San Jose
September
Weather in San Jose for September 2024
Your guide to San Jose weather in September - trends and predictions
So far, September 2024 in San Jose is slightly warmer than the historical average by 0.6 °F.
Expect cooler weather in the next days in San Jose with the forecast suggesting a temperature of 27.5 °F, lower than the historical average.
In general, the average temperature in San Jose at the beginning of September is 29.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.7 °F by the end of September.
Precipitation in San Jose during September is a rare event, with an average of fewer than 2 rainy days.
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29
Dry days
1
Rainy days
0
Snow days
27°/13°
Temperatures
12 km/h
Avg max wind
65 %
Avg humidity
San Jose in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | ||||||
| 2  27° | 3 29° | 4  31° | 5 32° | 6  32° | 7  31° | 8 31° |
| 9 31° | 10 29° | 11 28° | 12 28° | 13 30° | 14 30° | 15 30° |
| 16  16° | 17 15° | 18 22° | 19 27° | 20 30° | 21 32° | 22 33° |
| 23 33° | 24 35° | 25 29° | 26 28° | 27 29° | 28 29° | 29 25° |
| 30 19° |
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Temperatures trend during September in San Jose
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 | Overcast | 25° /14° | 0 mm | 6 | |
| Sept. 2 | Cloudy | 27° /12° | 0 mm | 7 | |
| Sept. 3 | Overcast | 29° /13° | 0 mm | 7 | |
| Sept. 4 | Mist | 31° /15° | 0 mm | 7 | |
| Sept. 5 | Cloudy | 32° /14° | 0 mm | 8 | |
| Sept. 6 | Sunny | 32° /15° | 0 mm | 8 | |
| Sept. 7 | Partly cloudy | 31° /14° | 0 mm | 8 | |
| Sept. 8 | Partly cloudy | 31° /14° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 31° /13° | 0 mm | 8 | |
| Sept. 10 | Cloudy | 29° /12° | 0 mm | 7 | |
| Sept. 11 | Cloudy | 28° /12° | 0 mm | 7 | |
| Sept. 12 | Overcast | 28° /12° | 0 mm | 7 | |
| Sept. 13 | Mist | 30° /13° | 0 mm | 8 | |
| Sept. 14 | Cloudy | 30° /13° | 0 mm | 7 | |
| Sept. 15 | Cloudy | 30° /14° | 0 mm | 7 | |
| Sept. 16 | Patchy rain possible | 16° /13° | 3.9 mm | 3 | |
| Sept. 17 | Overcast | 15° /12° | 0 mm | 6 | |
| Sept. 18 | Mist | 22° /14° | 0 mm | 4 | |
| Sept. 19 | Sunny | 27° /13° | 0 mm | 6 | |
| Sept. 20 | Sunny | 30° /14° | 0 mm | 5 | |
| Sept. 21 | Sunny | 32° /15° | 0 mm | 6 | |
| Sept. 22 | Sunny | 33° /17° | 0 mm | 6 | |
| Sept. 23 | Sunny | 33° /17° | 0 mm | 6 | |
| Sept. 24 | Sunny | 35° /17° | 0 mm | 6 | |
| Sept. 25 | Sunny | 29° /14° | 0 mm | 5 | |
| Sept. 26 | Sunny | 28° /12° | 0 mm | 5 | |
| Sept. 27 | Sunny | 29° /12° | 0 mm | 5 | |
| Sept. 28 | Sunny | 29° /14° | 0 mm | 5 | |
| Sept. 29 | Overcast | 25° /12° | 0 mm | 6 | |
| Sept. 30 | Light rain shower | 19° /14° | 2.1 mm | 4 | |
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Important Notice
Our weather forecast for San Jose 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 San Jose forecast closer to your planned date for the most up-to-date weather information.
San Jose in September - FAQ
What are the expected maximum and minimum temperatures in San Jose 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 San Jose during September?
Rainfall in San Jose during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 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 San Jose during September?
The average wind speed in San Jose during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
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