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Coastal Flood Advisory COASTAL FLOOD ADVISORY - Washington, DC
Small Craft Advisory SMALL CRAFT ADVISORY - Tidal Potomac
Test Message TEST MESSAGE - Montgomery Cnty(C+SE), MD  - Montgomery Cnty(NW), MD

WASHINGTON DC METRO AREA FORECAST DISCUSSION
Surface high pressure moves south along the eastern Appalachians today. A warm front lifts through the area by Sunday bringing a significant warm up heading into early next week. The next chance for widespread precipitation arrives with a series of cold fronts Tuesday into Wednesday next week.

Current DC Area Radar & North America Lightning


Northeast US Radar

Regional Radar

North America Lightning

North America Lightning Strikes
Radar image courtesy of NWS. Lightning Data courtesy of Blitzortung.org and its Contributors.
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Current Clifton Virginia Conditions & NWS Forecast

Updated: @ 27-Apr-2024 7:30am - next update at 7:40am  
Temperature Summary Outlook
Currently: 51.0, Max: 53.8, Min: 50.7 51.0°F
Colder 0.1°F than last hour.

Cool

Feels like: 51°F

24-hr difference
7.2°FWarmer 7.2°F than yesterday at this time.
  Today Yesterday
High: 53.8°F
12:00am 		67.5°F
3:31pm
Low: 50.7°F
5:51am 		40.8°F
5:36am
High & Low April 2024
High:  87.7°F
15 April at 1:39 PM
Low:  34.6°F
22 April at 7:18 AM
Max Min:  62.5°F
11 April
Min Max:  51.5°F
03 April
High and Low 2024
High:  87.7°F
15 April at 1:39 PM
Low:  8.9°F
17 January at 7:32 AM
Max Min:  62.5°F
11 April
Min Max:  26.5°F
20 January
Record April
High:  90.7°F
at 3:39 PM on 20 April 2023
Low:  25.0°F
at 7:19 AM on 03 April 2021
Max Min:  68.7°F
at 6:40 AM on 30 April 2017
Min Max:  44.1°F
at 5:10 PM on 09 April 2018
Station All Time Record
High:  101.5°F
at 3:56 PM on 06 September 2023
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:  51.0°F
Coldest Wind Chill
Today:  49.1°F
at 3:58am
Yesterday:  40.8°F
at 5:36am
April 2024  33.0°F
06 April at 5:37 AM
2024  3.7°F
17 January at 9:00 AM
Station April  17.4°F
at 5:35 AM on 02 April 2021
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: 4.1 Degree Days
Yesterday: 11.3 Degree Days
Cooling Degree Days
Today: 0.0 Degree Days
Yesterday: 0.2 Degree Days
Heat Index
Now:  51.0°F
Warmest Heat Index
Today:  53.8°F
at 00:00
Yesterday:  67.5°F
at 15:31
April 2024  87.8°F
15 April at 2:48 PM
2024  87.8°F
15 April at 2:48 PM
Station Record April  92.1°F
at 2:25 PM on 29 April 2017
Station All Time  122.6°F
at 3:16 PM on 28 July 2023
Records began on 24 December 2012
WeatherCam Thumbnail
North North West Camera
North North West WeatherCam
Overcast Overcast
Calm ESE
0.0
Gust:
 0.0 mph
0 Bft - Calm
Today: 9.0 mph 12:21am
Gust Month: 28.0 mph April 13
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 April 2024
High Gust:  28.0 mph
13 April at 3:44 AM
High Average:  9.0 mph
13 April at 9:00 AM
Station High 2024
High Gust:  28.0 mph
10 March at 5:26 PM
High Average:  9.0 mph
13 April at 9:00 AM
Station Record April
High Gust:  35.1 mph
at 12:53 AM on 03 April 2016
High Average:  20.7 mph
at 2:09 PM on 12 April 2018
Station All Time Record
High Gust:  42.2 mph
at 12:56 PM on 04 January 2018
High Average:  24.3 mph
at 1:07 PM on 02 March 2018
Records began on 24 December 2012
Wind Run

Today:  2.5 miles
Yesterday:  21.2 miles
Highest Wind Run
April 2024  65.7 miles
17 April
2024  106.4 miles
28 February
April  175.3 miles
on 16 April 2022
Station All Time  284.2 miles
on 02 March 2018
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: 1.09 in
Season Total: 10.93 in
15 days since last rain.

