Reporting Station : Leesburg / Godfrey, VA

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72°F

Clear. Mild.

  • 94%
  • 0 mphN
  • 94%
    Humidity
  • 70°F
    Dew Point
  • 67°F
    Comfort Level
  • 10 mi
    Visibility
  • 30.07 in

    Barometric Pressure
  • Air Quality
Current Time : 00:11 AM EDT  Refresh Nearest / Estimated
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JULY 21ST, 1975-Six inches of rain fell across Mercer County NJ in just ten hours causing the worst flooding in twenty years. Assunpink Creek crested eleven feet above flood stage at Hamilton and Trenton, the highest level of record. Traffic was brought to a standstill, and railway service between New York City and Washington D.C. was cut off for two days. Flooding left 1000 persons homeless, and caused an estimated 25 million dollars damage.

Previously
JULY 21ST, 1975 Six inches of rain fell across Mercer County NJ in just ten hours causing the worst flooding in twenty years. Assunpink Creek crested eleven feet above flood stage at Hamilton and Trenton, the highest level of record. Traffic was brought to a standstill, and railway service between New York City and Washington D.C. was cut off for two days. Flooding left 1000 persons homeless, and caused an estimated 25 million dollars damage.
 
JULY 21ST, 1983 A record breaking low -128.6 F is recorded at the Soviet Union's Vostok Station, at Antartica.
 
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.
 
