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Fremont (CA)
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Weather in Fremont, California for September 2025

Your guide to Fremont weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Fremont is cooler than usual, with temperatures averaging 23.3 °F, this is -3.1 °F below the typical seasonal average.

  • The forecast for the next days in Fremont predicts temperatures to be around 26 °F, close to the historical average.

  • In general, the average temperature in Fremont at the beginning of September is 27.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.7 °F by the end of September.

    • Rain 🌧️

  • Precipitation in Fremont 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
27°/13°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
62 %
Avg humidity

Fremont Weather September

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

Temperatures trend during September in Fremont

See the weather trend as well as the moving average line

September weather in Fremont day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Overcast
Overcast
 25° /13° 0 mm 6
Sept. 2 Cloudy
Cloudy
 26° /13° 0 mm 6
Sept. 3 Overcast
Overcast
 29° /13° 0 mm 6
Sept. 4 Mist
Mist
 29° /13° 0 mm 7
Sept. 5 Cloudy
Cloudy
 27° /14° 0 mm 6
Sept. 6 Partly cloudy
Partly cloudy
 28° /14° 0 mm 7
Sept. 7 Partly cloudy
Partly cloudy
 26° /14° 0 mm 6
Sept. 8 Partly cloudy
Partly cloudy
 26° /12° 0 mm 6
Sept. 9 Cloudy
Cloudy
 26° /13° 0 mm 6
Sept. 10 Mist
Mist
 25° /12° 0 mm 5
Sept. 11 Mist
Mist
 23° /12° 0 mm 5
Sept. 12 Overcast
Overcast
 26° /12° 0 mm 6
Sept. 13 Mist
Mist
 25° /12° 0 mm 6
Sept. 14 Cloudy
Cloudy
 28° /13° 0 mm 6
Sept. 15 Cloudy
Cloudy
 27° /13° 0 mm 6
Sept. 16 Mist
Mist
 22° /13° 0.8 mm 5
Sept. 17 Sunny
Sunny
 35° /16° 0 mm 1.7
Sept. 18 Moderate rain
Moderate rain
 24° /18° 8.5 mm 1.5
Sept. 19 Moderate rain
Moderate rain
 24° /19° 7.1 mm 1.6
Sept. 20 Sunny
Sunny
 28° /16° 0 mm 1.6
Sept. 21 Sunny
Sunny
 30° /16° 0 mm 0
Sept. 22 Sunny
Sunny
 33° /18° 0 mm 6
Sept. 23 Sunny
Sunny
 26° /17° 0 mm 6
Sept. 24 Partly cloudy
Partly cloudy
 26° /18° 0.1 mm 6
Sept. 25 Partly cloudy
Partly cloudy
 26° /17° 0 mm 6
Sept. 26 Sunny
Sunny
 22° /15° 0 mm 5
Sept. 27 Sunny
Sunny
 21° /14° 0 mm 5
Sept. 28 Sunny
Sunny
 23° /13° 0 mm 5
Sept. 29 Partly cloudy
Partly cloudy
 21° /13° 0 mm 5
Sept. 30 Light rain shower
Light rain shower
 27° /11° 0.8 mm 7
Next
Important Notice
Our weather forecast for Fremont 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 Fremont forecast closer to your planned date for the most up-to-date weather information.
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Fremont in September - FAQ

What are the expected maximum and minimum temperatures in Fremont during September?
Enjoy moderate daytime temperatures of up to 27° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Fremont during September?
Rainfall in Fremont 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 Fremont during September?
The average wind speed in Fremont during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Fremont

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

UV exposure in Fremont during September

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

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Location coordinates Where is Fremont?

Get accurate weather forecasts for Fremont, located at latitude 37.548 and longitude -121.989. Stay updated with localized weather information tailored for Fremont.

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