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

WASHINGTON DC METRO AREA FORECAST DISCUSSION
Earlier showers and thunderstorms have mostly weakened given loss of diurnal heating.

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: @ 01-Sep-2026 12:00am - next update at 12:10am  
Temperature Summary Outlook
Currently: 75.6, Max: 75.6, Min: 75.6 75.6°F
Colder 1.2°F than last hour.

Comfortable

Feels like: 76°F

24-hr difference
4.2°FWarmer 4.2°F than yesterday at this time.
  Today Yesterday
High: 75.6°F
12:00am 		88.4°F
1:09pm
Low: 75.6°F
12:00am 		68.8°F
6:34am
High & Low September 2026
High:  75.6°F
01 September at 12:00 AM
Low:  75.6°F
01 September at 12:00 AM
Max Min:  --°F
---
Min Max:  --°F
---
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:  75.6°F
Coldest Wind Chill
Today:  75.6°F
at 12:00am
Yesterday:  68.8°F
at 6:34am
September 2026  75.6°F
01 September at 12:00 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: 0.0 Degree Days
Yesterday: 12.7 Degree Days
Heat Index
Now:  75.6°F
Warmest Heat Index
Today:  75.6°F
at 00:00
Yesterday:  103.4°F
at 13:07
September 2026  75.6°F
01 September at 12:00 AM
2026  128.9°F
04 July at 3:04 PM
Station Record September  116.0°F
at 13:37 on 07 September 2023
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
Overcast Overcast
Calm -
0
Gust:
 0 mph
0 Bft - Calm
Today: 0 mph 12:00am
Gust Month: 0 mph September 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 September 2026
High Gust:  0 mph
01 September at 12:00 AM
High Average:  0 mph
01 September at 12:00 AM
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:  6.0 miles
Highest Wind Run
September 2026  0.0 miles
01 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: 0.00 in
Season Total: 20.31 in
2 days since last rain.

Days Since Last Dry Day: 0
Station High September 2026
High Day:  0.00 in
01 September
High Hour:  0.00 in
01 September at 12:00 AM
High Rain Rate /hr:  0.00 in
01 September at 12:00 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:  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: Mostly Cloudy
Mostly Cloudy
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Lo 72 °F Hi 95 °F Lo 75 °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 %  
Dew Point: 73.4°F Decreased 0.8°F since last hour.
Barometer: 30.07 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: 6:37am
Sunset: 7:41pm
Moonset: 11:26am
Moonrise: 9:44pm

Day Length:  13:01
Dawn:  06:11
Dusk:  20:07
Daylight Length:  13:55
 There will be 2min 26s less daylight tomorrow

Cloud Base

cloudbase
CB AGL: 492 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
77
Moderate

Sunlight

13 hrs 3 min 59 sec
of Sunlight Today
Which is
2 min 26 sec Shorter
Than Yesterday
(Noon) graph (Midnight)
 Legend

Moon


Waning Gibbous
Waning Gibbous, Moon at 18 days in cycle
83% %
Illuminated
 NWS Weather Forecast  - Outlook: Tonight & Tuesday
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 72 °F		 NWS forecast: Mostly cloudy, with a low around 72. Southwest wind around 1 mph. New rainfall amounts less than a tenth of an inch possible.
Davis VP+ forecast: Increasing clouds with little temperature change. Precipitation possible within 24 to 48 hours.		   Tuesday

Tuesday: Mostly Sunny
Mostly Sunny

Hi 95 °F		 NWS forecast: Mostly sunny, with a high near 95. Heat index values as high as 100. West wind 1 to 6 mph.
 NWS Weather Forecast  - Five Day Outlook for Tonight through Friday Night - Last Update: Mon, 31-Aug-2026 10:52pm EDT
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Wednesday

Wednesday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Thursday

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

Friday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Lo 72 °F Hi 95 °F Lo 75 °F Hi 95 °F Lo 74 °F Hi 96 °F Lo 74 °F Hi 90 °F Lo 69 °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

Extremes
By average annual rainfall, the wettest place in the world is Mawslynram, in Meghalaya State, India with 467 1/2 inches per annum.

Today in Weather History

Weather History for September 1
 
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.