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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 Decatur City, Iowa, is another subzero cold winter month, with an average temperature ranging between max 30.6°F (-0.8°C) and min 16.9°F (-8.4°C). January stands out as Decatur City's coldest month, with temperatures ranging between an average high of 30.6°F (-0.8°C) and a low of 16.9°F (-8.4°C). Weather in January »
Weather in February
February, the last month of the winter in Decatur City, is a wintry month, with an average temperature ranging between min 19.8°F (-6.8°C) and max 34.3°F (1.3°C). The introduction of February sees an average high-temperature of a cold 34.3°F (1.3°C), hardly deviating from January. Weather in February »
Weather in March
March, the first month of the spring in Decatur City, is a frosty month, with an average temperature varying between 33.4°F (0.8°C) and 48.9°F (9.4°C). Decatur City sees a considerable increase in average high-temperatures during March, surging from an icy 34.3°F (1.3°C) in February to a frosty 48.9°F (9.4°C). Weather in March »
Weather in April
April is a mild spring month in Decatur City, Iowa, with an average temperature fluctuating between 60.4°F (15.8°C) and 43°F (6.1°C). As March gives way to April, the average high-temperature displays an increase, moving from a frosty 48.9°F (9.4°C) to a mild 60.4°F (15.8°C). Weather in April »
Weather in May
May, the last month of the spring in Decatur City, is a pleasant month, with an average temperature ranging between min 53.1°F (11.7°C) and max 69.4°F (20.8°C). The start of May signals an increase in the average high-temperature, moving from a mild 60.4°F (15.8°C) in April to an agreeable 69.4°F (20.8°C). Weather in May »
Weather in June
June, the first month of the summer in Decatur City, is a moderately hot month, with an average temperature varying between 63.1°F (17.3°C) and 79.9°F (26.6°C). June's arrival coincides with a temperature rise, moving from May's agreeable 69.4°F (20.8°C) to a warm 79.9°F (26.6°C). Weather in June »
Weather in July
July, like June, in Decatur City, Iowa, is a moderately hot summer month, with an average temperature ranging between max 83.5°F (28.6°C) and min 66°F (18.9°C). Decatur City notes the warmest temperatures in July, with a high average of 83.5°F (28.6°C) and a low of 66°F (18.9°C). The heat index in July is evaluated at a hot 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Decatur City, Iowa, with an average temperature fluctuating between 63.5°F (17.5°C) and 81.9°F (27.7°C). An average high-temperature of a still warm 81.9°F (27.7°C) marks August, exhibiting a close resemblance to the conditions in July. Weather in August »
Weather in September
September, the first month of the autumn in Decatur City, is still a warm month, with an average temperature varying between 76.1°F (24.5°C) and 56.3°F (13.5°C). With the onset of September, the average high-temperature subtly recedes from August's warm 81.9°F (27.7°C) to a still moderately hot 76.1°F (24.5°C). Weather in September »
Weather in October
October, like September, in Decatur City, Iowa, is another comfortable autumn month, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 61.7°F (16.5°C). The beginning of October marks a clear shift in the average high-temperature, receding from September's warm 76.1°F (24.5°C) to a refreshing 61.7°F (16.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Decatur City, is another chilly month, with an average temperature fluctuating between 48.6°F (9.2°C) and 33.1°F (0.6°C). The arrival of November corresponds with a reduction in the average high-temperature, down from October's comfortable 61.7°F (16.5°C) to a frosty 48.6°F (9.2°C). Weather in November »
Weather in December
December, the first month of the winter in Decatur City, is also a wintry month, with temperature in the range of an average high of 35.6°F (2°C) and an average low of 23.4°F (-4.8°C). December's onset corresponds with a shift in the average high-temperature, moving from a frosty 48.6°F (9.2°C) in November to a wintry 35.6°F (2°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Decatur City?
January is the coldest month in Decatur City, Iowa, with the temperature often reaching an average high of 30.6°F (-0.8°C) and an average low of 16.9°F (-8.4°C).
