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United States weather

Weather in Lancaster, California for September 2026

Your guide to Lancaster weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Lancaster is slightly cooler than the historical average by 0.7 °F.

  • The forecast for the upcoming days in Lancaster predicts a temperature of 28.7 °F, which is slightly above the historical average.

  • In general, the average temperature in Lancaster at the beginning of September is 33.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 28.4 °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

  • New! Chat with our AI weatherman - it’s amazing and free.

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
44 %
Avg humidity

Lancaster Weather September

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

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
 35° /18° 0 mm 9
Sept. 2 Sunny
Sunny
 33° /18° 0 mm 9
Sept. 3 Sunny
Sunny
 30° /17° 0 mm 8
Sept. 4 Sunny
Sunny
 33° /17° 0 mm 9
Sept. 5 Sunny
Sunny
 35° /17° 0 mm 9
Sept. 6 Sunny
Sunny
 33° /17° 1.2 mm 8
Sept. 7 Sunny
Sunny
 35° /16° 0 mm 9
Sept. 8 Sunny
Sunny
 36° /17° 0 mm 9
Sept. 9 Sunny
Sunny
 35° /17° 0 mm 9
Sept. 10 Sunny
Sunny
 33° /19° 0 mm 8
Sept. 11 Partly cloudy
Partly cloudy
 33° /17° 0 mm 8
Sept. 12 Sunny
Sunny
 32° /14° 0 mm 8
Sept. 13 Sunny
Sunny
 31° /14° 0 mm 8
Sept. 14 Sunny
Sunny
 32° /14° 0 mm 8
Sept. 15 Sunny
Sunny
 31° /14° 0 mm 8
Sept. 16 Sunny
Sunny
 29° /14° 0 mm 8
Sept. 17 Sunny
Sunny
 29° /13° 0 mm 8
Sept. 18 Sunny
Sunny
 28° /13° 0 mm 7
Sept. 19 Sunny
Sunny
 27° /12° 0 mm 7
Sept. 20 Sunny
Sunny
 29° /13° 0 mm 6
Sept. 21 Sunny
Sunny
 23° /12° 0 mm 7.6
Sept. 22 Sunny
Sunny
 28° /17° 0 mm 7.7
Sept. 23 Sunny
Sunny
 31° /20° 0 mm 7.6
Sept. 24 Sunny
Sunny
 30° /23° 0 mm 7.5
Sept. 25 Sunny
Sunny
 29° /22° 0 mm 7.6
Sept. 26 Overcast
Overcast
 29° /24° 0 mm 7
Sept. 27 Sunny
Sunny
 26° /22° 0 mm 7
Sept. 28 Sunny
Sunny
 26° /15° 0 mm 7
Sept. 29 Sunny
Sunny
 30° /20° 0 mm 7
Sept. 30 Sunny
Sunny
 29° /21° 0 mm 7
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.
Change Month
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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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