June weather forecast
Alton, NH

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Weather in June

June brings the onset of summer to Alton with warmer temperatures setting in. While this is a shift from the moderate climate of May, the weather remains pleasant for a majority of the daytime hours. Residents have ample daylight with 15.4 hours in a day, the highest for the year. Boosting the charm of Alton in June, the bright mornings and extended evenings provide more time to enjoy the outdoors. The combination of conditions in June offers an all-inclusive summer experience to both residents and visitors alike.

Temperature

June brings a slight elevation in the average high-temperature, transitioning from May's refreshing 63.9°F (17.7°C) to a pleasant 71.6°F (22°C). Alton's average low-temperature is measured at a cool 51.3°F (10.7°C) during June.

Humidity

The average relative humidity in June is 79%.

Rainfall

In Alton, during June, the rain falls for 15 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, there are 152 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

In Alton, New Hampshire, snow does not fall in June through September.

Daylight

June has the longest days of the year, with an average of 15h and 24min of daylight.
On the first day of the month, sunrise is at 5:06 am and sunset at 8:19 pm. On the last day of June, sunrise is at 5:07 am and sunset at 8:29 pm EDT.

Sunshine

In June, the average sunshine is 8.7h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 5 in June, converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are June temperatures?

The high-temperature, in June, in Alton, is 71.6°F (22°C), while the low-temperature averages to 51.3°F (10.7°C).

What is the average humidity in June?

The average relative humidity in June is 79%.

How much does it rain in June?

In Alton, in June, during 15 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow?

In Alton, snow does not fall in June through September.

Does it snow in June?

In June, it doesn't snow. May is the latest month when it typically snows.

When are the longest days?

The month with the longest days is June, with an average of 15h and 24min of daylight.

How many hours of daylight does Alton have in June?

The average day length in June is 15h and 22min.

When is the sunrise / sunset in June?

In June, on the first day of the month, sunrise is at 5:06 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:07 am and sunset at 8:29 pm EDT.

How many hours of sunshine does Alton have in June?

In Alton, the average sunshine duration in June is 8.7h.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index intensity in June?

In Alton, the average daily maximum UV index in June is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to 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
Alton, NH

Average temperature in June - Alton, NH
  • Average high temperature in June: 71.6°F

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in June: 51.3°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

Average pressure in June
Alton, NH

Average pressure in June - Alton, NH
  • Average pressure in June: 29.91"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in June
Alton, NH

Average wind speed in June - Alton, NH
  • Average wind speed in June: 5.2mph

The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in June
Alton, NH

Average humidity in June - Alton, NH
  • Average humidity in June: 79%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).

Average rainfall in June
Alton, NH

Average rainfall in June - Alton, NH
  • Average rainfall in June: 2.64"

The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in June
Alton, NH

Average rainfall days in June - Alton, NH
  • Average rainfall days in June: 15 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in June
Alton, NH

Average snowfall in June - Alton, NH
  • Average snowfall in June: 0"

The month with the highest snowfall is February (9.84").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in June
Alton, NH

Average snowfall days in June - Alton, NH
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in June /
Average sunshine in June
Alton, NH

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in June: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in June
Alton, NH

Average sunshine days in June - Alton, NH
  • Average sunshine days in June: 13.2 days

The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.4 days).

Average UV index in June
Alton, NH

Average UV index in June - Alton, NH
  • Average UV index in June: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in June
Alton, NH

Average cloud cover in June - Alton, NH
  • Average cloud cover in June: 45

The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in June
Alton, NH

Average visibility in June - Alton, NH
  • Average visibility in June: 5mi

The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).

Alton, New Hampshire, USA

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