June weather forecastDover, DE

The public Archives building in Dover, Delaware, between two large treesThe public Archives building in Dover, Delaware, between two large trees

June

Weather in June

June is often revered as the gateway to the hottest part of the year in Dover, with temperature highs spiking to 78.8°F (26°C). The cloud coverage, however, recedes significantly to 32%, allowing the sun to further heat the city. Consequently, the UV index peaks at 6, a high for the year. Despite the intensity of the summer sun, rainfall remains a prominent feature with an average of 15.7 rainfall days. With the longest daylight hours from 14.9, June certainly provides ample opportunities to enjoy the outdoors in the city.

Temperature

June's arrival in Dover brings a slight change in high-temperatures, adjusting from an agreeable 70.7°F (21.5°C) in May to a warm 78.8°F (26°C). Nighttime temperatures consistently average an enjoyable 64.9°F (18.3°C) during June.

Humidity

In June, the average relative humidity is 78%.

Rainfall

In June, the rain falls for 15.7 days. Throughout June, 2.64" (67mm) of precipitation is accumulated. In Dover, during the entire year, the rain falls for 152.3 days and collects up to 26.3" (668mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

June has the longest days of the year, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:37 am and sunset at 8:22 pm. On the last day of June, sunrise is at 5:39 am and sunset at 8:32 pm EDT.

Sunshine

The average sunshine in June is 10.3h.

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 exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during June, leads to the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

Frequently asked questions

The high-temperature, in June, in Dover, records 78.8°F (26°C), while the low-temperature is 64.9°F (18.3°C).

The average relative humidity in June in Dover is 78%.

In Dover, during June, the rain falls for 15.7 days and regularly aggregates up to 2.64" (67mm) of precipitation.

April through November are months without snowfall.

The month with the longest days is June, with an average of 14h and 54min of daylight.

In Dover, the average day length in June is 14h and 53min.

In June, on the first day of the month, sunrise is at 5:37 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:32 pm EDT.

In June, the average sunshine duration is 10.3h.

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

The average daily maximum UV index in June is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Dover, DE

  • Average high temperature in June: 78.8°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in June: 64.9°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in June
Dover, DE

  • Average pressure in June: 29.94"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 June
Dover, DE

  • Average wind speed in June: 7.6mph

The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in June
Dover, DE

  • Average humidity in June: 78%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in June
Dover, DE

  • Average rainfall in June: 2.64"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (1.46").

Average rainfall days in June
Dover, DE

  • Average rainfall days in June: 15.7 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.1 days).

Average snowfall in June
Dover, DE

  • Average snowfall in June: 0"

The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in June
Dover, DE

  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in June /
Average sunshine in June
Dover, DE

  • Average daylight in June: 14h and 54min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in June: 10h and 18min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in June
Dover, DE

  • Average sunshine days in June: 12.6 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in June
Dover, DE

  • Average UV index in June: 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 June
Dover, DE

  • Average cloud cover in June: 32

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in June
Dover, DE

  • Average visibility in June: 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).