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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 Greenfield, Iowa, is another subzero cold winter month, with an average temperature ranging between max 28.4°F (-2°C) and min 14.9°F (-9.5°C). January, characterized by an average high temperature of 28.4°F (-2°C) and a low temperature of 14.9°F (-9.5°C), is generally the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Greenfield, is a cold month, with temperature in the range of an average high of 32°F (0°C) and an average low of 18.3°F (-7.6°C). Greenfield's shift into February is marked by a subtle change to a wintry 32°F (0°C) from January's 28.4°F (-2°C) in temperature. Weather in February »
Weather in March
March, the first month of the spring in Greenfield, is a frosty month, with an average temperature ranging between min 32.4°F (0.2°C) and max 47.3°F (8.5°C). With the transition into March, Greenfield experiences a significant increase in average high-temperatures, moving up from an icy 32°F (0°C) in February to a chilly 47.3°F (8.5°C). Weather in March »
Weather in April
April is a mild spring month in Greenfield, Iowa, with temperature in the range of an average high of 59.4°F (15.2°C) and an average low of 42.1°F (5.6°C). As April arrives, a rise in the average high-temperature is observed, moving from a frosty 47.3°F (8.5°C) in March to a mild 59.4°F (15.2°C). Weather in April »
Weather in May
May, the last month of the spring in Greenfield, is an agreeable month, with an average temperature varying between 52.5°F (11.4°C) and 69.1°F (20.6°C). The arrival of May sees a shift in the average high-temperature, moving from a mild 59.4°F (15.2°C) in April to an agreeable 69.1°F (20.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Greenfield, Iowa, with an average temperature varying between 63°F (17.2°C) and 79.2°F (26.2°C). June shows a rise in the average high-temperature, moving from May's agreeable 69.1°F (20.6°C) to a warm 79.2°F (26.2°C). Weather in June »
Weather in July
July, like June, in Greenfield, Iowa, is another warm summer month, with an average temperature ranging between min 65.1°F (18.4°C) and max 82.4°F (28°C). Greenfield witnesses the warmest weather in July, with temperatures averaging a high of 82.4°F (28°C) and a low of 65.1°F (18.4°C). The heat index value during July is estimated at a tropical 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Greenfield, is another warm month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 80.8°F (27.1°C). The average high-temperature during August registers at a still warm 80.8°F (27.1°C), closely corresponding to the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Greenfield, Iowa, with an average temperature ranging between min 55.9°F (13.3°C) and max 74.8°F (23.8°C). In Greenfield, the average high-temperature in September gently drops from a moderately hot 80.8°F (27.1°C) in August to a still warm 74.8°F (23.8°C). Weather in September »
Weather in October
October, the same as September, in Greenfield, Iowa, is a moderate autumn month, with an average temperature ranging between min 43.7°F (6.5°C) and max 60.3°F (15.7°C). The shift from September to October is characterized by a clear decrease in the average high-temperature, reducing from a moderately hot 74.8°F (23.8°C) to a mild 60.3°F (15.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Greenfield, Iowa, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 47.1°F (8.4°C). In Greenfield, the average high-temperature in November drops from a mild 60.3°F (15.7°C) in October to a chilly 47.1°F (8.4°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Greenfield, Iowa, with temperature in the range of an average low of 22.1°F (-5.5°C) and an average high of 33.8°F (1°C). The shift to December brings a decrease in the average high-temperature, falling from a chilly 47.1°F (8.4°C) in November to an icy 33.8°F (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
What time of the year is the coldest in Greenfield?
January stands out as Greenfield's coldest month, with temperatures ranging between an average high of 28.4°F (-2°C) and a low of 14.9°F (-9.5°C).
What is the most humid month in Greenfield?
January, February and June, with an average relative humidity of 82%, are most humid months in Greenfield, Iowa.
What is the driest month in Greenfield?
The month with the least rainfall is January, when the rain falls for 4 days and typically collects 0.87" (22mm) of precipitation.
How many days does it rain in Greenfield?
In Greenfield, during the entire year, the rain falls for 138.2 days and collects up to 28.23" (717mm) of precipitation.
When does it snow in Greenfield?
January through May, October through December are months with snowfall.
How many days does it snow in Greenfield?
Throughout the year, there are 35.5 snowfall days, and 15.71" (399mm) of snow is accumulated.
What is the month with the least sunshine in Greenfield?
The month with the least sunshine in Greenfield is January, with an average of 4.4h of sunshine.
When is the lowest UV index in Greenfield?
January is the month with the lowest UV index in Greenfield, Iowa, with an average maximum UV index of 1.
What is the snowiest month in Greenfield?
February is the month with the most snowfall in Greenfield. Snow falls for 7.9 days and accumulates 4.41" (112mm) of snow.
When is Daylight Saving Time (DST) in Greenfield?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Greenfield, 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 wettest month in Greenfield?
June is the month with the most rainfall in Greenfield, Iowa. Rain falls for 18.5 days and accumulates 4.49" (114mm) of precipitation.
When it does not snow in Greenfield?
June through September are months without snowfall in Greenfield, Iowa.
When are the longest days in Greenfield?
June has the longest days of the year, with an average of 15h and 6min of daylight.
When is the highest UV index in Greenfield?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What time of the year is the hottest in Greenfield?
July, having an average high-temperature of 82.4°F (28°C) and an average low-temperature of 65.1°F (18.4°C), is the warmest month in Greenfield.
What month has the most sunshine in Greenfield?
The month with the most sunshine is July, with an average of 10.2h of sunshine.
What is the least humid month in Greenfield?
With an average relative humidity of 70%, October is the least humid month.
What is the month with the shortest days in Greenfield?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Greenfield, IA
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.4°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure
Greenfield, 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:
29.88"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:
30.01"Hg - Average pressure in November:
30.09"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 (29.88"Hg).
Average wind speed
Greenfield, 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:
10.5mph - Average wind speed in May:
8.9mph - 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:
10.5mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity
Greenfield, IA
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Greenfield, IA
- Average rainfall in January:
0.87" - Average rainfall in February:
1.06" - Average rainfall in March:
1.73" - Average rainfall in April:
2.72" - Average rainfall in May:
4.21" - Average rainfall in June:
4.49"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.99" - Average rainfall in September:
2.68" - Average rainfall in October:
2.24" - Average rainfall in November:
1.26" - Average rainfall in December:
1.3"
The wettest month (with the highest rainfall) is June (4.49").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days
Greenfield, IA
- Average rainfall days in January:
4 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
11.1 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
18 days - Average rainfall days in June:
18.5 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is June (18.5 days).
The month with the least rainy days is January (4 days).
Average snowfall
Greenfield, IA
- Average snowfall in January:
3.78" - Average snowfall in February:
4.41" - Average snowfall in March:
1.85" - Average snowfall in April:
0.94" - Average snowfall in May:
0.63" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Greenfield, IA
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
7.9 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.5 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:
1 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Greenfield, 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 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 2min
The month with the longest days is June (Average daylight: 15h and 6min).
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 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Greenfield, IA
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
9.6 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
19.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (9.6 days).
Average UV index
Greenfield, 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
Greenfield, IA
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Greenfield, 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).
Greenfield, Iowa, USA
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