Weather in Richmond County, New York for September 2025
Rip Current Statement - See hour by hour.
Until now, September 2025 in Richmond County is cooler than usual, with temperatures averaging 24.5 °F, this is -2.1 °F below the typical seasonal average.
The forecast for the upcoming days in Richmond County predicts a temperature of 26.9 °F, which is slightly above the historical average.
In general, the average temperature in Richmond County at the beginning of September is 27.4 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 27 °F by the end of September.
Richmond County in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 156.7 mm.
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Richmond County Weather September
Temperatures trend during September in Richmond County
September weather in Richmond County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 26° /18° | 1.4 mm | 6 | |
| Sept. 2 |  Partly cloudy | 28° /17° | 0 mm | 7 | |
| Sept. 3 | Sunny | 26° /16° | 0 mm | 6 | |
| Sept. 4 | Partly cloudy | 28° /18° | 0 mm | 7 | |
| Sept. 5 | Partly cloudy | 29° /20° | 13.6 mm | 7 | |
| Sept. 6 | Partly cloudy | 30° /21° | 18.7 mm | 7 | |
| Sept. 7 |  Thundery outbreaks possible | 25° /18° | 29.5 mm | 6 | |
| Sept. 8 |  Patchy light rain with thunder | 26° /16° | 1.5 mm | 6 | |
| Sept. 9 | Partly cloudy | 26° /16° | 1.6 mm | 6 | |
| Sept. 10 |  Light rain shower | 24° /17° | 0.7 mm | 6 | |
| Sept. 11 | Light rain shower | 27° /17° | 2 mm | 6 | |
| Sept. 12 |  Overcast | 26° /18° | 0 mm | 6 | |
| Sept. 13 |  Moderate or heavy rain shower | 25° /17° | 5.8 mm | 6 | |
| Sept. 14 |  Cloudy | 26° /17° | 0 mm | 6 | |
| Sept. 15 | Overcast | 23° /17° | 2.6 mm | 6 | |
| Sept. 16 | Patchy rain possible | 23° /16° | 2.7 mm | 1.3 | |
| Sept. 17 | Patchy rain possible | 22° /15° | 3.8 mm | 0.9 | |
| Sept. 18 | Partly cloudy | 30° /18° | 0 mm | 1.3 | |
| Sept. 19 | Sunny | 28° /20° | 0 mm | 1.4 | |
| Sept. 20 | Sunny | 21° /14° | 0 mm | 0 | |
| Sept. 21 | Sunny | 22° /13° | 0 mm | 5 | |
| Sept. 22 | Sunny | 23° /14° | 0 mm | 5 | |
| Sept. 23 | Sunny | 28° /16° | 0 mm | 6 | |
| Sept. 24 | Patchy rain possible | 30° /19° | 0.7 mm | 5 | |
| Sept. 25 | Sunny | 27° /19° | 0 mm | 6 | |
| Sept. 26 | Sunny | 31° /18° | 0 mm | 6 | |
| Sept. 27 | Sunny | 33° /21° | 0 mm | 7 | |
| Sept. 28 | Sunny | 32° /22° | 0 mm | 7 | |
| Sept. 29 |  Moderate or heavy rain with thunder | 17° /15° | 25.9 mm | 4 | |
| Sept. 30 |  Light rain | 19° /15° | 9.3 mm | 4 | |
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Richmond County in September - FAQ
September rainfall patterns in Richmond County
UV exposure in Richmond County during September
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Where is Richmond County?Get accurate weather forecasts for Richmond County, located at latitude 40.562 and longitude -74.14. Stay updated with localized weather information tailored for Richmond County.