Reporting Station : Ontario International Airport, CA
78%
Humidity
11°C
Dew Point
14°C
Comfort Level
6 km
Visibility
1015.40 mb
Barometric Pressure
Air Quality
Waxing gibbous
Rise 3:31PM
Set 3:09AM
SATURDAY MORNING
ONT / No delays
MAY 18TH, 1980-Mount Saint Helens (in Washington State) erupted spewing ash and smoke sixty-three thousand feet into the air. Heavy ash covered the ground to the immediate northwest, and small particles were carried to the Atlantic coast.
MAY 18TH, 1980
Mount Saint Helens (in Washington State) erupted spewing ash and smoke sixty-three thousand feet into the air. Heavy ash covered the ground to the immediate northwest, and small particles were carried to the Atlantic coast.
MAY 18TH, 1825
A tornado (said to have crossed all of the state of Ohio) smashed into the log cabin settlement of Burlington, northeast of Columbus.
MAY 17TH, 1883
A three day flood in the Black Hills of western South Dakota resulted in a million dollars damage at Rapid City.
MAY 17TH, 1979
A reading of 12 degrees at Mauna Kea Observatory established an all-time record low for the state of Hawaii.
MAY 16TH, 1952
High winds in the Wasatch Canyon of Utah struck Ogden and Brigham City. Winds at Hill Air Force Base gusted to 92 mph.
MAY 16TH, 1874
The Mill Creek disaster occurred west of Northhampton MA. Dam slippage resulted in a flash flood which claimed 143 lives, and caused a million dollars property damage.
MAY 15TH, 1834
The Northern Atlantic Coast States were in the midst of their greatest May snowstorm of record. The hills around Newbury VT were covered with two to three feet of snow.
MAY 15TH, 1972
The worst ice jam flooding of memory for long-time residents took place along the Kuskokwim River and Yukon River in Alaska. It was the first time since 1890 that the two rivers "flowed as one". The towns of Oscarville and Napaskiak were completely inundated.
MAY 14TH, 1896
The mercury plunged to 10 degrees below zero at Climax CO. It was the lowest reading of record for the U.S. during the month of May.
MAY 14TH, 1898
A severe thunderstorm, with some hailstones up to 9.5 inches in circumference, pounded a four mile wide path across Kansas City MO. South-facing windows were broken in nearly every house in central and eastern parts of the city, and several persons were injured. An even larger hailstone was thought to have been found, but it turned out to be a chunk of ice tossed out the window of a building by a prankster.
MAY 13TH, 1930
A man was killed when caught in an open field during a hailstorm northwest of Lubbock TX.
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.
Waxing gibbous
Rise 3:31PM
Set 3:09AM
SATURDAY MORNING
ONT / No delays
History
Weather Station: Ontario International Airport , CA , US
May Data
Choose another month
Averages
Average High Temperature
18.90 °C
Average Low Temperature
5.60 °C
Average Mean Temp
12.20 °C
Average Dew Point
3.90 °C
Average Windspeed
11.10 km/h
Average Wind Direction
0.0
Average Morning Relative Humidity
45.0
Average Afternoon Relative Humidity
74.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
7
Days With Thunderstorms
1
Days With Fog
13
Days With Snow
*
Days With Lows Below Freezing
2
Days above 90° F (32.2° C)
*
Records
Record High
32.20 °C
Record Low
-3.90 °C
Record Wind Speed
101.90 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
20.00 °C
Average Low Temperature
7.20 °C
Average Mean Temp
13.90 °C
Average Dew Point
5.00 °C
Average Windspeed
14.80 km/h
Average Wind Direction
270.0
Average Morning Relative Humidity
44.0
Average Afternoon Relative Humidity
75.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
7
Days With Thunderstorms
1
Days With Fog
14
Days With Snow
0
Days With Lows Below Freezing
*
Days above 90° F (32.2° C)
0
Records
Record High
31.70 °C
Record Low
-1.70 °C
Record Wind Speed
92.60 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
20.00 °C
Average Low Temperature
8.30 °C
Average Mean Temp
14.40 °C
Average Dew Point
7.20 °C
Average Windspeed
16.70 km/h
Average Wind Direction
248.0
Average Morning Relative Humidity
50.0
Average Afternoon Relative Humidity
79.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
9
Days With Thunderstorms
1
Days With Fog
19
Days With Snow
0
Days With Lows Below Freezing
*
Days above 90° F (32.2° C)
*
Records
Record High
36.10 °C
Record Low
-1.10 °C
Record Wind Speed
92.60 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
23.90 °C
Average Low Temperature
10.00 °C
Average Mean Temp
17.20 °C
Average Dew Point
7.80 °C
Average Windspeed
16.70 km/h
Average Wind Direction
270.0
Average Morning Relative Humidity
42.0
Average Afternoon Relative Humidity
75.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
4
Days With Thunderstorms
*
Days With Fog
16
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
2
Records
Record High
43.30 °C
Record Low
1.70 °C
Record Wind Speed
