August weather forecast
Montrose, IA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Montrose, Iowa, with an average temperature ranging between min 64°F (17.8°C) and max 82.8°F (28.2°C).

Temperature

The onset of August brings an average high-temperature of a still moderately hot 82.8°F (28.2°C), nearly matching the July temperature. Throughout August, Montrose anticipates an average low-temperature of 64°F (17.8°C).

Heat index

In August, the heat index is calculated to be a tropical 89.6°F (32°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.
Heat index data is primarily for areas with shade and subjected to light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

The average relative humidity in August is 78%.

Rainfall

In Montrose, in August, during 14.2 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Montrose, during the entire year, the rain falls for 147.8 days and collects up to 30.98" (787mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 44min.
On the first day of August, sunrise is at 6:03 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Jun 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

In Montrose, 82.8°F (28.2°C) is the average high-temperature and 64°F (17.8°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 89.6°F (32°C).

What is the average humidity in August?

In Montrose, the average relative humidity in August is 78%.

How many days does it rain in August?

In Montrose, in August, during 14.2 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

When it does not snow?

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

How many hours of daylight does Montrose have in August?

In Montrose, the average day length in August is 13h and 44min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:03 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.9h.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Montrose, IA

Average temperature in August - Montrose, IA
  • Average high temperature in August: 82.8°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in August
Montrose, IA

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Montrose, IA

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

The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in August
Montrose, IA

Average humidity in August - Montrose, IA
  • Average humidity in August: 78%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Montrose, IA

Average rainfall in August - Montrose, IA
  • Average rainfall in August: 2.52"

The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in August
Montrose, IA

Average rainfall days in August - Montrose, IA
  • Average rainfall days in August: 14.2 days

The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (5.5 days).

Average snowfall in August
Montrose, IA

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

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Montrose, IA

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

The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Montrose, IA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 9h and 5min

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 in August
Montrose, IA

Average sunshine days in August - Montrose, IA
  • Average sunshine days in August: 14.1 days

The month with the most sunshine days is December (17.8 days).
The month with the least sunshine days is June (8.3 days).

Average UV index in August
Montrose, IA

Average UV index in August - Montrose, IA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Montrose, IA

Average cloud cover in August - Montrose, IA
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 30).

Average visibility in August
Montrose, IA

Average visibility in August - Montrose, 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).

Montrose, Iowa, USA

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