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

Updated: @ 29-Sep-2016 7:45pm - next update at 7:50pm  
Temperature Summary Outlook
Currently: 65.3, Max: 68.9, Min: 65.3 65.3°F
Colder 0.8°F than last hour.

Comfortable

Feels like: 65°F

24-hr difference
-2.7°FColder 2.7°F than yesterday at this time.
  Today Yesterday
High: 68.9°F
11:21am
68.4°F
8:29pm
Low: 65.3°F
7:43pm
60.4°F
12:00am
High & Low September 2016
High:  95.4°F
09 September at 1:37 PM
Low:  55.6°F
25 September at 6:47 AM
Max Min:  72.1°F
10 September
Min Max:  68.4°F
26 September
High and Low 2016
High:  100.4°F
25 July at 2:12 PM
Low:  7.9°F
14 February at 7:16 AM
Max Min:  77.5°F
13 August
Min Max:  24.8°F
13 February
Record September
High:  95.4°F
at 1:37 PM on 09 September 2016
Low:  42.6°F
at 7:04 AM on 18 September 2013
Max Min:  72.7°F
at 5:07 AM on 09 September 2015
Min Max:  67.1°F
at 3:15 PM on 25 September 2014
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
Degree Days
Heating Degree Days
Today: 0.0 Degree Days
Yesterday: 0.4 Degree Days
Cooling Degree Days
Today: 2.2 Degree Days
Yesterday: 1.2 Degree Days
Heat Index
Now:  65.3°F
Warmest Heat Index
Today:  68.9°F
at 11:21
Yesterday:  68.4°F
at 20:29
September 2016  105.6°F
10 September at 1:36 PM
2016  113.8°F
13 August at 1:07 PM
Station Record September  105.6°F
at 1:36 PM on 10 September 2016
Station All Time  114.2°F
at 12:45 PM on 19 July 2013
Records began on 24 December 2012
Moderate drizzle, Overcast Moderate drizzle, Overcast
 Wind from SSE SSE
3.8
Gust:
9.2 mph
1 Bft - Light air
Today: 15.9 mph 1:20pm
Gust Month: 21.0 mph September 6
Rain Today:  0.98 in
Rain Rate /hr  0.00 in
Rain Last Hour:  0.01 in
Rain 24hrs:  1.10 in
Wind
Station High September 2016
High Gust:  21.0 mph
06 September at 1:39 PM
High Average:  9.6 mph
07 September at 6:37 PM
Station High 2016
High Gust:  35.1 mph
03 April at 12:53 AM
High Average:  16.7 mph
03 April at 3:48 AM
Station Record September
High Gust:  21.0 mph
at 1:39 PM on 06 September 2016
High Average:  18.4 mph
at 4:29 PM on 13 September 2015
Station All Time Record
High Gust:  39.3 mph
at 10:04 PM on 14 February 2015
High Average:  20.1 mph
at 5:25 AM on 15 February 2015
Records began on 24 December 2012
Wind Run
Today:  81.7 miles
Yesterday:  42.0 miles
Highest Wind Run
September 2016  81.7 miles
29 September
2016  187.5 miles
23 January
September  81.7 miles
on 29 September 2016
Station All Time  246.9 miles
on 15 February 2015
Records began on 24 December 2012
Rain
Rain Today: 0.98 in
Rain Rate (/hr): 0.00 in
Rain Yesterday: 0.60 in
This Month: 2.67 in
Season Total: 25.26 in
0 day since last rain.
Days Since Last Dry Day: 3
Station High September 2016
High Day:  0.98 in
29 September
High Hour:  0.37 in
28 September at 12:09 PM
High Rain Rate /hr:  2.40 in
28 September at 12:11 PM
Station High 2016
High Day:  1.18 in
03 June
High Hour:  1.15 in
03 June at 6:22 PM
High Rain Rate /hr:  5.03 in
03 June at 5:35 PM
Station Record September
High Day:  1.77 in
on 29 September 2015
High Hour:  1.11 in
at 1:10 AM on 02 September 2013
High Rain Rate /hr:  2.40 in
at 12:09 PM on 28 September 2016
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
Tonight

Tonight: Showers.  Low around 63. East wind around 17 mph, with gusts as high as 24 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Friday

