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

WASHINGTON DC METRO AREA FORECAST DISCUSSION
The high-resolution model signal for heavier rainfall amounts has increased for Saturday. If any of these more intense showers impact the I-95 urban corridor, a threat for some flash flooding cannot be ruled out. The Weather Prediction Center has upgraded to a Slight Risk for excessive rainfall.

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: @ 11-Sep-2026 4:50am - next update at 5:00am  
Temperature Summary Outlook
Currently: 72.8, Max: 78.8, Min: 72.8 72.8°F
Colder 1.7°F than last hour.

Comfortable

Feels like: 73°F

24-hr difference
0°F 
  Today Yesterday
High: 78.8°F
12:00am 		89.2°F
3:53pm
Low: 72.8°F
4:50am 		72.3°F
7:25am
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:  72.8°F
Coldest Wind Chill
Today:  72.8°F
at 4:50am
Yesterday:  72.3°F
at 7:25am
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: 2.3 Degree Days
Yesterday: 14.7 Degree Days
Heat Index
Now:  72.9°F
Warmest Heat Index
Today:  78.8°F
at 00:00
Yesterday:  100.1°F
at 15:43
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
Light rain, Overcast Light rain, Overcast
Wind from NNW NNW
0
Gust:
 1 mph
0 Bft - Calm
Today: 4 mph 12:00am
Gust Month: 20 mph September 3
Rain Today:  0.05 in
Rain Rate /hr  0.05 in
Rain Last Hour:  0.03 in
Rain 24hrs:  0.05 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:  1.1 miles
Yesterday:  19.9 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: 0.05 in
Rain Rate (/hr): 0.06 in
Rain Yesterday: 0.00 in
This Month: 1.27 in
Season Total: 21.58 in
0 day 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: Rain Showers Likely
Rain Showers Likely
Friday

Friday: Chance Rain Showers then Mostly Cloudy
Chance Rain Showers then Mostly Cloudy
Friday
Night
Friday Night: Mostly Cloudy then Chance Showers And Thunderstorms
Mostly Cloudy then Chance Showers And T-Storms
Lo 70 °F Hi 81 °F Lo 67 °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: 92 % Increased 3.0% since last hour.
Dew Point: 70.3°F Decreased 0.3°F since last hour.
Barometer: 29.94 inHg  
Baro Trend: Rising 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: 6:46am
Sunset: 7:25pm
Moonrise: 7:16am
Moonset: 7:33pm

Day Length:  12:36
Dawn:  06:21
Dusk:  19:51
Daylight Length:  13:30
 There will be 2min 30s less daylight tomorrow

Cloud Base

cloudbase
CB AGL: 559 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
49
Good

Sunlight

12 hrs 39 min 27 sec
of Sunlight Today
Which is
2 min 29 sec Shorter
Than Yesterday
(Noon) graph (Midnight)
 Legend

Moon


New Moon
New Moon, Moon at 0 days in cycle
0% %
Illuminated
 NWS Weather Forecast  - Outlook: Overnight & Friday
Overnight

Overnight: Rain Showers Likely
Rain Showers Likely

Lo 70 °F		 NWS forecast: Rain showers likely. Mostly cloudy, with a low around 70. Northwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Davis VP+ forecast: Increasing clouds with little temperature change.		   Friday

Friday: Chance Rain Showers then Mostly Cloudy
Chance Rain Showers then Mostly Cloudy

Hi 81 °F		 NWS forecast: A chance of rain showers before noon. Mostly cloudy, with a high near 81. North wind around 6 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 Monday Night - Last Update: Fri, 11-Sep-2026 2:23am EDT
Overnight

Overnight: Rain Showers Likely
Rain Showers Likely
Friday

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

Saturday: Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Chance Showers And T-Storms then Slight Chance Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms then Showers And Thunderstorms
Chance Showers And T-Storms then Showers And T-Storms
Sunday

Sunday: Chance Rain Showers
Chance Rain Showers
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday

Monday: Mostly Sunny
Mostly Sunny
Monday
Night
Monday Night: Partly Cloudy
Partly Cloudy
Lo 70 °F Hi 81 °F Lo 67 °F Hi 82 °F Lo 68 °F Hi 86 °F Lo 68 °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

Humidity
Humidity is the amount of water vapor in the air. The term "humidity" refers to relative humidity. Relative humidity is defined as the amount of water vapor in a sample of air compared to the maximum amount of water vapor the air can hold at any specific temperature in a form of 0 to 100%. Relative humidity is important in forecasting weather. Humidity indicates the likelihood of precipitation, dew, or fog. High humidity makes people feel hotter outside in the summer because it reduces the effectiveness of sweating to cool the body by preventing the evaporation of perspiration from the skin.

Today in Weather History

Weather History for September 11
 
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.