Reporting Station : Leesburg / Godfrey, VA

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24°C

Sunny. Mild.

  • 89%
  • 11 km/hSSW
  • 89%
    Humidity
  • 22°C
    Dew Point
  • 24°C
    Comfort Level
  • 16 km
    Visibility
  • 1018.63 mb

    Barometric Pressure
  • Air Quality
Current Time : 8:38 PM EDT  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: Washington-Dulles International Airport , VA , US
July Data Choose another month
Averages
Average High Temperature
4.40 °C
Average Low Temperature
-6.10 °C
Average Mean Temp
-0.60 °C
Average Dew Point
-6.10 °C
Average Windspeed
20.40 km/h
Average Wind Direction
315.0
Average Morning Relative Humidity
76.0
Average Afternoon Relative Humidity
56.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
7.11
Average Snowfall (US Only)
20.30
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
*
Days With Fog
12
Days With Snow
4
Days With Lows Below Freezing
26
Days above 90° F (32.2° C)
0
Records
Record High
23.90 °C
Record Low
-27.80 °C
Record Wind Speed
100.00 km/h
Record Monthly Snowfall
73.6 cm
Record 24-hour Snowfall
27.90 cm
Record Monthly Rainfall
168 mm
Record 24-hour Rainfall
41 mm
Record Minimum Monthly Precipitation
1.02 mm
Averages
Average High Temperature
6.70 °C
Average Low Temperature
-5.00 °C
Average Mean Temp
1.10 °C
Average Dew Point
-5.60 °C
Average Windspeed
20.40 km/h
Average Wind Direction
315.0
Average Morning Relative Humidity
77.0
Average Afternoon Relative Humidity
52.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
7.11
Average Snowfall (US Only)
17.80
Daily Counts
Days With Precipitation
9
Days With Thunderstorms
*
Days With Fog
10
Days With Snow
3
Days With Lows Below Freezing
23
Days above 90° F (32.2° C)
0
Records
Record High
26.10 °C
Record Low
-25.60 °C
Record Wind Speed
85.20 km/h
Record Monthly Snowfall
71.1 cm
Record 24-hour Snowfall
58.40 cm
Record Monthly Rainfall
147 mm
Record 24-hour Rainfall
53 mm
Record Minimum Monthly Precipitation
0.51 mm
Averages
Average High Temperature
12.80 °C
Average Low Temperature
0.00 °C
Average Mean Temp
6.70 °C
Average Dew Point
-1.10 °C
Average Windspeed
20.40 km/h
Average Wind Direction
315.0
Average Morning Relative Humidity
77.0
Average Afternoon Relative Humidity
48.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
7.87
Average Snowfall (US Only)
7.60
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
1
Days With Fog
11
Days With Snow
2
Days With Lows Below Freezing
17
Days above 90° F (32.2° C)
0
Records
Record High
31.70 °C
Record Low
-14.40 °C
Record Wind Speed
98.20 km/h
Record Monthly Snowfall
27.9 cm
Record 24-hour Snowfall
15.20 cm
Record Monthly Rainfall
147 mm
Record 24-hour Rainfall
46 mm
Record Minimum Monthly Precipitation
2.54 mm
Averages
Average High Temperature
18.30 °C
Average Low Temperature
4.40 °C
Average Mean Temp
11.70 °C
Average Dew Point
3.90 °C
Average Windspeed
20.40 km/h
Average Wind Direction
315.0
Average Morning Relative Humidity
77.0
Average Afternoon Relative Humidity
46.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
7.87
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
2
Days With Fog
11
Days With Snow
*
Days With Lows Below Freezing
6
Days above 90° F (32.2° C)
*
Records
Record High
33.30 °C
Record Low
-8.30 °C
Record Wind Speed
109.30 km/h
Record Monthly Snowfall
10.2 cm
Record 24-hour Snowfall
7.60 cm
Record Monthly Rainfall
185 mm
Record 24-hour Rainfall
53 mm
Record Minimum Monthly Precipitation
0.76 mm
Averages
Average High Temperature
23.30 °C
Average Low Temperature
10.00 °C
Average Mean Temp
17.20 °C
Average Dew Point
10.60 °C
Average Windspeed
13.00 km/h
Average Wind Direction
180.0
Average Morning Relative Humidity
82.0
Average Afternoon Relative Humidity
53.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
10.15
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
12
Days With Thunderstorms
4
Days With Fog
15
Days With Snow
0
Days With Lows Below Freezing
*
Days above 90° F (32.2° C)
1
Records
Record High
36.10 °C
Record Low
-2.20 °C
Record Wind Speed
85.20 km/h
Record Monthly Snowfall
* cm
Record 24-hour Snowfall
* cm
Record Monthly Rainfall
261 mm
Record 24-hour Rainfall
79 mm
Record Minimum Monthly Precipitation
2.03 mm
Averages
Average High Temperature
28.30 °C
Average Low Temperature
15.00 °C
Average Mean Temp
21.70 °C
Average Dew Point
16.10 °C
Average Windspeed
11.10 km/h
Average Wind Direction
180.0
Average Morning Relative Humidity
84.0
Average Afternoon Relative Humidity
54.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
9.90
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
6
Days With Fog
16
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
5
Records
Record High
37.80 °C
Record Low
2.20 °C
Record Wind Speed
118.50 km/h
Record Monthly Snowfall
0.0 cm
Record 24-hour Snowfall
0.00 cm
Record Monthly Rainfall
462 mm
Record 24-hour Rainfall
279 mm
Record Minimum Monthly Precipitation
1.27 mm
Averages