Friday: Showers likely.  Cloudy, with a high near 68. Northeast wind 11 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely
Friday
Night
Friday Night: Showers likely.  Cloudy, with a low around 62. Northeast wind 7 to 11 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely
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: 96 % Increased 1.0% since last hour.
Dew Point: 64.2°F Decreased 0.7°F since last hour.
Barometer: 30.13 inHg  
Baro Trend: Rising slowly
Today
Pressure High:  30.14 in
Pressure Low:  30.00 in
Dewpoint High:  68.0 °F
Dewpoint Low:  64.2 °F
Humidity High:  100%
Humidity Low:  95%
Station Record
Pressure High:  30.85 in
at 10:04 AM on 28 February 2015
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:  -27.0 °F
at 1:57 AM on 20 February 2015
Records began on 24 December 2012
Snow
Snow Depth:  0 in
Snowfall Today:  
Storm Total: 0.0 in
Total Season Snow: 0.0 in
Total Last Season: 34.0 in
Fire Danger
firedanger
Almanac
Sunrise: 7:04am
Sunset: 6:55pm
Moonrise: 5:39am
Moonset: 6:26pm
Day Length:  11:51
Dawn:  06:38
Dusk:  19:21
Daylight Length:  12:43
 There will be 2min 29s less daylight tomorrow
Cloud Base
cloudbase
CB: 260 ft
UV Index Forecast Today
29-Sep-2016
5.4     Medium 
UV Index Forecast Tomorrow
30-Sep-2016
5.5     Medium 
Air Quality Index
Current AQI 26
Good
Sunlight
11 hrs 49 min 11 sec
of Sunlight Today
Which is
2 min 30 sec Shorter
Than Yesterday

(Noon)
graph (Midnight)
Legend
Moon
Waning Crescent
Waning Crescent, Moon at 27 days in cycle
2%
Illuminated
Trends
These graphs present the temperature, pressure, rainfall, and wind speed trends for the last 12 hours.
The thumbnail graphs are sampled every ten minutes.
The large graphs are sampled every minute.
Weather Graphs
Click on a thumbnail to display the corresponding larger 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: Tonight & Friday
Tonight

Tonight: Showers.  Low around 63. East wind around 17 mph, with gusts as high as 24 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers

Lo 63 °F
NWS forecast: Showers. Low around 63. East wind around 17 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
  Friday

Friday: Showers likely.  Cloudy, with a high near 68. Northeast wind 11 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely

Hi 68 °F
NWS forecast: Showers likely. Cloudy, with a high near 68. Northeast wind 11 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
 NWS Weather Forecast  - Five Day Outlook for Tonight through Monday Night - Last Update: 7:28 pm EDT Sep 29, 2016
Tonight

Tonight: Showers.  Low around 63. East wind around 17 mph, with gusts as high as 24 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Friday

Friday: Showers likely.  Cloudy, with a high near 68. Northeast wind 11 to 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely
Friday
Night
Friday Night: Showers likely.  Cloudy, with a low around 62. Northeast wind 7 to 11 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely
Saturday

Saturday: A chance of showers.  Mostly cloudy, with a high near 74. Northeast wind 5 to 7 mph becoming southeast in the afternoon.  Chance of precipitation is 40%.
Chance
Showers
Saturday
Night
Saturday Night: A chance of showers.  Mostly cloudy, with a low around 61. East wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 30%.
Chance
Showers
Sunday

Sunday: A slight chance of showers.  Mostly sunny, with a high near 77. Chance of precipitation is 20%.
Slight Chance
Showers
Sunday
Night
Sunday Night: Partly cloudy, with a low around 60.
Partly Cloudy
Monday

Monday: Mostly sunny, with a high near 75.
Mostly Sunny
Monday
Night
Monday Night: Partly cloudy, with a low around 59.
Partly Cloudy
Lo 63 °F Hi 68 °F Lo 62 °F Hi 74 °F Lo 61 °F Hi 77 °F Lo 60 °F Hi 75 °F Lo 59 °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.

Random Weather Facts

Weather Terms
Wind Advisory - Sustained winds of 30 mph or greater or gusts to 45 mph or greater for a duration of one hour or longer.