September weather forecast
Manville, RI

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Weather in September

September, the first month of the autumn in Manville, is also an agreeable month, with an average temperature fluctuating between 55.2°F (12.9°C) and 73°F (22.8°C).

Temperature

The arrival of September is marked by a minor reduction in average high-temperature, sliding from a moderately hot 80.8°F (27.1°C) in August to an agreeable 73°F (22.8°C). An average low-temperature of 55.2°F (12.9°C) is observed during the September nights.

Humidity

In September, the average relative humidity is 78%.

Rainfall

September is the month with the least rainfall in Manville, Rhode Island. Rain falls for 11.6 days and accumulates 1.3" (33mm) of precipitation.

Snowfall

June through September are months without snowfall in Manville.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September in Manville, sunrise is at 6:12 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:28 pm EDT.

Sunshine

The average sunshine in September in Manville, Rhode Island, is 8h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 4 in September translates into this advice:
Put precautions into practice - Guidance to elude sunburn is provided. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What are the temperatures in Manville in September?

In September, in Manville, the average high-temperature is 73°F (22.8°C), and the average low-temperature is 55.2°F (12.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in September in Manville?

The average relative humidity in September in Manville, Rhode Island, is 78%.

What is the driest month in Manville?

September is the month with the least rainfall in Manville, Rhode Island. Rain falls for 11.6 days and accumulates 1.3" (33mm) of precipitation.

How many days does it rain in September in Manville?

In Manville, in September, during 11.6 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

When it does not snow in Manville?

In Manville, Rhode Island, snow does not fall in June through September.

Does it snow in Manville in September?

In Manville, Rhode Island, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Manville have in September?

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

When are sunrise and sunset in September in Manville?

In September, on the first day of the month, sunrise is at 6:12 am and sunset at 7:19 pm. On the last day of the month, in Manville, Rhode Island, sunrise is at 6:42 am and sunset at 6:28 pm EDT.

How many hours of sunshine does Manville have in September?

In Manville, Rhode Island, the average sunshine duration in September is 8h.

What is the UV index intensity in September in Manville?

The average daily maximum UV index in September in Manville, Rhode Island, is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from 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
Manville, RI

Average temperature in September - Manville, RI
  • Average high temperature in September: 73°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in September: 55.2°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

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Average pressure in September
Manville, RI

Average pressure in September - Manville, RI
  • Average pressure in September: 30.06"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Manville, RI

Average wind speed in September - Manville, RI
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is March (9.2mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in September
Manville, RI

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

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
Manville, RI

Average rainfall in September - Manville, RI
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is April (2.83").
The driest month (with the least rainfall) is September (1.3").

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Average rainfall days in September
Manville, RI

Average rainfall days in September - Manville, RI
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (7.9 days).

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Average snowfall in September
Manville, RI

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

The month with the highest snowfall is March (3.66").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Manville, RI

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

The month with the highest number of snowfall days is January (7.5 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
Manville, RI

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

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

  • Average sunshine in September: 8h and 0min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in September
Manville, RI

Average sunshine days in September - Manville, RI
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (12.5 days).

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Average UV index in September
Manville, RI

Average UV index in September - Manville, 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, November and December (UV index 2).

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Average cloud cover in September
Manville, RI

Average cloud cover in September - Manville, RI
  • Average cloud cover in September: 42

The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).

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Average visibility in September
Manville, RI

Average visibility in September - Manville, RI
  • 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).

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Manville, Rhode Island, USA

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