Alexandria, VA  -  Coastal Flood Advisory Coastal Flood Advisory        Arlington Cnty, VA  -  Coastal Flood Advisory Coastal Flood Advisory        Charles Cnty, MD  -  Coastal Flood Advisory Coastal Flood Advisory        Falls Church, VA  -  Coastal Flood Advisory Coastal Flood Advisory        Washington, DC  -  Coastal Flood Advisory Coastal Flood Advisory        Tidal Potomac  -  Small Craft Advisory Small Craft Advisory      

Current Northeast Radar & North America Lightning


Northeast Regional Radar


Regional Radar

North America Lightning


North America Lightning Strikes
Radar image courtesy of Weather Underground. Lightning Data courtesy of Blitzortung.org and its Contributors.
spacer

Current Clifton Virginia Conditions & NWS Forecast

Updated: @ 25-May-2017 12:45am - next update at 1:00am  
Temperature Summary Outlook
Currently: 57.6, Max: 57.9, Min: 57.6 57.6°F
Colder 1.4°F than last hour.

Cool

Feels like: 57°F

24-hr difference
-0.9°FColder 0.9°F than yesterday at this time.
  Today Yesterday
High: 57.9°F
12:00am
66.2°F
12:30pm
Low: 57.6°F
12:22am
56.1°F
5:49am
High & Low May 2017
High:  92.8°F
17 May at 1:40 PM
Low:  38.7°F
09 May at 4:26 AM
Max Min:  71.2°F
01 May
Min Max:  56.7°F
12 May
High and Low 2017
High:  92.8°F
17 May at 1:40 PM
Low:  10.0°F
09 January at 2:00 AM
Max Min:  71.2°F
01 May
Min Max:  24.6°F
07 January
Record May
High:  92.8°F
at 1:40 PM on 17 May 2017
Low:  37.4°F
at 4:41 AM on 16 May 2016
Max Min:  72.0°F
at 11:59 PM on 27 May 2015
Min Max:  54.3°F
at 11:31 AM on 06 May 2016
Station All Time Record
High:  100.4°F
at 2:12 PM on 25 July 2016
Low:  1.0°F
at 7:23 AM on 23 January 2014
Max Min:  77.5°F
at 6:27 AM on 13 August 2016
Min Max:  16.7°F
at 12:04 PM on 16 February 2015
Records began on 24 December 2012
Wind Chill
Now:  57.4°F
Coldest Wind Chill
Today:  57.1°F
at 12:24am
Yesterday:  56.1°F
at 5:49am
May 2017  38.7°F
09 May at 4:26 AM
2017  4.1°F
08 January at 2:24 AM
Station May  37.4°F
at 4:41 AM on 16 May 2016
Station All Time  -15.8°F
at 1:57 AM on 21 February 2015
Records began on 24 December 2012
Degree Days
Heating Degree Days
Today: 0.2 Degree Days
Yesterday: 4.5 Degree Days
Cooling Degree Days
Today: 0.0 Degree Days
Yesterday: 0.0 Degree Days
Heat Index
Now:  57.6°F
Warmest Heat Index
Today:  57.9°F
at 00:00
Yesterday:  66.2°F
at 12:30
May 2017  95.2°F
17 May at 1:40 PM
2017  95.2°F
17 May at 1:40 PM
Station Record May  96.7°F
at 2:38 PM on 13 May 2014
Station All Time  114.2°F
at 12:45 PM on 19 July 2013
Records began on 24 December 2012
Overcast Overcast
 Wind from SSW SSW
4.3
Gust:
8.0 mph
1 Bft - Light air
Today: 10.9 mph 12:07am
Gust Month: 23.0 mph May 3
Rain Today:  0.01 in
Rain Rate /hr  0.00 in
Rain Last Hour:  0.02 in
Rain 24hrs:  0.27 in
Wind
Station High May 2017
High Gust:  23.0 mph
03 May at 11:13 AM
High Average:  14.0 mph
18 May at 8:01 PM
Station High 2017
High Gust:  30.1 mph
08 March at 3:21 AM
High Average:  22.7 mph
22 March at 10:08 AM
Station Record May
High Gust:  26.0 mph
at 11:09 AM on 15 May 2016
High Average:  15.1 mph
at 2:07 PM on 08 May 2016
Station All Time Record
High Gust:  39.3 mph
at 10:04 PM on 14 February 2015
High Average:  22.7 mph
at 10:08 AM on 22 March 2017
Records began on 24 December 2012
Wind Run
Today:  3.4 miles
Yesterday:  37.7 miles
Highest Wind Run
May 2017  120.9 miles
01 May
2017  179.1 miles
14 March
May  139.2 miles
on 13 May 2015
Station All Time  246.9 miles
on 15 February 2015
Records began on 24 December 2012
Rain
Rain Today: 0.01 in
Rain Rate (/hr): 0.00 in
Rain Yesterday: 0.28 in
This Month: 4.90 in
Season Total: 13.89 in
0 day since last rain.
Days Since Last Dry Day: 3
Station High May 2017
High Day:  1.17 in
11 May
High Hour:  0.72 in
18 May at 8:23 PM
High Rain Rate /hr:  2.40 in
18 May at 8:04 PM
Station High 2017
High Day:  1.20 in
31 March
High Hour:  0.72 in
18 May at 8:23 PM
High Rain Rate /hr:  2.52 in
06 April at 1:28 PM
Station Record May
High Day:  1.57 in
on 16 May 2014
High Hour:  1.01 in
at 5:34 AM on 16 May 2014
High Rain Rate /hr:  2.40 in
at 8:04 PM on 18 May 2017
Station All Time Record
High Day:  3.02 in
on 30 April 2014
High Hour:  1.98 in
at 4:12 PM on 20 March 2015
High Rain Rate /hr:  5.03 in
at 5:35 PM on 03 June 2016
High Month:  7.18 in
April 2014
Records began on 24 December 2012
Overnight

