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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
A slow-moving cold front will approach from the Midwest through tonight, then gradually cross the Mid-Atlantic from west to east through early next week. High pressure will likely return at least briefly for the middle of next week before another cold front approaches the area Thursday.

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: @ 02-May-2025 8:20am - next update at 8:30am  
Temperature Summary Outlook
Currently: 70.0, Max: 75.5, Min: 66.7 70.0°F
Warmer 0.5°F than last hour.

Comfortable

Feels like: 70°F

24-hr difference
6.9°FWarmer 6.9°F than yesterday at this time.
  Today Yesterday
High: 75.5°F
12:15am 		84.4°F
3:35pm
Low: 66.7°F
7:10am 		58.5°F
6:42am
High & Low May 2025
High:  84.4°F
01 May at 3:35 PM
Low:  58.5°F
01 May at 6:42 AM
Max Min:  58.5°F
01 May
Min Max:  84.4°F
01 May
High and Low 2025
High:  85.7°F
29 April at 3:42 PM
Low:  7.4°F
23 January at 6:32 AM
Max Min:  69.0°F
30 March
Min Max:  22.4°F
21 January
Record May
High:  93.7°F
at 15:47 on 31 May 2022
Low:  32.0°F
at 03:46 on 10 May 2020
Max Min:  72.0°F
at 23:59 on 27 May 2015
Min Max:  51.3°F
at 14:37 on 09 May 2020
Station All Time Record
High:  101.9°F
at 15:51 on 02 August 2024
Low:  1.0°F
at 07:23 on 23 January 2014
Max Min:  78.1°F
at 06:58 on 23 June 2024
Min Max:  16.7°F
at 12:04 on 16 February 2015
Records began on 24 December 2012
Wind Chill
Now:  70.0°F
Coldest Wind Chill
Today:  66.7°F
at 7:10am
Yesterday:  58.5°F
at 6:42am
May 2025  58.5°F
01 May at 6:42 AM
2025  -3.6°F
22 January at 6:58 AM
Station May  27.4°F
at 07:06 on 09 May 2020
Station All Time  °F
Records began on 24 December 2012
Degree Days
Heating Degree Days
Today: 0.0 Degree Days
Yesterday: 1.0 Degree Days
Cooling Degree Days
Today: 2.1 Degree Days
Yesterday: 8.5 Degree Days
Heat Index
Now:  70.0°F
Warmest Heat Index
Today:  75.5°F
at 00:15
Yesterday:  90.0°F
at 14:40
May 2025  90.0°F
01 May at 2:40 PM
2025  90.0°F
01 May at 2:40 PM
Station Record May  105.0°F
at 13:55 on 26 May 2021
Station All Time  122.8°F
at 14:48 on 16 July 2024
Records began on 24 December 2012
WeatherCam Thumbnail
North North West Camera
North North West WeatherCam
Mostly cloudy Mostly cloudy
Wind from SSE SSE
1
Gust:
 5 mph
0 Bft - Calm
Today: 11 mph 12:01am
Gust Month: 11 mph May 1
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 May 2025
High Gust:  11 mph
01 May at 3:46 PM
High Average:  3 mph
01 May at 3:57 PM
Station High 2025
High Gust:  27 mph
01 March at 2:22 PM
High Average:  11 mph
31 March at 9:02 AM
Station Record May
High Gust:  27 mph
at 15:33 on 26 May 2017
High Average:  15 mph
at 14:07 on 08 May 2016
Station All Time Record
High Gust:  42 mph
at 12:56 on 04 January 2018
High Average:  24 mph
at 13:07 on 02 March 2018
Records began on 24 December 2012
Wind Run

Today:  2.8 miles
Yesterday:  22.0 miles
Highest Wind Run
May 2025  22.0 miles
01 May
2025  93.0 miles
16 March
May  139.2 miles
on 13 May 2015
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: 0.00 in
Season Total: 9.47 in
6 days since last rain.

Days Since Last Dry Day: 0
Station High May 2025
High Day:  0.00 in
01 May
High Hour:  0.00 in
01 May at 12:00 AM
High Rain Rate /hr:  0.00 in
01 May at 12:00 AM
Station High 2025
High Day:  1.53 in
21 April
High Hour:  0.43 in
26 April at 3:07 PM
High Rain Rate /hr:  6.26 in
26 April at 2:43 PM
Station Record May
High Day:  2.46 in
on 31 May 2018
High Hour:  2.16 in
at 18:26 on 31 May 2018
High Rain Rate /hr:  7.29 in
at 20:36 on 26 May 2021
Station All Time Record
High Day:  5.17 in
on 21 July 2018
High Hour:  2.21 in
at 16:13 on 22 July 2020
High Rain Rate /hr:  64.00 in
at 10:49 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: Mostly Sunny then Scattered Showers And Thunderstorms
Mostly Sunny then Scattered Showers And T-Storms
Tonight

