August weather forecast
Marengo, IN

Share

Weather in August

The last month of the summer, August, is another warm month in Marengo, Indiana, with an average temperature fluctuating between 85.1°F (29.5°C) and 64.6°F (18.1°C).

Temperature

Transitioning into August, Marengo records an average high-temperature of a moderately hot 85.1°F (29.5°C), almost identical to July's 86.4°F (30.2°C). August in Marengo, Indiana, sees the temperature falling to a mean low of 64.6°F (18.1°C).

Heat index

Throughout August, the heat index is computed to be a very hot 95°F (35°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in August is 76%.

Rainfall

In Marengo, Indiana, during August, the rain falls for 12.8 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, there are 137.1 rainfall days, and 20.28" (515mm) of precipitation is accumulated.

Snowfall

In Marengo, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 37min.
On the first day of August in Marengo, sunrise is at 6:48 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 8:16 pm EDT.

Sunshine

The average sunshine in August in Marengo is 9.3h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Marengo, Indiana. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in Marengo?

The high-temperature, in August, in Marengo, records 85.1°F (29.5°C), while the low-temperature is 64.6°F (18.1°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 95°F (35°C).

What is the average humidity in August in Marengo?

In Marengo, the average relative humidity in August is 76%.

How many days does it rain in August in Marengo?

In Marengo, during August, the rain falls for 12.8 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Marengo?

In Marengo, snow does not fall in May through October.

What is the average length of the day in August in Marengo?

The average day length in August in Marengo is 13h and 37min.

When is the sunrise / sunset in August in Marengo?

In August, on the first day of the month, sunrise is at 6:48 am and sunset at 8:55 pm. On the last day of the month, in Marengo, sunrise is at 7:14 am and sunset at 8:16 pm EDT.

How long on average sun shines in August in Marengo?

In Marengo, the average sunshine duration in August is 9.3h.

What is the month with the highest UV index in Marengo?

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

How high is the UV index in August in Marengo?

In August, the average daily maximum UV index in Marengo, Indiana, 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
Marengo, IN

Average temperature in August - Marengo, IN
  • Average high temperature in August: 85.1°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in August: 64.6°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

Average pressure in August
Marengo, IN

Average pressure in August - Marengo, IN
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Marengo, IN

Average wind speed in August - Marengo, IN
  • Average wind speed in August: 4.8mph

The windiest months (with the highest average wind speed) are January, February and April (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in August
Marengo, IN

Average humidity in August - Marengo, IN
  • Average humidity in August: 76%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August
Marengo, IN

Average rainfall in August - Marengo, IN
  • Average rainfall in August: 1.77"

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is September (0.98").

Average rainfall days in August
Marengo, IN

Average rainfall days in August - Marengo, IN
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (8.2 days).

Average snowfall in August
Marengo, IN

Average snowfall in August - Marengo, IN
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Marengo, IN

Average snowfall days in August - Marengo, IN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.6 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
Marengo, IN

Average daylight in August / Average sunshine in August - Marengo, IN
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 9h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

Average sunshine days in August
Marengo, IN

Average sunshine days in August - Marengo, IN
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (12 days).

Average UV index in August
Marengo, IN

Average UV index in August - Marengo, IN
  • 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
Marengo, IN

Average cloud cover in August - Marengo, IN
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in August
Marengo, IN

Average visibility in August - Marengo, IN
  • Average visibility in August: 5mi

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

Marengo, Indiana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location