Reporting Station : San Francisco International Airport, CA

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DECEMBER 6TH, 1886-A great snowstorm hit the southern Appalachain Mountains. The three day storm produced 25 inches at Rome GA, 33 inches at Asheville NC, and 42 inches in the mountains. Montgomery AL received a record eleven inches of snow. Columbia SC received one to two inches of sleet.

Previously
DECEMBER 6TH, 1886 A great snowstorm hit the southern Appalachain Mountains. The three day storm produced 25 inches at Rome GA, 33 inches at Asheville NC, and 42 inches in the mountains. Montgomery AL received a record eleven inches of snow. Columbia SC received one to two inches of sleet.
 
DECEMBER 6TH, 1970 A windstorm toppled the National Christmas Tree at the White House.
 
DECEMBER 5TH, 1886 A big snowstorm in the southeastern U.S. produced 11 inches at Montgomery AL, 18.5 inches at Rome GA, and 22.5 inches at Knoxville TN.
 
DECEMBER 5TH, 1953 A killer tornado hit Vicksburg MS killing 38 persons, injuring 270 others, and causing 25 million dollars damage, the most damage since the forty-seven days of continuous shelling the town received in the Civil War.
 
DECEMBER 4TH, 1786 The first of two great early December storms began. The storm produced 18 inches of snow at Morristown NJ, and twenty inches of snow at New Haven CT. It also resulted in high tides at Nantucket which did great damage.
 
DECEMBER 4TH, 1982 The temperature in New York City's Central Park reached 72 degrees to establish a record high for December. The month as a whole was also the warmest of record.
 
DECEMBER 3RD, 1983 Birmingham AL was drenched with 9.22 inches of rain in 24 hours. The rains caused severe flash flooding which literally submerged traffic.
 
DECEMBER 3RD, 1926 Yuma AZ was soaked with 1.10 inch of rain, and by the 10th of the month had received 4.43 inches, making it the wettest December of record. The average annual rainfall for Yuma is 3.38 inches.
 
DECEMBER 2ND, 1925 A late season hurricane caused extensive damage across the Florida peninsula, then moved off the Georgia coast crossing Cape Hatteras as a tropical storm. The storm produced whole gales along the Middle Atlantic and Southern New England coast. Winds gusted to 60 mph at Block Island RI, and reached 64 mph at Atlantic City NJ.
 
DECEMBER 2ND, 1950 A late season tornado killed four persons in Madison County and Bond County, east of St Louis MO. Three tornadoes touched down in Illinois that afternoon, compared to just half a dozen tornadoes in the month of December in 115 years of records up until that time. Thunderstorms also produced hail which caused more than four million dollars damage in the St Louis area, it was the most damaging hailstorm of record for Missouri.
 
DECEMBER 1ST, 1831 The coldest December of record in the northeastern U.S. commenced. Temperatures in New York City averaged 22 degrees, with just four days above freezing, and at Burlington VT the temperature never did get above freezing. The Erie Canal was closed the first day of December, and remained closed the entire month.
 
Wind Advisory
Issued By NWS Field Office Broadcast Time Mon, 29 Dec 2014 03:43:00 PST
Issuing Time Mon, 29 Dec 2014 03:43:00 PST Valid Until Mon, 29 Dec 2014 03:43:00 PST

Strong northerly winds are forecast to develop across the San Francisco Bay Area by midday Tuesday and continue through midday Wednesday. A strong..cold and dry storm system will sweep into northern and central California late Monday night and Tuesday morning. This system will generate strong and gusty north to northest winds across the region from midday Tuesday through midday Wednesday.

