Dayton
Ohio, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Dayton, OH

The Maimi and Mad rivers converge to flow through Dayton city, Ohio, viewed from above
The Maimi and Mad rivers converge to flow through Dayton city, Ohio, viewed from above
The last month of the summer, August, is another warm month in Dayton, Ohio, with average temperature ranging between min 62.8°F (17.1°C) and max 82.6°F (28.1°C).

Temperature

In August, the average high-temperature is almost the same as in July - a still moderately hot 82.6°F (28.1°C). The average low-temperature, in August, is 62.8°F (17.1°C).

Humidity

The average relative humidity in Dayton, Ohio, is 71.5%.

Rainfall

In August, the rain falls for 8.4 days. Throughout August, 3" (75.9mm) of precipitation is accumulated. Throughout the year, in Dayton, there are 135.8 rainfall days, and 41" (1042.5mm) of precipitation is accumulated.

Snowfall

Throughout the year, 23.3" (591.9mm) of snow is accumulated.

Daylight

In August, the average length of the day is 13.7h.

Sunshine

In August, the average sunshine in Dayton is 8.9h.

UV index

The average daily maximum UV index in August is 8. A UV Index estimate of 8 to 10 represents a very high threat to health from unsafe exposure to the UV radiation for ordinary individuals.
In August, the average maximum UV index of 8 translate into the following recommendations:
Take extra precautions. Protection against sun damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in August in Dayton?

In Dayton, in August, the average high-temperature is 82.6°F (28.1°C), and the average low-temperature is 62.8°F (17.1°C).

What is the average humidity in August in Dayton?

In August, the average relative humidity is 71.5%.

How much does it rain in Dayton in August?

In August, in Dayton, the rain falls for 8.4 days. Throughout August, 3" (75.9mm) of precipitation is accumulated.

How many hours of daylight does Dayton have in August?

In August, the average length of the day in Dayton, Ohio, is 13.7h.

How long on average sun shines in August in Dayton?

In Dayton, the average sunshine in August is 8.9h.

What is the UV index intensity in August in Dayton?

In August, the average daily maximum UV index in Dayton, Ohio, is 8. A UV Index value of 8 to 10 symbolizes a very high hazard to health from the exposure to the Sun's UV rays.
Average temperature in August - Dayton, OH
  • Average high temperature in August: 82.6°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in August: 62.7°F

The month with the highest average low temperature is July (64.5°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average humidity in August - Dayton, OH
  • Average humidity in August: 71.5%

The month with the highest relative humidity is December (75.8%).
The month with the lowest relative humidity is April (64.2%).

Average rainfall in August - Dayton, OH
  • Average rainfall in August: 3"

The wettest month (with the highest rainfall) is May (4.7").
The driest month (with the lowest rainfall) is February (2.2").

Average rainfall days in August - Dayton, OH
  • Average rainfall days in August: 8.4 days

The month with the highest number of rainy days is May (13.7 days).
The month with the lowest number of rainy days is August (8.4 days).

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

The month with the highest snowfall is January (7.9").
Months with the lowest snowfall are May, June, July, August and September (0").

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

The month with the highest number of snowfall days is January (6.3 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Dayton, OH
  • Average daylight in August: 13.7h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in August: 8.9h

The month with most sunshine is June (Average sunshine: 9.8h).
The month with least sunshine is December (Average sunshine: 3.2h).

Average UV index in August - Dayton, OH
  • Average UV index in August: 8

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).