May weather forecast
Dayton, VA

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Weather in May

The last month of the spring, May, is a pleasant month in Dayton, Virginia, with an average temperature varying between 51.3°F (10.7°C) and 72.1°F (22.3°C).

Temperature

The arrival of May sees a shift in the average high-temperature, moving from a refreshing 62.6°F (17°C) in April to a pleasant 72.1°F (22.3°C). Dayton experiences an average temperature drop to a cool 51.3°F (10.7°C) during May nights.

Humidity

May, September and October, with an average relative humidity of 78%, are the most humid months in Dayton.

Rainfall

The month with the most rainfall is May, when the rain falls for 18.9 days and typically aggregates up to 3.46" (88mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Dayton. During 0.1 snowfall days, in May, Dayton aggregates 0.08" (2mm) of snow. Throughout the year, in Dayton, there are 23.3 snowfall days, and 16.89" (429mm) of snow is accumulated.

Daylight

The average length of the day in May in Dayton, Virginia, is 14h and 17min.
On the first day of May, sunrise is at 6:17 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:33 pm EDT.

Sunshine

In Dayton, the average sunshine in May is 9h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In May, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. To guard against the harmful effects of the Sun, minimize exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Frequently asked questions

What is the temperature in May in Dayton?

The high-temperature in Dayton, Virginia, during May is 72.1°F (22.3°C) and the low-temperature is 51.3°F (10.7°C).

What is the most humid month in Dayton?

The months with the highest humidity in Dayton are May, September and October, with an average relative humidity of 78%.

What is the average humidity in May in Dayton?

The average relative humidity in May is 78%.

What is the rainiest month in Dayton?

The month with the most rainfall in Dayton is May, when the rain falls for 18.9 days and typically aggregates up to 3.46" (88mm) of precipitation.

How much does it rain in Dayton in May?

In Dayton, Virginia, during May, the rain falls for 18.9 days and regularly aggregates up to 3.46" (88mm) of precipitation.

What is the last month it snows in Dayton?

May is the last month it regularly snows in Dayton. During 0.1 snowfall days, in May, Dayton aggregates 0.08" (2mm) of snow.

What is the average length of the day in May in Dayton?

In May, the average day length in Dayton is 14h and 17min.

What time are sunrise and sunset in May in Dayton?

On the first day of May in Dayton, Virginia, sunrise is at 6:17 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 8:33 pm EDT.

How many hours of sunshine does Dayton have in May?

The average sunshine duration in May in Dayton is 9h.

What is the UV index reading in May in Dayton?

In Dayton, Virginia, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Dayton, VA

Average temperature in May - Dayton, VA
  • Average high temperature in May: 72.1°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 (38.8°F).

  • Average low temperature in May: 51.3°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in May
Dayton, VA

Average pressure in May - Dayton, VA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in May
Dayton, VA

Average wind speed in May - Dayton, VA
  • Average wind speed in May: 5.6mph

The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in May
Dayton, VA

Average humidity in May - Dayton, VA
  • Average humidity in May: 78%

The months with the highest relative humidity are May, September and October (78%).
The months with the lowest relative humidity are January and July (74%).

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Average rainfall in May
Dayton, VA

Average rainfall in May - Dayton, VA
  • Average rainfall in May: 3.46"

The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.77").

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Average rainfall days in May
Dayton, VA

Average rainfall days in May - Dayton, VA
  • Average rainfall days in May: 18.9 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall in May
Dayton, VA

Average snowfall in May - Dayton, VA
  • Average snowfall in May: 0.08"

The month with the highest snowfall is March (4.45").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Dayton, VA

Average snowfall days in May - Dayton, VA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Dayton, VA

Average daylight in May / Average sunshine in May - Dayton, VA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in May
Dayton, VA

Average sunshine days in May - Dayton, VA
  • Average sunshine days in May: 9.9 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.9 days).

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Average UV index in May
Dayton, VA

Average UV index in May - Dayton, VA
  • Average UV index in May: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Dayton, VA

Average cloud cover in May - Dayton, VA
  • Average cloud cover in May: 43

The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 32).

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Average visibility in May
Dayton, VA

Average visibility in May - Dayton, VA
  • Average visibility in May: 5mi

The months with the highest visibility are February, April, June, July and November (6mi).
The months with the lowest visibility are January, March, May, August, September, October and December (5mi).

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Dayton, Virginia, USA

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