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Weather in City and County of San Francisco for September 2024

Your guide to City and County of San Francisco weather in September - trends and predictions

  • Until now, September 2024 in City and County of San Francisco has been nearly identical to the historical average, with a temperature of 20 °F (showing only a slight deviation of -0.3 °F).

  • The forecast for the next days in City and County of San Francisco predicts temperatures to be around 19 °F, close to the historical average.

  • In general, the average temperature in City and County of San Francisco at the beginning of September is 21 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.6 °F by the end of September.

  • Precipitation in City and County of San Francisco during September is a rare event, with an average of fewer than 2 rainy days.

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Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/13°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
82 %
Avg humidity

City and County of San Francisco in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
19°
2
Mist
20°
3
Mist
23°
4
Mist
22°
5
Mist
22°
6
Mist
21°
7
Mist
20°
8
Fog
21°
9
Fog
20°
10
Fog
19°
11
Fog
21°
12
Mist
20°
13
Fog
21°
14
Fog
20°
15
Mist
18°
16
Mist
18°
17
Overcast
17°
18
Fog
15°
19
Fog
14°
20
Mist
13°
21
Sunny
20°
22
Sunny
22°
23
Sunny
24°
24
Sunny
22°
25
Sunny
20°
26
Sunny
18°
27
Sunny
19°
28
Sunny
19°
29
Sunny
19°
30
Sunny
20°
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Temperatures trend during September in City and County of San Francisco

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Overcast
Overcast
 19° /13° 0 mm 4
Sept. 2 Mist
Mist
 20° /14° 0 mm 5
Sept. 3 Mist
Mist
 23° /13° 0 mm 6
Sept. 4 Mist
Mist
 22° /14° 0 mm 6
Sept. 5 Mist
Mist
 22° /14° 0 mm 6
Sept. 6 Mist
Mist
 21° /13° 0 mm 6
Sept. 7 Mist
Mist
 20° /12° 0 mm 6
Sept. 8 Fog
Fog
 21° /12° 0 mm 6
Sept. 9 Fog
Fog
 20° /12° 0 mm 5
Sept. 10 Fog
Fog
 19° /12° 0 mm 5
Sept. 11 Fog
Fog
 21° /12° 0 mm 6
Sept. 12 Mist
Mist
 20° /13° 0 mm 5
Sept. 13 Fog
Fog
 21° /13° 0 mm 6
Sept. 14 Fog
Fog
 20° /13° 0 mm 5
Sept. 15 Mist
Mist
 18° /13° 0 mm 5
Sept. 16 Mist
Mist
 18° /13° 0.3 mm 4
Sept. 17 Overcast
Overcast
 17° /13° 0 mm 4
Sept. 18 Fog
Fog
 15° /13° 0 mm 4
Sept. 19 Fog
Fog
 14° /12° 0 mm 5
Sept. 20 Mist
Mist
 13° /12° 0 mm 6
Sept. 21 Sunny
Sunny
 20° /13° 0 mm 5
Sept. 22 Sunny
Sunny
 22° /15° 0 mm 5
Sept. 23 Sunny
Sunny
 24° /15° 0 mm 5
Sept. 24 Sunny
Sunny
 22° /16° 0 mm 5
Sept. 25 Sunny
Sunny
 20° /14° 0 mm 5
Sept. 26 Sunny
Sunny
 18° /13° 0 mm 5
Sept. 27 Sunny
Sunny
 19° /13° 0 mm 5
Sept. 28 Sunny
Sunny
 19° /13° 0 mm 4
Sept. 29 Sunny
Sunny
 19° /13° 0 mm 5
Sept. 30 Sunny
Sunny
 20° /13° 0 mm 5
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Important Notice
Our weather forecast for City and County of San Francisco 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 City and County of San Francisco forecast closer to your planned date for the most up-to-date weather information.

City and County of San Francisco in September - FAQ

What are the expected maximum and minimum temperatures in City and County of San Francisco during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in City and County of San Francisco during September?
Rainfall in City and County of San Francisco 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 City and County of San Francisco during September?
The average wind speed in City and County of San Francisco during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
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Location coordinates Where is City and County of San Francisco?

Get accurate weather forecasts for City and County of San Francisco, located at latitude 37.775 and longitude -122.419. Stay updated with localized weather information tailored for City and County of San Francisco.

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