September weather forecast and climate
Atkinson, NH

Weather in September

The first month of the autumn, September, is also an agreeable month in Atkinson, New Hampshire, with average temperature ranging between min 55.6°F (13.1°C) and max 72.3°F (22.4°C).

Temperature

In Atkinson, the average high-temperature slightly decreases, from a warm 79.9°F (26.6°C) in August, to an agreeable 72.3°F (22.4°C). In September, the average low-temperature is 55.6°F (13.1°C).

Humidity

The average relative humidity in September is 76%.

Rainfall

The month with the least rainfall is September when the rain falls for 6 days and typically collects 0.2" (5mm) of precipitation.

Snowfall

In Atkinson snow does not fall in June through October.

Daylight

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

Sunshine

In Atkinson, the average sunshine in September is 8.5h.

UV index

In Atkinson, New Hampshire, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 temperature in September in Atkinson?

The average high-temperature, in September, is 72.3°F (22.4°C), while the average low-temperature is 55.6°F (13.1°C).

What is the average humidity in September in Atkinson?

In September, the average relative humidity in Atkinson, New Hampshire, is 76%.

How many days does it rain in September in Atkinson?

In September, in Atkinson, New Hampshire, the rain falls for 6 days. Throughout September, 0.2" (5mm) of precipitation is accumulated.

What is the driest month in Atkinson?

September is the month with the least rainfall in Atkinson, New Hampshire. Rain falls for 6 days and accumulates 0.2" (5mm) of precipitation.

When it does not snow in Atkinson?

June through October are months without snowfall in Atkinson, New Hampshire.

What is the average length of the day in September in Atkinson?

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

How long on average sun shines in September in Atkinson?

In Atkinson, the average sunshine in September is 8.5h.

What is the UV index intensity in September in Atkinson?

In September, the average daily maximum UV index in Atkinson, New Hampshire, is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Atkinson, NH

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

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in September: 55.6°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure in September
Atkinson, NH

Average pressure in September - Atkinson, NH
  • Average pressure in September: 30.05"

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

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Average wind speed in September
Atkinson, NH

Average wind speed in September - Atkinson, NH
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in September
Atkinson, NH

Average humidity in September - Atkinson, 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
Atkinson, NH

Average rainfall in September - Atkinson, NH
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.2").

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Average rainfall days in September
Atkinson, NH

Average rainfall days in September - Atkinson, NH
  • Average rainfall days in September: 6 days

The month with the highest number of rainy days is July (8.8 days).
The month with the least rainy days is January (3.6 days).

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Average snowfall in September
Atkinson, NH

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

The month with the highest snowfall is December (0.71").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Atkinson, NH

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

The month with the highest number of snowfall days is February (5.3 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Atkinson, NH

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

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is August (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in September
Atkinson, NH

Average sunshine days in September - Atkinson, NH
  • Average sunshine days in September: 21.9 days

The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (18.4 days).

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Average UV index in September
Atkinson, NH

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

Months with the highest UV index are June, July and August (UV index 6).
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
Atkinson, NH

Average cloud cover in September - Atkinson, 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
Atkinson, NH

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

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

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