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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
No changes to the forecast.

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-Sep-2026 5:10am - next update at 5:20am  
Temperature Summary Outlook
Currently: 66.1, Max: 68.5, Min: 66.1 66.1°F
Colder 0.2°F than last hour.

Comfortable

Feels like: 66°F

24-hr difference
7°FWarmer 7.0°F than yesterday at this time.
  Today Yesterday
High: 68.5°F
12:00am 		87.6°F
2:28pm
Low: 66.1°F
4:40am 		57.9°F
7:09am
High & Low September 2026
High:  95.7°F
01 September at 2:41 PM
Low:  57.9°F
08 September at 7:09 AM
Max Min:  73.9°F
02 September
Min Max:  82.5°F
05 September
High and Low 2026
High:  101.6°F
04 July at 3:01 PM
Low:  5.2°F
27 January at 7:52 AM
Max Min:  77.9°F
16 July
Min Max:  18.4°F
25 January
Record September
High:  101.5°F
at 15:56 on 06 September 2023
Low:  40.2°F
at 07:12 on 22 September 2020
Max Min:  73.9°F
at 04:46 on 04 September 2018
Min Max:  60.0°F
at 15:53 on 30 September 2022
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:  66.1°F
Coldest Wind Chill
Today:  66.1°F
at 4:40am
Yesterday:  57.9°F
at 7:09am
September 2026  57.9°F
08 September at 7:09 AM
2026  2.9°F
01 February at 8:34 AM
Station September  38.3°F
at 07:38 on 20 September 2020
Station All Time  °F
Records began on 24 December 2012
Degree Days
Heating Degree Days
Today: 0.0 Degree Days
Yesterday: 1.7 Degree Days
Cooling Degree Days
Today: 0.4 Degree Days
Yesterday: 9.0 Degree Days
Heat Index
Now:  66.1°F
Warmest Heat Index
Today:  68.5°F
at 00:00
Yesterday:  95.0°F
at 13:21
September 2026  117.5°F
02 September at 1:40 PM
2026  128.9°F
04 July at 3:04 PM
Station Record September  117.5°F
at 13:40 on 02 September 2026
Station All Time  128.9°F
at 15:04 on 04 July 2026
Records began on 24 December 2012
WeatherCam Thumbnail
North North West Camera
North North West WeatherCam
Clear Clear
Calm -
0
Gust:
 0 mph
0 Bft - Calm
Today: 0 mph 12:00am
Gust Month: 20 mph September 3
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 September 2026
High Gust:  20 mph
03 September at 11:27 PM
High Average:  9 mph
03 September at 11:33 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 September
High Gust:  21 mph
at 13:39 on 06 September 2016
High Average:  18 mph
at 16:29 on 13 September 2015
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:  0.0 miles
Yesterday:  10.5 miles
Highest Wind Run
September 2026  17.4 miles
03 September
2026  101.4 miles
07 February
September  103.7 miles
on 30 September 2017
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: 1.22 in
Season Total: 21.53 in
5 days since last rain.

Days Since Last Dry Day: 0
Station High September 2026
High Day:  1.01 in
03 September
High Hour:  1.06 in
04 September at 12:06 AM
High Rain Rate /hr:  5.65 in
03 September at 11:27 PM
Station High 2026
High Day:  1.35 in
16 March
High Hour:  1.06 in
04 September at 12:06 AM
High Rain Rate /hr:  6.94 in
10 August at 4:38 PM
Station Record September
High Day:  2.41 in
on 01 September 2021
High Hour:  1.59 in
at 03:01 on 01 September 2021
High Rain Rate /hr:  38.40 in
at 10:17 on 22 September 2018
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 Clear
Mostly Clear
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Lo 62 °F Hi 88 °F Lo 71 °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: 87 % Decreased 1.0% since last hour.
Dew Point: 62.1°F Decreased 0.7°F since last hour.
Barometer: 30.23 inHg  
Baro Trend: Steady
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: 6:44am
Sunset: 7:29pm
Moonrise: 4:55am
Moonset: 6:43pm

Day Length:  12:41
Dawn:  06:19
Dusk:  19:54
Daylight Length:  13:35
 There will be 2min 29s less daylight tomorrow

Cloud Base

cloudbase
CB AGL: 905 ft
UV Index

   0.0   
None
High: 0.0 @ 12:00am

Solar Radiation
0 W/m2
High: 0 @  12:00am

Air Quality Index
Current AQI
29
Good

Sunlight

12 hrs 44 min 24 sec
of Sunlight Today
Which is
2 min 28 sec Shorter
Than Yesterday
(Noon) graph (Midnight)
 Legend

Moon


Waning Crescent
Waning Crescent, Moon at 26 days in cycle
4% %
Illuminated
 NWS Weather Forecast  - Outlook: Overnight & Wednesday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 62 °F		 NWS forecast: Mostly clear, with a low around 62. South wind around 6 mph.
Davis VP+ forecast: Partly cloudy with little temperature change.		   Wednesday

Wednesday: Mostly Sunny
Mostly Sunny

Hi 88 °F		 NWS forecast: Mostly sunny, with a high near 88. South wind 6 to 12 mph.
 NWS Weather Forecast  - Five Day Outlook for Overnight through Saturday Night - Last Update: Wed, 09-Sep-2026 4:53am EDT
Overnight

Overnight: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

Thursday: Partly Sunny then Chance Showers And Thunderstorms
Partly Sunny then Chance Showers And T-Storms
Thursday
Night
Thursday Night: Showers And Thunderstorms
Showers And T-Storms
Friday

Friday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
Friday
Night
Friday Night: Mostly Cloudy then Slight Chance Showers And Thunderstorms
Mostly Cloudy then Slight Chance Showers And T-Storms
Saturday

Saturday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Saturday
Night
Saturday Night: Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers And T-Storms Likely then Chance Showers And T-Storms
Lo 62 °F Hi 88 °F Lo 71 °F Hi 88 °F Lo 67 °F Hi 82 °F Lo 65 °F Hi 81 °F Lo 68 °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
Winter Weather Advisory - Hazardous winter weather conditions are occurring, imminent or likely. Conditions will cause a significant inconvenience and if caution is not exercised, will result in a potential threat to life and/or property. The generic term, winter weather advisory, is used for a combination of two or more of the following events; snow, freezing rain or drizzle, sleet, blowing snow.

Today in Weather History

Weather History for September 9
 
1984   Thunderstorms dropped 6 to 13 inches of rain at Tulsa, OK in 6 hours. The flooding claimed 14 lives and caused $90 million in property damage. 4600 cars, 743 houses, and 387 apartments were destroyed or severely damaged in the flood.
1967   A slow moving nor'easter battered New England with high winds, heavy rain, and record late season snow. Winds 70 to 90 mph in gusts occurred along the coast. Over 7 inches of rain fell at Nantucket, MS with 6.57 inches falling in 24 hours to set a new 24 hour rainfall record. 24.9 inches of snow fell at Mount Washington, NH to set a new May snowfall record.