San Francisco, CA

1:01 AM PDT on March 30, 2017 (GMT -0700)
San Francisco International

Weather History for KSFO - September, 1989

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Monday, September 25, 1989

  Actual Average Record
Temperature  
Mean Temperature 64 °F 64 °F  
Max Temperature 72 °F 73 °F 94 °F (2016)
Min Temperature 55 °F 55 °F 47 °F (1972)
Degree Days  
Heating Degree Days 2 2  
Month to date heating degree days 50  
Since 1 July heating degree days 163  
Cooling Degree Days 0 1  
Month to date cooling degree days 40  
Year to date cooling degree days 137  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 55 °F    
Average Humidity 80    
Maximum Humidity 93    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in 0.01 in 0.41 in (2014)
Month to date precipitation 0.12  
Year to date precipitation 13.24  
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 9 mph (WNW)    
Max Wind Speed 20 mph    
Max Gust Speed -    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 25, 1989 Rise Set
Actual Time 6:59 AM PDT 7:01 PM PDT
Civil Twilight 6:33 AM PDT 7:27 PM PDT
Nautical Twilight 6:03 AM PDT 7:58 PM PDT
Astronomical Twilight 5:32 AM PDT 8:28 PM PDT
Moon 2:53 AM PDT (9/25) 5:07 PM PDT (9/25)
Length of Visible Light 12h 53m
Length of Day
12h 01m
Waning Crescent, 15% of the Moon is Illuminated
Sep 25
Waning Crescent
Sep 29
New
Oct 7
First Quarter
Oct 14
Full
Oct 21
Last Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:00 AM 59.0 °F 55.9 °F 90% 29.97 in 10.0 mi NW 9.2 mph - N/A   Overcast
1:00 AM 57.9 °F 55.9 °F 93% 29.97 in 10.0 mi WNW 6.9 mph - N/A   Overcast
1:38 AM - - N/A% 29.97 in 10.0 mi NW 4.6 mph - N/A   Overcast
2:00 AM 59.0 °F 57.0 °F 93% 29.97 in 10.0 mi NW 5.8 mph - N/A   Overcast
2:32 AM - - N/A% 29.98 in 10.0 mi WSW 5.8 mph - N/A   Overcast
3:00 AM 59.0 °F 55.9 °F 90% 29.98 in 10.0 mi West 6.9 mph - N/A   Overcast
4:00 AM 59.0 °F 55.9 °F 90% 29.98 in 10.0 mi WNW 4.6 mph - N/A   Overcast
5:00 AM 57.9 °F 55.0 °F 90% 29.98 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds
6:00 AM 55.9 °F 54.0 °F 93% 29.99 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
7:00 AM 55.9 °F 54.0 °F 93% 29.99 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds
7:20 AM - - N/A% 30.00 in 10.0 mi WSW 4.6 mph - N/A   Mostly Cloudy
8:00 AM 57.9 °F 55.0 °F 90% 30.00 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:00 AM 62.1 °F 55.0 °F 78% 30.01 in 10.0 mi South 5.8 mph - N/A   Scattered Clouds
10:00 AM 64.9 °F 55.9 °F 73% 30.02 in 10.0 mi ENE 8.1 mph - N/A   Scattered Clouds
11:00 AM 66.0 °F 55.9 °F 70% 30.04 in 10.0 mi East 8.1 mph - N/A   Clear
12:00 PM 69.1 °F 55.9 °F 63% 30.03 in 10.0 mi NNW 11.5 mph - N/A   Clear
1:00 PM 72.0 °F 53.1 °F 51% 30.03 in 10.0 mi WNW 13.8 mph - N/A   Clear
2:00 PM 72.0 °F 51.1 °F 48% 30.02 in 10.0 mi WNW 12.7 mph - N/A   Clear
3:00 PM 72.0 °F 53.1 °F 51% 30.00 in 10.0 mi WNW 13.8 mph - N/A   Clear
4:00 PM 70.0 °F 55.9 °F 61% 30.00 in 10.0 mi WNW 16.1 mph - N/A   Clear
5:00 PM 66.0 °F 57.0 °F 73% 30.01 in 10.0 mi WNW 19.6 mph - N/A   Clear
6:00 PM 64.0 °F 57.0 °F 78% 30.00 in 10.0 mi WNW 18.4 mph - N/A   Scattered Clouds
6:12 PM - - N/A% 29.99 in 10.0 mi WNW 18.4 mph - N/A   Scattered Clouds
6:59 PM - - N/A% 30.00 in 10.0 mi WNW 17.3 mph - N/A   Mostly Cloudy
7:00 PM 61.0 °F 57.0 °F 87% 29.99 in 10.0 mi WNW 17.3 mph - N/A   Scattered Clouds
7:22 PM - - N/A% 30.00 in 10.0 mi WNW 16.1 mph - N/A   Mostly Cloudy
7:58 PM - - N/A% 29.99 in 10.0 mi West 13.8 mph - N/A   Scattered Clouds
8:00 PM 59.0 °F 57.0 °F 93% 29.99 in 10.0 mi WNW 15.0 mph - N/A   Mostly Cloudy
9:00 PM 59.0 °F 55.9 °F 90% 29.99 in 10.0 mi NNW 9.2 mph - N/A   Clear
10:00 PM 57.9 °F 55.9 °F 93% 29.99 in 10.0 mi NNW 10.4 mph - N/A   Clear
11:00 PM 57.9 °F 55.0 °F 90% 29.99 in 10.0 mi NW 10.4 mph - N/A   Scattered Clouds
11:36 PM - - N/A% 30.00 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy