September weather forecast
New London, NH

Weather in September

The first month of the autumn, September, is also an agreeable month in New London, New Hampshire, with average temperature varying between 68.9°F (20.5°C) and 49.1°F (9.5°C).

Temperature

In September, the average high-temperature slightly decreases, from a moderately hot 77°F (25°C) in August, to an agreeable 68.9°F (20.5°C). In September, the average low-temperature is 49.1°F (9.5°C).

Humidity

In New London, the average relative humidity is 80%.

Rainfall

In New London, New Hampshire,, it is raining for 11.8 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 146.9 rainfall days, and 30.35" (771mm) of precipitation is accumulated.

Snowfall

In New London snow does not fall in June through September.

Daylight

In September, the average length of the day in New London is 12.5h.

Sunshine

The average sunshine in New London, New Hampshire, is 8h.

UV index

The average daily maximum UV index in New London is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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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FAQ

What is the average humidity in September in New London?

In New London, New Hampshire, the average relative humidity in September is 80%.

How many days does it rain in September in New London?

In September, the rain falls for 11.8 days. Throughout September, 2.05" (52mm) of precipitation is accumulated.

When it does not snow in New London?

June through September are months without snowfall in New London, New Hampshire.

Does it snow in New London in September?

In New London, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in New London?

The average length of the day in September in New London is 12.5h.

How many hours of sunshine does New London have in September?

In September, the average sunshine in New London, New Hampshire, is 8h.

How high is the UV index in September in New London?

In New London, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in September
New London, NH

Average temperature in September - New London, NH
  • Average high temperature in September: 68.9°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (25.7°F).

  • Average low temperature in September: 49.1°F

The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in September
New London, NH

Average pressure in September - New London, NH
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.07").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in September
New London, NH

Average wind speed in September - New London, NH
  • Average wind speed in September: 5.2mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in September
New London, NH

Average humidity in September - New London, NH
  • Average humidity in September: 80%

Months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in September
New London, NH

Average rainfall in September - New London, NH
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is October (3.54").
The driest month (with the least rainfall) is August (1.93").

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Average rainfall days in September
New London, NH

Average rainfall days in September - New London, NH
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (6.2 days).

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Average snowfall in September
New London, NH

Average snowfall in September - New London, NH
  • Average snowfall in September: 0"

The month with the highest snowfall is February (9.65").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
New London, NH

Average snowfall days in September - New London, NH
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (13.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
New London, NH

Average daylight in September / Average sunshine in September - New London, NH
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 8h

The month with the most sunshine is August (Average sunshine: 9.9h).
The month with the least sunshine is February (Average sunshine: 3.7h).

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Average sunshine days in September
New London, NH

Average sunshine days in September - New London, NH
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is September (16.6 days).
Months with the least sunshine days are March and April (11.5 days).

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Average UV index in September
New London, NH

Average UV index in September - New London, NH
  • Average UV index in September: 3

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in September
New London, NH

Average cloud cover in September - New London, NH
  • Average cloud cover in September: 42

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 38).

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Average visibility in September
New London, NH

Average visibility in September - New London, NH
  • Average visibility in September: 4mi

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

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