September weather forecast
Pelham, NH

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Weather in September

September ushers in autumn with temperatures averages settling between highs of 72.3°F (22.4°C) and lows of 55.8°F (13.2°C), signifying a sharp fall from August. No snowfall marks this period, a continuation of the summer months' pattern. As summer transitions into autumn, daylight hours decrease to close to 12.5 hours, signaling shorter days. The abundant sunshine decreases to about 8.6 hours marking the gradual withdrawal of summer. Fortunately, the relative humidity remains consistently high, maintaining a comfortable atmosphere despite the decline in temperatures.

Temperature

September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's moderately hot 79.9°F (26.6°C) to a pleasant 72.3°F (22.4°C). The nighttime temperature, during September, averages of 55.8°F (13.2°C).

Humidity

In Pelham, the average relative humidity in September is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.6 days and typically collects 1.3" (33mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of the month, sunrise is at 6:10 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:27 pm EDT.

Sunshine

In Pelham, the average sunshine in September is 8.6h.

UV index

In Pelham, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 4 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the usual temperature for Pelham in September?

The high-temperature, in September, in Pelham, is 72.3°F (22.4°C), while the low-temperature averages to 55.8°F (13.2°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is evaluated at 86°F (30°C).

What is the average humidity in September in Pelham?

In September, the average relative humidity is 76%.

What is the driest month in Pelham?

September is the month with the least rainfall. Rain falls for 10.6 days and accumulates 1.3" (33mm) of precipitation.

How much does it rain in Pelham in September?

In Pelham, during September, the rain falls for 10.6 days and regularly aggregates up to 1.3" (33mm) of precipitation.

When it does not snow in Pelham?

June through September are months without snowfall in Pelham.

Does it snow in Pelham in September?

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

How many hours of daylight does Pelham have in September?

The average day length in September in Pelham is 12h and 29min.

When is the sunrise / sunset in September in Pelham?

In September, on the first day of the month, sunrise is at 6:10 am and sunset at 7:19 pm. On the last day of the month, in Pelham, New Hampshire, sunrise is at 6:42 am and sunset at 6:27 pm EDT.

How many hours of sunshine does Pelham have in September?

In Pelham, New Hampshire, the average sunshine duration in September is 8.6h.

How high is the UV index in September in Pelham?

In September, the average daily maximum UV index in Pelham is 4. A UV Index value of 3 to 5 symbolizes a medium 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 September
Pelham, NH

Average temperature in September - Pelham, NH
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.2°F).

  • Average low temperature in September: 55.8°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

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Average pressure in September
Pelham, NH

Average pressure in September - Pelham, NH
  • Average pressure in September: 30.05"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).

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Average wind speed in September
Pelham, NH

Average wind speed in September - Pelham, NH
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in September
Pelham, NH

Average humidity in September - Pelham, NH
  • Average humidity in September: 76%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in September
Pelham, NH

Average rainfall in September - Pelham, NH
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.3").

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Average rainfall days in September
Pelham, NH

Average rainfall days in September - Pelham, NH
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is May (15.9 days).
The months with the least rainy days are January and February (7.6 days).

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Average snowfall in September
Pelham, NH

Average snowfall in September - Pelham, NH
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Pelham, NH

Average snowfall days in September - Pelham, NH
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.5 days).
The 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
Pelham, NH

Average daylight in September / Average sunshine in September - Pelham, NH
  • Average daylight in September: 12h and 3min

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 September: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in September
Pelham, NH

Average sunshine days in September - Pelham, NH
  • Average sunshine days in September: 17.9 days

The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is May (13.5 days).

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Average UV index in September
Pelham, NH

Average UV index in September - Pelham, NH
  • Average UV index in September: 4

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

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Average cloud cover in September
Pelham, NH

Average cloud cover in September - Pelham, NH
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in September
Pelham, NH

Average visibility in September - Pelham, NH
  • Average visibility in September: 6mi

The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).

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Pelham, New Hampshire, USA

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