Climate and monthly weather forecastArnold, IA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Arnold, Iowa, is a freezing cold winter month, with temperature in the range of an average high of 24.3°F (-4.3°C) and an average low of 11.7°F (-11.3°C). Arnold's coldest month, January, generally records average temperatures ranging from a high of 24.3°F (-4.3°C) to a low of 11.7°F (-11.3°C). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Arnold, Iowa, with an average temperature fluctuating between 28.2°F (-2.1°C) and 14.9°F (-9.5°C). As February takes hold, the average high-temperature is a still subzero cold 28.2°F (-2.1°C), nearly mirroring that of the previous month. Weather in February »Weather in March
March, the first month of the spring in Arnold, is a frosty month, with an average temperature fluctuating between 29.5°F (-1.4°C) and 44.1°F (6.7°C). In March, the meteorological conditions markedly change with the average high-temperature ascending from a subzero cold 28.2°F (-2.1°C) in February to a chilly 44.1°F (6.7°C). Weather in March »Weather in April
April in Arnold, Iowa, is a mild spring month, with an average temperature ranging between min 41°F (5°C) and max 56.8°F (13.8°C). Arnold's transition into April sees a rise in the average high-temperature, advancing from a chilly 44.1°F (6.7°C) in March to a moderate 56.8°F (13.8°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Arnold, Iowa, with temperature in the range of an average high of 69.1°F (20.6°C) and an average low of 52.5°F (11.4°C). Arnold's May weather shows an increase in high-temperatures, moving from April's refreshing 56.8°F (13.8°C) to a pleasant 69.1°F (20.6°C). Weather in May »Weather in June
June, the first month of the summer in Arnold, is a warm month, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 61.9°F (16.6°C). With the arrival of June, the average high-temperature transitions from an agreeable 69.1°F (20.6°C) in May to a moderately hot 78.1°F (25.6°C). Weather in June »Weather in July
July, like June, in Arnold, Iowa, is another warm summer month, with an average temperature varying between 80.8°F (27.1°C) and 63.7°F (17.6°C). With average high temperatures of 80.8°F (27.1°C) and lows of 63.7°F (17.6°C), July is the warmest month. July's average heat index is calculated to be a tropical 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Arnold, is also a moderately hot month, with an average temperature fluctuating between 79°F (26.1°C) and 61°F (16.1°C). Arnold marks the arrival of August with an average high-temperature of a still warm 79°F (26.1°C), hardly different from July's 80.8°F (27.1°C). Weather in August »Weather in September
September, the first month of the autumn in Arnold, is still a warm month, with an average temperature varying between 74.1°F (23.4°C) and 54.5°F (12.5°C). The shift into September uncovers an average high-temperature of a still moderately hot 74.1°F (23.4°C), subtly different from the previous month. Weather in September »Weather in October
October, like September, is a moderate autumn month in Arnold, Iowa, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 58.1°F (14.5°C). Arnold's October weather is characterized by a distinct downswing in high-temperatures, falling from September's warm 74.1°F (23.4°C) to a mild 58.1°F (14.5°C). Weather in October »Weather in November
November, the last month of the autumn in Arnold, is also a frosty month, with an average temperature fluctuating between 31.5°F (-0.3°C) and 44.1°F (6.7°C). Onset of November witnesses a reduction in the average high-temperature, falling from a mild 58.1°F (14.5°C) in October to a chilly 44.1°F (6.7°C). Weather in November »Weather in December
December, the first month of the winter in Arnold, is still a freezing cold month, with an average temperature varying between 30°F (-1.1°C) and 19°F (-7.2°C). With the beginning of December, the average high-temperature shows a decrease, transitioning from a chilly 44.1°F (6.7°C) in November to a subzero cold 30°F (-1.1°C). Weather in December »Updated: Aug 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
January is the month when Arnold sees the average lowest temperatures, with a high of 24.3°F (-4.3°C) and a low of 11.7°F (-11.3°C).
January is the most humid month, with an average relative humidity of 86%.
January is the month with the least rainfall. Rain falls for 4.5 days and accumulates 0.94" (24mm) of precipitation.
Throughout the year, there are 130.6 rainfall days, and 25" (635mm) of precipitation is accumulated.
Months with snowfall are January through May, October through December.
Throughout the year, there are 41.2 snowfall days, and 18.11" (460mm) of snow is accumulated.
With an average of 4h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 9 days and typically aggregates up to 5" (127mm) of snow.
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.
The month with the most rainfall is June, when the rain falls for 17.3 days and typically aggregates up to 3.7" (94mm) of precipitation.
June through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 18min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index in Arnold, Iowa.
The highest temperatures are recorded in July, with averages reaching a high of 80.8°F (27.1°C) and a low of 63.7°F (17.6°C).
The month with the most sunshine is July, with an average of 10.3h of sunshine.
With an average relative humidity of 68%, October is the least humid month.
With an average of 9h and 6min of daylight, December has the shortest days of the year.
Average temperature
Arnold, IA
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (24.3°F).
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure
Arnold, IA
- Average pressure in January:
30.15"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 (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Arnold, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.4mph - Average wind speed in June:
8.5mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.5mph - Average wind speed in October:
9.9mph - Average wind speed in November:
10.5mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity
Arnold, IA
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (68%).
Average rainfall
Arnold, IA
- Average rainfall in January:
0.94" - Average rainfall in February:
1.18" - Average rainfall in March:
1.5" - Average rainfall in April:
2.83" - Average rainfall in May:
3.43" - Average rainfall in June:
3.7"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days
Arnold, IA
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
3.7 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
14.6 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
5.1 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall
Arnold, IA
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Arnold, IA
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
9 days - Average snowfall days in March:
5.4 days - Average snowfall days in April:
2 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:
0.5 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
9.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Arnold, IA
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
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 0min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 42min - Average sunshine in September:
9h and 12min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Arnold, IA
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
16.6 days - Average sunshine days in March:
16 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
15.7 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
17.8 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
17.8 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Arnold, 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, November and December (UV index 2).
Average cloud cover
Arnold, IA
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility
Arnold, IA
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
