Rhode Island (Newport)
September
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 21.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.7 °F by the end of September.
Rhode Island experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 118.4 mm.
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Temperatures
Rain 🌧️
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22
Dry days
8
Rainy days
0
Snow days
20°/15°
Temperatures
19 km/h
Avg max wind
79 %
Avg humidity
Rhode Island Weather September
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What’s the Weather Like in Rhode Island This September?
Discover the average temperatures and weather trends across Rhode Island’s cities this September.
Temperatures trend during September in Rhode Island
See the weather trend as well as the moving average line
September weather in Rhode Island day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 22° /20° | 2.3 mm | 5 | |
| Sept. 2 |  Partly cloudy | 24° /16° | 0.2 mm | 6 | |
| Sept. 3 |  Sunny | 21° /11° | 0 mm | 6 | |
| Sept. 4 | Sunny | 21° /13° | 0 mm | 6 | |
| Sept. 5 | Sunny | 22° /14° | 0 mm | 6 | |
| Sept. 6 | Patchy rain possible | 23° /15° | 0.1 mm | 5 | |
| Sept. 7 |  Moderate rain | 20° /14° | 12.7 mm | 5 | |
| Sept. 8 | Sunny | 19° /11° | 0 mm | 5 | |
| Sept. 9 | Partly cloudy | 21° /12° | 0.1 mm | 6 | |
| Sept. 10 | Partly cloudy | 24° /15° | 0.3 mm | 6 | |
| Sept. 11 | Sunny | 22° /13° | 0 mm | 6 | |
| Sept. 12 | Sunny | 21° /14° | 0 mm | 6 | |
| Sept. 13 | Sunny | 23° /15° | 0 mm | 6 | |
| Sept. 14 | Partly cloudy | 24° /16° | 0 mm | 6 | |
| Sept. 15 | Partly cloudy | 22° /15° | 0 mm | 6 | |
| Sept. 16 | Partly cloudy | 21° /14° | 0 mm | 6 | |
| Sept. 17 |  Fog | 18° /15° | 0 mm | 4 | |
| Sept. 18 | Fog | 20° /17° | 0 mm | 5 | |
| Sept. 19 |  Moderate or heavy rain shower | 18° /17° | 65 mm | 4 | |
| Sept. 20 |  Overcast | 18° /17° | 10.4 mm | 4 | |
| Sept. 21 | Overcast | 16° /14° | 1.3 mm | 4 | |
| Sept. 22 | Overcast | 16° /15° | 7.4 mm | 4 | |
| Sept. 23 | Overcast | 17° /15° | 0 mm | 4 | |
| Sept. 24 |  Cloudy | 18° /14° | 0 mm | 4 | |
| Sept. 25 | Overcast | 16° /14° | 0 mm | 4 | |
| Sept. 26 | Overcast | 19° /15° | 9.8 mm | 4 | |
| Sept. 27 | Overcast | 19° /16° | 8.8 mm | 4 | |
| Sept. 28 | Overcast | 20° /14° | 0 mm | 5 | |
| Sept. 29 | Fog | 15° /13° | 0 mm | 4 | |
| Sept. 30 | Fog | 17° /12° | 0 mm | 4 | |
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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.
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Rhode Island in September - FAQ
What are the expected maximum and minimum temperatures in Rhode Island during September?
During September, expect a variety of temperatures with highs around 20° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Rhode Island during September?
Significant rainfall exceeding 118.4 mm is expected in Rhode Island during September, occurring over more than 8 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 19 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 ☀️
Counties in Rhode Island
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Top locations in Rhode Island
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Where is Rhode Island?Get accurate weather forecasts for Rhode Island, located at latitude 41.49 and longitude -71.313. Stay updated with localized weather information tailored for Rhode Island.
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