San Francisco, CA

4:20 AM PST on November 21, 2017 (GMT -0800)
San Francisco International

Weather History for KSFO - January, 1998

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Monday, January 5, 1998

  Actual Average Record
Temperature  
Mean Temperature 44 °F 50 °F  
Max Temperature 50 °F 56 °F 66 °F (2014)
Min Temperature 39 °F 44 °F 26 °F (1949)
Degree Days  
Heating Degree Days 20 15  
Month to date heating degree days 75  
Since 1 July heating degree days 1085  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 42 °F    
Average Humidity 89    
Maximum Humidity 100    
Minimum Humidity 74    
Precipitation  
Precipitation 0.00 in 0.14 in 1.98 in (1959)
Month to date precipitation 0.69  
Year to date precipitation 0.69  
Sea Level Pressure  
Sea Level Pressure 30.21 in    
Wind  
Wind Speed 3 mph (NW)    
Max Wind Speed 6 mph    
Max Gust Speed -    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Jan. 05, 1998 Rise Set
Actual Time 7:24 AM PST 5:05 PM PST
Civil Twilight 6:55 AM PST 5:34 PM PST
Nautical Twilight 6:23 AM PST 6:06 PM PST
Astronomical Twilight 5:51 AM PST 6:38 PM PST
Moon 12:08 PM PST (1/5) 12:02 AM PST (1/5)
Length of Visible Light 10h 38m
Length of Day
9h 40m
First Quarter, 53% of the Moon is Illuminated
Jan 5
First Quarter
Jan 12
Full
Jan 20
Last Quarter
Jan 27
New
Feb 3
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 44.1 °F 42.5 °F 42.1 °F 93% 30.10 in 10.0 mi South 3.5 mph - N/A   Clear
1:56 AM 43.0 °F 41.3 °F 42.1 °F 97% 30.12 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
2:56 AM 41.0 °F - 41.0 °F 100% 30.13 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:56 AM 39.9 °F 37.8 °F 39.9 °F 100% 30.14 in 10.0 mi WSW 3.5 mph - N/A   Scattered Clouds
4:56 AM 41.0 °F 39.0 °F 39.9 °F 96% 30.14 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
5:41 AM 46.4 °F 45.2 °F 44.6 °F 93% 30.16 in 8.0 mi NNW 3.5 mph - N/A   Mostly Cloudy
5:56 AM 46.0 °F - 43.0 °F 89% 30.17 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
6:43 AM 44.6 °F 43.1 °F 44.6 °F 100% 30.18 in 10.0 mi NW 3.5 mph - N/A   Mostly Cloudy
6:56 AM 45.0 °F 42.6 °F 44.1 °F 97% 30.19 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
7:11 AM 44.6 °F 42.2 °F 44.6 °F 100% 30.19 in 9.0 mi North 4.6 mph - N/A   Mostly Cloudy
7:56 AM 45.0 °F - 43.0 °F 93% 30.21 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 46.0 °F 44.8 °F 43.0 °F 89% 30.23 in 9.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
9:33 AM 46.4 °F - 42.8 °F 87% 30.24 in 8.0 mi Calm Calm - N/A   Scattered Clouds
9:56 AM 46.0 °F - 43.0 °F 89% 30.24 in 8.0 mi Calm Calm - N/A   Scattered Clouds
10:56 AM 46.9 °F - 45.0 °F 93% 30.25 in 8.0 mi NNE 4.6 mph - N/A   Scattered Clouds
11:56 AM 48.0 °F - 45.0 °F 89% 30.23 in 8.0 mi NE 3.5 mph - N/A   Partly Cloudy
12:56 PM 48.9 °F - 44.1 °F 83% 30.22 in 9.0 mi North 5.8 mph - N/A   Scattered Clouds
1:56 PM 50.0 °F - 43.0 °F 77% 30.22 in 10.0 mi NNE 3.5 mph - N/A   Scattered Clouds
2:56 PM 50.0 °F - 43.0 °F 77% 30.22 in 10.0 mi NNE 3.5 mph - N/A   Scattered Clouds
4:56 PM 50.0 °F - 43.0 °F 77% 30.23 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 PM 50.0 °F - 43.0 °F 77% 30.24 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 PM 46.9 °F - 39.0 °F 74% 30.26 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
7:56 PM 46.9 °F - 39.0 °F 74% 30.25 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:56 PM 46.0 °F 44.8 °F 39.9 °F 79% 30.26 in 10.0 mi SSE 3.5 mph - N/A   Partly Cloudy
9:56 PM 45.0 °F 43.5 °F 41.0 °F 86% 30.27 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
10:56 PM 42.1 °F 39.2 °F 39.0 °F 89% 30.27 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
11:56 PM 42.1 °F 40.2 °F 39.9 °F 92% 30.26 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy