-temperature reaches a still moderately hot 77.7°F (25.4°C), hinting at a slight fluctuation from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Garnavillo, Iowa, with an average temperature varying between 52.7°F (11.5°C) and 71.8°F (22.1°C). In September, the average high-temperature marginally decreases from a warm 77.7°F (25.4°C) in August to an agreeable 71.8°F (22.1°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Garnavillo, Iowa, with an average temperature varying between 41.7°F (5.4°C) and 57.7°F (14.3°C). Observing a mild shift, the average high-temperature during October reduces from September's agreeable 71.8°F (22.1°C) to a refreshing 57.7°F (14.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Garnavillo, is also a frosty month, with temperature in the range of an average low of 29.8°F (-1.2°C) and an average high of 43.2°F (6.2°C). November signals a clear decrease in the average high-temperature, dropping from October's moderate 57.7°F (14.3°C) to a frosty 43.2°F (6.2°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Garnavillo, Iowa, with an average temperature fluctuating between 30°F (-1.1°C) and 19.9°F (-6.7°C). Garnavillo's progression into December involves a drop in the average high-temperature, receding from a chilly 43.2°F (6.2°C) in November to a subzero cold 30°F (-1.1°C). Weather in December »
Updated: Jun 16, 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?
Garnavillo experiences its average lowest temperatures in January, reaching a peak of 23.5°F (-4.7°C) and a minimum of 10.9°F (-11.7°C).
What are the most humid months?
January and February, with an average relative humidity of 88%, are most humid months.
What is the driest month?
January is the month with the least rainfall. Rain falls for 4.2 days and accumulates 1.1" (28mm) of precipitation.
How many days does it rain?
In Garnavillo, during the entire year, the rain falls for 138 days and collects up to 29.21" (742mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 11.4 days and typically aggregates up to 5.04" (128mm) of snow.
How much does it snow?
In Garnavillo, during the entire year, snow falls for 48.5 days and aggregates up to 19.76" (502mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.6h of sunshine.
What are the months with the lowest UV index?
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Garnavillo?
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 are the months with the highest UV index?
May through August, with an average maximum UV index of 5, are months with the highest UV index.
What is the wettest month?
The month with the most rainfall in Garnavillo is June, when the rain falls for 18.4 days and typically aggregates up to 4.25" (108mm) of precipitation.
When it does not snow?
In Garnavillo, snow does not fall in June through September.
When are the longest days in Garnavillo?
With an average of 15h and 18min of daylight, June has the longest days of the year.
What is the hottest time of year?
July, recognised by an average high temperature of 79.3°F (26.3°C) and a low of 62.4°F (16.9°C), is Garnavillo's warmest month.
What month has the most sunshine?
August has the most sunshine of the year, with an average of 9.9h of sunshine.
What is the least humid month?
The least humid month is October, with an average relative humidity of 75%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Garnavillo, IA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (23.5°F).
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure
Garnavillo, IA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Garnavillo, IA
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.3mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity
Garnavillo, IA
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Garnavillo, IA
- Average rainfall in January:
1.1" - Average rainfall in February:
1.22" - Average rainfall in March:
1.81" - Average rainfall in April:
3.23" - Average rainfall in May:
4.13" - Average rainfall in June:
4.25"
The wettest month (with the highest rainfall) is June (4.25").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days
Garnavillo, IA
- Average rainfall days in January:
4.2 days - Average rainfall days in February:
3.6 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
15.6 days - Average rainfall days in May:
19.3 days - Average rainfall days in June:
18.4 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
13.4 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
5.2 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (3.6 days).
Average snowfall
Garnavillo, IA
The month with the highest snowfall is January (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Garnavillo, IA
- Average snowfall days in January:
11.4 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
7.8 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.2 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:
1.2 days - Average snowfall days in November:
4.3 days - Average snowfall days in December:
10.5 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Garnavillo, 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:
15h and 0min - 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 4min - 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:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Garnavillo, IA
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
8.9 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
15 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
16.9 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (8.9 days).
Average UV index
Garnavillo, IA
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Garnavillo, IA
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Garnavillo, IA
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Garnavillo, Iowa, USA
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