Overnight: Rain
Rain
Thursday

Thursday: Rain then Chance Showers And Thunderstorms
Rain then Chance Showers And Thunderstorms
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Lightning VA MD DC WV DE
Viginia Lighting
Radar Washington DC Metro Area
Local Radar
Storm Prediction Center Activity Chart
SPC Activity
Humidity & Barometer
Humidity: 95 % Increased 2.0% since last hour.
Dew Point: 56.1°F  
Barometer: 29.65 inHg Falling 0.02  inHg/hr
Baro Trend: Falling
Today
Pressure High:  29.68 in
Pressure Low:  29.65 in
Dewpoint High:  56.3 °F
Dewpoint Low:  56.0 °F
Humidity High:  95%
Humidity Low:  94%
Station Record
Pressure High:  31.41 in
at 12:14 PM on 23 March 2017
Pressure Low:  29.12 in
at 5:28 PM on 12 March 2014
Dewpoint High:  79.7 °F
at 11:26 AM on 19 July 2013
Dewpoint Low:  -58.6 °F
at 6:50 PM on 19 February 2017
Records began on 24 December 2012
Snow
Snow Depth: 0 in
Snowfall Today: No snow today
Storm Total: 0 in
Total Season Snow: 5.2 in
Total Last Season: 34.0 in
Fire Danger
firedanger
Almanac
Sunrise: 5:50am
Sunset: 8:23pm
Moonrise: 5:57am
Moonset: 8:07pm
Day Length:  14:33
Dawn:  05:19
Dusk:  20:54
Daylight Length:  15:35
 There will be 1min 26s more daylight tomorrow
Cloud Base
cloudbase
CB: 320 ft
UV Index Forecast Today
25-May-2017

6.6  High 
UV Index Forecast Tomorrow
26-May-2017

7.6  High 
Air Quality Index
Current AQI 45
Good
Sunlight
14 hrs 35 min 13 sec
of Sunlight Today
Which is
1 min 22 sec Longer
Than Yesterday

