Onslow County (Jacksonville)
September
Weather in Onslow County, North Carolina for September 2025
Your guide to Onslow County weather in September - trends and predictions
In general, the average temperature in Onslow County at the beginning of September is 27.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 28.7 °F by the end of September.
Onslow County in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 290.6 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
13
Dry days
17
Rainy days
0
Snow days
27°/20°
Temperatures
15 km/h
Avg max wind
78 %
Avg humidity
Onslow County Weather September
Move between months or click on a day
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
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 32° /22° | 0.4 mm | 7 | |
| Sept. 2 |  Moderate or heavy rain shower | 28° /21° | 22.7 mm | 6 | |
| Sept. 3 |  Sunny | 28° /18° | 0 mm | 7 | |
| Sept. 4 | Patchy rain possible | 27° /20° | 0.5 mm | 6 | |
| Sept. 5 |  Overcast | 27° /19° | 0 mm | 6 | |
| Sept. 6 | Overcast | 28° /19° | 0 mm | 6 | |
| Sept. 7 | Moderate or heavy rain shower | 23° /20° | 15.4 mm | 5 | |
| Sept. 8 | Patchy rain possible | 22° /17° | 0.2 mm | 5 | |
| Sept. 9 |  Partly cloudy | 26° /17° | 0 mm | 7 | |
| Sept. 10 | Sunny | 28° /15° | 0 mm | 7 | |
| Sept. 11 | Overcast | 27° /16° | 0 mm | 6 | |
| Sept. 12 | Overcast | 27° /19° | 0 mm | 6 | |
| Sept. 13 | Moderate or heavy rain shower | 22° /21° | 60.8 mm | 5 | |
| Sept. 14 | Patchy rain possible | 26° /20° | 0.9 mm | 6 | |
| Sept. 15 | Moderate rain at times | 27° /20° | 0.6 mm | 6 | |
| Sept. 16 | Moderate or heavy rain shower | 24° /20° | 111.7 mm | 5 | |
| Sept. 17 | Patchy rain possible | 26° /21° | 15.9 mm | 6 | |
| Sept. 18 | Overcast | 29° /19° | 0 mm | 6 | |
| Sept. 19 | Moderate or heavy rain shower | 26° /21° | 9.5 mm | 6 | |
| Sept. 20 | Overcast | 30° /19° | 0 mm | 7 | |
| Sept. 21 |  Cloudy | 29° /18° | 0 mm | 6 | |
| Sept. 22 | Moderate rain at times | 27° /20° | 0.9 mm | 6 | |
| Sept. 23 | Partly cloudy | 27° /18° | 0 mm | 7 | |
| Sept. 24 | Patchy rain possible | 27° /20° | 0.6 mm | 6 | |
| Sept. 25 | Patchy rain possible | 30° /22° | 0.8 mm | 7 | |
| Sept. 26 | Patchy rain possible | 28° /24° | 1.2 mm | 6 | |
| Sept. 27 | Moderate or heavy rain shower | 27° /25° | 22.5 mm | 6 | |
| Sept. 28 | Sunny | 30° /23° | 1.2 mm | 8 | |
| Sept. 29 | Moderate or heavy rain shower | 28° /20° | 24.7 mm | 6 | |
| Sept. 30 |  Fog | 31° /22° | 0 mm | 7 | |
| Next | |||||
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.
Change Month
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 290.6 mm is expected in Onslow County during September, occurring over more than 17 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 💧
UV exposure in Onslow County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Onslow County
Select a location for an accurate weather forecast
More Locations Quick links
More Onslow County weather pages
You are here
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.
Found a mistake?
We appreciate your attention to details. Tell us here.