What is the driest month in Decatur City?
January and December are months with the least rain when the rain falls for 4.8 days and typically aggregates up to 0.67" (17mm) of rain.
How much does it rain in Decatur City?
Throughout the year, in Decatur City, Iowa, there are 132.4 rainfall days, and 20.24" (514mm) of precipitation is accumulated.
When does it snow in Decatur City?
January through May, October through December are months with snowfall in Decatur City.
What is the snowiest month in Decatur City?
January is the month with the most snowfall. Snow falls for 8.6 days and accumulates 2.72" (69mm) of snow.
How much does it snow in Decatur City?
Throughout the year, in Decatur City, Iowa, there are 30.2 snowfall days, and 10.16" (258mm) of snow is accumulated.
What is the month with the least sunshine in Decatur City?
The month with the least sunshine is January, with an average of 4.4h of sunshine.
When is the lowest UV index in Decatur City?
January is the month with the lowest UV index in Decatur City, Iowa, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Decatur City?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Decatur City, Iowa, 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 most humid month in Decatur City?
June is the most humid month, with an average relative humidity of 83%.
What is the wettest month in Decatur City?
June is the month with the most rainfall. Rain falls for 17.3 days and accumulates 3.43" (87mm) of precipitation.
When it does not snow in Decatur City?
In Decatur City, Iowa, snow does not fall in June through September.
When are the longest days in Decatur City?
With an average of 15h and 0min of daylight, June has the longest days of the year.
What are the months with the highest UV index in Decatur City?
The months with the highest UV index in Decatur City are June through August, with an average maximum UV index of 6.
What is the warmest month in Decatur City?
Decatur City's warmest temperatures are experienced in July, with average high temperatures of 83.5°F (28.6°C) and lows of 66°F (18.9°C).
What month has the most sunshine in Decatur City?
With an average of 10.4h of sunshine, July has the most sunshine of the year in Decatur City.
What is the least humid month in Decatur City?
With an average relative humidity of 72%, October is the least humid month in Decatur City, Iowa.
What is the month with the shortest days in Decatur City?
December has the shortest days of the year in Decatur City, with an average of 9h and 18min of daylight.
Average temperature
Decatur City, IA
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure
Decatur City, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"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:
29.89"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:
30.01"Hg - Average pressure in November:
30.09"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 (29.89"Hg).
Average wind speed
Decatur City, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.6mph - Average wind speed in June:
8mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.9mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10.2mph - Average wind speed in December:
9.9mph
The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity
Decatur City, IA
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Decatur City, IA
- Average rainfall in January:
0.67" - Average rainfall in February:
0.71" - Average rainfall in March:
1.5" - Average rainfall in April:
1.81" - Average rainfall in May:
2.8" - Average rainfall in June:
3.43"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.93" - Average rainfall in September:
2.24" - Average rainfall in October:
1.54" - Average rainfall in November:
1.06" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is June (3.43").
The driest months (with the least rainfall) are January and December (0.67").
Average rainfall days
Decatur City, IA
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
5 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
15.1 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
9.9 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
5.7 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is January (4.8 days).
Average snowfall
Decatur City, IA
The month with the highest snowfall is January (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Decatur City, IA
- Average snowfall days in January:
8.6 days - Average snowfall days in February:
8.2 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
1.3 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:
0.5 days - Average snowfall days in November:
1.8 days - Average snowfall days in December:
5.9 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Decatur City, IA
- Average daylight in January:
9h and 4min - 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 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 0min - 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Decatur City, IA
- Average sunshine days in January:
19.1 days - Average sunshine days in February:
15.9 days - Average sunshine days in March:
15 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
8.9 days
- Average sunshine days in July:
11.6 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
16 days - Average sunshine days in October:
18.6 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
20.3 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (8.9 days).
Average UV index
Decatur City, IA
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Decatur City, IA
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Decatur City, IA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Decatur City, Iowa, USA
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