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Contents
- The climate of Greenfield
- The best time to visit Greenfield
- The worst time to visit Greenfield
- Spring weather in Greenfield
- Summer weather in Greenfield
- Autumn weather in Greenfield
- Winter weather in Greenfield
- 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
The climate of Greenfield
Situated in the United States, Greenfield, Wisconsin experiences a Dfb climate according to the Köppen climate classification - a Humid continental, no dry season, warm-summer climate. The city of Greenfield endures four distinct seasons with substantial variances in terms of weather elements throughout the year.
Temperature levels swing notably, from as low as 16.2°F (-8.8°C) in the coldest month to a high of 77.9°F (25.5°C) in the peak summer month. Generally, average humidity is relatively high, with values typically between 75% and 85%, indicating the moist nature of Greenfield's climate. Rainfall numbers oscillate moderately from 0.83" (21mm) to 2.56" (65mm) monthly, with more rainy days noted during the summer months. Months from December through February bring significant volumes of snowfall reaching up to 3.03" (77mm) in December with associated snowfall days peaking at 11.6 in January.
The daylight duration fluctuates from 9.1 to 15.3 hours daily and sunshine duration from 3.5 to 10.3 hours. The annual UV index varies from 1 to 6 throughout the year. Cloud cover percentage fluctuates between 64% and 29%, thus indicating varying degrees of overcast conditions. The atmospheric pressure is fairly consistent, measuring around 29.92 to 30.09" (764mm) while wind speeds range from 7.1 to 11.4mph (18.3km/h).
Temperature levels swing notably, from as low as 16.2°F (-8.8°C) in the coldest month to a high of 77.9°F (25.5°C) in the peak summer month. Generally, average humidity is relatively high, with values typically between 75% and 85%, indicating the moist nature of Greenfield's climate. Rainfall numbers oscillate moderately from 0.83" (21mm) to 2.56" (65mm) monthly, with more rainy days noted during the summer months. Months from December through February bring significant volumes of snowfall reaching up to 3.03" (77mm) in December with associated snowfall days peaking at 11.6 in January.
The daylight duration fluctuates from 9.1 to 15.3 hours daily and sunshine duration from 3.5 to 10.3 hours. The annual UV index varies from 1 to 6 throughout the year. Cloud cover percentage fluctuates between 64% and 29%, thus indicating varying degrees of overcast conditions. The atmospheric pressure is fairly consistent, measuring around 29.92 to 30.09" (764mm) while wind speeds range from 7.1 to 11.4mph (18.3km/h).
The best time to visit Greenfield
The most inviting times to visit Greenfield are between May and September. These months offer the warmest temperatures, averaging between 61.9°F (16.6°C) to 77.9°F (25.5°C), ideal for outdoor activities and site seeing. While rainfall in these months ranges from 2.17" (55mm) to 2.56" (65mm), the daylight hours of up to 15.3 hours and over 8 hours of sunshine offer inviting conditions for visitors.
The worst time to visit Greenfield
Greenfield tends to be least inviting during the cold months of December to February, registering low temperatures from 16.2°F (-8.8°C) to 40.3°F (4.6°C), which might not appeal to most visitors. Furthermore, the city experiences snowfall during this period, reaching up to 3.03" (77mm) in December and January and snowfall days spreading between 6.2 to 11.6 in these months, posing limitations on outdoor activities.
Spring weather in Greenfield
March to May constitutes the spring season in Greenfield. It witnesses a steady rise in temperature from 40.3°F (4.6°C) to 61.9°F (16.6°C). While March sees the last of the snowfall for the year, the rainfall increases from 1.06" (27mm) to 2.2" (56mm). The period also sees daylight increase from 12 hours to 14.7 hours, accompanied by rising sunshine hours.
Summer weather in Greenfield
Greenfield's summer, from June to August, invites higher temperatures from 71.2°F (21.8°C) to 77.9°F (25.5°C). Relative humidity hovers around 78% to 80%, and rainfall ranges from 2.17" (55mm) to 2.56" (65mm). With longer sunshine hours peaking at 10.3 hours in July, summer offers the most daylight hours, reaching up to 15.3 hours per day.
Autumn weather in Greenfield
Autumn in Greenfield, occurring from September through November, sees a decline in temperatures from 70.5°F (21.4°C) to 43.7°F (6.5°C). Rainfall reduces to a minimum of 1.06" (27mm) in November, and sunshine hours decrease to 7.5 months.
Winter weather in Greenfield
Decembers through February in Greenfield are noted for low temperatures plunging to 16.2°F (-8.8°C) in January. Combined with snowfall reaching 3.03" (77mm) in December, these months mark the winter period. Despite clear skies, with cloud cover dropping to 48% in January, the winter period sees significantly less sunshine and daylight hours, reducing visibility. Winter winds are also noticeably stronger, with maximum speeds reaching 11.5mph (18.5km/h).
