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United States weather

Weather in Lancaster, California for September 2025

Your guide to Lancaster weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Lancaster is slightly cooler than the historical average by -0.9 °F.

  • The forecast for the next days in Lancaster predicts a temperature of 28.5 °F, which is cooler than the historical average.

  • In general, the average temperature in Lancaster at the beginning of September is 34.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26 °F by the end of September.

    • Rain 🌧️

  • Precipitation in Lancaster during September is a rare event, with an average of fewer than 2 rainy days.

    • More

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Average dry days
30
Dry days
Average rainy days
0
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/15°
Temperatures
Average wind speed
29 km/h
Avg max wind
Average humidity
41 %
Avg humidity

Lancaster Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
36°
2
Sunny
34°
3
Overcast
30°
4
Sunny
34°
5
Sunny
36°
6
Sunny
35°
7
Sunny
36°
8
Sunny
35°
9
Sunny
35°
10
Overcast
30°
11
Partly cloudy
32°
12
Sunny
31°
13
Sunny
32°
14
Sunny
32°
15
Sunny
32°
16
Sunny
30°
17
Cloudy
38°
18
Heavy rain
24°
19
Cloudy
28°
20
Sunny
30°
21
Sunny
32°
22
Sunny
33°
23
Sunny
32°
24
Sunny
29°
25
Sunny
27°
26
Sunny
29°
27
Sunny
23°
28
Sunny
22°
29
Sunny
25°
30
Sunny
27°

Temperatures trend during September in Lancaster

See the weather trend as well as the moving average line

September weather in Lancaster day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
 36° /19° 0 mm 9
Sept. 2 Sunny
Sunny
 34° /19° 0 mm 8
Sept. 3 Overcast
Overcast
 30° /17° 0 mm 7
Sept. 4 Sunny
Sunny
 34° /18° 0 mm 8
Sept. 5 Sunny
Sunny
 36° /17° 0 mm 9
Sept. 6 Sunny
Sunny
 35° /17° 0 mm 8
Sept. 7 Sunny
Sunny
 36° /17° 0 mm 8
Sept. 8 Sunny
Sunny
 35° /17° 0 mm 9
Sept. 9 Sunny
Sunny
 35° /17° 0 mm 8
Sept. 10 Overcast
Overcast
 30° /18° 0 mm 7
Sept. 11 Partly cloudy
Partly cloudy
 32° /14° 0 mm 8
Sept. 12 Sunny
Sunny
 31° /13° 0 mm 7
Sept. 13 Sunny
Sunny
 32° /12° 0 mm 8
Sept. 14 Sunny
Sunny
 32° /14° 0 mm 8
Sept. 15 Sunny
Sunny
 32° /14° 0 mm 8
Sept. 16 Sunny
Sunny
 30° /14° 0 mm 8
Sept. 17 Cloudy
Cloudy
 38° /18° 0 mm 1.6
Sept. 18 Heavy rain
Heavy rain
 24° /17° 41.4 mm 0.8
Sept. 19 Cloudy
Cloudy
 28° /18° 0 mm 1.7
Sept. 20 Sunny
Sunny
 30° /16° 0 mm 1.9
Sept. 21 Sunny
Sunny
 32° /20° 0 mm 0
Sept. 22 Sunny
Sunny
 33° /20° 0 mm 7
Sept. 23 Sunny
Sunny
 32° /22° 0 mm 7
Sept. 24 Sunny
Sunny
 29° /19° 0 mm 6
Sept. 25 Sunny
Sunny
 27° /14° 0 mm 5
Sept. 26 Sunny
Sunny
 29° /16° 0 mm 6
Sept. 27 Sunny
Sunny
 23° /15° 0 mm 5
Sept. 28 Sunny
Sunny
 22° /12° 0 mm 5
Sept. 29 Sunny
Sunny
 25° /12° 0 mm 5
Sept. 30 Sunny
Sunny
 27° /15° 0 mm 6
Next
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.
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Lancaster in September - FAQ

What are the expected maximum and minimum temperatures in Lancaster during September?
Expect warm days with temperatures around 31°, cooling to mild conditions of 15° 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 29 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 ☀️

Quick links

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Location coordinates Where is Lancaster?

Get accurate weather forecasts for Lancaster, located at latitude 34.698 and longitude -118.137. Stay updated with localized weather information tailored for Lancaster.

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