May weather forecast and climate
Smyrna, DE

The last month of the spring, May, is an agreeable month in Smyrna, Delaware, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 71.2°F (21.8°C).

Temperature

In Smyrna, the average high-temperature increases, from a comfortable 62.2°F (16.8°C) in April, to a pleasant 71.2°F (21.8°C). In Smyrna, in May, the average low-temperature is 55.9°F (13.3°C).

Humidity

May is the most humid month, with an average relative humidity of 79%.

Rainfall

In Smyrna, during May, the rain falls for 18.3 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, in Smyrna, there are 169.2 rainfall days, and 34.96" (888mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In May, the average length of the day in Smyrna is 14.4h.

Sunshine

In Smyrna, the average sunshine in May is 8.9h.

UV index

Months with the highest UV index in Smyrna are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in May in Smyrna?

In May, in Smyrna, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 55.9°F (13.3°C).

What is the most humid month in Smyrna?

The most humid month is May, with an average relative humidity of 79%.

What is the average humidity in May in Smyrna?

In May, the average relative humidity in Smyrna, Delaware, is 79%.

How much does it rain in Smyrna in May?

In May, in Smyrna, the rain falls for 18.3 days. Throughout May, 3.07" (78mm) of precipitation is accumulated.

Does it snow in Smyrna in May?

In May, it doesn't snow. April is the latest month when it typically snows.

When it does not snow in Smyrna?

In Smyrna snow does not fall in May through October.

How many hours of daylight does Smyrna have in May?

In Smyrna, Delaware, the average length of the day in May is 14.4h.

How many hours of sunshine does Smyrna have in May?

The average sunshine in May in Smyrna is 8.9h.

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

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

What is the UV index intensity in May in Smyrna?

In May, the average daily maximum UV index in Smyrna is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in May - Smyrna, DE
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in May: 55.9°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure in May - Smyrna, DE
  • Average pressure in May: 30.02"

The month with the highest atmospheric pressure is November (30.12").
The month with the lowest atmospheric pressure is June (29.94").

Average wind speed in May - Smyrna, DE
  • Average wind speed in May: 7.6mph

The windiest months (with the highest average wind speed) are February and March (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in May - Smyrna, DE
  • Average humidity in May: 79%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in May - Smyrna, DE
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days in May - Smyrna, DE
  • Average rainfall days in May: 18.3 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.3 days).

Average snowfall in May - Smyrna, DE
  • Average snowfall in May: 0"

The month with the highest snowfall is March (2.6").
Months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May - Smyrna, DE
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (4.5 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May / Average sunshine in May - Smyrna, DE
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in May: 8.9h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 5.1h).

Average sunshine days in May - Smyrna, DE
  • Average sunshine days in May: 10.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in May - Smyrna, DE
  • Average UV index in May: 6

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).

Average cloud cover in May - Smyrna, DE
  • Average cloud cover in May: 43

Months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in May - Smyrna, DE
  • Average visibility in May: 6mi

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