June weather forecast
New Castle, DE

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Weather in June

June marks the onset of the hottest months in New Castle. The city's weather conditions display a consistency in terms of elevated temperatures and prolonged daylight hours. There is a definitive increase in sea temperature which indicates the arrival of the beach season. June has the most sunshine hours, making it a preferred time for tourism. Rainfall sees a slight dip from May, offering residents drier days.

Temperature

The shift from May to June is marked by a slight increase in the average high-temperature, moving from a pleasant 72°F (22.2°C) to a moderately hot 80.1°F (26.7°C). The nights of June anticipate an average low-temperature of 63.1°F (17.3°C).

Humidity

In June, the average relative humidity is 76%.

Rainfall

In New Castle, in June, it is raining for 14.3 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, there are 143.2 rainfall days, and 21.89" (556mm) of precipitation is accumulated.

Snowfall

In New Castle, snow does not fall in May through October.

Ocean temperature

In New Castle, the average seawater temperature in June is 66.6°F (19.2°C).
Note: Swimming in 66.6°F (19.2°C) does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 69.8°F (21°C).

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 5:36 am and sunset at 8:24 pm. On the last day of June, sunrise is at 5:38 am and sunset at 8:34 pm EDT.

Sunshine

The average sunshine in June is 10.1h.

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 health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In June, a daily maximum UV index of 6 leads to the following instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

What are the temperatures in June?

In June, in New Castle, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 63.1°F (17.3°C).

What is the average humidity in June?

In New Castle, the average relative humidity in June is 76%.

How many days does it rain in June?

In New Castle, during June, the rain falls for 14.3 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When it does not snow?

In New Castle, snow does not fall in May through October.

What is the ocean temperature in June?

In June, the average ocean temperature is 66.6°F (19.2°C). For swimming, a surface water temperature of 66.6°F (19.2°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

When are the longest days?

With an average of 14h and 54min of daylight, June has the longest days of the year.

What is the average length of the day in June?

In New Castle, the average day length in June is 14h and 56min.

What time are sunrise and sunset in June?

In June, on the first day of the month, sunrise is at 5:36 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:34 pm EDT.

How long on average sun shines in June?

The average sunshine duration in June is 10.1h.

When is the highest UV index?

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

What is the UV index intensity in June?

The average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
New Castle, DE

Average temperature in June - New Castle, DE
  • Average high temperature in June: 80.1°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in June: 63.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in June
New Castle, DE

Average pressure in June - New Castle, DE
  • Average pressure in June: 29.94"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in June
New Castle, DE

Average wind speed in June - New Castle, DE
  • Average wind speed in June: 6.5mph

The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in June
New Castle, DE

Average humidity in June - New Castle, DE
  • Average humidity in June: 76%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in June
New Castle, DE

Average rainfall in June - New Castle, DE
  • Average rainfall in June: 2.01"

The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in June
New Castle, DE

Average rainfall days in June - New Castle, DE
  • Average rainfall days in June: 14.3 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in June
New Castle, DE

Average snowfall in June - New Castle, DE
  • Average snowfall in June: 0"

The month with the highest snowfall is January (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in June
New Castle, DE

Average snowfall days in June - New Castle, DE
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in June
New Castle, DE

Average sea temperature in June - New Castle, DE
  • Average sea temperature in June: 66.6°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).

Average daylight in June /
Average sunshine in June
New Castle, DE

Average daylight in June / Average sunshine in June - New Castle, DE
  • Average daylight in June: 14h and 5min

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 24min).

  • Average sunshine in June: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in June
New Castle, DE

Average sunshine days in June - New Castle, DE
  • Average sunshine days in June: 13 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in June
New Castle, DE

Average UV index in June - New Castle, 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, February, November and December (UV index 2).

Average cloud cover in June
New Castle, DE

Average cloud cover in June - New Castle, DE
  • Average cloud cover in June: 35

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in June
New Castle, DE

Average visibility in June - New Castle, 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).

New Castle, Delaware, USA

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