(Noon)
graph (Midnight)
Legend
Moon
Waning Crescent
Waning Crescent, Moon at 27 days in cycle
1 %
Illuminated
Trends
These graphs present the temperature, pressure, rainfall, and wind speed trends for the last 24 hours.
The thumbnail graphs are sampled every ten minutes.
The large graphs are sampled every minute.
Weather Graphs
Click on weather description tab below to display the corresponding graph in the panel above.
Wind Graph Thumbnail Temperature Graph Thumbnail Pressure Graph Thumbnail Rain Graph Thumbnail
Wind Direction Thumbnail Temp Min/Max Graph Thumbnail Humidity Graph Thumbnail Today's Rainfall Graph Thumbnail Daily Rain Graph Thumbnail
 NWS Weather Forecast  - Outlook: Overnight & Thursday
Overnight

Overnight: Rain
Rain

Lo 59 °F
NWS forecast: Rain before 2am, then rain and a slight chance of thunderstorms. Cloudy, with a low around 59. East northeast wind around 13 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
  Thursday

Thursday: Rain then Chance Showers And Thunderstorms
Rain then Chance Showers And Thunderstorms

Hi 75 °F
NWS forecast: Rain and a slight chance of thunderstorms before 8am, then a chance of rain showers between 8am and 11am, then a chance of showers and thunderstorms. Cloudy, with a high near 75. South wind 6 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
 NWS Weather Forecast  - Five Day Outlook for Overnight through Sunday Night - Last Update: Wed, 24-May-2017 10:27pm EDT
Overnight

Overnight: Rain
Rain
Thursday

Thursday: Rain then Chance Showers And Thunderstorms
Rain then Chance Showers And Thunderstorms
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Friday

Friday: Slight Chance Rain Showers
Slight Chance Rain Showers
Friday
Night
Friday Night: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy
Saturday

Saturday: Slight Chance Rain Showers then Chance Showers And Thunderstorms
Slight Chance Rain Showers then Chance Showers And Thunderstorms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Sunday

Sunday: Showers And Thunderstorms Likely
Showers And Thunderstorms Likely
Sunday
Night
Sunday Night: Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Lo 59 °F Hi 75 °F Lo 56 °F Hi 77 °F Lo 58 °F Hi 80 °F Lo 63 °F Hi 79 °F Lo 64 °F

NWS Forecast Maps

NOAA Forecast Map for Today


Forecast Map for Today

NOAA Forecast Map for Tomorrow


Forecast Map for Tomorrow
Forecast map for Today courtesy of NOAA. Forecast map for Tomorrow courtesy of NOAA.
Countdown to Summer
 Summer Solstice begins June 21st at 12:24am   EDT  
 

 

Random Weather Facts

Clouds
Mostly sunny and mostly clear indicate the same amount of cloud coverage - about 25 percent. Mostly sunny is used during the daytime, and mostly clear is used at night when there is no sun.

Today in Weather History

Weather History for May 25
 
1988
Unseasonably cool weather prevailed in the Upper Midwest. Marquette, MI, reported a record low of 26 degrees. Thunderstorms in the north central U.S. produced wind gusts to 62 mph at Idaho Falls, ID, and produced 4 inches of rain in less than four hours in northern Buffalo County. (The National Weather Summary) (Storm Data)

1990
Evening thunderstorms spawned four tornadoes in Kansas and Missouri, and there were three dozen reports of large hail or damaging winds. Thunderstorms produced hail two inches in diameter at Cole Camp, and wind gusts to 72 mph at Rosebud. Heavy thunderstorm rains produced flash flooding in central Missouri. Flood waters swept through Washington State Park southwest of Saint Louis, and nearly one hundred persons had to be rescued from water as much as twenty feet deep. The flood waters swept away a number of vehicles, some were carried as much as four miles away. (The National Weather Summary) (Storm Data)