Average High Temperature
30.60 °C
Average Low Temperature
17.80 °C
Average Mean Temp
24.40 °C
Average Dew Point
18.30 °C
Average Windspeed
11.10 km/h
Average Wind Direction
180.0
Average Morning Relative Humidity
85.0
Average Afternoon Relative Humidity
54.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
8.88
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
6
Days With Fog
19
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
11
Records
Record High
40.00 °C
Record Low
5.00 °C
Record Wind Speed
125.90 km/h
Record Monthly Snowfall
0.0 cm
Record 24-hour Snowfall
0.00 cm
Record Monthly Rainfall
180 mm
Record 24-hour Rainfall
66 mm
Record Minimum Monthly Precipitation
2.28 mm
Averages
Average High Temperature
30.00 °C
Average Low Temperature
17.20 °C
Average Mean Temp
23.30 °C
Average Dew Point
17.80 °C
Average Windspeed
11.10 km/h
Average Wind Direction
180.0
Average Morning Relative Humidity
88.0
Average Afternoon Relative Humidity
55.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
10.15
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
5
Days With Fog
21
Days With Snow
0
Days With Lows Below Freezing
0
Days above 90° F (32.2° C)
8
Records
Record High
40.00 °C
Record Low
3.30 °C
Record Wind Speed
109.30 km/h
Record Monthly Snowfall
0.0 cm
Record 24-hour Snowfall
0.00 cm
Record Monthly Rainfall
272 mm
Record 24-hour Rainfall
119 mm
Record Minimum Monthly Precipitation
2.03 mm
Averages
Average High Temperature
26.10 °C
Average Low Temperature
12.80 °C
Average Mean Temp
19.40 °C
Average Dew Point
14.40 °C
Average Windspeed
11.10 km/h
Average Wind Direction
180.0
Average Morning Relative Humidity
89.0
Average Afternoon Relative Humidity
55.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
8.63
Average Snowfall (US Only)
0.00
Daily Counts
Days With Precipitation
8
Days With Thunderstorms
2
Days With Fog
19
Days With Snow
0
Days With Lows Below Freezing
*
Days above 90° F (32.2° C)
3
Records
Record High
37.20 °C
Record Low
-1.10 °C
Record Wind Speed
87.00 km/h
Record Monthly Snowfall
0.0 cm
Record 24-hour Snowfall
0.00 cm
Record Monthly Rainfall
287 mm
Record 24-hour Rainfall
140 mm
Record Minimum Monthly Precipitation
1.52 mm
Averages
Average High Temperature
20.00 °C
Average Low Temperature
5.60 °C
Average Mean Temp
12.80 °C
Average Dew Point
7.20 °C
Average Windspeed
11.10 km/h
Average Wind Direction
180.0
Average Morning Relative Humidity
88.0
Average Afternoon Relative Humidity
52.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
8.38
Average Snowfall (US Only)
*
Daily Counts
Days With Precipitation
8
Days With Thunderstorms
1
Days With Fog
15
Days With Snow
*
Days With Lows Below Freezing
5
Days above 90° F (32.2° C)
*
Records
Record High
32.20 °C
Record Low
-9.40 °C
Record Wind Speed
83.30 km/h
Record Monthly Snowfall
2.5 cm
Record 24-hour Snowfall
2.50 cm
Record Monthly Rainfall
234 mm
Record 24-hour Rainfall
104 mm
Record Minimum Monthly Precipitation
* mm
Averages
Average High Temperature
13.90 °C
Average Low Temperature
1.10 °C
Average Mean Temp
7.80 °C
Average Dew Point
1.70 °C
Average Windspeed
18.50 km/h
Average Wind Direction
315.0
Average Morning Relative Humidity
83.0
Average Afternoon Relative Humidity
54.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
8.12
Average Snowfall (US Only)
2.50
Daily Counts
Days With Precipitation
9
Days With Thunderstorms
1
Days With Fog
12
Days With Snow
1
Days With Lows Below Freezing
15
Days above 90° F (32.2° C)
0
Records
Record High
28.90 °C
Record Low
-12.80 °C
Record Wind Speed
85.20 km/h
Record Monthly Snowfall
27.9 cm
Record 24-hour Snowfall
27.90 cm
Record Monthly Rainfall
198 mm
Record 24-hour Rainfall
61 mm
Record Minimum Monthly Precipitation
0.51 mm
Averages
Average High Temperature
7.20 °C
Average Low Temperature
-3.30 °C
Average Mean Temp
2.20 °C
Average Dew Point
-3.30 °C
Average Windspeed
20.40 km/h
Average Wind Direction
315.0
Average Morning Relative Humidity
78.0
Average Afternoon Relative Humidity
57.0
Typical Sky Cover
OVR
Average Precipitation (US Only)
8.12
Average Snowfall (US Only)
10.20
Daily Counts
Days With Precipitation
10
Days With Thunderstorms
*
Days With Fog
12
Days With Snow
2
Days With Lows Below Freezing
24
Days above 90° F (32.2° C)
0
Records
Record High
25.60 °C
Record Low
-20.00 °C
Record Wind Speed
100.00 km/h
Record Monthly Snowfall
60.9 cm
Record 24-hour Snowfall
27.90 cm
Record Monthly Rainfall
170 mm
Record 24-hour Rainfall
74 mm
Record Minimum Monthly Precipitation
1.02 mm
Day   Reason Upper Soil Moisture Lower Soil Moisture
Sunday cw_fire_extreme
Fire danger extreme 20% 24%
Monday cw_fire_vlow
Fire danger very low 20% 24%
Tuesday cw_fire_low
Fire danger low 20% 24%
Wednesday cw_fire_vlow
Fire danger very low 20% 24%
Thursday cw_fire_low
Fire danger low 20% 24%
Friday cw_fire_vlow
Fire danger very low 20% 24%
Snow conditions provided by SnoCountry Mountain Reports™

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