Lancaster
September
Weather in Lancaster for September 2025
Your guide to Lancaster weather in September - trends and predictions
In general, the average temperature in Lancaster at the beginning of September is 33.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 32 °F by the end of September.
Precipitation in Lancaster during September is a rare event, with an average of fewer than 2 rainy days.
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30
Dry days
0
Rainy days
0
Snow days
30°/13°
Temperatures
30 km/h
Avg max wind
47 %
Avg humidity
Lancaster in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  34° | 2  32° | 3  30° | 4 33° | 5 36° | 6 36° | 7 36° |
| 8 36° | 9 38° | 10 34° | 11 34° | 12 31° | 13 32° | 14 31° |
| 15 31° | 16 27° | 17 29° | 18 25° | 19  26° | 20 27° | 21  26° |
| 22 29° | 23 32° | 24 33° | 25 33° | 26 33° | 27 34° | 28 33° |
| 29 32° | 30  26° |
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Temperatures trend during September in Lancaster
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 | Sunny | 34° /19° | 0 mm | 9 | |
| Sept. 2 | Partly cloudy | 32° /18° | 0 mm | 8 | |
| Sept. 3 | Overcast | 30° /17° | 0 mm | 7 | |
| Sept. 4 | Sunny | 33° /17° | 0 mm | 8 | |
| Sept. 5 | Sunny | 36° /17° | 0 mm | 9 | |
| Sept. 6 | Sunny | 36° /18° | 0 mm | 9 | |
| Sept. 7 | Sunny | 36° /18° | 0 mm | 9 | |
| Sept. 8 | Partly cloudy | 36° /19° | 0 mm | 9 | |
| Sept. 9 | Sunny | 38° /20° | 0 mm | 9 | |
| Sept. 10 | Overcast | 34° /21° | 0 mm | 8 | |
| Sept. 11 | Partly cloudy | 34° /16° | 0 mm | 9 | |
| Sept. 12 | Sunny | 31° /14° | 0 mm | 8 | |
| Sept. 13 | Sunny | 32° /13° | 0 mm | 8 | |
| Sept. 14 | Sunny | 31° /14° | 0 mm | 8 | |
| Sept. 15 | Sunny | 31° /14° | 0 mm | 8 | |
| Sept. 16 | Sunny | 27° /14° | 0 mm | 7 | |
| Sept. 17 | Sunny | 29° /11° | 0 mm | 8 | |
| Sept. 18 | Sunny | 25° /9° | 0 mm | 6 | |
| Sept. 19 | Mist | 26° /10° | 0 mm | 6 | |
| Sept. 20 | Sunny | 27° /10° | 0 mm | 7 | |
| Sept. 21 | Cloudy | 26° /11° | 0 mm | 6 | |
| Sept. 22 | Overcast | 29° /9° | 0 mm | 7 | |
| Sept. 23 | Partly cloudy | 32° /14° | 0 mm | 8 | |
| Sept. 24 | Sunny | 33° /14° | 0 mm | 9 | |
| Sept. 25 | Sunny | 33° /14° | 0 mm | 9 | |
| Sept. 26 | Sunny | 33° /11° | 0 mm | 9 | |
| Sept. 27 | Sunny | 34° /13° | 0 mm | 9 | |
| Sept. 28 | Sunny | 33° /14° | 0 mm | 9 | |
| Sept. 29 | Sunny | 32° /13° | 0 mm | 8 | |
| Sept. 30 | Light rain shower | 26° /12° | 0.1 mm | 7 | |
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Important Notice
Our weather forecast for Lancaster 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 Lancaster forecast closer to your planned date for the most up-to-date weather information.
Lancaster in September - FAQ
What are the expected maximum and minimum temperatures in Lancaster during September?
Expect warm days with temperatures around 30°, cooling to mild conditions of 13° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Lancaster during September?
Rainfall in Lancaster during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Lancaster during September?
The average wind speed in Lancaster during September is 30 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Lancaster
Explore the daily rainfall trends and prepare for Lancasters September weather 💧
UV exposure in Lancaster during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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