August weather forecast
West Branch, IA

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Weather in August

The last month of the summer, August, is another warm month in West Branch, Iowa, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 62.2°F (16.8°C).

Temperature

West Branch experiences an average high-temperature of a still warm 80.4°F (26.9°C) with the onset of August, subtly varied from July's 81°F (27.2°C). In West Branch, the average nighttime temperature during August is an enjoyable 62.2°F (16.8°C).

Humidity

The average relative humidity in August in West Branch is 80%.

Rainfall

In West Branch, during August, the rain falls for 13.1 days and regularly aggregates up to 2.01" (51mm) of precipitation. In West Branch, during the entire year, the rain falls for 139.1 days and collects up to 29.57" (751mm) of precipitation.

Snowfall

May through September are months without snowfall in West Branch.

Daylight

The average length of the day in August is 13h and 48min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:22 pm. On the last day of August, in West Branch, sunrise is at 6:31 am and sunset at 7:39 pm CDT.

Sunshine

In August, the average sunshine in West Branch is 9.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 5 during August translates into the following directions:
Guard yourself - Precautionary measures against sun damage are advocated. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.

Frequently asked questions

What is the temperature in August in West Branch?

An average high-temperature, in August, in West Branch, is 80.4°F (26.9°C) and the average low-temperature is 62.2°F (16.8°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in July is calculated to be 87.8°F (31°C).

What is the average humidity in August in West Branch?

The average relative humidity in August in West Branch, Iowa, is 80%.

How much does it rain in West Branch in August?

In West Branch, in August, during 13.1 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

When it does not snow in West Branch?

In West Branch, Iowa, snow does not fall in May through September.

How many hours of daylight does West Branch have in August?

In August, the average day length in West Branch is 13h and 48min.

When are sunrise and sunset in August in West Branch?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:39 pm CDT.

How many hours of sunshine does West Branch have in August?

In August, the average sunshine duration is 9.9h.

How high is the UV index in August in West Branch?

The average daily maximum UV index in August in West Branch is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
West Branch, IA

Average temperature in August - West Branch, IA
  • Average high temperature in August: 80.4°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in August: 62.2°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 (15.4°F).

Average pressure in August
West Branch, IA

Average pressure in August - West Branch, IA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
West Branch, IA

Average wind speed in August - West Branch, IA
  • Average wind speed in August: 6.8mph

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 (6.8mph).

Average humidity in August
West Branch, IA

Average humidity in August - West Branch, IA
  • Average humidity in August: 80%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
West Branch, IA

Average rainfall in August - West Branch, IA
  • Average rainfall in August: 2.01"

The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in August
West Branch, IA

Average rainfall days in August - West Branch, IA
  • Average rainfall days in August: 13.1 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (4.4 days).

Average snowfall in August
West Branch, IA

Average snowfall in August - West Branch, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (5.24").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
West Branch, IA

Average snowfall days in August - West Branch, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
West Branch, IA

Average daylight in August / Average sunshine in August - West Branch, IA
  • Average daylight in August: 13h and 5min

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 August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in August
West Branch, IA

Average sunshine days in August - West Branch, IA
  • Average sunshine days in August: 14.4 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.2 days).

Average UV index in August
West Branch, IA

Average UV index in August - West Branch, IA
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in August
West Branch, IA

Average cloud cover in August - West Branch, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in August
West Branch, IA

Average visibility in August - West Branch, IA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).

West Branch, Iowa, USA

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