August weather forecast
Montpelier, IA

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Weather in August

The last month of the summer, August, is another warm month in Montpelier, Iowa, with an average temperature ranging between max 80.8°F (27.1°C) and min 63.1°F (17.3°C).

Temperature

Montpelier in August witnesses an average high-temperature of a still warm 80.8°F (27.1°C), indicating a slight variation from July's 81.7°F (27.6°C). Montpelier reports a consistent average low-temperature of 63.1°F (17.3°C) throughout August nights.

Heat index

The average heat index in August is evaluated at a tropical 86°F (30°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in August is 80%.

Rainfall

In Montpelier, during August, the rain falls for 12.3 days and regularly aggregates up to 1.5" (38mm) of precipitation. In Montpelier, during the entire year, the rain falls for 128 days and collects up to 19.29" (490mm) of precipitation.

Snowfall

In Montpelier, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 47min.
On the first day of August, sunrise is at 5:58 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:37 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

In Montpelier, Iowa, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 5 in August leads to these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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Frequently asked questions

What is the usual temperature for Montpelier in August?

In August, the average high-temperature and low-temperature are 80.8°F (27.1°C) and 63.1°F (17.3°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is evaluated at 86°F (30°C).

What is the average humidity in August in Montpelier?

In Montpelier, the average relative humidity in August is 80%.

How much does it rain in Montpelier in August?

In Montpelier, Iowa, during August, the rain falls for 12.3 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Montpelier?

May through September are months without snowfall in Montpelier.

How many hours of daylight does Montpelier have in August?

In August, the average day length in Montpelier is 13h and 47min.

When are sunrise and sunset in August in Montpelier?

On the first day of August, sunrise is at 5:58 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:37 pm CDT.

How many hours of sunshine does Montpelier have in August?

The average sunshine duration in August in Montpelier is 9.9h.

How high is the UV index in August in Montpelier?

In Montpelier, Iowa, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
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
Montpelier, IA

Average temperature in August - Montpelier, IA
  • Average high temperature in August: 80.8°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in August
Montpelier, IA

Average pressure in August - Montpelier, 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).

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Average wind speed in August
Montpelier, IA

Average wind speed in August - Montpelier, IA
  • Average wind speed in August: 6.7mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

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Average humidity in August
Montpelier, IA

Average humidity in August - Montpelier, IA
  • Average humidity in August: 80%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Montpelier, IA

Average rainfall in August - Montpelier, IA
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is December (0.75").

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Average rainfall days in August
Montpelier, IA

Average rainfall days in August - Montpelier, IA
  • Average rainfall days in August: 12.3 days

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall in August
Montpelier, IA

Average snowfall in August - Montpelier, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Montpelier, IA

Average snowfall days in August - Montpelier, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Montpelier, IA

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

The month with the longest days is June (Average daylight: 15h and 6min).
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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in August
Montpelier, IA

Average sunshine days in August - Montpelier, IA
  • Average sunshine days in August: 15.5 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in August
Montpelier, IA

Average UV index in August - Montpelier, IA
  • Average UV index in August: 5

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

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Average cloud cover in August
Montpelier, IA

Average cloud cover in August - Montpelier, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in August
Montpelier, IA

Average visibility in August - Montpelier, IA
  • Average visibility in August: 6mi

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).

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Montpelier, Iowa, USA

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