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Weather in Rhode Island for September 2025

Your guide to Rhode Island weather in September - trends and predictions
  • In general, the average temperature in Rhode Island at the beginning of September is 27.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.7 °F by the end of September.

  • The climate of Rhode Island in September is notably wet, with an average of 11 rainy days.

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Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/14°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Rhode Island in September average weather

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Temperatures trend during September in Rhode Island

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
26° /14° 1.6 mm 7
Sept. 2 Overcast
Overcast
27° /14° 0 mm 7
Sept. 3 Partly cloudy
Partly cloudy
27° /13° 0 mm 7
Sept. 4 Overcast
Overcast
28° /14° 0 mm 7
Sept. 5 Mist
Mist
29° /15° 0 mm 7
Sept. 6 Overcast
Overcast
28° /16° 0.1 mm 6
Sept. 7 Thundery outbreaks possible
Thundery outbreaks possible
29° /17° 4.7 mm 7
Sept. 8 Fog
Fog
25° /15° 0.1 mm 7
Sept. 9 Fog
Fog
27° /16° 0.2 mm 7
Sept. 10 Fog
Fog
27° /16° 1.5 mm 7
Sept. 11 Light rain shower
Light rain shower
27° /14° 1.1 mm 7
Sept. 12 Fog
Fog
25° /15° 0.6 mm 6
Sept. 13 Moderate rain
Moderate rain
26° /16° 3.6 mm 6
Sept. 14 Mist
Mist
26° /15° 0 mm 6
Sept. 15 Overcast
Overcast
22° /13° 0 mm 5
Sept. 16 Patchy light drizzle
Patchy light drizzle
24° /13° 0.2 mm 6
Sept. 17 Partly cloudy
Partly cloudy
24° /12° 0 mm 6
Sept. 18 Moderate rain
Moderate rain
20° /15° 16.1 mm 5
Sept. 19 Sunny
Sunny
21° /15° 19.5 mm 5
Sept. 20 Partly cloudy
Partly cloudy
21° /13° 7.9 mm 5
Sept. 21 Sunny
Sunny
19° /12° 0.8 mm 5
Sept. 22 Mist
Mist
19° /12° 0 mm 5
Sept. 23 Heavy rain
Heavy rain
17° /13° 30.2 mm 4
Sept. 24 Mist
Mist
18° /13° 0 mm 4
Sept. 25 Heavy rain
Heavy rain
17° /12° 35.1 mm 4
Sept. 26 Patchy rain possible
Patchy rain possible
18° /11° 16.6 mm 4
Sept. 27 Fog
Fog
20° /11° 3.2 mm 5
Sept. 28 Fog
Fog
21° /11° 0 mm 5
Sept. 29 Fog
Fog
18° /11° 0 mm 5
Sept. 30 Light drizzle
Light drizzle
19° /11° 1.9 mm 5
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Important Notice
Our weather forecast for Rhode Island in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rhode Island forecast closer to your planned date for the most up-to-date weather information.

Rhode Island in September - FAQ

What are the expected maximum and minimum temperatures in Rhode Island during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Rhode Island during September?
Significant rainfall exceeding 181.7 mm is expected in Rhode Island during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Rhode Island during September?
The average wind speed in Rhode Island during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Rhode Island

Explore the daily rainfall trends and prepare for Rhode Islands September weather 💧

UV exposure in Rhode Island during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Rhode Island
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Location coordinates Where is Rhode Island?

Get accurate weather forecasts for Rhode Island, located at latitude 41.824 and longitude -71.413. Stay updated with localized weather information tailored for Rhode Island.

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