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

Monthly weather forecast and climate
Dayton, OH

January, the same as December, is a wintry winter month in Dayton, Ohio, 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 »

February, the last month of the winter, in Dayton, is also a wintry month, 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 essentially the same as in January - a still wintry 37.9°F (3.3°C). Weather in February »

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

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

The last month of the spring, May, is an agreeable month in Dayton, Ohio, with average temperature fluctuating between 54.7°F (12.6°C) and 71.2°F (21.8°C). In May, the average high-temperature increases, 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 average temperature ranging between max 78.4°F (25.8°C) and min 61.9°F (16.6°C). In Dayton, the average high-temperature in June marginally rises, from an agreeable 71.2°F (21.8°C) in May, to a warm 78.4°F (25.8°C). Weather in June »

July, like June, in Dayton, Ohio, is a moderately hot summer month, with average temperature fluctuating 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). The average heat index is calculated to 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 80.2°F (26.8°C) and 62.4°F (16.9°C). In Dayton, Ohio, the average high-temperature in August is practically the same as in July - a still moderately hot 80.2°F (26.8°C). Weather in August »

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

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

The last month of the autumn, November, is another chilly month in Dayton, Ohio, with average temperature fluctuating between 35.6°F (2°C) and 49.1°F (9.5°C). In Dayton, the average high-temperature in November 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 temperature in the range of an average high of 39.2°F (4°C) and an average low of 28.9°F (-1.7°C). In December, the average high-temperature drops, from a frosty 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 in Dayton, 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 is the most humid month in Dayton?

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

How many days does it rain in Dayton?

Throughout the year, there are 149.5 rainfall days, and 23.9" (607mm) of precipitation is accumulated.

When does it snow in Dayton?

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

How many days does it snow in Dayton?

Throughout the year, in Dayton, Ohio, there are 26.5 snowfall days, and 7.68" (195mm) of snow is accumulated.

What is the snowiest month in Dayton?

January is the month with the most snowfall in Dayton. Snow falls for 8.2 days and accumulates 2.05" (52mm) of snow.

What is the month with the least sunshine in Dayton?

January has the least sunshine of the year, with an average of 3.7h of sunshine.

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

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

What is the rainiest month in Dayton?

May is the month with the most rainfall. Rain falls for 18.8 days and accumulates 3.35" (85mm) of precipitation.

When it does not snow in Dayton?

In Dayton snow does not fall in May through September.

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?

June and July, with an average of 10.2h of sunshine, are months with the most sunshine.

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

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

What is the warmest month in Dayton?

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).

What is the driest month in Dayton?

September and November are months with the least rain in Dayton when the rain falls for 12.5 days and typically aggregates up to 1.5" (38mm) of rain.

What is the least humid month in Dayton?

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

What is the month with the shortest days in Dayton?

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

The wettest month (with the highest rainfall) is May (85mm).
The driest months (with the least rainfall) are September and November (38mm).

Average rainfall days - Dayton, OH

The month with the highest number of rainy days is May (18.8 days).
The month with the least 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 least 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 the shortest days is December (Average daylight: 9.4h).

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

Average UV index - Dayton, OH