Weather in January
Cold climate greets Greenfield residents at the outset of the year. January is the coldest and snowiest month, with an average low temperature hitting 16.2°F (-8.8°C) and a snowfall of 3.03" (77mm). The city's skyline is often overcast during this period, giving residents less sunlight to enjoy. Weather in January »
Weather in February
February carries forward the chilly trend from January, albeit with slightly warmer temperatures. Greenfield experiences its second-highest snowfall in February, but the amount decreases from the January peak to 2.24" (57mm). Residents can expect a slight rise in daylight hours, easing the wintery darkness a bit. Weather in February »
Weather in March
March brings the heralds of spring to Greenfield, as winter gradually cedes its icy grip. It is a transitional period regarding weather, where the low temperature slowly climbs to 29.7°F (-1.3°C), and the snowfall lessens to 0.83" (21mm). Weather in March »
Weather in April
April sees a noticeable uplift in Greenfield's weather, as spring reveals its full bloom. Temperatures continue on an upward trajectory, and dramatically, the environment transitions from being snowy to being rainy. Vibrant greens start covering the landscape as the city receives a peak rainfall of 2.13" (54mm). Weather in April »
Weather in May
May brings warmer days and longer daylight hours to Greenfield, indicating the arrival of summer. The city becomes livelier as the average high temperature approaches 61.9°F (16.6°C) and the days grow longer. Rainfall still features prominently in the weather pattern, serving as sustenance for the lush greenery. Weather in May »
Weather in June
June rings in the summer season in Greenfield, with temperatures soaring and the days extending even further. Along with the rising temperature, humidity levels increase to 80%, indicating typical Midwestern summer conditions. Rainfall continues its steady presence without overpowering the warm days. Weather in June »
Weather in July
July is the culmination of the summer season in Greenfield, offering the warmest and sunniest days of the entire year. The temperature peaks at an average high of 77.9°F (25.5°C), and the city enjoys the longest daylight hours. Despite the continuous rainfall, July remains a hot and humid month, ideal for a swim or picnic. Weather in July »
Weather in August
August in Greenfield offers a balmy retreat from the peak summer heat of July. The average high temperature matches that of July's at 77°F (25°C), but it is typically easier on the residents. The climate is ripe for enjoying those late summer garden barbecues or outdoor sporting events. Weather in August »
Weather in September
In September, Greenfield begins its transition from the summer season to fall. The month sees a dip in temperature, and the average high settles around 70.5°F (21.4°C). The weather becomes more temperate, less humid, and rain becomes less frequent. Weather in September »
Weather in October
October brings with it the full onset of autumn in Greenfield. The drop in temperature becomes noticeable, with the average high standing around 57.6°F (14.2°C). Comfortable weather allows residents to enjoy the changing leaves, often capturing the fall colors in photographs. Weather in October »
Weather in November
November in Greenfield indicates the impending arrival of winter as the temperature continues to drop. The city may experience its first snowfall of the season, with a record of 1.73" (44mm). The changing landscape and cooling temperatures proclaim the arrival of the holiday season. Weather in November »
Weather in December
December greets Greenfield residents with cold weather and shorter daylight hours, clearly indicating winter's arrival. The city receives a respectable amount of snowfall, with the average count settling at 1.77" (45mm). This month is a time of winding down, cool winter mornings, and some respite from rainfall. Weather in December »
Updated: Jul 27, 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 an average high-temperature of 26.1°F (-3.3°C) and a low-temperature of 16.2°F (-8.8°C).
What is the most humid month?
With an average relative humidity of 85%, January is the most humid month.
How many days does it rain?
Throughout the year, there are 126 rainfall days, and 19.37" (492mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, October through December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 11.6 days and accumulates 3.03" (77mm) of snow.
How much does it snow?
Throughout the year, there are 43.6 snowfall days, and 11.22" (285mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 3.5h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
What is the driest month?
February and December are months with the least rain when the rain falls for 3.3 days and typically aggregates up to 0.83" (21mm) of rain.
When is Daylight Saving Time (DST)?
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.
When it does not snow?
May through September are months without snowfall in Greenfield.
When are the longest days?
June has the longest days of the year, with an average of 15h and 18min of daylight.
What are the warmest months?
July brings the highest temperatures, with an average high of 77.9°F (25.5°C) and an average low of 64.2°F (17.9°C).
What is the rainiest month?
July is the month with the most rainfall. Rain falls for 15.9 days and accumulates 2.56" (65mm) of precipitation.
What are the months with the most sunshine in Greenfield?
The months with the most sunshine are July and August, with an average of 10.3h of sunshine.
What is the month with the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 6.
What is the least humid month?
October is the least humid month in Greenfield, with an average relative humidity of 75%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 6min of daylight.
Average temperature
Greenfield, WI
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (26.1°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Greenfield, WI
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.08"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Greenfield, WI
- Average wind speed in January:
11.4mph - Average wind speed in February:
11.1mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.2mph - Average wind speed in September:
8.5mph - Average wind speed in October:
10.1mph - Average wind speed in November:
10.7mph - Average wind speed in December:
10.7mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity
Greenfield, WI
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Greenfield, WI
- Average rainfall in January:
0.91" - Average rainfall in February:
0.83" - Average rainfall in March:
1.06" - Average rainfall in April:
2.13" - Average rainfall in May:
2.2" - Average rainfall in June:
2.17"
- Average rainfall in July:
2.56" - Average rainfall in August:
2.17" - Average rainfall in September:
1.54" - Average rainfall in October:
1.93" - Average rainfall in November:
1.06" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is July (2.56").
The driest months (with the least rainfall) are February and December (0.83").
Average rainfall days
Greenfield, WI
- Average rainfall days in January:
3.6 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
9.7 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
13.5 days
- Average rainfall days in July:
15.9 days - Average rainfall days in August:
14.9 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Greenfield, WI
The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Greenfield, WI
- Average snowfall days in January:
11.6 days - Average snowfall days in February:
9.6 days - Average snowfall days in March:
6.2 days - Average snowfall days in April:
2.1 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:
0.6 days - Average snowfall days in November:
4.5 days - Average snowfall days in December:
8.8 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Greenfield, WI
- Average daylight in January:
9h and 2min - 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 3min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Greenfield, WI
- Average sunshine days in January:
15.2 days - Average sunshine days in February:
14.7 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
14 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
12.7 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is November (17.4 days).
The months with the least sunshine days are July and August (12.7 days).
Average UV index
Greenfield, WI
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Greenfield, WI
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility
Greenfield, WI
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).
Greenfield, Wisconsin, USA
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