Reporting Station : San Francisco International Airport, CA

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64°F

Sunny. Mild.

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  • 5 mphWNW
Current Time : 09:04 AM PDT  Refresh Nearest / Estimated
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SEPTEMBER 24TH, 1926-The temperature at Yellowstone Park dipped to nine degrees below zero. It was the coldest reading of record in the U.S. during September.

Previously
SEPTEMBER 24TH, 1926 The temperature at Yellowstone Park dipped to nine degrees below zero. It was the coldest reading of record in the U.S. during September.
 
SEPTEMBER 24TH, 1950 A smoke pall from western Canada forest fires covered much of the eastern U.S. Daylight was reduced to nighttime darkness in parts of the Northeast. The color of the sun varied from pink to purple, blue, or lavendar. Yellow to grey-tan was common.
 
SEPTEMBER 23RD, 1983 A thunderstorm downburst caused a timber blowdown in the Kaibab National Forest north of the Grand Canyon. Two hundred acres were completely destroyed, and scattered destruction occurred across another 3300 acres. Many trees were snapped off 15 to 30 feet above ground level.
 
SEPTEMBER 23RD, 1815 One of the greatest hurricanes to strike New England made landfall at Long Island and crossed Massachusetts and New Hampshire. It was the worst tempest in nearly two hundred years, equal to the hurricane which struck in 1938, and one of a series of severe summer and autumn storms to affect shipping lanes that year.
 
SEPTEMBER 22ND, 1961 Hurricane Esther made a near complete circle south of Cape Cod. The hurricane then passed over Cape Cod and hit Maine. Its energy was largely spent over the North Atlantic Ocean, however, heavy rains over Maine resulted in widespread local flooding of cellars, low roads, and underpasses.
 
SEPTEMBER 22ND, 1987 Hurricane Emily, the first hurricane to roam the Carribean in nearly six years, made landfall over the Dominican Republic late in the day, packing 125 mph winds. Emily killed three persons and caused thirty million dollars damage.
 
SEPTEMBER 21ST, 1894 A heavy chicken house, sixteen by sixteen feet in area, was picked up by a tornado and wedged between two trees. The hens were found the next day sitting on their eggs in the chicken house, with no windows broken, as though nothing had happened.
 
SEPTEMBER 21ST, 1938 The Great Hurricane of 1938, one of the worst storms in U.S. history, strikes an unexpecting and unprepared New England and other Eastern Seaboard areas. After a devastating landfall in Long Island, the storm lays waste to 40,000 square miles across New York and New England; 600 lose their lives as losses soar to over $350 million, including the destruction of 20,000 homes and 26,000 automobiles.
 
SEPTEMBER 20TH, 1845 The Adirondack Tornado cuts a 275 mi (443 km) swath from Canada to New York, leaving waterspouts whirling on Lake Ontario and Lake Champlain and windfall damage in forests that was still visible over a century later.
 
SEPTEMBER 20TH, 1967 Hurricane Beulah moved into South Texas, and torrential rains from the hurricane turned the rich agricultural areas of South Texas into a large lake. Hurricane Beulah also spawned a record 115 tornadoes.
 
SEPTEMBER 19TH, 1947 The eye of a hurricane passed directly over New Orleans, and the barometric pressure dipped to 28.61 inches. The hurricane killed fifty-one persons, and caused 110 million dollars damage. It produced wind gusts to 155 mph while making landfall over Fort Lauderdale FL two days earlier.
 
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
September 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
Saturday cw_fire_low
Fire danger low 24% 20%
Sunday cw_fire_low
Fire danger low 24% 20%
Monday cw_fire_low
Fire danger low 24% 20%
Tuesday cw_fire_moderate
Fire danger moderate 24% 20%
Wednesday cw_fire_moderate
Fire danger moderate 24% 20%
Thursday cw_fire_moderate
Fire danger moderate 24% 20%
Snow conditions provided by SnoCountry Mountain Reports™

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