Tonight: Isolated Rain Showers then Partly Cloudy
Isolated Rain Showers then Partly Cloudy
Saturday

Saturday: Isolated Rain Showers then Scattered Showers And Thunderstorms
Isolated Rain Showers then Scattered Showers And T-Storms
Hi 86 °F Lo 65 °F Hi 87 °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: 82 % Decreased 2.0% since last hour.
Dew Point: 64.2°F Increased 2.5°F since last hour.
Barometer: 29.91 inHg Rising 0.02 inHg/hr
Baro Trend: Rising
Today
Pressure High:  30.09 in
Pressure Low:  29.99 in
Dewpoint High:  33.1 °F
Dewpoint Low:  19.6 °F
Humidity High:  80%
Humidity Low:  40%
Station Record
Pressure High:  31.41 in
at 12:14 on 23 March 2017
Pressure Low:  28.99 in
at 07:41 on 07 February 2020
Dewpoint High:  82.7 °F
at 11:55 on 05 July 2024
Dewpoint Low:  -27.0 °F
at 01:57 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: 15.5 in
Total Last Season: 10.0 in
Fire Danger
firedanger
Almanac
Sunrise: 6:08am
Sunset: 8:04pm
Moonset: 1:05am
Moonrise: 10:11am

Day Length:  13:53
Dawn:  05:42
Dusk:  20:32
Daylight Length:  14:50
 There will be 2min 6s more daylight tomorrow

Cloud Base

cloudbase
CB AGL: 1306 ft
UV Index

   0.9   
 Low 
High: 0.9 @ 8:18am

Solar Radiation
345 W/m2
High: 345 @  8:19am

Air Quality Index
Current AQI
55
Moderate

Sunlight

13 hrs 55 min 55 sec
of Sunlight Today
Which is
2 min 8 sec Longer
Than Yesterday
(Noon) graph (Midnight)
 Legend

Moon


Waxing Crescent
Waxing Crescent, Moon at 5 days in cycle
29% %
Illuminated
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Mostly Sunny then Scattered Showers And Thunderstorms
Mostly Sunny then Scattered Showers And T-Storms

Hi 86 °F		 NWS forecast: Scattered showers and thunderstorms after 4pm. Mostly sunny, with a high near 86. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Davis VP+ forecast: Partly cloudy and cooler.		   Tonight

Tonight: Isolated Rain Showers then Partly Cloudy
Isolated Rain Showers then Partly Cloudy

Lo 65 °F		 NWS forecast: Isolated rain showers between 8pm and midnight. Partly cloudy, with a low around 65. Southwest wind 3 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
 NWS Weather Forecast  - Five Day Outlook for Today through Tuesday - Last Update: Fri, 02-May-2025 7:30am EDT
Today

Today: Mostly Sunny then Scattered Showers And Thunderstorms
Mostly Sunny then Scattered Showers And T-Storms
Tonight

Tonight: Isolated Rain Showers then Partly Cloudy
Isolated Rain Showers then Partly Cloudy
Saturday

Saturday: Isolated Rain Showers then Scattered Showers And Thunderstorms
Isolated Rain Showers then Scattered Showers And T-Storms
Saturday
Night
Saturday Night: Showers And Thunderstorms
Showers And T-Storms
Sunday

Sunday: Showers And Thunderstorms
Showers And T-Storms
Sunday
Night
Sunday Night: Showers And Thunderstorms
Showers And T-Storms
Monday

Monday: Showers And Thunderstorms
Showers And T-Storms
Monday
Night
Monday Night: Showers And Thunderstorms
Showers And T-Storms
Tuesday

Tuesday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Hi 86 °F Lo 65 °F Hi 87 °F Lo 65 °F Hi 75 °F Lo 63 °F Hi 75 °F Lo 62 °F Hi 78 °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
Sleet - Sleet or ice pellets are solid grains of ice formed from the freezing of rain or the refreezing of melted snow, which bounce off the ground and other objects.

Today in Weather History

Weather History for May 2
 
1929
Virginia's worst tornado disaster occurred. Six tornadoes, two of which were west of the Blue Mountains, killed 22 people. Twelve children and a teacher were killed at Rye Cove, in Scott County. Four schools were destroyed by the storms. (The Weather Channel)
1989
Thunderstorms developing to the north of a warm front produced severe weather in Oklahoma and Texas. There were 93 reports of severe weather. Thunderstorm winds gusted to 80 mph at Beattie, and baseball size hail was reported at Ranger and Breckenridge. Juneau AK reported a record high temperature of 72 degrees while Honolulu equalled their record low for the month of May with a reading of 60 degrees. (The National Weather Summary) (Storm Data)