September weather forecast
Bethel, RI

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Weather in September

Transitioning into autumn, Bethel’s weather in September brings a subtle chill, as the high summer temperatures start to decline. Judging by the atmospheric records, the rainfall decreases dropping to 1.73" (44mm) for 12.9 days. After the peak, the UV index begins to drop, offering a respite from the harsh summer sun. The decreased daylight hours, with corresponding less sunshine exposure, makes the city's natural landscape glow with magnificent fall colors.

Temperature

With the commencement of September, Bethel records a moderate temperature decline, with the average high easing from August's moderately hot 77.5°F (25.3°C) to an agreeable 71.2°F (21.8°C). Bethel encounters a steady low-temperature average of 60.4°F (15.8°C) throughout the month of September.

Humidity

In Bethel, the average relative humidity in September is 78%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.9 days and typically collects 1.73" (44mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 6:14 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:30 pm EDT.

Sunshine

In September, the average sunshine is 9h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: During September, 4 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

Frequently asked questions

What are the temperatures in September?

In September, in Bethel, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 60.4°F (15.8°C).

What is the average humidity in September?

In September, the average relative humidity is 78%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 1.73" (44mm) of precipitation.

How many days does it rain in September?

In Bethel, Rhode Island, in September, during 12.9 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Bethel have in September?

In Bethel, the average day length in September is 12h and 28min.

What time are sunrise and sunset in September in Bethel?

On the first day of September, sunrise is at 6:14 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:30 pm EDT.

How long on average sun shines in September?

In Bethel, the average sunshine duration in September is 9h.

What is the UV index intensity in September?

In Bethel, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Bethel, RI

Average temperature in September - Bethel, RI
  • Average high temperature in September: 71.2°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in September: 60.4°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in September
Bethel, RI

Average pressure in September - Bethel, RI
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Bethel, RI

Average wind speed in September - Bethel, RI
  • Average wind speed in September: 9.4mph

The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).

Average humidity in September
Bethel, RI

Average humidity in September - Bethel, RI
  • Average humidity in September: 78%

The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).

Average rainfall in September
Bethel, RI

Average rainfall in September - Bethel, RI
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in September
Bethel, RI

Average rainfall days in September - Bethel, RI
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in September
Bethel, RI

Average snowfall in September - Bethel, RI
  • Average snowfall in September: 0"

The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Bethel, RI

Average snowfall days in September - Bethel, RI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Bethel, RI

Average daylight in September / Average sunshine in September - Bethel, RI
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

Average sunshine days in September
Bethel, RI

Average sunshine days in September - Bethel, RI
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (11 days).

Average UV index in September
Bethel, RI

Average UV index in September - Bethel, RI
  • 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 and December (UV index 2).

Average cloud cover in September
Bethel, RI

Average cloud cover in September - Bethel, RI
  • Average cloud cover in September: 32

The months with the most cloud cover are March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in September
Bethel, RI

Average visibility in September - Bethel, RI
  • Average visibility in September: 6mi

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

Bethel, Rhode Island, USA

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