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

Monthly 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
January, like December, in Dayton, Ohio, is a wintry winter month, with temperature in the range of an average low of 20.3°F (-6.5°C) and an average high of 34.7°F (1.5°C). The coldest month is January, with an average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 20.3°F (-6.5°C). Weather in January »
February, the last month of the winter, in Dayton, is also a wintry month, with average temperature varying between 38.8°F (3.8°C) and 23.2°F (-4.9°C). In Dayton, the average high-temperature is almost the same as in January - a still cold 38.8°F (3.8°C). Weather in February »

March, the first month of the spring, in Dayton, is a chilly month, with temperature in the range of an average high of 49.6°F (9.8°C) and an average low of 31.3°F (-0.4°C). In Dayton, the average high-temperature in March rises, from a cold 38.8°F (3.8°C) in February, to a frosty 49.6°F (9.8°C). Weather in March »

April is an enjoyable spring month in Dayton, Ohio, with temperature in the range of an average low of 41.4°F (5.2°C) and an average high of 61.9°F (16.6°C). In April, the average high-temperature rises, from a frosty 49.6°F (9.8°C) in March, to an enjoyable 61.9°F (16.6°C). Weather in April »

May, the last month of the spring, in Dayton, is an agreeable month, with temperature in the range of an average high of 71.4°F (21.9°C) and an average low of 51.4°F (10.8°C). In May, the average high-temperature rises, from an enjoyable 61.9°F (16.6°C) in April, to an agreeable 71.4°F (21.9°C). Weather in May »

June, the first month of the summer, in Dayton, is a moderately hot month, with average temperature varying between 61°F (16.1°C) and 80.2°F (26.8°C). In June, the average high-temperature slightly increases, from a pleasant 71.4°F (21.9°C) in May, to a moderately hot 80.2°F (26.8°C). Weather in June »

July, like June, in Dayton, Ohio, is a moderately hot summer month, with average temperature varying between 83.8°F (28.8°C) and 64.6°F (18.1°C). The warmest month is July, with an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 64.6°F (18.1°C). Weather in July »

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

The first month of the autumn, September, is also a moderately hot month in Dayton, Ohio, with average temperature varying between 54.9°F (12.7°C) and 75.9°F (24.4°C). In Dayton, the average high-temperature marginally drops, from 82.6°F (28.1°C) in August, to a still warm 75.9°F (24.4°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Dayton, Ohio, with average temperature ranging between min 44.1°F (6.7°C) and max 63.9°F (17.7°C). In Dayton, the average high-temperature in October decreases, from a moderately hot 75.9°F (24.4°C) in September, to an enjoyable 63.9°F (17.7°C). Weather in October »

The last month of the autumn, November, is another cool month in Dayton, Ohio, with average temperature fluctuating between 34.5°F (1.4°C) and 51.1°F (10.6°C). In November, the average high-temperature drops, from an enjoyable 63.9°F (17.7°C) in October, to a fresh 51.1°F (10.6°C). Weather in November »

The first month of the winter, December, is also a wintry month in Dayton, Ohio, with average temperature fluctuating between 38.1°F (3.4°C) and 24.3°F (-4.3°C). In Dayton, the average high-temperature drops, from a fresh 51.1°F (10.6°C) in November, to a cold 38.1°F (3.4°C). Weather in December »

What is the coldest month in Dayton?

January is the coldest month, with an average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 20.3°F (-6.5°C).

How many days does it rain in Dayton?

In Dayton, during the entire year, the rain falls for 135.8 days and collects up to 41" (1042.5mm) of precipitation.

When does it snow in Dayton?

Months with snowfall are January through April, October through December.

How many days does it snow in Dayton?

In Dayton, during the entire year, snow falls for 21.3 days, and aggregates up to 23.3" (591.9mm) of snow.

When does it snow the most in Dayton?

The month with the most snowfall in Dayton is January when snow falls for 6.3 days and typically aggregates up to 7.9" (200.7mm) of snow.

What are the months with the lowest UV index in Dayton?

Months with the lowest UV index are January, November and December, with an average maximum UV index of 2.

What is the driest month in Dayton?

The month with the least rainfall in Dayton, Ohio, is February when the rain falls for 11.2 days and typically collects 2.2" (56.9mm) of precipitation.

What is the least humid month in Dayton?

With an average relative humidity of 64.2%, April is the least humid month.

What is the rainiest month in Dayton?

May is the month with the most rainfall in Dayton. Rain falls for 13.7 days and accumulates 4.7" (118.4mm) of precipitation.

When are the longest days in Dayton?

The month with the longest days in Dayton is June, with an average of 15h of daylight.

What month has the most sunshine in Dayton?

June has the most sunshine of the year in Dayton, with an average of 9.8h of sunshine.

What are the months with the highest UV index in Dayton?

Months with the highest UV index are June and July, with an average maximum UV index of 9.

What is the warmest month in Dayton?

With an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 64.6°F (18.1°C), July is the warmest month.

What is the most humid month in Dayton?

December is the most humid month in Dayton, with an average relative humidity of 75.8%.

What is the month with the shortest days in Dayton?

The month with the shortest days in Dayton is December, with an average of 9.4h of daylight.

What is the month with the least sunshine in Dayton?

The month with the least sunshine is December, with an average of 3.2h of sunshine.
Average temperature - Dayton, OH
Average humidity - Dayton, OH
Average rainfall - Dayton, OH
Average rainfall days - Dayton, OH

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 - Dayton, OH
Average snowfall days - Dayton, OH

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 / Average sunshine - Dayton, OH