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San Francisco, California Weather, Forecast, Temperature and Precipitation - CLRSearch

San Francisco, California Weather, Forecast, Temperature and Precipitation

San Francisco, California Weather, Forecast, Temperature and Precipitation Statistics


2012 Weather Summary San Francisco, CA California United States
Weather Index 13 16 100
Hail Index 12 1 100
Hurricane Index 12 6 100
Tornado Index 16 33 100
Wind Index 12 2 100
 
Annual Maximum Avg. Temperature 63 °F 72 °F N/A
Annual Minimum Avg. Temperature 51 °F 51 °F N/A
Annual Avg. Temperature 57 °F 61.5 °F N/A
Percent of Possible Sunshine 66 74 N/A
Mean Sky Cover (Sunrise to Sunset - Out of 10) 5 5 N/A
Mean Number of Days Clear (Out of 365 Days) 160 167 N/A
Mean Number of Days Rain (Out of 365 Days) 67 55 N/A
Mean Number of Days Snow (Out of 365 Days) 0 0 N/A
Avg. Annual Precipitation (Total Inches) 20" 17" N/A
Avg. Annual Snowfall (Total Inches) 0" 1" N/A
2012 Average Monthly Low Temperature San Francisco, CA California United States
Avg. Annual Low Temperature 51 °F 51 °F N/A
Avg. January Low Temperature 42.82 °F 34.95 °F N/A
Avg. February Low Temperature 44.76 °F 37.99 °F N/A
Avg. March Low Temperature 45.46 °F 39.87 °F N/A
Avg. April Low Temperature 46.74 °F 43.45 °F N/A
Avg. May Low Temperature 48.99 °F 48.81 °F N/A
Avg. June Low Temperature 51.28 °F 56.5 °F N/A
Avg. July Low Temperature 52.7 °F 62.55 °F N/A
Avg. August Low Temperature 53.47 °F 61.43 °F N/A
Avg. September Low Temperature 53.33 °F 56.95 °F N/A
Avg. October Low Temperature 51.06 °F 48.6 °F N/A
Avg. November Low Temperature 47.16 °F 40.73 °F N/A
Avg. December Low Temperature 43.57 °F 35.47 °F N/A
2012 Average Monthly High Temperature San Francisco, CA California United States
Avg. Annual High Temperature 63 °F 72 °F N/A
Avg. January High Temperature 56.41 °F 57.15 °F N/A
Avg. February High Temperature 59.25 °F 60.84 °F N/A
Avg. March High Temperature 61.41 °F 65.59 °F N/A
Avg. April High Temperature 55.29 °F 71.87 °F N/A
Avg. May High Temperature 55.31 °F 81.64 °F N/A
Avg. June High Temperature 57.58 °F 90.59 °F N/A
Avg. July High Temperature 58.53 °F 98.67 °F N/A
Avg. August High Temperature 58.95 °F 97 °F N/A
Avg. September High Temperature 61.75 °F 90.41 °F N/A
Avg. October High Temperature 61.63 °F 79.88 °F N/A
Avg. November High Temperature 63.03 °F 66.58 °F N/A
Avg. December High Temperature 57.13 °F 58.06 °F N/A
2012 Average Monthly Precipitation San Francisco, CA California United States
Avg. Annual Precipitation 20" 17" N/A
Avg. January Precipitation 5.29" 4.46" N/A
Avg. February Precipitation 4.32" 4.15" N/A
Avg. March Precipitation 3.49" 4.05" N/A
Avg. April Precipitation 1.33" 1.55" N/A
Avg. May Precipitation 0.61" 0.7" N/A
Avg. June Precipitation 0.18" 0.24" N/A
Avg. July Precipitation 0.06" 0.04" N/A
Avg. August Precipitation 0.12" 0.03" N/A
Avg. September Precipitation 0.33" 0.42" N/A
Avg. October Precipitation 1.28" 1.19" N/A
Avg. November Precipitation 3.69" 2.31" N/A
Avg. December Precipitation 3.77" 2.78" N/A

Annual Heating Degree Days (HDD): A form of Degree Day used to estimate energy requirements for heating. Typically, heating degree days are calculated as how much colder the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 55°F on a certain day, there were 10 HDD that day because 65 - 55 = 10, according to the National Weather Service.

Annual Cooling Degree Days (CDD): A form of Degree Day used to estimate energy requirements for air conditioning or refrigeration. Typically, cooling degree days are calculated as how much warmer the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 75°F on a certain day, there were 10 CDD that day because 75 - 65 = 10, according to the National Weather Service.

Mean Sky Cover: Reflects the approximate amount that the sky is covered with clouds, sunrise to sunset on a scale of 0 to 10.

Index score: (100 = National Average) for an area is compared to the national average of 100. A score of 200 indicates twice the national average, while 50 indicates half the national average. Note: A higher Weather Index score represents better overall weather (higher number good). A higher Hail, Hurricane or Tornado Index means the chance of that weather event is higher (higher number bad).

Information is deemed reliable but not guaranteed. Demographic Information FAQ



San Francisco, California Demographics Summary