Reporting Station : San Francisco International Airport, CA

There are alert 3 Weather Alerts for your area.
58°F

Passing clouds. Cool.

  • 90%
  • 13 mphNW
  • 90%
    Humidity
  • 55°F
    Dew Point
  • 55°F
    Comfort Level
  • 10 mi
    Visibility
  • 29.93 in

    Barometric Pressure
  • Air Quality
Current Time : 02:53 AM PDT  Refresh Nearest / Estimated
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JULY 20TH, 1977-At Johnstown, PA, where over 2,000 perished in a flood on May 31, 1889, another resulting from 8.5 in (216 mm) of rain falling in seven hours, drowns 76 and destroys property valued at $424 million.

Previously
JULY 20TH, 1977 At Johnstown, PA, where over 2,000 perished in a flood on May 31, 1889, another resulting from 8.5 in (216 mm) of rain falling in seven hours, drowns 76 and destroys property valued at $424 million.
 
JULY 20TH, 1930 The temperature at Washington D.C. soared to an all-time record of 106 degrees. The next day Millsboro reached 110 degrees to set a record for the state of Delaware. July 1930 was one of the hottest and driest summers in the U.S., particularly in the Missouri Valley where severe drought conditions developed. Toward the end of the month state records were set for Kentucky with 114 degrees, and Mississippi with 115 degrees.
 
JULY 19TH, 1886 Along the Florida peninsula, between Cedar Keys and Jacksonville, the third hurricane within a month causes extensive damages.
 
JULY 19TH, 1974 A severe thunderstorm with winds to 80 mph and up to two inches of rain washed out four to five foot deep sections of roadway in Lake Havasu City AZ. Three persons in a station wagon died as it was carried 3000 feet down a wash by a ten foot wall of water.
 
JULY 18TH, 1889 A cloudburst in West Virginia along the small creeks in Wirt County, Jackson County and Wood County claimed twenty lives. Rockport WV reported nineteen inches of rain in two hours and ten minutes that Thursday evening. Tygart Creek rose 22 feet in one hour, and villages were swept away on Tygart, Slate, Tucker, and Sandy Creeks.
 
JULY 18TH, 1942 A record deluge occurred at Smethport in northern Pennsylvania, with 30.7 inches in just six hours. The downpours and resultant flooding in Pennsylvania were devastating.
 
JULY 17TH, 1974 After striking a tree and passing through a chain, lightning kills Norma Jean, a 6500 lb. performing elephant tethered to a tree in the town square at Oquawka, IL where a circus had pitched a big top.
 
JULY 17TH, 1941 A prolonged heat wave over Washington State finally came to an end. Lightning from untimely thunderstorms was responsible for 598 forest fires.
 
JULY 16TH, 1946 The temperature at Medford OR soared to an all-time high of 115 degrees to begin a two week heat wave. During that Oregon heat wave the mercury hit 100 degrees at Sexton Summit for the only time in forty years of records.
 
JULY 16TH, 1975 An early afternoon thunderstorm raked the east side of Tucson AZ with gale force winds, heavy rain, and numerous lightning strikes. A thirteen year old boy was swept through a forty foot long culvert by raging waters before being rescued.
 
JULY 15TH, 1980 The suburbs of Minneapolis are hammered by powerful thunderstorms, hailstorms and small tornadoes, leaving 100,000 without power. Downward rushing winds cause an estimated $43 million in damages in Dakota County.
 
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
July 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_moderate
Fire danger moderate 21% 24%
Sunday cw_fire_moderate
Fire danger moderate 21% 24%
Monday cw_fire_high
Fire danger high 21% 24%
Tuesday cw_fire_moderate
Fire danger moderate 21% 24%
Wednesday cw_fire_moderate
Fire danger moderate 21% 24%
Thursday cw_fire_moderate
Fire danger moderate 21% 24%
Snow conditions provided by SnoCountry Mountain Reports™

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