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Radar image courtesy of Weather Underground. Lightning Data courtesy of Blitzortung.org and its Contributors.
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Current Clifton Virginia Conditions & NWS Forecast

Updated: @ 21-Feb-2018 2:30am - next update at 2:45am  
Temperature Summary Outlook
Currently: 63.3, Max: 64.6, Min: 63.3 63.3°F
Colder 0.5°F than last hour.

Comfortable

Feels like: 63°F

24-hr difference
12.6°FWarmer 12.6°F than yesterday at this time.
  Today Yesterday
High: 64.6°F
12:00am
79.2°F
2:03pm
Low: 63.3°F
2:18am
48.4°F
12:00am
High & Low February 2018
High:  79.2°F
20 February at 2:03 PM
Low:  10.2°F
03 February at 6:02 AM
Max Min:  49.5°F
15 February
Min Max:  35.2°F
04 February
High and Low 2018
High:  79.2°F
20 February at 2:03 PM
Low:  3.2°F
07 January at 7:21 AM
Max Min:  57.6°F
12 January
Min Max:  20.3°F
06 January
Record February
High:  79.2°F
at 2:03 PM on 20 February 2018
Low:  3.2°F
at 7:02 AM on 20 February 2015
Max Min:  53.1°F
at 5:28 AM on 07 February 2017
Min Max:  16.7°F
at 12:04 PM on 16 February 2015
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:  63.3°F
Coldest Wind Chill
Today:  63.3°F
at 2:18am
Yesterday:  47.3°F
at 12:01am
February 2018  10.2°F
03 February at 6:02 AM
2018  -0.4°F
06 January at 7:00 AM
Station February  -15.8°F
at 1:57 AM on 21 February 2015
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: 0.1 Degree Days
Yesterday: 5.2 Degree Days
Cooling Degree Days
Today: 0.0 Degree Days
Yesterday: 4.3 Degree Days
Heat Index
Now:  63.3°F
Warmest Heat Index
Today:  64.6°F
at 00:00
Yesterday:  79.2°F
at 14:03
February 2018  79.2°F
20 February at 2:03 PM
2018  79.2°F
20 February at 2:03 PM
Station Record February  79.2°F
at 2:03 PM on 20 February 2018
Station All Time  114.2°F
at 12:45 PM on 19 July 2013
Records began on 24 December 2012
Few Clouds Few Clouds
 Wind from ENE ENE
3.7
Gust:
7.1 mph
1 Bft - Light air
Today: 10.9 mph 12:37am
Gust Month: 24.2 mph February 2
Rain Today:  0.00 in
Rain Rate /hr  0.00 in
Rain Last Hour:  0.00 in
Rain 24hrs:  0.00 in
Wind
Station High February 2018
High Gust:  24.2 mph
02 February at 9:10 AM
High Average:  13.4 mph
02 February at 10:48 AM
Station High 2018
High Gust:  42.2 mph
04 January at 12:56 PM
High Average:  16.0 mph
04 January at 12:58 PM
Station Record February
High Gust:  39.3 mph
at 10:04 PM on 14 February 2015
High Average:  22.1 mph
at 11:28 AM on 09 February 2017
Station All Time Record
High Gust:  42.2 mph
at 12:56 PM on 04 January 2018
High Average:  22.7 mph
at 10:08 AM on 22 March 2017
Records began on 24 December 2012
Wind Run
Today:  10.8 miles
Yesterday:  134.8 miles
Highest Wind Run
February 2018  134.8 miles
20 February
2018  199.5 miles
04 January
February  246.9 miles
on 15 February 2015
Station All Time  246.9 miles
on 15 February 2015
Records began on 24 December 2012
Rain
Rain Today: 0.00 in
Rain Rate (/hr): 0.00 in
Rain Yesterday: 0.00 in
This Month: 3.54 in
Season Total: 4.79 in
2 days since last rain.
Days Since Last Dry Day: 0
Station High February 2018
High Day:  0.96 in
04 February
High Hour:  0.30 in
11 February at 5:37 AM
High Rain Rate /hr:  0.84 in
11 February at 5:11 AM
Station High 2018
High Day:  0.96 in
04 February
High Hour:  0.33 in
12 January at 7:50 PM
High Rain Rate /hr:  3.12 in
12 January at 7:40 PM
Station Record February
High Day:  1.13 in
on 03 February 2014
High Hour:  0.40 in
at 8:24 AM on 16 February 2016
High Rain Rate /hr:  2.52 in
at 8:32 AM on 22 February 2015
Station All Time Record
High Day:  3.02 in
on 30 April 2014
High Hour:  6.61 in
at 2:09 PM on 04 August 2017
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: Patchy Drizzle
Patchy Drizzle
Wednesday

