August weather forecast
Gahanna, OH

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Weather in August

The last month of the summer, August, is another warm month in Gahanna, Ohio, with an average temperature varying between 62.8°F (17.1°C) and 82°F (27.8°C).

Temperature

Gahanna marks the arrival of August with an average high-temperature of a still warm 82°F (27.8°C), hardly different from July's 82.9°F (28.3°C). Throughout August nights, Gahanna registers an average low-temperature of 62.8°F (17.1°C).

Heat index

August's average heat index is calculated to be a hot 87.8°F (31°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Understand that the heat index values take into account shaded locations and mild winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. 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. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

In August, the average relative humidity is 75%.

Rainfall

In Gahanna, in August, during 13.3 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Gahanna, during the entire year, the rain falls for 139.3 days and collects up to 20.31" (516mm) of precipitation.

Snowfall

In Gahanna, Ohio, snow does not fall in May through October.

Daylight

The average length of the day in August is 13h and 42min.
On the first day of the month, sunrise is at 6:30 am and sunset at 8:45 pm. On the last day of August, sunrise is at 6:59 am and sunset at 8:04 pm EDT.

Sunshine

With an average of 10.5h of sunshine, August has the most sunshine of the year.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 6 in August translates into this advice:
Guard against overexposure. Protection from sun-induced harm is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

The average high-temperature, in August, in Gahanna, is 82°F (27.8°C), while the average low-temperature is 62.8°F (17.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August?

In Gahanna, Ohio, the average relative humidity in August is 75%.

How much does it rain in August?

In Gahanna, in August, during 13.3 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall in Gahanna.

How many hours of daylight does Gahanna have in August?

In August, the average day length is 13h and 42min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:30 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 8:04 pm EDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.5h of sunshine.

How many hours of sunshine does Gahanna have in August?

In August, the average sunshine duration is 10.5h.

When is the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk 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
Gahanna, OH

Average temperature in August - Gahanna, OH
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in August: 62.8°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in August
Gahanna, OH

Average pressure in August - Gahanna, OH
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Gahanna, OH

Average wind speed in August - Gahanna, OH
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in August
Gahanna, OH

Average humidity in August - Gahanna, OH
  • Average humidity in August: 75%

The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are April, October and November (74%).

Average rainfall in August
Gahanna, OH

Average rainfall in August - Gahanna, OH
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is September (1.02").

Average rainfall days in August
Gahanna, OH

Average rainfall days in August - Gahanna, OH
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (6.7 days).

Average snowfall in August
Gahanna, OH

Average snowfall in August - Gahanna, OH
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Gahanna, OH

Average snowfall days in August - Gahanna, OH
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Gahanna, OH

Average daylight in August / Average sunshine in August - Gahanna, OH
  • 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 24min).

  • Average sunshine in August: 10h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in August
Gahanna, OH

Average sunshine days in August - Gahanna, OH
  • Average sunshine days in August: 14.6 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in August
Gahanna, OH

Average UV index in August - Gahanna, OH
  • Average UV index in August: 6

The months with the highest UV index are May, 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
Gahanna, OH

Average cloud cover in August - Gahanna, OH
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in August
Gahanna, OH

Average visibility in August - Gahanna, OH
  • 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).

Gahanna, Ohio, USA

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