Days Since Last Dry Day: 0
Station High April 2024
High Day:  0.51 in
03 April
High Hour:  0.27 in
03 April at 9:35 AM
High Rain Rate /hr:  1.83 in
02 April at 9:23 PM
Station High 2024
High Day:  1.53 in
09 January
High Hour:  0.33 in
28 January at 1:30 AM
High Rain Rate /hr:  1.88 in
28 February at 6:29 PM
Station Record April
High Day:  3.02 in
on 30 April 2014
High Hour:  0.63 in
at 8:42 AM on 15 April 2014
High Rain Rate /hr:  26.18 in
at 11:00 AM on 08 April 2023
Station All Time Record
High Day:  5.17 in
on 21 July 2018
High Hour:  2.21 in
at 4:13 PM on 22 July 2020
High Rain Rate /hr:  64.00 in
at 10:49 AM on 19 October 2021
High Month:  10.27 in
July 2018
Records began on 24 December 2012
WeatherCam Thumbnail
South South West Camera
South South West WeatherCam
Today

Today: Scattered Rain Showers
Scattered Rain Showers
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Hi 61 °F Lo 52 °F Hi 84 °F
Lightning VA MD DC WV DE

Viginia Lighting
Radar Washington DC Metro Area

  GRLevel3 radar from NWS station KLWX

Storm Prediction Center Activity Chart

SPC Activity

Humidity & Barometer
Humidity: 76 % Increased 1.0% since last hour.
Dew Point: 43.7°F Increased 0.6°F since last hour.
Barometer: 30.464 inHg Rising 0.01 inHg/hr
Baro Trend: Rising slowly
Today
Pressure High:  30.464 in
Pressure Low:  30.431 in
Dewpoint High:  44.0 °F
Dewpoint Low:  38.4 °F
Humidity High:  77%
Humidity Low:  56%
Station Record
Pressure High:  31.410 in
at 12:14 PM on 23 March 2017
Pressure Low:  28.987 in
at 7:41 AM on 07 February 2020
Dewpoint High:  82.0 °F
at 1:58 PM on 12 July 2021
Dewpoint Low:  -27.0 °F
at 1:57 AM on 20 February 2015
Records began on 24 December 2012
Snow

Snow Depth: 0.0 in
Snowfall Today: No Snow Today
Storm Total: 0.0 in
Total Season Snow: 10.00 in
Total Last Season: 0.0 in
Fire Danger
firedanger
Almanac
Sunrise: 6:15am
Sunset: 7:58pm
Moonrise: 12:00am
Moonset: 8:13am

Day Length:  13:43
Dawn:  05:48
Dusk:  20:26
Daylight Length:  14:38
 There will be 2min 15s more daylight tomorrow

Cloud Base

cloudbase
CB: 1659 ft
UV Index

   0.0   
None
High: 0.0 @ 12:00am

Solar Radiation
65 W/m2
High: 65 @  7:24am

Air Quality Index
Current AQI
8
Good

Sunlight

13 hrs 42 min 50 sec
of Sunlight Today
Which is
2 min 14 sec Longer
Than Yesterday
(Noon) graph (Midnight)
 Legend

Moon


Waning Gibbous
Waning Gibbous, Moon at 17 days in cycle
88% %
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 Wind Direction Thumbnail Temperature Graph Thumbnail Temp Min/Max Graph Thumbnail Humidity Graph Thumbnail Pressure Graph Thumbnail
Today's Rainfall Graph Thumbnail Rain Graph Thumbnail Daily Rain Graph Thumbnail Solar Radiation Graph Thumbnail UV Index Graph Thumbnail Sunshine Hours Graph Thumbnail
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Scattered Rain Showers
Scattered Rain Showers

Hi 61 °F		 NWS forecast: Scattered rain showers between 9am and 5pm. Cloudy, with a high near 61. Southeast wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Davis VP+ forecast: Partly cloudy with little temperature change.		   Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 52 °F		 NWS forecast: Mostly cloudy, with a low around 52. South wind 5 to 9 mph. New rainfall amounts less than a tenth of an inch possible.
 NWS Weather Forecast  - Five Day Outlook for Today through Wednesday - Last Update: Sat, 27-Apr-2024 4:43am EDT
Today

Today: Scattered Rain Showers
Scattered Rain Showers
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday

Monday: Sunny
Sunny
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Hi 61 °F Lo 52 °F Hi 84 °F Lo 62 °F Hi 89 °F Lo 63 °F Hi 87 °F Lo 61 °F Hi 82 °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

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 April 27
 
1989   The world's deadliest tornado killed 1300 people in Manikganj District, Bangladesh. Twelve thousand were injured.
1938   A mile wide tornado, likely an F5, swept for 25 miles through Garden County, NE. A teacher and students were outside watching the sky and saw no funnel. Suddenly the teacher's car and a house were lifted from the ground and the school disintegrated. Three students were killed and their bodies found over a thousand feet away.