Wednesday: Patchy Drizzle then Partly Sunny
Patchy Drizzle then Partly Sunny
Wednesday
Night
Wednesday Night: Chance Light Rain
Chance Light Rain
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: 78 % Increased 2.0% since last hour.
Dew Point: 56.4°F Increased 0.2°F since last hour.
Barometer: 30.31 inHg  
Baro Trend: Steady
Today
Pressure High:  30.33 in
Pressure Low:  30.31 in
Dewpoint High:  56.5 °F
Dewpoint Low:  55.8 °F
Humidity High:  78%
Humidity Low:  74%
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: 4.5 in
Total Last Season: 5.2 in
Fire Danger
firedanger
Almanac
Sunrise: 6:53am
Sunset: 5:54pm
Moonrise: 10:13am
Moonset: 11:50pm
Day Length:  11:01
Dawn:  06:26
Dusk:  18:21
Daylight Length:  11:55
 There will be 2min 24s more daylight tomorrow
Cloud Base
cloudbase
CB: 1581 ft
UV Index Forecast Today
21-Feb-2018

3.8  Medium 
UV Index Forecast Tomorrow
22-Feb-2018

3.9  Medium 
Air Quality Index
Current AQI 44
Good
Sunlight
11 hrs 2 min 49 sec
of Sunlight Today
Which is
2 min 26 sec Longer
Than Yesterday

(Noon)
graph (Midnight)
Legend
Moon
Waxing Crescent
Waxing Crescent, Moon at 6 days in cycle
28 %
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 & Wednesday
Overnight

Overnight: Patchy Drizzle
Patchy Drizzle

Lo 56 °F
NWS forecast: Patchy fog before 4am, then patchy drizzle and patchy fog. Mostly cloudy, with a low around 56. South wind around 9 mph.
  Wednesday

Wednesday: Patchy Drizzle then Partly Sunny
Patchy Drizzle then Partly Sunny

Hi 77 °F
NWS forecast: Patchy drizzle and patchy fog before 10am. Partly sunny, with a high near 77. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.
 NWS Weather Forecast  - Five Day Outlook for Overnight through Saturday Night - Last Update: Tue, 20-Feb-2018 1:18pm EST
Overnight

Overnight: Patchy Drizzle
Patchy Drizzle
Wednesday

Wednesday: Patchy Drizzle then Partly Sunny
Patchy Drizzle then Partly Sunny
Wednesday
Night
Wednesday Night: Chance Light Rain
Chance Light Rain
Thursday

Thursday: Light Rain Likely
Light Rain Likely
Thursday
Night
Thursday Night: Light Rain Likely
Light Rain Likely
Friday

Friday: Light Rain Likely then Chance Rain Showers
Light Rain Likely then Chance Rain Showers
Friday
Night
Friday Night: Chance Rain Showers
Chance Rain Showers
Saturday

Saturday: Rain Showers Likely
Rain Showers Likely
Saturday
Night
Saturday Night: Rain Showers Likely
Rain Showers Likely
Lo 56 °F Hi 77 °F Lo 50 °F Hi 53 °F Lo 38 °F Hi 53 °F Lo 48 °F Hi 64 °F Lo 53 °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 Spring
 Vernal Equinox begins March 20th at 12:15pm   EST  
 

 

Random Weather Facts

Lightning
Lightning's return stroke is hotter than the surface of the sun. Lightning is 50,000 degrees F. The sun is about 11,000 degrees F.

Today in Weather History

Weather History for February 21
 
1936
The temperature at Langdon, ND, climbed above zero for the first time in six weeks. Readings never got above freezing during all three winter months. (David Ludlum)

1987
Low pressure over central California produced gale force winds along the coast, and produced thunderstorms which pelted Stockton, Oakland and San Jose with small hail. (The National Weather Summary) (Storm Data)