September weather forecast
South Effingham, NH

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Weather in September

September, the first month of the autumn in South Effingham, is also an agreeable month, with an average temperature ranging between max 69.8°F (21°C) and min 50.2°F (10.1°C).

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a warm 77.2°F (25.1°C) in August to a pleasant 69.8°F (21°C). Nighttime temperatures in South Effingham consistently average a fresh 50.2°F (10.1°C) during September.

Humidity

In September, the average relative humidity is 80%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.9 days and typically collects 1.54" (39mm) of precipitation.

Snowfall

In South Effingham, snow does not fall in June through September.

Daylight

The average length of the day in September is 12h and 29min.
On the first day of the month, sunrise is at 6:08 am and sunset at 7:19 pm. On the last day of September, in South Effingham, sunrise is at 6:41 am and sunset at 6:26 pm EDT.

Sunshine

In September, the average sunshine is 8.2h.

UV index

The average daily maximum UV index in September in South Effingham is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, a regular UV index of 3 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

What is the usual temperature for South Effingham in September?

The high-temperature, in September, in South Effingham, is 69.8°F (21°C), while the low-temperature averages to 50.2°F (10.1°C).

What is the average humidity in September in South Effingham?

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

What is the driest month in South Effingham?

September is the month with the least rainfall in South Effingham. Rain falls for 10.9 days and accumulates 1.54" (39mm) of precipitation.

How much does it rain in South Effingham in September?

In September, the rain falls for 10.9 days. Throughout September, 1.54" (39mm) of precipitation is accumulated.

When it does not snow in South Effingham?

June through September are months without snowfall.

Does it snow in South Effingham in September?

In South Effingham, New Hampshire, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in South Effingham?

In South Effingham, New Hampshire, the average day length in September is 12h and 29min.

When is the sunrise / sunset in September in South Effingham?

In September, on the first day of the month, sunrise is at 6:08 am and sunset at 7:19 pm. On the last day of the month, in South Effingham, sunrise is at 6:41 am and sunset at 6:26 pm EDT.

How long on average sun shines in September in South Effingham?

In South Effingham, New Hampshire, the average sunshine duration in September is 8.2h.

What is the UV index reading in September in South Effingham?

In September, the average daily maximum UV index in South Effingham is 3. 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 September
South Effingham, NH

Average temperature in September - South Effingham, NH
  • Average high temperature in September: 69.8°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in September: 50.2°F

The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in September
South Effingham, NH

Average pressure in September - South Effingham, 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 (29.91"Hg).

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Average wind speed in September
South Effingham, NH

Average wind speed in September - South Effingham, NH
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in September
South Effingham, NH

Average humidity in September - South Effingham, NH
  • Average humidity in September: 80%

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April and November (77%).

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Average rainfall in September
South Effingham, NH

Average rainfall in September - South Effingham, NH
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is October (3.31").
The driest month (with the least rainfall) is September (1.54").

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Average rainfall days in September
South Effingham, NH

Average rainfall days in September - South Effingham, NH
  • Average rainfall days in September: 10.9 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is February (5.5 days).

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Average snowfall in September
South Effingham, NH

Average snowfall in September - South Effingham, NH
  • Average snowfall in September: 0"

The month with the highest snowfall is February (9.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
South Effingham, NH

Average snowfall days in September - South Effingham, NH
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (11.5 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
South Effingham, NH

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

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 September: 8h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in September
South Effingham, NH

Average sunshine days in September - South Effingham, NH
  • Average sunshine days in September: 17.2 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (13.2 days).

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Average UV index in September
South Effingham, NH

Average UV index in September - South Effingham, NH
  • Average UV index in September: 3

The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in September
South Effingham, NH

Average cloud cover in September - South Effingham, NH
  • Average cloud cover in September: 38

The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).

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Average visibility in September
South Effingham, NH

Average visibility in September - South Effingham, NH
  • Average visibility in September: 5mi

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

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South Effingham, New Hampshire, USA

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