May weather forecast
Selbyville, DE

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Weather in May

Selbyville greets May with rising temperatures and an increased — but not yet dominating — humidity. The weather is warmer, with bright, sunny days stretching to as long as 14.3 hours of daylight. A quick temperature rise and resultant shift in weather patterns lead to a disproportionally large amount of rainfall. May showers, while sudden and copious, bring forth a profusion of flora, transforming Selbyville into a green paradise. As May nears its conclusion, the climate is paving the way for the approaching summer months.

Temperature

Selbyville's transition into May brings a slight rise in the average high-temperature, moving from a refreshing 57.4°F (14.1°C) in April to an enjoyable 66.2°F (19°C). During the nights of May, Selbyville records an average temperature of 58.5°F (14.7°C), a minor drop from daytime peaks.

Humidity

May is the most humid month in Selbyville, with an average relative humidity of 82%.

Rainfall

In Selbyville, in May, during 13.9 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, in Selbyville, there are 144.6 rainfall days, and 25.51" (648mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In May, the average length of the day is 14h and 17min.
On the first day of the month, sunrise is at 6:02 am and sunset at 7:52 pm. On the last day of May, in Selbyville, sunrise is at 5:38 am and sunset at 8:18 pm EDT.

Sunshine

In Selbyville, the average sunshine in May is 9.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 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. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Selbyville?

In May, in Selbyville, the average high-temperature is 66.2°F (19°C), and the average low-temperature is 58.5°F (14.7°C).

What is the most humid month in Selbyville?

The most humid month is May, with an average relative humidity of 82%.

What is the average humidity in May in Selbyville?

In Selbyville, Delaware, the average relative humidity in May is 82%.

How much does it rain in Selbyville in May?

In Selbyville, Delaware, during May, the rain falls for 13.9 days and regularly aggregates up to 2.2" (56mm) of precipitation.

When it does not snow in Selbyville?

April through October are months without snowfall in Selbyville, Delaware.

How many hours of daylight does Selbyville have in May?

The average day length in May in Selbyville, Delaware, is 14h and 17min.

When is the sunrise / sunset in May in Selbyville?

In May, on the first day of the month, sunrise is at 6:02 am and sunset at 7:52 pm. On the last day of the month, in Selbyville, Delaware, sunrise is at 5:38 am and sunset at 8:18 pm EDT.

How long on average sun shines in May in Selbyville?

In May, the average sunshine duration in Selbyville, Delaware, is 9.2h.

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

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

How high is the UV index in May in Selbyville?

In Selbyville, Delaware, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
57.4°F 14.1°C
66.2°F 19°C
75°F 23.9°C
Average low temperature
48.7°F 9.3°C
58.5°F 14.7°C
67.8°F 19.9°C
Average pressure
30" 762mmHg
30.02" 763mmHg
29.94" 760mmHg
Average wind speed
12.5mph 20.1km/h
10.7mph 17.2km/h
9.8mph 15.8km/h
Average max. wind speed
13.4mph 21.6km/h
11.5mph 18.5km/h
10.4mph 16.7km/h
Average wind speed gusts
21.5mph 34.6km/h
18.5mph 29.8km/h
16.6mph 26.7km/h
Average humidity
77%
82%
80%
Average rainfall
1.73" 44mm
2.2" 56mm
2.24" 57mm
Average rainfall days
13.8
13.9
13.5
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0.2
0
0
Average daylight
13h 1min
14h 2min
14h 5min
Average sunshine
8h 5min
9h 1min
10h 2min
Average sunshine days
15
14.5
14.4
Average UV index
4
6
6
Average cloud cover
40%
39%
30%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in May
Selbyville, DE

Average temperature in May - Selbyville, DE
  • Average high temperature in May: 66.2°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (42.1°F).

  • Average low temperature in May: 58.5°F

The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).

Average pressure in May
Selbyville, DE

Average pressure in May - Selbyville, DE
  • Average pressure in May: 30.02"Hg

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

Average wind speed in May
Selbyville, DE

Average wind speed in May - Selbyville, DE
  • Average wind speed in May: 10.7mph

The windiest month (with the highest average wind speed) is January (12.8mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

Average humidity in May
Selbyville, DE

Average humidity in May - Selbyville, DE
  • Average humidity in May: 82%

The month with the highest relative humidity is May (82%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in May
Selbyville, DE

Average rainfall in May - Selbyville, DE
  • Average rainfall in May: 2.2"

The wettest months (with the highest rainfall) are July and August (2.87").
The driest month (with the least rainfall) is January (1.5").

Average rainfall days in May
Selbyville, DE

Average rainfall days in May - Selbyville, DE
  • Average rainfall days in May: 13.9 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in May
Selbyville, DE

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

The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Selbyville, DE

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

The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Selbyville, DE

Average daylight in May / Average sunshine in May - Selbyville, DE
  • 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days in May
Selbyville, DE

Average sunshine days in May - Selbyville, DE
  • Average sunshine days in May: 14.5 days

The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is July (12.9 days).

Average UV index in May
Selbyville, DE

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

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

Average cloud cover in May
Selbyville, DE

Average cloud cover in May - Selbyville, DE
  • Average cloud cover in May: 39

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in May
Selbyville, DE

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

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

Selbyville, Delaware, USA

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