October weather forecast
Green Brier, IA

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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).

Temperature

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). During the nights in October, Green Brier experiences a consistent average temperature of 43.9°F (6.6°C).

Humidity

October is the least humid month, with an average relative humidity of 69%.

Rainfall

In Green Brier, in October, during 9.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Green Brier, Iowa, during the entire year, the rain falls for 125.7 days and collects up to 26.5" (673mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows in Green Brier. Throughout October, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, in Green Brier, there are 38.1 snowfall days, and 15.31" (389mm) of snow is accumulated.

Daylight

The average length of the day in October is 11h and 4min.
On the first day of the month, sunrise is at 7:15 am and sunset at 6:58 pm. On the last day of October, in Green Brier, sunrise is at 7:49 am and sunset at 6:12 pm CDT.

Sunshine

In Green Brier, the average sunshine in October is 5.7h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in October transforms into the following instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the average October temperature in Green Brier?

An average high-temperature, in October, in Green Brier, is 59.9°F (15.5°C) and the average low-temperature is 43.9°F (6.6°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is estimated at 89.6°F (32°C).

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, Iowa.

What is the average humidity in October in Green Brier?

The average relative humidity in October in Green Brier, Iowa, is 69%.

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

In Green Brier, in October, during 9.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When does it start to snow in Green Brier?

October is the first month it typically snows in Green Brier. Throughout October, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow.

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

In October, the average day length in Green Brier is 11h and 4min.

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

In October, on the first day of the month, sunrise is at 7:15 am and sunset at 6:58 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 6:12 pm CDT.

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

The average sunshine duration in October is 5.7h.

What is the month with the lowest UV index in Green Brier?

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.

What is the UV index intensity in October in Green Brier?

The average daily maximum UV index in October in Green Brier is 2. A UV Index reading of 2, and below, represents a low health threat 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 October
Green Brier, IA

Average temperature in October - Green Brier, IA
  • Average high temperature in October: 59.9°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 October: 43.9°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 October
Green Brier, IA

Average pressure in October - Green Brier, IA
  • Average pressure in October: 30"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 October
Green Brier, IA

Average wind speed in October - Green Brier, IA
  • Average wind speed in October: 9.6mph

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 October
Green Brier, IA

Average humidity in October - Green Brier, IA
  • Average humidity in October: 69%

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 October
Green Brier, IA

Average rainfall in October - Green Brier, IA
  • Average rainfall in October: 2.2"

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 October
Green Brier, IA

Average rainfall days in October - Green Brier, IA
  • Average rainfall days in October: 9.5 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 October
Green Brier, IA

Average snowfall in October - Green Brier, IA
  • Average snowfall in October: 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 October
Green Brier, IA

Average snowfall days in October - Green Brier, IA
  • Average snowfall days in October: 0.6 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 October /
Average sunshine in October
Green Brier, IA

Average daylight in October / Average sunshine in October - Green Brier, IA
  • Average daylight in October: 11h 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 October: 5h 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 October
Green Brier, IA

Average sunshine days in October - Green Brier, IA
  • Average sunshine days in October: 19.2 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 October
Green Brier, IA

Average UV index in October - Green Brier, IA
  • Average UV index in October: 2

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 October
Green Brier, IA

Average cloud cover in October - Green Brier, IA
  • Average cloud cover in October: 36

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 October
Green Brier, IA

Average visibility in October - Green Brier, IA
  • Average visibility in October: 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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