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Weather in Pomona for September 2025

Your guide to Pomona weather in September - trends and predictions
  • In general, the average temperature in Pomona at the beginning of September is 32.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 29.7 °F by the end of September.

  • With an average of 4 rainy days, Pomona experiences minimal rainfall in September.

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Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/16°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
57 %
Avg humidity

Pomona in September average weather

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Temperatures trend during September in Pomona

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 Patchy rain possible
Patchy rain possible
32° /19° 3.4 mm 8
Sept. 2 Overcast
Overcast
31° /19° 0.8 mm 7
Sept. 3 Moderate rain
Moderate rain
30° /18° 3.8 mm 8
Sept. 4 Cloudy
Cloudy
31° /19° 0 mm 8
Sept. 5 Cloudy
Cloudy
34° /21° 0 mm 8
Sept. 6 Partly cloudy
Partly cloudy
36° /22° 0 mm 9
Sept. 7 Sunny
Sunny
36° /22° 0 mm 9
Sept. 8 Partly cloudy
Partly cloudy
36° /23° 0 mm 8
Sept. 9 Sunny
Sunny
38° /24° 0 mm 9
Sept. 10 Overcast
Overcast
34° /22° 0 mm 8
Sept. 11 Partly cloudy
Partly cloudy
31° /21° 0 mm 8
Sept. 12 Sunny
Sunny
29° /18° 0 mm 8
Sept. 13 Sunny
Sunny
29° /17° 0 mm 8
Sept. 14 Partly cloudy
Partly cloudy
28° /17° 0 mm 7
Sept. 15 Partly cloudy
Partly cloudy
27° /16° 0 mm 7
Sept. 16 Partly cloudy
Partly cloudy
25° /15° 0.1 mm 6
Sept. 17 Cloudy
Cloudy
25° /13° 0 mm 6
Sept. 18 Cloudy
Cloudy
23° /13° 0 mm 6
Sept. 19 Cloudy
Cloudy
24° /13° 0 mm 6
Sept. 20 Partly cloudy
Partly cloudy
23° /12° 0 mm 6
Sept. 21 Patchy rain possible
Patchy rain possible
23° /12° 0.1 mm 6
Sept. 22 Overcast
Overcast
28° /14° 0 mm 7
Sept. 23 Partly cloudy
Partly cloudy
31° /17° 0 mm 8
Sept. 24 Partly cloudy
Partly cloudy
30° /16° 0 mm 8
Sept. 25 Partly cloudy
Partly cloudy
30° /16° 0 mm 8
Sept. 26 Overcast
Overcast
30° /17° 0 mm 7
Sept. 27 Partly cloudy
Partly cloudy
31° /18° 0 mm 8
Sept. 28 Sunny
Sunny
30° /17° 0 mm 8
Sept. 29 Partly cloudy
Partly cloudy
30° /16° 0 mm 8
Sept. 30 Light rain shower
Light rain shower
27° /16° 0.9 mm 7
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Important Notice
Our weather forecast for Pomona 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 Pomona forecast closer to your planned date for the most up-to-date weather information.

Pomona in September - FAQ

What are the expected maximum and minimum temperatures in Pomona during September?
During September, expect a variety of temperatures with highs around 28° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Pomona during September?
Expect minimal rainfall in Pomona during September, with a total of 18.1 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Pomona during September?
The average wind speed in Pomona during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Pomona

Explore the daily rainfall trends and prepare for Pomonas September weather 💧

UV exposure in Pomona during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Pomona?

Get accurate weather forecasts for Pomona, located at latitude 34.055 and longitude -117.752. Stay updated with localized weather information tailored for Pomona.

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