Northampton County (Easton)
September
Weather in Northampton County, Pennsylvania for September 2025
Your guide to Northampton County weather in September - trends and predictions
In general, the average temperature in Northampton County at the beginning of September is 24 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.4 °F by the end of September.
Northampton County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 76.4 mm.
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Temperatures
Rain 🌧️
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21
Dry days
9
Rainy days
0
Snow days
23°/13°
Temperatures
15 km/h
Avg max wind
76 %
Avg humidity
Northampton County Weather September
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Temperatures trend during September in Northampton County
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September weather in Northampton County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate rain at times | 28° /19° | 2.6 mm | 6 | |
| Sept. 2 |  Overcast | 23° /14° | 0 mm | 5 | |
| Sept. 3 |  Sunny | 23° /10° | 0 mm | 6 | |
| Sept. 4 | Sunny | 24° /9° | 0 mm | 6 | |
| Sept. 5 | Sunny | 25° /9° | 0 mm | 6 | |
| Sept. 6 | Overcast | 24° /11° | 0 mm | 5 | |
| Sept. 7 | Moderate or heavy rain shower | 21° /11° | 8.6 mm | 5 | |
| Sept. 8 | Sunny | 20° /7° | 0 mm | 6 | |
| Sept. 9 |  Partly cloudy | 24° /7° | 0 mm | 6 | |
| Sept. 10 | Sunny | 25° /12° | 0 mm | 7 | |
| Sept. 11 | Partly cloudy | 26° /11° | 0 mm | 7 | |
| Sept. 12 | Sunny | 26° /12° | 0 mm | 7 | |
| Sept. 13 | Sunny | 28° /12° | 0 mm | 7 | |
| Sept. 14 | Partly cloudy | 29° /14° | 0 mm | 7 | |
| Sept. 15 |  Patchy rain possible | 27° /14° | 0.1 mm | 6 | |
| Sept. 16 | Overcast | 24° /12° | 0 mm | 5 | |
| Sept. 17 | Overcast | 24° /14° | 0 mm | 5 | |
| Sept. 18 | Overcast | 23° /16° | 0 mm | 5 | |
| Sept. 19 | Overcast | 27° /16° | 0 mm | 6 | |
| Sept. 20 | Overcast | 24° /16° | 0 mm | 5 | |
| Sept. 21 | Patchy rain possible | 24° /16° | 0.3 mm | 5 | |
| Sept. 22 | Overcast | 22° /14° | 0 mm | 5 | |
| Sept. 23 | Moderate or heavy rain shower | 18° /12° | 8.3 mm | 4 | |
| Sept. 24 | Overcast | 20° /14° | 0 mm | 5 | |
| Sept. 25 | Moderate or heavy rain shower | 18° /16° | 16.2 mm | 4 | |
| Sept. 26 | Moderate or heavy rain shower | 24° /17° | 25.1 mm | 5 | |
| Sept. 27 | Moderate or heavy rain shower | 20° /16° | 5.1 mm | 5 | |
| Sept. 28 |  Heavy rain at times | 19° /16° | 7.6 mm | 4 | |
| Sept. 29 | Moderate rain at times | 17° /15° | 2.5 mm | 4 | |
| Sept. 30 |  Cloudy | 18° /14° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Northampton 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 Northampton County forecast closer to your planned date for the most up-to-date weather information.
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Northampton County in September - FAQ
What are the expected maximum and minimum temperatures in Northampton County during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Northampton County during September?
Moderate rainfall is anticipated in Northampton County during September, with a total of 76.4 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Northampton County during September?
The average wind speed in Northampton County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Northampton County
Explore the daily rainfall trends and prepare for Northampton Countys September weather 💧
UV exposure in Northampton County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Northampton County?Get accurate weather forecasts for Northampton County, located at latitude 40.688 and longitude -75.221. Stay updated with localized weather information tailored for Northampton County.
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