August weather forecastMenlo, IA
August
Weather in August
August, the last month of the summer in Menlo, is another warm month, with an average temperature fluctuating between 81°F (27.2°C) and 62.2°F (16.8°C).Temperature
Menlo experiences a transition to a still moderately hot 81°F (27.2°C) in average high-temperatures with the arrival of August, not greatly differing from July's 82.2°F (27.9°C). Throughout August, Menlo experiences a low-temperature average of 62.2°F (16.8°C).Heat index
The heat index for August is evaluated at a tropical 86°F (30°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In August, the average relative humidity is 79%.Rainfall
In August, the rain falls for 12.8 days. Throughout August, 2.09" (53mm) of precipitation is accumulated. Throughout the year, there are 117.3 rainfall days, and 19.09" (485mm) of precipitation is accumulated.Snowfall
In Menlo, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 47min.On the first day of August in Menlo, Iowa, sunrise is at 6:13 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:51 pm CDT.
Sunshine
The average sunshine in August in Menlo, Iowa, is 9.7h.UV index
The months with the highest UV index in Menlo are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Menlo, IA
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in August
Menlo, IA
- Average pressure in August: 29.96"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).
Average wind speed in August
Menlo, IA
- Average wind speed in August: 7.2mph
The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in August
Menlo, IA
- Average humidity in August: 79%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in August
Menlo, IA
- Average rainfall in August: 2.09"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Menlo, IA
- Average rainfall days in August: 12.8 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in August
Menlo, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Menlo, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Menlo, IA
- Average daylight in August: 13h and 48min
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 42min
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 18min).
Average sunshine days in August
Menlo, IA
- Average sunshine days in August: 15.8 days
The month with the most sunshine days is December (22 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in August
Menlo, 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 and December (UV index 1).
Average cloud cover in August
Menlo, IA
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in August
Menlo, IA
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).





