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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, like December, is a freezing cold winter month in Green Brier, Iowa, with an average temperature varying between 26.8°F (-2.9°C) and 13.5°F (-10.3°C). January, on average, is the coldest month, registering a high temperature of 26.8°F (-2.9°C) and a low of 13.5°F (-10.3°C). Weather in January »
Weather in February
February, the last month of the winter in Green Brier, is also a subzero cold month, with temperature in the range of an average high of 30.6°F (-0.8°C) and an average low of 16.9°F (-8.4°C). The arrival of February denotes a barely perceptible change in the average high-temperatures to a still subzero cold 30.6°F (-0.8°C) from January's 26.8°F (-2.9°C). Weather in February »
Weather in March
March, the first month of the spring in Green Brier, is a chilly month, with an average temperature ranging between max 46°F (7.8°C) and min 31.1°F (-0.5°C). March's onset brings a noticeable temperature rise, soaring from a subzero cold 30.6°F (-0.8°C) in February to a frosty 46°F (7.8°C). Weather in March »
Weather in April
April is a moderate spring month in Green Brier, Iowa, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 42.1°F (5.6°C). April signals a shift in the average high-temperature, moving from March's chilly 46°F (7.8°C) to a refreshing 58.5°F (14.7°C). Weather in April »
Weather in May
May, the last month of the spring in Green Brier, is an agreeable month, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 53.1°F (11.7°C). With the onset of May, Green Brier's weather sees a temperature rise, transitioning from a mild 58.5°F (14.7°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 Green Brier, is a moderately hot month, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 62.8°F (17.1°C). June's arrival sees a rise in the average high-temperature, jumping from May's pleasant 69.4°F (20.8°C) to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Green Brier, Iowa, with an average temperature fluctuating between 82°F (27.8°C) and 64.6°F (18.1°C). July is the month that records the highest temperatures, with averages ranging from a high of 82°F (27.8°C) to a low of 64.6°F (18.1°C). For most parts of July, the heat index is estimated at a hot 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Green Brier, Iowa, with an average temperature fluctuating between 61.5°F (16.4°C) and 80.1°F (26.7°C). The arrival of August marks a slight shift to an average high-temperature of a still moderately hot 80.1°F (26.7°C) from July's 82°F (27.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Green Brier, is also a moderately hot month, with an average temperature varying between 74.8°F (23.8°C) and 55.8°F (13.2°C). In September, Green Brier experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 80.1°F (26.7°C) in August to a still moderately hot 74.8°F (23.8°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Green Brier, Iowa, with an average temperature fluctuating between 59.9°F (15.5°C) and 43.9°F (6.6°C). The start of October signals a clear decrease in the average high-temperature, falling from a moderately hot 74.8°F (23.8°C) in September to a moderate 59.9°F (15.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Green Brier, Iowa, with an average temperature ranging between max 45.9°F (7.7°C) and min 32.5°F (0.3°C). The onset of November is marked by a decrease in temperature, transitioning from a mild 59.9°F (15.5°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 wintry month in Green Brier, Iowa, with an average temperature ranging between max 32°F (0°C) and min 21°F (-6.1°C). The onset of December entails a temperature shift, as the average high-temperature decreases from a frosty 45.9°F (7.7°C) in November to a wintry 32°F (0°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 is the coldest time of year in Green Brier?
With its average high temperature of 26.8°F (-2.9°C) and a low of 13.5°F (-10.3°C), January is regarded as the coldest month.
What is the most humid month in Green Brier?
January is the most humid month, with an average relative humidity of 84%.
What is the driest month in Green Brier?
The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.87" (22mm) of precipitation.
How much does it rain in Green Brier?
Throughout the year, in Green Brier, Iowa, there are 125.7 rainfall days, and 26.5" (673mm) of precipitation is accumulated.
When does it snow in Green Brier?
Months with snowfall in Green Brier are January through May, October through December.
What is the snowiest month in Green Brier?
January is the month with the most snowfall. Snow falls for 9.8 days and accumulates 4.29" (109mm) of snow.
How many days does it snow in Green Brier?
Throughout the year, there are 38.1 snowfall days, and 15.31" (389mm) of snow is accumulated.
What is the month with the least sunshine in Green Brier?
The month with the least sunshine in Green Brier, Iowa, is January, with an average of 4.2h of sunshine.
What are the months with the lowest UV index in Green Brier?
The months with the lowest UV index in Green Brier are January, February, October through December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST) in Green Brier?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Green Brier, 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 rainiest month in Green Brier?
The month with the most rainfall in Green Brier is May, when the rain falls for 16.2 days and typically aggregates up to 4.06" (103mm) of precipitation.
When it does not snow in Green Brier?
June through September are months without snowfall.
When are the longest days in Green Brier?
June has the longest days of the year in Green Brier, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Green Brier?
The months with the highest UV index in Green Brier, Iowa, are June and July, with an average maximum UV index of 6.
What part of the year is the hottest in Green Brier?
The warmest temperatures occur during July, when averages reach a peak of 82°F (27.8°C) and a low of 64.6°F (18.1°C).
What month has the most sunshine in Green Brier?
The month with the most sunshine is July, with an average of 10.2h of sunshine.
What is the least humid month in Green Brier?
With an average relative humidity of 69%, October is the least humid month in Green Brier.
What is the month with the shortest days in Green Brier?
December has the shortest days of the year in Green Brier, with an average of 9h and 12min of daylight.
Average temperature
Green Brier, IA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Green Brier, IA
- Average pressure in January:
30.16"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 (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Green Brier, IA
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - 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:
10.4mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity
Green Brier, IA
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Green Brier, IA
- Average rainfall in January:
0.87" - Average rainfall in February:
1.02" - Average rainfall in March:
1.54" - Average rainfall in April:
2.76" - Average rainfall in May:
4.06" - Average rainfall in June:
3.94"
- Average rainfall in July:
2.28" - Average rainfall in August:
2.44" - Average rainfall in September:
2.91" - Average rainfall in October:
2.2" - Average rainfall in November:
1.14" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days
Green Brier, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.4 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
16.2 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
13 days - Average rainfall days in September:
11.2 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
4.8 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall
Green Brier, IA
- Average snowfall in January:
4.29" - Average snowfall in February:
3.66" - Average snowfall in March:
1.89" - Average snowfall in April:
1.26" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Green Brier, IA
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
1.7 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:
0.6 days - Average snowfall days in November:
3.4 days - Average snowfall days in December:
8.3 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Green Brier, IA
- Average daylight in January:
9h and 3min - 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 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 1min
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 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 4min - 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 4min
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 12min).
Average sunshine days
Green Brier, IA
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
16 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.2 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Green Brier, 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, October, November and December (UV index 2).
Average cloud cover
Green Brier, IA
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility
Green Brier, IA
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Green Brier, Iowa, USA
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