May weather forecast
Millville, DE

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Weather in May

May witnesses the advent of summer heat in Millville, with temperature and relative humidity taking an upward turn. The thermometer scales stretch to highs of 66.2°F (19°C), announcing the arrival of the warm season. Frequent rain showers contribute to an increase in relative humidity to 82%, making the weather more balmy. Lengthening daylight hours and lesser snowfall invite people outdoors. The following month, June, witnesses further reliance on air conditioners as the mercury soars higher.

Temperature

As May arrives in Millville, a slight rise in the average high-temperature is observed, moving from a mild 57.4°F (14.1°C) in April to a comfortable 66.2°F (19°C). Throughout May in Millville, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 58.5°F (14.7°C).

Humidity

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

Rainfall

In Millville, Delaware, during May, the rain falls for 13.9 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, there are 144.6 rainfall days, and 25.51" (648mm) of precipitation is accumulated.

Snowfall

In Millville, Delaware, snow does not fall in April through October.

Daylight

In Millville, the average length of the day in May 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 Millville, sunrise is at 5:38 am and sunset at 8:18 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

What is the average May temperature in Millville?

Millville in May has an average high-temperature of 66.2°F (19°C) and an average low-temperature of 58.5°F (14.7°C).

What is the most humid month in Millville?

With an average relative humidity of 82%, May is the most humid month in Millville, Delaware.

What is the average humidity in May in Millville?

The average relative humidity in May in Millville, Delaware, is 82%.

How many days does it rain in May in Millville?

In Millville, Delaware, in May, during 13.9 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When it does not snow in Millville?

In Millville, Delaware, snow does not fall in April through October.

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

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

When are sunrise and sunset in May in Millville?

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

How many hours of sunshine does Millville have in May?

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

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

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

What is the UV index intensity in May in Millville?

In Millville, Delaware, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
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
Millville, DE

Average temperature in May - Millville, 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).

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Average pressure in May
Millville, DE

Average pressure in May - Millville, 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).

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Average wind speed in May
Millville, DE

Average wind speed in May - Millville, 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).

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Average humidity in May
Millville, DE

Average humidity in May - Millville, 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%).

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Average rainfall in May
Millville, DE

Average rainfall in May - Millville, 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").

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Average rainfall days in May
Millville, DE

Average rainfall days in May - Millville, 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).

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Average snowfall in May
Millville, DE

Average snowfall in May - Millville, 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").

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Average snowfall days in May
Millville, DE

Average snowfall days in May - Millville, 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).

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

Average daylight in May / Average sunshine in May - Millville, 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).

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Average sunshine days in May
Millville, DE

Average sunshine days in May - Millville, 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).

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Average UV index in May
Millville, DE

Average UV index in May - Millville, 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).

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Average cloud cover in May
Millville, DE

Average cloud cover in May - Millville, 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).

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Average visibility in May
Millville, DE

Average visibility in May - Millville, 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).

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Millville, Delaware, USA

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