September weather forecast
Barrington, NH

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Weather in September

September brings a distinctive change in Barrington's weather, with temperatures drifting down slowly, indicating the approach of fall. The high plummets to 69.6°F (20.9°C) and the low drops to 52.9°F (11.6°C). On the brighter side, the humidity levels also recede mildly, making outdoor activities more enjoyable. As the sun starts setting a bit earlier, nights begin gaining dominance over the day.

Temperature

Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a warm 77.4°F (25.2°C) to an agreeable 69.6°F (20.9°C). Barrington, during the nights of September, experiences an average temperature drop to a cool 52.9°F (11.6°C).

Humidity

In Barrington, New Hampshire, the average relative humidity in September is 79%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.8 days and accumulates 1.5" (38mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day in Barrington is 12h and 29min.
On the first day of the month, sunrise is at 6:09 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:26 pm EDT.

Sunshine

The average sunshine in September in Barrington is 8.3h.

UV index

In Barrington, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During September, 4 as the daily maximum UV index converts into the following advice:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

What is the average September temperature?

September temperatures vary between a high-temperature of 69.6°F (20.9°C) and a low-temperature of 52.9°F (11.6°C).

What is the average humidity in September?

In Barrington, the average relative humidity in September is 79%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.5" (38mm) of precipitation.

How many days does it rain in September in Barrington?

In September, the rain falls for 11.8 days. Throughout September, 1.5" (38mm) of precipitation is accumulated.

When it does not snow?

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

Does it snow in September?

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

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:09 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:26 pm EDT.

How many hours of sunshine does Barrington have in September?

The average sunshine duration in September is 8.3h.

What is the UV index intensity in September?

In Barrington, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat 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
Barrington, NH

Average temperature in September - Barrington, NH
  • Average high temperature in September: 69.6°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 (29.7°F).

  • Average low temperature in September: 52.9°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

Average pressure in September
Barrington, NH

Average pressure in September - Barrington, 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).

Average wind speed in September
Barrington, NH

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

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in September
Barrington, NH

Average humidity in September - Barrington, NH
  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is April (75%).

Average rainfall in September
Barrington, NH

Average rainfall in September - Barrington, NH
  • Average rainfall in September: 1.5"

The wettest months (with the highest rainfall) are October and December (3.11").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days in September
Barrington, NH

Average rainfall days in September - Barrington, NH
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (6.8 days).

Average snowfall in September
Barrington, NH

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

The month with the highest snowfall is December (6.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Barrington, NH

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

The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Barrington, 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 0min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Barrington, NH

Average sunshine days in September - Barrington, NH
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is April (13.3 days).

Average UV index in September
Barrington, NH

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

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

Average cloud cover in September
Barrington, NH

Average cloud cover in September - Barrington, 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 32).

Average visibility in September
Barrington, NH

Average visibility in September - Barrington, NH
  • Average visibility in September: 5mi

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

Barrington, New Hampshire, USA

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