83.30 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
26.10 °C
Average Low Temperature
12.80 °C
Average Mean Temp
19.40 °C
Average Dew Point
11.10 °C
Average Windspeed
16.70 km/h
Average Wind Direction
248.0
Average Morning Relative Humidity
44.0
Average Afternoon Relative Humidity
77.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
3
Days With Thunderstorms
*
Days With Fog
20
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
4
Records
Record High
41.70 °C
Record Low
3.30 °C
Record Wind Speed
94.40 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
30.00 °C
Average Low Temperature
15.00 °C
Average Mean Temp
22.80 °C
Average Dew Point
12.80 °C
Average Windspeed
16.70 km/h
Average Wind Direction
248.0
Average Morning Relative Humidity
39.0
Average Afternoon Relative Humidity
76.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
1
Days With Thunderstorms
*
Days With Fog
19
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
10
Records
Record High
45.60 °C
Record Low
6.10 °C
Record Wind Speed
92.60 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
33.30 °C
Average Low Temperature
17.20 °C
Average Mean Temp
25.60 °C
Average Dew Point
15.00 °C
Average Windspeed
16.70 km/h
Average Wind Direction
248.0
Average Morning Relative Humidity
35.0
Average Afternoon Relative Humidity
73.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
1
Days With Thunderstorms
*
Days With Fog
16
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
21
Records
Record High
45.60 °C
Record Low
11.10 °C
Record Wind Speed
85.20 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
33.30 °C
Average Low Temperature
17.80 °C
Average Mean Temp
25.60 °C
Average Dew Point
15.00 °C
Average Windspeed
18.50 km/h
Average Wind Direction
270.0
Average Morning Relative Humidity
36.0
Average Afternoon Relative Humidity
72.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
1
Days With Thunderstorms
*
Days With Fog
17
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
22
Records
Record High
45.60 °C
Record Low
10.60 °C
Record Wind Speed
83.30 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
31.70 °C
Average Low Temperature
16.70 °C
Average Mean Temp
24.40 °C
Average Dew Point
13.90 °C
Average Windspeed
16.70 km/h
Average Wind Direction
270.0
Average Morning Relative Humidity
38.0
Average Afternoon Relative Humidity
71.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
2
Days With Thunderstorms
1
Days With Fog
16
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
15
Records
Record High
44.40 °C
Record Low
8.30 °C
Record Wind Speed
100.00 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
28.30 °C
Average Low Temperature
13.30 °C
Average Mean Temp
21.10 °C
Average Dew Point
10.60 °C
Average Windspeed
16.70 km/h
Average Wind Direction
270.0
Average Morning Relative Humidity
37.0
Average Afternoon Relative Humidity
73.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
3
Days With Thunderstorms
1
Days With Fog
18
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
8
Records
Record High
43.30 °C
Record Low
4.40 °C
Record Wind Speed
96.30 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
22.80 °C
Average Low Temperature
8.30 °C
Average Mean Temp
16.10 °C
Average Dew Point
5.00 °C
Average Windspeed
11.10 km/h
Average Wind Direction
0.0
Average Morning Relative Humidity
36.0
Average Afternoon Relative Humidity
69.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
4
Days With Thunderstorms
*
Days With Fog
13
Days With Snow
0
Days With Lows Below Freezing
*
Days above 90° F (32.2° C)
1
Records
Record High
35.00 °C
Record Low
-0.60 °C
Record Wind Speed
96.30 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
19.40 °C
Average Low Temperature
5.60 °C
Average Mean Temp
12.80 °C
Average Dew Point
2.80 °C
Average Windspeed
11.10 km/h
Average Wind Direction
0.0
Average Morning Relative Humidity
39.0
Average Afternoon Relative Humidity
70.0
Typical Sky Cover
CLR
Average Precipitation (US Only)
*
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
5
Days With Thunderstorms
*
Days With Fog
12
Days With Snow
0
Days With Lows Below Freezing
1
Days above 90° F (32.2° C)
*
Records
Record High
37.20 °C
Record Low
-4.40 °C
Record Wind Speed
109.30 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
0 mm
Record 24-hour Rainfall
0 mm
Record Minimum Monthly Precipitation
* mm
Waxing gibbous
Rise 3:31PM
Set 3:09AM
SATURDAY MORNING
ONT / No delays
Day
Reason
Upper Soil Moisture
Lower Soil Moisture
Saturday
Fire danger low
16%
22%
Sunday
Fire danger moderate
16%
22%
Monday
Fire danger moderate
16%
22%
Tuesday
Fire danger high
16%
22%
Wednesday
Fire danger moderate
16%
22%
Thursday
Fire danger moderate
16%
22%
Waxing gibbous
Rise 3:31PM
Set 3:09AM
SATURDAY MORNING
ONT / No delays
Waxing gibbous
Rise 3:31PM
Set 3:09AM
SATURDAY MORNING
ONT / No delays
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