September weather forecast
Foster, RI

Weather in September

The first month of the autumn, September, is also an agreeable month in Foster, Rhode Island, with an average temperature fluctuating between 55.4°F (13°C) and 72.3°F (22.4°C).

Temperature

In Foster, the average high-temperature in September marginally drops from a warm 79.7°F (26.5°C) in August to an agreeable 72.3°F (22.4°C). In September, the average low-temperature is 55.4°F (13°C).

Humidity

February, June, July, September and October, with an average relative humidity of 79%, are the most humid months in Foster.

Rainfall

The month with the least rainfall in Foster is September, when the rain falls for 13.6 days and typically collects 1.81" (46mm) of precipitation.

Snowfall

June through October are months without snowfall.

Daylight

The average length of the day in September in Foster is 12h and 28min.
On the first day of September in Foster, sunrise is at 6:13 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:30 pm EDT.

Sunshine

The average sunshine in September is 8.4h.

UV index

In Foster, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary 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 solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Foster?

In September, the average high-temperature is 72.3°F (22.4°C), and the average low-temperature is 55.4°F (13°C). in July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is evaluated at 86°F (30°C).

What are the most humid months in Foster?

The months with the highest humidity in Foster are February, June, July, September and October, with an average relative humidity of 79%.

What is the average humidity in September in Foster?

The average relative humidity in September in Foster, Rhode Island, is 79%.

What is the driest month in Foster?

The month with the least rainfall in Foster is September, when the rain falls for 13.6 days and typically collects 1.81" (46mm) of precipitation.

How many days does it rain in September in Foster?

In Foster, in September, during 13.6 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

When it does not snow in Foster?

In Foster, snow does not fall in June through October.

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

In September, the average day length in Foster, Rhode Island, is 12h and 28min.

When are sunrise and sunset in September in Foster?

In September, on the first day of the month, sunrise is at 6:13 am and sunset at 7:20 pm. On the last day of the month, in Foster, sunrise is at 6:43 am and sunset at 6:30 pm EDT.

How many hours of sunshine does Foster have in September?

In Foster, the average sunshine duration in September is 8.4h.

What is the UV index intensity in September in Foster?

In Foster, Rhode Island, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Foster, RI

Average temperature in September - Foster, RI
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in September: 55.4°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in September
Foster, RI

Average pressure in September - Foster, RI
  • Average pressure in September: 30.06"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).

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Average wind speed in September
Foster, RI

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

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average humidity in September
Foster, RI

Average humidity in September - Foster, RI
  • Average humidity in September: 79%

The months with the highest relative humidity are February, June, July, September and October (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in September
Foster, RI

Average rainfall in September - Foster, RI
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in September
Foster, RI

Average rainfall days in September - Foster, RI
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in September
Foster, RI

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

The month with the highest snowfall is March (3.7").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Foster, RI

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

The month with the highest number of snowfall days is January (7.8 days).
The 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
Foster, RI

Average daylight in September / Average sunshine in September - Foster, RI
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 10min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 8h and 24min

The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in September
Foster, RI

Average sunshine days in September - Foster, RI
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.6 days).

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Average UV index in September
Foster, RI

Average UV index in September - Foster, 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
Foster, RI

Average cloud cover in September - Foster, RI
  • Average cloud cover in September: 38

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in September
Foster, RI

Average visibility in September - Foster, 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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