Onslow County (Jacksonville)
September
Weather in Onslow County, North Carolina for September 2026
Your guide to Onslow County weather in September - trends and predictions
So far, September 2026 in Onslow County shows a warmer trend than usual by 2.4 °F.
Expect cooler weather in the next days in Onslow County with the forecast suggesting a temperature of 27.9 °F, lower than the historical average.
In general, the average temperature in Onslow County at the beginning of September is 30.6 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 28.4 °F by the end of September.
The climate of Onslow County in September is notably wet, with an average of 12 rainy days, and a total of 276.4 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
12
Rainy days
0
Snow days
27°/20°
Temperatures
15 km/h
Avg max wind
78 %
Avg humidity
Onslow County Weather September
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Temperatures trend during September in Onslow County
See the weather trend as well as the moving average line
September weather in Onslow County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 31° /20° | 0.1 mm | 8 | |
| Sept. 2 |  Moderate or heavy rain shower | 30° /20° | 7.6 mm | 8 | |
| Sept. 3 |  Sunny | 31° /20° | 0 mm | 8 | |
| Sept. 4 | Sunny | 32° /21° | 0.2 mm | 8 | |
| Sept. 5 |  Overcast | 32° /21° | 19.2 mm | 7 | |
| Sept. 6 | Overcast | 30° /21° | 11.2 mm | 6 | |
| Sept. 7 | Moderate or heavy rain shower | 28° /20° | 31.2 mm | 7 | |
| Sept. 8 | Patchy rain possible | 26° /17° | 0.1 mm | 6 | |
| Sept. 9 | Overcast | 27° /18° | 0 mm | 7 | |
| Sept. 10 | Sunny | 28° /17° | 0.1 mm | 7 | |
| Sept. 11 | Overcast | 29° /19° | 0.3 mm | 7 | |
| Sept. 12 | Overcast | 28° /20° | 3.8 mm | 5 | |
| Sept. 13 | Moderate or heavy rain shower | 27° /20° | 20.8 mm | 5 | |
| Sept. 14 | Patchy rain possible | 30° /20° | 0.4 mm | 7 | |
| Sept. 15 | Moderate rain at times | 29° /19° | 0.2 mm | 6 | |
| Sept. 16 | Moderate or heavy rain shower | 24° /18° | 61.9 mm | 5 | |
| Sept. 17 | Patchy rain possible | 26° /18° | 5.3 mm | 6 | |
| Sept. 18 | Overcast | 31° /19° | 2.9 mm | 7 | |
| Sept. 19 | Moderate or heavy rain shower | 29° /21° | 4.4 mm | 6 | |
| Sept. 20 | Overcast | 30° /19° | 0 mm | 6 | |
| Sept. 21 |  Cloudy | 30° /19° | 0.7 mm | 6 | |
| Sept. 22 | Moderate rain at times | 28° /20° | 1.8 mm | 5 | |
| Sept. 23 |  Partly cloudy | 27° /19° | 1 mm | 5 | |
| Sept. 24 | Patchy rain possible | 26° /19° | 2.1 mm | 5 | |
| Sept. 25 | Patchy rain possible | 27° /19° | 1.5 mm | 5 | |
| Sept. 26 | Patchy rain possible | 29° /24° | 12.7 mm | 6 | |
| Sept. 27 | Sunny | 27° /13° | 0 mm | 6.9 | |
| Sept. 28 | Sunny | 28° /14° | 0 mm | 6.9 | |
| Sept. 29 | Sunny | 31° /16° | 0 mm | 6.8 | |
| Sept. 30 | Sunny | 31° /19° | 0 mm | 6.8 | |
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Important Notice
Our weather forecast for Onslow 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 Onslow County forecast closer to your planned date for the most up-to-date weather information.
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Onslow County in September - FAQ
What are the expected maximum and minimum temperatures in Onslow County during September?
During September, expect a variety of temperatures with highs around 27° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Onslow County during September?
Significant rainfall exceeding 276.4 mm is expected in Onslow County during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Onslow County during September?
The average wind speed in Onslow County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Onslow County
Explore the daily rainfall trends and prepare for Onslow Countys September weather 💧
Typically, Onslow County has 12 rainy days in September with a total of 276.4 mm of rainfall.
UV exposure in Onslow County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Onslow County?Get accurate weather forecasts for Onslow County, located at latitude 34.754 and longitude -77.43. Stay updated with localized weather information tailored for Onslow County.
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