June weather forecast
New Castle, NH

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Weather in June

As summer takes full swing in June, New Castle sees its temperatures reaching a comfortable 69.3°F (20.7°C). A remarkable increase in daylight and sunshine hours ensures pleasant, bright days. Rainy days might be at their peak in the year, but sea temperatures are warm enough for summer water activities. The wind speeds continue to lessen, providing a comforting breeze during the day.

Temperature

June signifies a subtle uplift in the average high-temperature, adjusting from a comfortable 61°F (16.1°C) in May to a pleasant 69.3°F (20.7°C). New Castle, during the nights of June, experiences an average temperature drop to a mild 55.4°F (13°C).

Humidity

With an average relative humidity of 80%, June is the most humid month in New Castle.

Rainfall

In New Castle, during June, the rain falls for 15 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 144.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.

Snowfall

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

Ocean temperature

In New Castle, in June, the average water temperature is 55.9°F (13.3°C).
Note: Beware of 55.9°F (13.3°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.

Daylight

The month with the longest days is June, with an average of 15h and 18min of daylight.
On the first day of the month, sunrise is at 5:05 am and sunset at 8:15 pm. On the last day of June, sunrise is at 5:07 am and sunset at 8:26 pm EDT.

Sunshine

The average sunshine in June is 9.2h.

UV index

In New Castle, the average daily maximum UV index in June is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 5 in June translates into this advice:
Be vigilant - Preventing sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average June temperature?

In June, in New Castle, the average high-temperature is 69.3°F (20.7°C), and the average low-temperature is 55.4°F (13°C).

What is the most humid month in New Castle?

The most humid month is June, with an average relative humidity of 80%.

What is the average humidity in June?

In June, the average relative humidity is 80%.

How much does it rain in June?

In New Castle, in June, during 15 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

When it does not snow?

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

What is the water temperature in June?

In New Castle, in June, the average water temperature is 55.9°F (13.3°C). Swimming in 55.9°F (13.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

When are the longest days?

The month with the longest days is June, with an average of 15h and 18min of daylight.

What is the average length of the day in June?

In New Castle, the average day length in June is 15h and 19min.

When are sunrise and sunset in June?

In June, on the first day of the month, sunrise is at 5:05 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:07 am and sunset at 8:26 pm EDT.

How long on average sun shines in June?

In June, the average sunshine duration is 9.2h.

What is the UV index reading in June in New Castle?

The average daily maximum UV index in June is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
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, NH

Average temperature in June - New Castle, NH
  • Average high temperature in June: 69.3°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in June: 55.4°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure in June
New Castle, NH

Average pressure in June - New Castle, NH
  • Average pressure in June: 29.92"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in June
New Castle, NH

Average wind speed in June - New Castle, NH
  • Average wind speed in June: 7.4mph

The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in June
New Castle, NH

Average humidity in June - New Castle, NH
  • Average humidity in June: 80%

The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are April and November (75%).

Average rainfall in June
New Castle, NH

Average rainfall in June - New Castle, NH
  • Average rainfall in June: 2.6"

The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in June
New Castle, NH

Average rainfall days in June - New Castle, NH
  • Average rainfall days in June: 15 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in June
New Castle, NH

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

The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in June
New Castle, NH

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

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in June
New Castle, NH

Average sea temperature in June - New Castle, NH
  • Average sea temperature in June: 55.9°F

The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).

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

Average daylight in June / Average sunshine in June - New Castle, NH
  • Average daylight in June: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in June: 9h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

Average sunshine days in June
New Castle, NH

Average sunshine days in June - New Castle, NH
  • Average sunshine days in June: 13.3 days

The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is April (13.2 days).

Average UV index in June
New Castle, NH

Average UV index in June - New Castle, NH
  • Average UV index in June: 5

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

Average cloud cover in June
New Castle, NH

Average cloud cover in June - New Castle, NH
  • Average cloud cover in June: 40

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in June
New Castle, NH

Average visibility in June - New Castle, NH
  • 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, New Hampshire, USA

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