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 average temperature fluctuating between 21.7°F (-5.7°C) and 33.6°F (0.9°C). With an average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 21.7°F (-5.7°C), January is the coldest month. Weather in January »

The last month of the winter, February, is another cold month in Dayton, Ohio, with average temperature varying between 24.6°F (-4.1°C) and 37.9°F (3.3°C). In February, the average high-temperature is almost the same as in January - a still cold 37.9°F (3.3°C). Weather in February »

The first month of the spring, March, is a chilly month in Dayton, Ohio, with temperature in the range of an average low of 34.2°F (1.2°C) and an average high of 49.5°F (9.7°C). In March, the average high-temperature rises, from a cold 37.9°F (3.3°C) in February, to a frosty 49.5°F (9.7°C). Weather in March »

April is an enjoyable spring month in Dayton, Ohio, with average temperature fluctuating between 61.3°F (16.3°C) and 43.9°F (6.6°C). In Dayton, Ohio, the average high-temperature rises, from a frosty 49.5°F (9.7°C) in March, to a comfortable 61.3°F (16.3°C). Weather in April »

May, the last month of the spring, in Dayton, is a pleasant month, with average temperature ranging between max 71.2°F (21.8°C) and min 54.7°F (12.6°C). In May, the average high-temperature rises, from an enjoyable 61.3°F (16.3°C) in April, to a pleasant 71.2°F (21.8°C). Weather in May »

The first month of the summer, June, is a warm month in Dayton, Ohio, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 61.9°F (16.6°C). In June, the average high-temperature slightly increases, from a pleasant 71.2°F (21.8°C) in May, to a warm 78.4°F (25.8°C). Weather in June »

July, the same as June, is another warm summer month in Dayton, Ohio, with average temperature varying between 81.3°F (27.4°C) and 64.9°F (18.3°C). The warmest month is July, with an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64.9°F (18.3°C). In July, the average heat index is appraised at a tropical 87.4°F (30.8°C). Weather in July »

August, the last month of the summer, in Dayton, is also a moderately hot month, with average temperature fluctuating between 62.4°F (16.9°C) and 80.2°F (26.8°C). In Dayton, the average high-temperature is essentially the same as in July - a still warm 80.2°F (26.8°C). Weather in August »

September, the first month of the autumn, in Dayton, is also a moderately hot month, with temperature in the range of an average high of 75°F (23.9°C) and an average low of 57°F (13.9°C). In September, the average high-temperature is essentially the same as in August - a still warm 75°F (23.9°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Dayton, Ohio, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 62.6°F (17°C). In Dayton, Ohio, the average high-temperature decreases, from a moderately hot 75°F (23.9°C) in September, to a comfortable 62.6°F (17°C). Weather in October »

The last month of the autumn, November, is also a frosty month in Dayton, Ohio, with average temperature ranging between min 35.6°F (2°C) and max 49.1°F (9.5°C). In Dayton, the average high-temperature decreases, from a comfortable 62.6°F (17°C) in October, to a frosty 49.1°F (9.5°C). Weather in November »

The first month of the winter, December, is also a wintry month in Dayton, Ohio, with average temperature varying between 39.2°F (4°C) and 28.9°F (-1.7°C). In Dayton, the average high-temperature in December decreases, from a chilly 49.1°F (9.5°C) in November, to a cold 39.2°F (4°C). Weather in December »

What is the coldest month in Dayton?

January is the coldest month, with an average high-temperature of 33.6°F (0.9°C) and an average low-temperature of 21.7°F (-5.7°C).

What are the most humid months in Dayton?

January, February and December, with an average relative humidity of 82%, are most humid months in Dayton, Ohio.

How many days does it rain in Dayton?

In Dayton, Ohio, during the entire year, the rain falls for 149.5 days and collects up to 23.9" (607mm) of precipitation.

When does it snow in Dayton?

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

How much does it snow in Dayton?

In Dayton, Ohio, during the entire year, snow falls for 26.5 days, and aggregates up to 7.68" (195mm) of snow.

What is the snowiest month in Dayton?

The month with the most snowfall is January when snow falls for 8.2 days and typically aggregates up to 2.05" (52mm) of snow.

What is the month with the least sunshine in Dayton?

The month with the least sunshine in Dayton, Ohio, is January, with an average of 3.7h of sunshine.

What is the month with the lowest UV index in Dayton?

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

What is the wettest month in Dayton?

The month with the most rainfall is May when the rain falls for 18.8 days and typically aggregates up to 3.35" (85mm) of precipitation.

When it does not snow in Dayton?

May through September are months without snowfall in Dayton, Ohio.

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 are the months with the most sunshine in Dayton?

Months with the most sunshine in Dayton, Ohio, are June and July, with an average of 10.2h of sunshine.

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

Months with the highest UV index in Dayton are June through August, with an average maximum UV index of 6.

What is the warmest month in Dayton?

With an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64.9°F (18.3°C), July is the warmest month in Dayton, Ohio.

What is the driest month in Dayton?

Months with the least rainfall in Dayton, Ohio, are September and November Rain falls for 12.5 days and accumulates 1.5" (38mm) of rain.

What is the least humid month in Dayton?

The least humid month is October, with an average relative humidity of 74%.

What is the month with the shortest days in Dayton?

December has the shortest days of the year in Dayton, Ohio, with an average of 9.4h of daylight.
Average temperature - Dayton, OH
Average humidity - Dayton, OH
Average rainfall - Dayton, OH

The wettest month (with the highest rainfall) is May (3.35").
Driest months (with the lowest rainfall) are September and November (1.5").

Average rainfall days - Dayton, OH

The month with the highest number of rainy days is May (18.8 days).
The month with the lowest number of rainy days is February (7.5 days).

Average snowfall - Dayton, OH
Average snowfall days - Dayton, OH

The month with the highest number of snowfall days is January (8.2 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Dayton, OH

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

Months with most sunshine are June and July (Average sunshine: 10.2h).
The month with least sunshine is January (Average sunshine: 3.7h).

Average UV index - Dayton, OH