Climate and monthly weather forecastCharter Oak, IA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Charter Oak, Iowa, is another subzero cold winter month, with an average temperature ranging between max 27°F (-2.8°C) and min 14°F (-10°C). January, characterized by an average high temperature of 27°F (-2.8°C) and a low temperature of 14°F (-10°C), is generally the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Charter Oak, Iowa, with an average temperature varying between 17.6°F (-8°C) and 30.7°F (-0.7°C). Charter Oak, Iowa, indicates an average high-temperature of a still subzero cold 30.7°F (-0.7°C) in February, showing minor variation from January's 27°F (-2.8°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Charter Oak, Iowa, with temperature in the range of an average high of 46.4°F (8°C) and an average low of 31.1°F (-0.5°C). With the onset of March, Charter Oak's weather experiences a distinct temperature rise, moving from a freezing cold 30.7°F (-0.7°C) in February to a frosty 46.4°F (8°C). Weather in March »Weather in April
April in Charter Oak, Iowa, is a mild spring month, with an average temperature ranging between min 41.7°F (5.4°C) and max 58.5°F (14.7°C). In April, the average high-temperature increases from a chilly 46.4°F (8°C) in March to a refreshing 58.5°F (14.7°C). Weather in April »Weather in May
May, the last month of the spring in Charter Oak, is a pleasant month, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 69.4°F (20.8°C). May sees a rise in the average high-temperature, climbing from a moderate 58.5°F (14.7°C) in April to an agreeable 69.4°F (20.8°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Charter Oak, Iowa, with an average temperature varying between 79.3°F (26.3°C) and 62.8°F (17.1°C). The onset of June brings a temperature shift, with the average high-temperature moving from an agreeable 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 Charter Oak, Iowa, is another warm summer month, with an average temperature varying between 81.7°F (27.6°C) and 64.8°F (18.2°C). July, with its high-temperature average of 81.7°F (27.6°C) and a low-temperature average of 64.8°F (18.2°C), is the warmest month. July's mean heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Charter Oak, is another warm month, with an average temperature ranging between min 61.7°F (16.5°C) and max 79.7°F (26.5°C). The onset of August brings an average high-temperature of a still warm 79.7°F (26.5°C), nearly matching the July temperature. Weather in August »Weather in September
September, the first month of the autumn in Charter Oak, is still a warm month, with an average temperature ranging between min 55.6°F (13.1°C) and max 74.5°F (23.6°C). As Charter Oak steps into September, the average high-temperature holds at a still moderately hot 74.5°F (23.6°C), hinting at a minor fluctuation from the prior month. Weather in September »Weather in October
October, the same as September, in Charter Oak, Iowa, is another refreshing autumn month, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 59.2°F (15.1°C). The onset of October marks a clear decrease in the average high-temperature, dropping from a moderately hot 74.5°F (23.6°C) in September to a mild 59.2°F (15.1°C). Weather in October »Weather in November
November, the last month of the autumn in Charter Oak, is also a frosty month, with an average temperature fluctuating between 32°F (0°C) and 45.9°F (7.7°C). November's arrival comes with a decrease in the average high-temperature, moving from a moderate 59.2°F (15.1°C) in October to a frosty 45.9°F (7.7°C). Weather in November »Weather in December
The first month of the winter, December, is also a subzero cold month in Charter Oak, Iowa, with an average temperature fluctuating between 20.3°F (-6.5°C) and 31.8°F (-0.1°C). The onset of December comes with a shift in the average high-temperature, falling from a chilly 45.9°F (7.7°C) in November to a subzero cold 31.8°F (-0.1°C). Weather in December »Updated: Feb 12, 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 coldest month, with an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 14°F (-10°C).
The most humid month is January, with an average relative humidity of 83%.
The month with the least rainfall is January, when the rain falls for 3.6 days and typically collects 0.71" (18mm) of precipitation.
In Charter Oak, Iowa, during the entire year, the rain falls for 123 days and collects up to 24.72" (628mm) of precipitation.
January through May, October through December are months with snowfall in Charter Oak.
In Charter Oak, during the entire year, snow falls for 36.8 days and aggregates up to 14.53" (369mm) of snow.
January has the least sunshine of the year in Charter Oak, with an average of 4.2h of sunshine.
The month with the most snowfall is February, when snow falls for 8.3 days and typically aggregates up to 3.43" (87mm) of snow.
With an average maximum UV index of 1, February is the month with the lowest UV index in Charter Oak, Iowa.
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 months with the lowest humidity are April and October, with an average relative humidity of 68%.
May is the month with the most rainfall. Rain falls for 16 days and accumulates 3.82" (97mm) of precipitation.
June through September are months without snowfall.
The month with the longest days in Charter Oak is June, with an average of 15h and 12min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index in Charter Oak, Iowa.
The highest temperatures in Charter Oak are recorded in July, with averages reaching a high of 81.7°F (27.6°C) and a low of 64.8°F (18.2°C).
With an average of 10.3h of sunshine, July has the most sunshine of the year in Charter Oak, Iowa.
With an average of 9h and 12min of daylight, December has the shortest days of the year in Charter Oak, Iowa.
Average temperature
Charter Oak, IA
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (27°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure
Charter Oak, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.92"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:
30.13"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
Charter Oak, IA
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.9mph - Average wind speed in April:
11.1mph - Average wind speed in May:
9.4mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
7.4mph - Average wind speed in August:
7.6mph - Average wind speed in September:
8.7mph - Average wind speed in October:
9.9mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity
Charter Oak, IA
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall
Charter Oak, IA
- Average rainfall in January:
0.71" - Average rainfall in February:
0.91" - Average rainfall in March:
1.61" - Average rainfall in April:
2.36" - Average rainfall in May:
3.82" - Average rainfall in June:
3.5"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days
Charter Oak, IA
- Average rainfall days in January:
3.6 days - Average rainfall days in February:
3 days - Average rainfall days in March:
9.4 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
16 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
14 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
4.5 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall
Charter Oak, IA
- Average snowfall in January:
3.35" - Average snowfall in February:
3.43" - Average snowfall in March:
2.68" - Average snowfall in April:
0.94" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Charter Oak, IA
- Average snowfall days in January:
10.2 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
5.1 days - Average snowfall days in April:
1.4 days - Average snowfall days in May:
0.1 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:
0.8 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Charter Oak, 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 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
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 12min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 30min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 42min
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 12min).
Average sunshine days
Charter Oak, IA
- Average sunshine days in January:
18 days - Average sunshine days in February:
16.9 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
14.8 days - Average sunshine days in August:
15 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
20.4 days - Average sunshine days in December:
19.7 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (11.9 days).
Average UV index
Charter Oak, IA
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover
Charter Oak, 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
Charter Oak, 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).
