Orange County (Chapel Hill)
September
Weather in Orange County, North Carolina for September 2026
Your guide to Orange County weather in September - trends and predictions
So far, September 2026 in Orange County shows a warmer trend than usual by 3.2 °F.
The forecast for the next days in Orange County predicts temperatures to be around 24 °F, close to the historical average.
In general, the average temperature in Orange County at the beginning of September is 32.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.6 °F by the end of September.
Orange County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 262.6 mm.
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Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
0
Snow days
26°/18°
Temperatures
13 km/h
Avg max wind
71 %
Avg humidity
Orange County Weather September
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Temperatures trend during September in Orange County
See the weather trend as well as the moving average line
September weather in Orange County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 32° /19° | 0 mm | 9 | |
| Sept. 2 |  Overcast | 31° /19° | 0 mm | 8 | |
| Sept. 3 |  Sunny | 33° /19° | 0 mm | 8 | |
| Sept. 4 | Sunny | 35° /20° | 2.8 mm | 9 | |
| Sept. 5 | Sunny | 35° /21° | 0 mm | 9 | |
| Sept. 6 | Overcast | 31° /21° | 6.2 mm | 7 | |
| Sept. 7 |  Fog | 29° /18° | 21.8 mm | 8 | |
| Sept. 8 | Overcast | 29° /16° | 0 mm | 7 | |
| Sept. 9 | Overcast | 27° /15° | 0 mm | 7 | |
| Sept. 10 | Overcast | 28° /18° | 0 mm | 7 | |
| Sept. 11 | Overcast | 29° /19° | 0.2 mm | 7 | |
| Sept. 12 | Overcast | 28° /19° | 2.5 mm | 5 | |
| Sept. 13 | Partly cloudy | 30° /19° | 1.8 mm | 5 | |
| Sept. 14 | Sunny | 31° /19° | 0.3 mm | 8 | |
| Sept. 15 | Partly cloudy | 29° /18° | 0 mm | 5 | |
| Sept. 16 |  Moderate or heavy rain shower | 25° /15° | 44.4 mm | 7 | |
| Sept. 17 | Overcast | 27° /16° | 0 mm | 7 | |
| Sept. 18 | Partly cloudy | 31° /19° | 3.8 mm | 5 | |
| Sept. 19 | Mist | 31° /20° | 0.3 mm | 5 | |
| Sept. 20 | Overcast | 30° /20° | 0.1 mm | 7 | |
| Sept. 21 | Overcast | 26° /18° | 0 mm | 6 | |
| Sept. 22 |  Light rain shower | 28° /20° | 52.7 mm | 5.5 | |
| Sept. 23 | Overcast | 20° /15° | 36.3 mm | 1.4 | |
| Sept. 24 | Overcast | 16° /13° | 1.9 mm | 2.1 | |
| Sept. 25 | Sunny | 21° /10° | 0.1 mm | 6.5 | |
| Sept. 26 | Sunny | 23° /9° | 0 mm | 6 | |
| Sept. 27 | Sunny | 25° /11° | 0 mm | 7 | |
| Sept. 28 | Overcast | 26° /13° | 0 mm | 7 | |
| Sept. 29 | Sunny | 27° /15° | 0 mm | 7 | |
| Sept. 30 | Sunny | 27° /16° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Orange County 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 Orange County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Orange County in September - FAQ
What are the expected maximum and minimum temperatures in Orange County during September?
During September, expect a variety of temperatures with highs around 26° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Orange County during September?
Significant rainfall exceeding 262.6 mm is expected in Orange County during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Orange County during September?
The average wind speed in Orange County during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Orange County
Explore the daily rainfall trends and prepare for Orange Countys September weather 💧
Typically, Orange County has 7 rainy days in September with a total of 262.6 mm of rainfall.
UV exposure in Orange County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Orange County?Get accurate weather forecasts for Orange County, located at latitude 35.913 and longitude -79.056. Stay updated with localized weather information tailored for Orange County.
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