History
Weather Station: San Francisco , CA , US
December Data Choose another month
Averages
Average High Temperature
55.94 °F
Average Low Temperature
46.04 °F
Average Mean Temp
51.08 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
4.10
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
11
Days With Thunderstorms
*
Days With Fog
*
Days With Snow
0
Days With Lows Below Freezing
15
Days above 90° F (32.2° C)
0
Records
Record High
78.98 °F
Record Low
30.02 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
* "
Record 24-hour Snowfall
* "
Record Monthly Rainfall
10.72 "
Record 24-hour Rainfall
3.19 "
Record Minimum Monthly Precipitation
0.50 "
Averages
Average High Temperature
60.08 °F
Average Low Temperature
48.02 °F
Average Mean Temp
53.96 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
3.50
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
1
Days With Fog
1
Days With Snow
0
Days With Lows Below Freezing
7
Days above 90° F (32.2° C)
0
Records
Record High
80.96 °F
Record Low
30.92 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
* "
Record 24-hour Snowfall
* "
Record Monthly Rainfall
10.09 "
Record 24-hour Rainfall
2.09 "
Record Minimum Monthly Precipitation
* "
Averages
Average High Temperature
60.98 °F
Average Low Temperature
48.92 °F
Average Mean Temp
55.04 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
2.90
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
*
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
4
Days above 90° F (32.2° C)
0
Records
Record High
84.02 °F
Record Low
35.06 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
* "
Record 24-hour Snowfall
* "
Record Monthly Rainfall
8.98 "
Record 24-hour Rainfall
2.48 "
Record Minimum Monthly Precipitation
* "
Averages
Average High Temperature
62.96 °F
Average Low Temperature
50.00 °F
Average Mean Temp
55.94 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
1.50
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
6
Days With Thunderstorms
1
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
2
Days above 90° F (32.2° C)
*
Records
Record High
93.92 °F
Record Low
39.92 °F
Record Wind Speed
10.35 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
5.52 "
Record 24-hour Rainfall
2.01 "
Record Minimum Monthly Precipitation
* "
Averages
Average High Temperature
64.04 °F
Average Low Temperature
51.08 °F
Average Mean Temp
57.92 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
0.50
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
3
Days With Thunderstorms
0
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
*
Days above 90° F (32.2° C)
*
Records
Record High
96.08 °F
Record Low
44.06 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
4.02 "
Record 24-hour Rainfall
1.42 "
Record Minimum Monthly Precipitation
0.00 "
Averages
Average High Temperature
66.02 °F
Average Low Temperature
53.06 °F
Average Mean Temp
60.08 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
0.20
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
1
Days With Thunderstorms
*
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
*
Records
Record High
100.94 °F
Record Low
46.94 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
1.42 "
Record 24-hour Rainfall
1.30 "
Record Minimum Monthly Precipitation
0.00 "
Averages
Average High Temperature
66.02 °F
Average Low Temperature
53.96 °F
Average Mean Temp
60.08 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
*
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
1
Days With Thunderstorms
1
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
*
Records
Record High
102.92 °F
Record Low
46.94 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
0.20 "
Record 24-hour Rainfall
0.12 "
Record Minimum Monthly Precipitation
0.00 "
Averages
Average High Temperature
66.02 °F
Average Low Temperature
53.96 °F
Average Mean Temp
60.98 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
*
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
1
Days With Thunderstorms
1
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
*
Records
Record High
96.08 °F
Record Low
48.02 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
0.51 "
Record 24-hour Rainfall
0.51 "
Record Minimum Monthly Precipitation
0.00 "
Averages
Average High Temperature
69.98 °F
Average Low Temperature
55.94 °F
Average Mean Temp
62.96 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
0.20
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
1
Days With Thunderstorms
*
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
1
Records
Record High
100.94 °F
Record Low
48.02 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
2.09 "
Record 24-hour Rainfall
2.01 "
Record Minimum Monthly Precipitation
0.00 "
Averages
Average High Temperature
69.08 °F
Average Low Temperature
55.04 °F
Average Mean Temp
62.06 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
1.10
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
4
Days With Thunderstorms
1
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
*
Days above 90° F (32.2° C)
*
Records
Record High
102.02 °F
Record Low
42.98 °F
Record Wind Speed
10.35 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
5.52 "
Record 24-hour Rainfall
2.29 "
Record Minimum Monthly Precipitation
* "
Averages
Average High Temperature
64.04 °F
Average Low Temperature
51.08 °F
Average Mean Temp
57.92 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
2.60
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
8
Days With Thunderstorms
*
Days With Fog
0
Days With Snow
0
Days With Lows Below Freezing
1
Days above 90° F (32.2° C)
0
Records
Record High
86.00 °F
Record Low
39.02 °F
Record Wind Speed
-113.65 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
8.20 "
Record 24-hour Rainfall
2.48 "
Record Minimum Monthly Precipitation
0.00 "
Averages
Average High Temperature
57.02 °F
Average Low Temperature
46.94 °F
Average Mean Temp
51.98 °F
Average Dew Point
* °F
Average Windspeed
* mph
Average Wind Direction
*
Average Morning Relative Humidity
*
Average Afternoon Relative Humidity
*
Typical Sky Cover
*
Average Precipitation (US Only)
3.90
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
0
Days With Fog
0
Days With Snow
*
Days With Lows Below Freezing
11
Days above 90° F (32.2° C)
0
Records
Record High
75.92 °F
Record Low
26.96 °F
Record Wind Speed
10.35 mph
Record Monthly Snowfall
2.5 "
Record 24-hour Snowfall
0.98 "
Record Monthly Rainfall
11.50 "
Record 24-hour Rainfall
3.11 "
Record Minimum Monthly Precipitation
0.00 "
Day   Reason Upper Soil Moisture Lower Soil Moisture
Tuesday cw_fire_vlow
Fire danger very low 31% 28%
Wednesday cw_fire_vlow
Fire danger very low 31% 28%
Thursday cw_fire_vlow
Fire danger very low 31% 28%
Friday cw_fire_vlow
Fire danger very low 31% 28%
Saturday cw_fire_vlow
Fire danger very low 31% 28%
Sunday cw_fire_vlow
Fire danger very low 31% 28%
Snow conditions provided by SnoCountry Mountain Reports™

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