Cary (NC)
September
Weather in Cary, North Carolina for September 2026
Your guide to Cary weather in September - trends and predictions
So far, September 2026 in Cary shows a warmer trend than usual by 2.5 °F.
The forecast for the next days in Cary predicts a temperature of 25.8 °F, which is cooler than the historical average.
In general, the average temperature in Cary at the beginning of September is 31.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.3 °F by the end of September.
Cary in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 216.4 mm.
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Temperatures
Rain 🌧️
More
12
Dry days
18
Rainy days
0
Snow days
27°/19°
Temperatures
15 km/h
Avg max wind
71 %
Avg humidity
Cary Weather September
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Temperatures trend during September in Cary
See the weather trend as well as the moving average line
September weather in Cary day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 31° /19° | 3.9 mm | 8 | |
| Sept. 2 |  Partly cloudy | 30° /19° | 0.4 mm | 7 | |
| Sept. 3 | Sunny | 32° /18° | 0 mm | 8 | |
| Sept. 4 | Sunny | 33° /20° | 0.1 mm | 8 | |
| Sept. 5 | Sunny | 34° /20° | 0.1 mm | 8 | |
| Sept. 6 |  Thundery outbreaks possible | 31° /21° | 5.8 mm | 7 | |
| Sept. 7 | Thundery outbreaks possible | 30° /19° | 3.3 mm | 7 | |
| Sept. 8 | Thundery outbreaks possible | 30° /17° | 0.8 mm | 7 | |
| Sept. 9 |  Overcast | 28° /17° | 1.5 mm | 7 | |
| Sept. 10 | Sunny | 28° /18° | 2.8 mm | 7 | |
| Sept. 11 | Overcast | 30° /19° | 3.5 mm | 7 | |
| Sept. 12 | Overcast | 29° /19° | 0.9 mm | 6 | |
| Sept. 13 |  Mist | 29° /19° | 2.9 mm | 6 | |
| Sept. 14 | Partly cloudy | 30° /19° | 0.6 mm | 7 | |
| Sept. 15 | Sunny | 29° /18° | 0.6 mm | 6 | |
| Sept. 16 |  Moderate or heavy rain shower | 25° /16° | 36.3 mm | 6 | |
| Sept. 17 |  Light rain shower | 26° /17° | 29.7 mm | 6 | |
| Sept. 18 | Mist | 30° /19° | 7 mm | 6 | |
| Sept. 19 | Sunny | 29° /19° | 4.3 mm | 6 | |
| Sept. 20 | Partly cloudy | 30° /19° | 0 mm | 7 | |
| Sept. 21 |  Cloudy | 29° /19° | 1.5 mm | 7 | |
| Sept. 22 | Cloudy | 28° /19° | 4 mm | 5 | |
| Sept. 23 |  Heavy rain | 24° /17° | 19.8 mm | 4 | |
| Sept. 24 | Light rain shower | 25° /17° | 5.7 mm | 5 | |
| Sept. 25 | Patchy rain possible | 28° /18° | 4.4 mm | 6 | |
| Sept. 26 | Patchy rain possible | 26° /20° | 1.4 mm | 6 | |
| Sept. 27 | Sunny | 26° /13° | 0 mm | 6.7 | |
| Sept. 28 | Sunny | 27° /14° | 0 mm | 6.6 | |
| Sept. 29 | Sunny | 28° /16° | 0 mm | 6.5 | |
| Sept. 30 | Sunny | 31° /18° | 0 mm | 6.5 | |
| Next | |||||
Important Notice
Our weather forecast for Cary 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 Cary forecast closer to your planned date for the most up-to-date weather information.
Change Month
Cary in September - FAQ
What are the expected maximum and minimum temperatures in Cary during September?
During September, expect a variety of temperatures with highs around 27° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cary during September?
Significant rainfall exceeding 216.4 mm is expected in Cary during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cary during September?
The average wind speed in Cary during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Cary
Explore the daily rainfall trends and prepare for Carys September weather 💧
Typically, Cary has 18 rainy days in September with a total of 216.4 mm of rainfall.
UV exposure in Cary during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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