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Test Message TEST MESSAGE - Montgomery Cnty(C+SE), MD  - Montgomery Cnty(NW), MD

WASHINGTON DC METRO AREA FORECAST DISCUSSION
Showers and thunderstorms continue to develop and expand in coverage near and west of the Appalachians as well as over the Virginia Piedmont.

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: @ 12-Sep-2026 10:20pm - next update at 10:30pm  
Temperature Summary Outlook
Currently: 75.3, Max: 80.5, Min: 68.7 75.3°F
Colder 1.2°F than last hour.

Comfortable

Feels like: 75°F

24-hr difference
4.3°FWarmer 4.3°F than yesterday at this time.
  Today Yesterday
High: 80.5°F
6:02pm 		80.5°F
2:23pm
Low: 68.7°F
12:21am 		69.0°F
11:52pm
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:  80.5°F
11 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:  75.3°F
Coldest Wind Chill
Today:  68.7°F
at 12:21am
Yesterday:  69.0°F
at 11:52pm
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: 0.0 Degree Days
Cooling Degree Days
Today: 8.8 Degree Days
Yesterday: 10.2 Degree Days
Heat Index
Now:  75.3°F
Warmest Heat Index
Today:  86.2°F
at 18:02
Yesterday:  84.7°F
at 14:27
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
Mostly cloudy Mostly cloudy
Wind from ESE ESE
1
Gust:
 4 mph
0 Bft - Calm
Today: 8 mph 11:31am
Gust Month: 20 mph September 3
Rain Today:  0.01 in
Rain Rate /hr  0.00 in
Rain Last Hour:  0.00 in
Rain 24hrs:  0.01 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:  13.2 miles
Yesterday:  9.6 miles
Highest Wind Run
September 2026  22.5 miles
09 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: 0.01 in
Rain Rate (/hr): 0.00 in
Rain Yesterday: 0.30 in
This Month: 1.53 in
Season Total: 21.84 in
0 day since last rain.

Days Since Last Dry Day: 1
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
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday

Sunday: Patchy Fog then Partly Sunny
Patchy Fog then Partly Sunny
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Lo 69 °F Hi 86 °F Lo 69 °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: 93 % Increased 2.0% since last hour.
Dew Point: 73.1°F Decreased 0.2°F since last hour.
Barometer: 29.99 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: 6:47am
Sunset: 7:24pm
Moonrise: 8:23am
Moonset: 7:57pm

Day Length:  12:34
Dawn:  06:21
Dusk:  19:50
Daylight Length:  13:28
 There will be 2min 30s less daylight tomorrow

Cloud Base

cloudbase
CB AGL: 492 ft
UV Index

   0.0   
None
High: 4.5 @ 11:26am

Solar Radiation
0 W/m2
High: 789 @  11:20am

Air Quality Index
Current AQI
29
Good

Sunlight

12 hrs 36 min 58 sec
of Sunlight Today
Which is
2 min 29 sec Shorter
Than Yesterday
(Noon) graph (Midnight)
 Legend

Moon


Waxing Crescent
Waxing Crescent, Moon at 2 days in cycle
5% %
Illuminated
 NWS Weather Forecast  - Outlook: Tonight & Sunday
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Lo 69 °F		 NWS forecast: A chance of showers and thunderstorms before 10pm, then a chance of showers and thunderstorms between 10pm and 2am, then patchy fog and showers and thunderstorms. Cloudy, with a low around 69. South wind 1 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Davis VP+ forecast: Increasing clouds with little temperature change.		   Sunday

Sunday: Patchy Fog then Partly Sunny
Patchy Fog then Partly Sunny

Hi 86 °F		 NWS forecast: Patchy fog and a chance of showers and thunderstorms before 7am, then patchy fog and scattered showers and thunderstorms between 7am and 9am. Partly sunny, with a high near 86. West wind 1 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
 NWS Weather Forecast  - Five Day Outlook for Tonight through Wednesday Night - Last Update: Sat, 12-Sep-2026 7:53pm EDT
Tonight

Tonight: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday

Sunday: Patchy Fog then Partly Sunny
Patchy Fog then Partly Sunny
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday

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

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Sunny
Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Lo 69 °F Hi 86 °F Lo 69 °F Hi 80 °F Lo 54 °F Hi 80 °F Lo 58 °F Hi 82 °F Lo 61 °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

Lightning
Lightning's return stroke is hotter than the surface of the sun. Lightning is 50,000 degrees F. The sun is about 11,000 degrees F.

Today in Weather History

Weather History for September 12
 
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.