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
39.92 °F
Average Low Temperature
21.02 °F
Average Mean Temp
30.92 °F
Average Dew Point
21.02 °F
Average Windspeed
12.65 mph
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)
2.80
Average Snowfall (US Only)
8.00
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
75.02 °F
Record Low
-18.04 °F
Record Wind Speed
62.00 mph
Record Monthly Snowfall
73.6 "
Record 24-hour Snowfall
10.99 "
Record Monthly Rainfall
6.62 "
Record 24-hour Rainfall
1.62 "
Record Minimum Monthly Precipitation
0.40 "
Averages
Average High Temperature
44.06 °F
Average Low Temperature
23.00 °F
Average Mean Temp
33.98 °F
Average Dew Point
21.92 °F
Average Windspeed
12.65 mph
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)
2.80
Average Snowfall (US Only)
7.01
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
78.98 °F
Record Low
-14.08 °F
Record Wind Speed
52.82 mph
Record Monthly Snowfall
71.1 "
Record 24-hour Snowfall
23.01 "
Record Monthly Rainfall
5.79 "
Record 24-hour Rainfall
2.09 "
Record Minimum Monthly Precipitation
0.20 "
Averages
Average High Temperature
55.04 °F
Average Low Temperature
32.00 °F
Average Mean Temp
44.06 °F
Average Dew Point
30.02 °F
Average Windspeed
12.65 mph
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)
3.10
Average Snowfall (US Only)
2.99
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
89.06 °F
Record Low
6.08 °F
Record Wind Speed
60.88 mph
Record Monthly Snowfall
27.9 "
Record 24-hour Snowfall
5.99 "
Record Monthly Rainfall
5.79 "
Record 24-hour Rainfall
1.81 "
Record Minimum Monthly Precipitation
1.00 "
Averages
Average High Temperature
64.94 °F
Average Low Temperature
39.92 °F
Average Mean Temp
53.06 °F
Average Dew Point
39.02 °F
Average Windspeed
12.65 mph
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)
3.10
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
91.94 °F
Record Low
17.06 °F
Record Wind Speed
67.77 mph
Record Monthly Snowfall
10.2 "
Record 24-hour Snowfall
2.99 "
Record Monthly Rainfall
7.29 "
Record 24-hour Rainfall
2.09 "
Record Minimum Monthly Precipitation
0.30 "
Averages
Average High Temperature
73.94 °F
Average Low Temperature
50.00 °F
Average Mean Temp
62.96 °F
Average Dew Point
51.08 °F
Average Windspeed
8.06 mph
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)
4.00
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
96.98 °F
Record Low
28.04 °F
Record Wind Speed
52.82 mph
Record Monthly Snowfall
* "
Record 24-hour Snowfall
* "
Record Monthly Rainfall
10.28 "
Record 24-hour Rainfall
3.11 "
Record Minimum Monthly Precipitation
0.80 "
Averages
Average High Temperature
82.94 °F
Average Low Temperature
59.00 °F
Average Mean Temp
71.06 °F
Average Dew Point
60.98 °F
Average Windspeed
6.88 mph
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)
3.90
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
100.04 °F
Record Low
35.96 °F
Record Wind Speed
73.47 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
18.20 "
Record 24-hour Rainfall
10.99 "
Record Minimum Monthly Precipitation
0.50 "
Averages
Average High Temperature
87.08 °F
Average Low Temperature
64.04 °F
Average Mean Temp
75.92 °F
Average Dew Point
64.94 °F
Average Windspeed
6.88 mph
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)
3.50
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
104.00 °F
Record Low
41.00 °F
Record Wind Speed
78.06 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
7.09 "
Record 24-hour Rainfall
2.60 "
Record Minimum Monthly Precipitation
0.90 "
Averages
Average High Temperature
86.00 °F
Average Low Temperature
62.96 °F
Average Mean Temp
73.94 °F
Average Dew Point
64.04 °F
Average Windspeed
6.88 mph
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)
4.00
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
104.00 °F
Record Low
37.94 °F
Record Wind Speed
67.77 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
10.72 "
Record 24-hour Rainfall
4.69 "
Record Minimum Monthly Precipitation
0.80 "
Averages
Average High Temperature
78.98 °F
Average Low Temperature
55.04 °F
Average Mean Temp
66.92 °F
Average Dew Point
57.92 °F
Average Windspeed
6.88 mph
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)
3.40
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
98.96 °F
Record Low
30.02 °F
Record Wind Speed
53.94 mph
Record Monthly Snowfall
0.0 "
Record 24-hour Snowfall
0.00 "
Record Monthly Rainfall
11.31 "
Record 24-hour Rainfall
5.52 "
Record Minimum Monthly Precipitation
0.60 "
Averages
Average High Temperature
68.00 °F
Average Low Temperature
42.08 °F
Average Mean Temp
55.04 °F
Average Dew Point
44.96 °F
Average Windspeed
6.88 mph
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)
3.30
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
89.96 °F
Record Low
15.08 °F
Record Wind Speed
51.65 mph
Record Monthly Snowfall
2.5 "
Record 24-hour Snowfall
0.98 "
Record Monthly Rainfall
9.22 "
Record 24-hour Rainfall
4.10 "
Record Minimum Monthly Precipitation
* "
Averages
Average High Temperature
57.02 °F
Average Low Temperature
33.98 °F
Average Mean Temp
46.04 °F
Average Dew Point
35.06 °F
Average Windspeed
11.47 mph
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)
3.20
Average Snowfall (US Only)
0.98
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
84.02 °F
Record Low
8.96 °F
Record Wind Speed
52.82 mph
Record Monthly Snowfall
27.9 "
Record 24-hour Snowfall
10.99 "
Record Monthly Rainfall
7.80 "
Record 24-hour Rainfall
2.40 "
Record Minimum Monthly Precipitation
0.20 "
Averages
Average High Temperature
44.96 °F
Average Low Temperature
26.06 °F
Average Mean Temp
35.96 °F
Average Dew Point
26.06 °F
Average Windspeed
12.65 mph
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)
3.20
Average Snowfall (US Only)
4.02
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
78.08 °F
Record Low
-4.00 °F
Record Wind Speed
62.00 mph
Record Monthly Snowfall
60.9 "
Record 24-hour Snowfall
10.99 "
Record Monthly Rainfall
6.70 "
Record 24-hour Rainfall
2.92 "
Record Minimum Monthly Precipitation
0.40 "
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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