Dauphin County (Harrisburg)
September
Weather in Dauphin County for September 2025
Your guide to Dauphin County weather in September - trends and predictions
In general, the average temperature in Dauphin County at the beginning of September is 23.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20 °F by the end of September.
Dauphin County experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 167.3 mm.
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Temperatures
Rain 🌧️
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20
Dry days
10
Rainy days
0
Snow days
23°/14°
Temperatures
14 km/h
Avg max wind
73 %
Avg humidity
Dauphin County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2  23° | 3  23° | 4  23° | 5 25° | 6  23° | 7  18° |
| 8 21° | 9 25° | 10 26° | 11 27° | 12 27° | 13 27° | 14 29° |
| 15 28° | 16  24° | 17 21° | 18 23° | 19 24° | 20 24° | 21  22° |
| 22  20° | 23 22° | 24 17° | 25 21° | 26 27° | 27 22° | 28 19° |
| 29  18° | 30  16° |
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Temperatures trend during September in Dauphin County
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Fog | 27° /19° | 0.2 mm | 6 | |
| Sept. 2 | Partly cloudy | 23° /13° | 0 mm | 6 | |
| Sept. 3 | Sunny | 23° /8° | 0 mm | 6 | |
| Sept. 4 | Cloudy | 23° /10° | 0 mm | 5 | |
| Sept. 5 | Sunny | 25° /10° | 0 mm | 7 | |
| Sept. 6 | Light rain shower | 23° /12° | 1.2 mm | 5 | |
| Sept. 7 | Patchy light rain | 18° /10° | 2.1 mm | 4 | |
| Sept. 8 | Sunny | 21° /6° | 0 mm | 6 | |
| Sept. 9 | Partly cloudy | 25° /8° | 0 mm | 7 | |
| Sept. 10 | Sunny | 26° /11° | 0 mm | 7 | |
| Sept. 11 | Sunny | 27° /12° | 0 mm | 7 | |
| Sept. 12 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 13 | Partly cloudy | 27° /13° | 0 mm | 7 | |
| Sept. 14 | Partly cloudy | 29° /14° | 0 mm | 7 | |
| Sept. 15 | Partly cloudy | 28° /13° | 0 mm | 7 | |
| Sept. 16 | Overcast | 24° /12° | 0.1 mm | 5 | |
| Sept. 17 | Overcast | 21° /17° | 0 mm | 5 | |
| Sept. 18 | Mist | 23° /17° | 0 mm | 5 | |
| Sept. 19 | Overcast | 24° /16° | 0 mm | 5 | |
| Sept. 20 | Partly cloudy | 24° /17° | 0 mm | 6 | |
| Sept. 21 | Moderate or heavy rain shower | 22° /16° | 22.3 mm | 5 | |
| Sept. 22 | Thundery outbreaks possible | 20° /17° | 8.5 mm | 5 | |
| Sept. 23 | Overcast | 22° /14° | 0 mm | 5 | |
| Sept. 24 | Fog | 17° /15° | 11.3 mm | 4 | |
| Sept. 25 | Moderate or heavy rain shower | 21° /17° | 19.6 mm | 5 | |
| Sept. 26 | Light rain shower | 27° /19° | 14.1 mm | 6 | |
| Sept. 27 | Fog | 22° /18° | 0 mm | 5 | |
| Sept. 28 | Moderate rain at times | 19° /17° | 11.1 mm | 4 | |
| Sept. 29 | Heavy rain at times | 18° /16° | 31.9 mm | 4 | |
| Sept. 30 | Moderate rain | 16° /14° | 44.9 mm | 4 | |
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Important Notice
Our weather forecast for Dauphin 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 Dauphin County forecast closer to your planned date for the most up-to-date weather information.
Dauphin County in September - FAQ
What are the expected maximum and minimum temperatures in Dauphin County during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Dauphin County during September?
Significant rainfall exceeding 167.3 mm is expected in Dauphin County during September, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Dauphin County during September?
The average wind speed in Dauphin County during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Dauphin County
Explore the daily rainfall trends and prepare for Dauphin Countys September weather 💧
UV exposure in Dauphin County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Dauphin County?Get accurate weather forecasts for Dauphin County, located at latitude 40.274 and longitude -76.884. Stay updated with localized weather information tailored for Dauphin County.
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