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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 Coastal Flood Advisory was issued for this morning`s high tide at Annapolis. Thunderstorm potential may be trending downward today and upward for Sunday.

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: @ 09-May-2026 6:30am - next update at 6:40am  
Temperature Summary Outlook
Currently: 57.2, Max: 59.7, Min: 56.0 57.2°F
Warmer 0.3°F than last hour.

Cool

Feels like: 57°F

24-hr difference
14.8°FWarmer 14.8°F than yesterday at this time.
  Today Yesterday
High: 59.7°F
12:26am 		72.6°F
2:08pm
Low: 56.0°F
3:53am 		41.7°F
6:57am
High & Low May 2026
High:  86.0°F
05 May at 2:51 PM
Low:  38.9°F
03 May at 7:07 AM
Max Min:  60.6°F
06 May
Min Max:  62.1°F
02 May
High and Low 2026
High:  94.0°F
16 April at 2:47 PM
Low:  5.2°F
27 January at 7:52 AM
Max Min:  66.9°F
04 April
Min Max:  18.4°F
25 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:  57.2°F
Coldest Wind Chill
Today:  56.0°F
at 3:53am
Yesterday:  41.7°F
at 6:57am
May 2026  38.9°F
03 May at 7:07 AM
2026  2.9°F
01 February at 8:34 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: 2.0 Degree Days
Yesterday: 7.4 Degree Days
Cooling Degree Days
Today: 0.0 Degree Days
Yesterday: 1.9 Degree Days
Heat Index
Now:  57.3°F
Warmest Heat Index
Today:  59.7°F
at 00:26
Yesterday:  72.6°F
at 14:08
May 2026  84.5°F
05 May at 2:51 PM
2026  97.0°F
16 April at 3:01 PM
Station Record May  105.0°F
at 13:55 on 26 May 2021
Station All Time  124.4°F
at 13:24 on 25 June 2025
Records began on 24 December 2012
WeatherCam Thumbnail
North North West Camera
North North West WeatherCam
Mostly cloudy Mostly cloudy
Wind from S S
0
Gust:
 2 mph
0 Bft - Calm
Today: 7 mph 12:00am
Gust Month: 19 mph May 5
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 2026
High Gust:  19 mph
05 May at 4:05 PM
High Average:  6 mph
05 May at 3:31 PM
Station High 2026
High Gust:  29 mph
07 February at 10:28 AM
High Average:  10 mph
12 March at 11:03 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:  3.5 miles
Yesterday:  18.1 miles
Highest Wind Run
May 2026  45.0 miles
06 May
2026  101.4 miles
07 February
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: 0.27 in
Season Total: 8.39 in
2 days since last rain.

Days Since Last Dry Day: 0
Station High May 2026
High Day:  0.21 in
06 May
High Hour:  0.13 in
06 May at 9:48 AM
High Rain Rate /hr:  0.64 in
07 May at 12:15 AM
Station High 2026
High Day:  1.35 in
16 March
High Hour:  0.78 in
16 March at 1:42 PM
High Rain Rate /hr:  5.76 in
16 March at 12:46 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
Overnight

Overnight: Mostly Cloudy
Mostly Cloudy
Saturday

Saturday: Mostly Cloudy then Scattered Showers And Thunderstorms
Mostly Cloudy then Scattered Showers And T-Storms
Saturday
Night
Saturday Night: Scattered Showers And Thunderstorms then Partly Cloudy
Scattered Showers And T-Storms then Partly Cloudy
Lo 54 °F Hi 73 °F Lo 54 °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: 62 % Increased 2.0% since last hour.
Dew Point: 44.3°F Increased 0.4°F since last hour.
Barometer: 29.85 inHg Falling 0.01 inHg/hr
Baro Trend: Falling slowly
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: 13.0 in
Total Last Season: 15.5 in
Fire Danger
firedanger
Almanac
Sunrise: 6:01am
Sunset: 8:11pm
Moonrise: 2:06am
Moonset: 12:19pm

Day Length:  14:06
Dawn:  05:34
Dusk:  20:39
Daylight Length:  15:05
 There will be 1min 55s more daylight tomorrow

Cloud Base

cloudbase
CB AGL: 2934 ft
UV Index

   0.0   
None
High: 0.0 @ 12:00am

Solar Radiation
18 W/m2
High: 18 @  6:29am

Air Quality Index
Current AQI
19
Good

Sunlight

14 hrs 9 min 46 sec
of Sunlight Today
Which is
1 min 58 sec Longer
Than Yesterday
(Noon) graph (Midnight)
 Legend

Moon


Waning Gibbous
Waning Gibbous, Moon at 21 days in cycle
54% %
Illuminated
 NWS Weather Forecast  - Outlook: Overnight & Saturday
Overnight

Overnight: Mostly Cloudy
Mostly Cloudy

Lo 54 °F		 NWS forecast: Mostly cloudy, with a low around 54. South wind around 8 mph.
Davis VP+ forecast: Not available		   Saturday

Saturday: Mostly Cloudy then Scattered Showers And Thunderstorms
Mostly Cloudy then Scattered Showers And T-Storms

Hi 73 °F		 NWS forecast: Scattered showers and thunderstorms between 2pm and 5pm, then scattered showers and thunderstorms. Mostly cloudy, with a high near 73. Southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
 NWS Weather Forecast  - Five Day Outlook for Overnight through Tuesday Night - Last Update: Sat, 09-May-2026 5:18am EDT
Overnight

Overnight: Mostly Cloudy
Mostly Cloudy
Saturday

Saturday: Mostly Cloudy then Scattered Showers And Thunderstorms
Mostly Cloudy then Scattered Showers And T-Storms
Saturday
Night
Saturday Night: Scattered Showers And Thunderstorms then Partly Cloudy
Scattered Showers And T-Storms then Partly Cloudy
Sunday

Sunday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And T-Storms then Showers And T-Storms Likely
Monday

Monday: Rain Showers Likely
Rain Showers Likely
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Tuesday

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Lo 54 °F Hi 73 °F Lo 54 °F Hi 82 °F Lo 52 °F Hi 63 °F Lo 44 °F Hi 66 °F Lo 48 °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
Enhanced Fujita Scale or EF-Scale - A scale of wind damage intensity in which wind speeds are inferred from analysis of wind damage. All tornadoes and most other windstorms are assigned a numerical rating from this scale according to the most intense damage caused by the storm. EF0 (weak) 65–85 mph, light damage EF1 (weak) 86–110 mph, moderate damage EF2 (strong) 111–135 mph, considerable damage EF3 (strong) 136–165 mph, severe damage EF4 (violent) 166–200 mph, devastating damage EF5 (violent) >200 mph, incredible damage

Today in Weather History

Weather History for May 9
 
1965   A mile-wide F5 tornado swept farms clean near Colome, SD.
1981   Dallas/Fort Worth was hit by their worst hailstorm ever, as baseball to grapefruit sized hail and 100 mph winds caused $200 million in damages. The hail actually accumulated 8 inches deep in Cedar Hill, TX.