May weather forecast
Green Brier, IA

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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).

Temperature

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). Green Brier's nights in May cool down to an average low-temperature of 53.1°F (11.7°C).

Humidity

In Green Brier, Iowa, the average relative humidity in May is 74%.

Rainfall

May is the month with the most rainfall. Rain falls for 16.2 days and accumulates 4.06" (103mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Green Brier. May is the last month it regularly snows in Green Brier. During 0.3 snowfall days, in May, Green Brier aggregates 0.12" (3mm) of snow. In Green Brier, during the entire year, snow falls for 38.1 days and aggregates up to 15.31" (389mm) of snow.

Daylight

In Green Brier, Iowa, the average length of the day in May is 14h and 35min.
On the first day of May in Green Brier, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:46 pm CDT.

Sunshine

In Green Brier, Iowa, the average sunshine in May is 8.6h.

UV index

In Green Brier, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 5 during May translates into the following directions:
Heed the precautions - It is counselled to guard against solar damage. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What are May temperatures in Green Brier?

During May, Green Brier experiences an average high-temperature of 69.4°F (20.8°C) and a low-temperature of 53.1°F (11.7°C).

What is the average humidity in May in Green Brier?

In May, the average relative humidity is 74%.

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.

How many days does it rain in May in Green Brier?

In Green Brier, Iowa, during May, the rain falls for 16.2 days and regularly aggregates up to 4.06" (103mm) of precipitation.

What is the last month it snows in Green Brier?

May is the last month it regularly snows in Green Brier, Iowa. During 0.3 snowfall days, in May, Green Brier aggregates 0.12" (3mm) of snow.

How many hours of daylight does Green Brier have in May?

In Green Brier, Iowa, the average day length in May is 14h and 35min.

When is the sunrise / sunset in May in Green Brier?

On the first day of May in Green Brier, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:46 pm CDT.

How long on average sun shines in May in Green Brier?

In May, the average sunshine duration is 8.6h.

What is the UV index reading in May in Green Brier?

In May, the average daily maximum UV index in Green Brier, Iowa, is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Green Brier, IA

Average temperature in May - Green Brier, IA
  • Average high temperature in May: 69.4°F

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).

  • Average low temperature in May: 53.1°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).

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Average pressure in May
Green Brier, IA

Average pressure in May - Green Brier, IA
  • Average pressure in May: 29.93"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).

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Average wind speed in May
Green Brier, IA

Average wind speed in May - Green Brier, IA
  • Average wind speed in May: 9.1mph

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).

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Average humidity in May
Green Brier, IA

Average humidity in May - Green Brier, IA
  • Average humidity in May: 74%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in May
Green Brier, IA

Average rainfall in May - Green Brier, IA
  • Average rainfall in May: 4.06"

The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in May
Green Brier, IA

Average rainfall days in May - Green Brier, IA
  • Average rainfall days in May: 16.2 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).

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Average snowfall in May
Green Brier, IA

Average snowfall in May - Green Brier, IA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Green Brier, IA

Average snowfall days in May - Green Brier, IA
  • Average snowfall days in May: 0.3 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).

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Average daylight in May /
Average sunshine in May
Green Brier, IA

Average daylight in May / Average sunshine in May - Green Brier, IA
  • Average daylight in May: 14h and 4min

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 May: 8h 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).

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Average sunshine days in May
Green Brier, IA

Average sunshine days in May - Green Brier, IA
  • Average sunshine days in May: 13.3 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).

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Average UV index in May
Green Brier, IA

Average UV index in May - Green Brier, IA
  • Average UV index in May: 5

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).

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Average cloud cover in May
Green Brier, IA

Average cloud cover in May - Green Brier, IA
  • Average cloud cover in May: 42

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).

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Average visibility in May
Green Brier, IA

Average visibility in May - Green Brier, IA
  • Average visibility in May: 6mi

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).

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Green Brier, Iowa, USA

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