San Francisco, CA

12:00 PM PDT on April 29, 2017 (GMT -0700)
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Weather History for KSFO - September, 1989

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Monday, September 4, 1989

  Actual Average Record
Temperature  
Mean Temperature 60 °F 65 °F  
Max Temperature 70 °F 74 °F 92 °F (1961)
Min Temperature 50 °F 56 °F 50 °F (1989)
Degree Days  
Heating Degree Days 5 2  
Month to date heating degree days 8  
Since 1 July heating degree days 121  
Cooling Degree Days 0 2  
Month to date cooling degree days 8  
Year to date cooling degree days 105  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 82    
Maximum Humidity 100    
Minimum Humidity 51    
Precipitation  
Precipitation 0.00 in 0.00 in 0.20 in (1876)
Month to date precipitation 0.01  
Year to date precipitation 13.13  
Sea Level Pressure  
Sea Level Pressure 29.94 in    
Wind  
Wind Speed 12 mph (NW)    
Max Wind Speed 26 mph    
Max Gust Speed -    
Visibility 9 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 04, 1989 Rise Set
Actual Time 6:42 AM PDT 7:33 PM PDT
Civil Twilight 6:15 AM PDT 8:00 PM PDT
Nautical Twilight 5:44 AM PDT 8:31 PM PDT
Astronomical Twilight 5:11 AM PDT 9:04 PM PDT
Moon 10:59 AM PDT (9/4) 9:24 PM PDT (9/4)
Length of Visible Light 13h 44m
Length of Day
12h 51m
Waxing Crescent, 18% of the Moon is Illuminated
Sep 4
Waxing Crescent
Sep 8
First Quarter
Sep 15
Full
Sep 21
Last Quarter
Sep 29
New

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:00 AM 54.0 °F 52.0 °F 93% 29.95 in 10.0 mi WNW 11.5 mph - N/A   Clear
1:00 AM 53.1 °F 52.0 °F 96% 29.96 in 10.0 mi NW 11.5 mph - N/A   Clear
2:00 AM 53.1 °F 51.1 °F 93% 29.95 in 10.0 mi WNW 11.5 mph - N/A   Clear
3:00 AM 52.0 °F 50.0 °F 93% 29.95 in 10.0 mi NW 13.8 mph - N/A   Clear
4:00 AM 51.1 °F 50.0 °F 96% 29.95 in 10.0 mi WNW 11.5 mph - N/A   Clear
5:00 AM 51.1 °F 50.0 °F 96% 29.94 in 10.0 mi NW 9.2 mph - N/A   Clear
6:00 AM 50.0 °F 50.0 °F 100% 29.95 in 10.0 mi NW 10.4 mph - N/A   Clear
7:00 AM 50.0 °F 50.0 °F 100% 29.95 in 8.0 mi WNW 9.2 mph - N/A   Clear
7:17 AM - - N/A% 29.96 in 8.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
8:00 AM 52.0 °F 51.1 °F 97% 29.97 in 5.0 mi WNW 8.1 mph - N/A Fog Fog
9:00 AM 57.0 °F 55.0 °F 93% 29.97 in 5.0 mi SW 4.6 mph - N/A Fog Fog
10:00 AM 59.0 °F 54.0 °F 83% 29.97 in 5.0 mi East 5.8 mph - N/A Fog Fog
10:17 AM - - N/A% 29.98 in 5.0 mi NE 6.9 mph - N/A Fog Fog
11:00 AM 62.1 °F 54.0 °F 75% 29.98 in 6.0 mi North 6.9 mph - N/A   Drizzle
12:00 PM 64.0 °F 55.0 °F 73% 29.97 in 7.0 mi NE 9.2 mph - N/A   Clear
1:00 PM 66.9 °F 54.0 °F 63% 29.95 in 10.0 mi NNE 9.2 mph - N/A   Clear
1:13 PM - - N/A% 29.95 in 10.0 mi NW 15.0 mph - N/A   Clear
2:00 PM 69.1 °F 52.0 °F 54% 29.94 in 10.0 mi NW 19.6 mph - N/A   Clear
3:00 PM 70.0 °F 51.1 °F 51% 29.92 in 15.0 mi NNW 17.3 mph - N/A   Clear
4:00 PM 70.0 °F 51.1 °F 51% 29.90 in 15.0 mi NW 21.9 mph - N/A   Clear
5:00 PM 64.9 °F 52.0 °F 63% 29.89 in 15.0 mi NW 26.5 mph - N/A   Clear
6:00 PM 63.0 °F 52.0 °F 67% 29.89 in 10.0 mi NW 23.0 mph - N/A   Clear
7:00 PM 59.0 °F 52.0 °F 78% 29.88 in 10.0 mi NW 20.7 mph - N/A   Clear
8:00 PM 55.9 °F 52.0 °F 87% 29.90 in 8.0 mi NW 17.3 mph - N/A   Clear
9:00 PM 55.0 °F 52.0 °F 89% 29.92 in 10.0 mi NW 16.1 mph - N/A   Clear
10:00 PM 55.0 °F 52.0 °F 89% 29.93 in 10.0 mi NW 11.5 mph - N/A   Clear
11:00 PM 54.0 °F 52.0 °F 93% 29.93 in 10.0 mi NW 12.7 mph - N/A   Clear