San Francisco, CA

7:20 AM PDT on June 23, 2018 (GMT -0700)
San Francisco International

Weather History for KSFO - January, 2017

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Sunday, January 22, 2017

  Actual Average Record
Temperature  
Mean Temperature 52 °F 51 °F  
Max Temperature 57 °F 57 °F 71 °F (1968)
Min Temperature 47 °F 45 °F 32 °F (1962)
Degree Days  
Heating Degree Days 13 14  
Month to date heating degree days 320 329  
Since 1 July heating degree days 1171 1339  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 44 °F    
Average Humidity 69    
Maximum Humidity 83    
Minimum Humidity 55    
Precipitation  
Precipitation 0.68 in 0.12 in 1.55 in (1983)
Month to date precipitation 9.01 3.00  
Year to date precipitation 9.01 3.00  
Sea Level Pressure  
Sea Level Pressure 29.69 in    
Wind  
Wind Speed 12 mph (SSW)    
Max Wind Speed 33 mph    
Max Gust Speed 45 mph    
Visibility 7 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Jan. 22, 2017 Rise Set
Actual Time 7:19 AM PST 5:22 PM PST
Civil Twilight 6:51 AM PST 5:50 PM PST
Nautical Twilight 6:19 AM PST 6:22 PM PST
Astronomical Twilight 5:48 AM PST 6:53 PM PST
Moon 2:45 AM PST (1/22) 1:25 PM PST (1/22)
Length of Visible Light 10h 59m
Length of Day
10h 02m
Waning Crescent, 24% of the Moon is Illuminated
Jan 22
Waning Crescent
Jan 27
New
Feb 3
First Quarter
Feb 10
Full
Feb 18
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 51.1 °F 44.1 °F 77% 29.67 in 7.0 mi SE 29.9 mph - 0.02 in Rain Light Rain
1:56 AM 50.0 °F 45.0 °F 83% 29.64 in 10.0 mi ESE 20.7 mph - 0.00 in   Overcast
2:51 AM 51.8 °F 44.6 °F 76% 29.63 in 8.0 mi SE 20.7 mph 28.8 mph 0.00 in Rain Light Rain
2:56 AM 51.1 °F 46.0 °F 83% 29.64 in 8.0 mi SE 17.3 mph 28.8 mph 0.00 in Rain Light Rain
3:06 AM 51.1 °F 46.0 °F 83% 29.63 in 10.0 mi SSE 20.7 mph 31.1 mph 0.01 in Rain Light Rain
3:56 AM 53.1 °F 46.9 °F 80% 29.62 in 4.0 mi SSE 21.9 mph - 0.02 in Rain Rain
4:11 AM 53.1 °F 48.0 °F 83% 29.63 in 4.0 mi South 20.7 mph 28.8 mph 0.03 in Rain Rain
4:26 AM 54.0 °F 48.0 °F 80% 29.62 in 4.0 mi South 18.4 mph 33.4 mph 0.06 in Rain Rain
4:56 AM 54.0 °F 48.9 °F 83% 29.65 in 3.0 mi South 24.2 mph 44.9 mph 0.13 in Rain Heavy Rain
5:04 AM 54.0 °F 48.9 °F 83% 29.66 in 2.5 mi West 17.3 mph 34.5 mph 0.05 in Rain Rain
5:07 AM 53.1 °F 48.0 °F 83% 29.66 in 3.0 mi West 17.3 mph - 0.07 in Rain Rain
5:56 AM 52.0 °F 48.0 °F 86% 29.69 in 10.0 mi SSW 11.5 mph - 0.08 in   Overcast
6:56 AM 53.1 °F 46.0 °F 77% 29.73 in 10.0 mi WSW 10.4 mph - N/A   Overcast
7:56 AM 52.0 °F 46.0 °F 80% 29.75 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds
8:56 AM 54.0 °F 45.0 °F 72% 29.77 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
9:56 AM 55.0 °F 46.9 °F 74% 29.79 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
10:56 AM 57.0 °F 46.0 °F 67% 29.78 in 10.0 mi SSE 9.2 mph - N/A   Mostly Cloudy
11:56 AM 57.0 °F 42.1 °F 57% 29.75 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
12:56 PM 57.0 °F 41.0 °F 55% 29.71 in 10.0 mi South 9.2 mph - N/A   Overcast
1:43 PM 54.0 °F 39.9 °F 59% 29.69 in 10.0 mi SSW 9.2 mph - 0.01 in Rain , Thunderstorm Light Rain
1:56 PM 53.1 °F 42.1 °F 66% 29.68 in 7.0 mi SSW 12.7 mph 17.3 mph 0.02 in Rain Light Rain
2:45 PM 52.0 °F 43.0 °F 71% 29.67 in 6.0 mi WSW 13.8 mph 19.6 mph 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
2:56 PM 50.0 °F 43.0 °F 77% 29.67 in 4.0 mi WSW 11.5 mph - 0.05 in Rain , Thunderstorm Heavy Thunderstorms and Rain
3:02 PM 48.9 °F 43.0 °F 80% 29.67 in 2.0 mi SW 12.7 mph 21.9 mph 0.03 in Rain , Thunderstorm Heavy Thunderstorms and Rain
3:06 PM 48.9 °F 43.0 °F 80% 29.67 in 2.0 mi South 17.3 mph 28.8 mph 0.08 in Rain Heavy Rain
3:31 PM 48.9 °F 43.0 °F 80% 29.68 in 2.5 mi WSW 23.0 mph 26.5 mph 0.22 in Rain Heavy Rain
3:41 PM 48.9 °F 43.0 °F 80% 29.68 in 5.0 mi West 17.3 mph - 0.24 in Rain Rain
3:56 PM 48.9 °F 43.0 °F 80% 29.68 in 6.0 mi West 13.8 mph 21.9 mph 0.25 in Rain Light Rain
4:56 PM 48.9 °F 43.0 °F 80% 29.68 in 9.0 mi West 8.1 mph - 0.06 in   Mostly Cloudy
5:56 PM 50.0 °F 42.1 °F 74% 29.68 in 10.0 mi East 4.6 mph - N/A   Mostly Cloudy
6:56 PM 48.9 °F 43.0 °F 80% 29.69 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
7:56 PM 50.0 °F 43.0 °F 77% 29.69 in 10.0 mi SSE 9.2 mph - 0.00 in Rain Light Rain
8:56 PM 50.0 °F 43.0 °F 77% 29.70 in 10.0 mi SSW 4.6 mph - 0.00 in   Mostly Cloudy
9:56 PM 48.9 °F 42.1 °F 77% 29.70 in 10.0 mi South 6.9 mph - 0.02 in   Mostly Cloudy
10:56 PM 48.9 °F 41.0 °F 74% 29.72 in 7.0 mi SW 12.7 mph 26.5 mph 0.01 in Rain Light Rain
11:56 PM 48.0 °F 39.9 °F 74% 29.72 in 10.0 mi SSW 8.1 mph - 0.02 in   Mostly Cloudy