Washington, District of Columbia

Current Conditions

 
Temp: 51°
Dew Point: 35°
Humidity: 54%
Wind: NW 7 mph
Visibility: 10.0 miles
Pressure: 30.17 in. 0
Sky: Clear

 

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Almanac

Average High: 56°

Average Low: 39°

Record high/year: 79° (1942)

Record low/year: 20° (1901)

Sunrise: 6:56 AM

Sunset: 4:50 PM

Detailed History

Sun and Moon

Sunrise: 06:56 AM (EST)

Moon Rise: 10:26 AM (EST) 11 20

Sunset: 04:50 PM (EST)

Moon Set: 08:02 PM (EST) 11 20

Moon Phase

Today
Nov. 24
Dec. 02
Dec. 08
Dec. 16

 

Local Radar

Local Satellite


Air Pollution

Air Pollution Forecast for Washington

Current Air Quality: Good Pollutant: PM2.5
Current Air Quality: Good Pollutant: OZONE
Fri Air Quality: Good Pollutant: PM2.5
Sat Air Quality: Moderate Pollutant: PM2.5
Sun Air Quality: Good Pollutant: PM2.5
Mon Air Quality: Good Pollutant: PM2.5
Tue Air Quality: Moderate Pollutant: PM2.5
Wed Air Quality: Moderate Pollutant: PM2.5

Next 12 Hours

 
9  pm
12  am
3  am
6  am
9  am
Clear Clear
Clear Clear
Clear Clear
Partly Cloudy Partly Cloudy
Partly Cloudy Partly Cloudy
49°
47°
45°
45°
52°

 

Forecast data from the National Digital Forecast Database


5-Day Forecast

Saturday Partly Cloudy Hi 58° Lo 43° Partly Cloudy
Sunday Chance of Rain Hi 52° Lo 47° Chance of Rain
Monday Rain Hi 56° Lo 47° Rain
Tuesday Partly Cloudy Hi 61° Lo 47° Partly Cloudy
Wednesday Chance of Rain Hi 59° Lo 45° Chance of Rain

 

Forecast for District of Columbia

Updated: 9:14 PM EST on November 20, 2009

Overnight

Mostly clear. Lows around 40. Northwest winds around 5 mph.

 

Saturday

Mostly sunny. Highs in the upper 50s. Northwest winds around 5 mph.

 

Saturday Night

Partly cloudy in the evening...then becoming mostly cloudy. Lows in the lower 40s. North winds around 5 mph.

 

Sunday

Partly sunny in the morning...then becoming mostly cloudy. Highs in the lower 50s. Northeast winds around 5 mph.

 

Sunday Night

Cloudy. Rain likely...mainly after midnight. Lows in the mid 40s. Northeast winds around 5 mph. Chance of rain 60 percent.

 

Monday

Rain likely. Highs in the mid 50s. Chance of rain 60 percent.

 

Monday Night

Mostly cloudy with a 50 percent chance of showers. Lows in the mid 40s.

 

Tuesday

Partly sunny. Highs in the lower 60s.

 

Tuesday Night

Mostly cloudy with a 30 percent chance of rain. Lows in the upper 40s.

 

Wednesday

Mostly cloudy. Highs around 60.

 

Wednesday Night

Mostly cloudy. Lows in the mid 40s.

 

Thanksgiving Day

Partly sunny with a 40 percent chance of rain. Highs around 60.

 

Thursday Night

Mostly cloudy. Lows in the lower 40s.

 

Friday

Mostly sunny. Highs in the lower 50s.

 

 

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Eckington Pl, NE, Washington, DC

Updated: 9:25 PM EST

Temperature: 51.8 °F Dew Point: 38 °F Humidity: 60% Wind: NNW at 3.0 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: DCNet DC Municipal Building Washington DC, Washington, DC

Updated: 8:45 PM EST

Temperature: 51 °F Dew Point: 36 °F Humidity: 55% Wind: NNW at 8 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: DCNet Hoover Building Washington DC, Washington, DC

Updated: 8:45 PM EST

Temperature: 54 °F Dew Point: 36 °F Humidity: 51% Wind: NNW at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: DCNet Forrestal Building Washington DC, Washington, DC

Updated: 8:45 PM EST

Temperature: 53 °F Dew Point: 36 °F Humidity: 52% Wind: NNW at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: DCNet Natl. Academy of Sciences Washington DC, Washington, DC

Updated: 8:45 PM EST

Temperature: 54 °F Dew Point: 36 °F Humidity: 50% Wind: NW at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: NOS_PORTS Washington, DC, Washington, DC

Updated: 8:54 PM EST

Temperature: 53 °F Dew Point: - Humidity: - Wind: NNW at 7 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: DCNet National Arboretum Washington DC, Washington, DC

Updated: 8:45 PM EST

Temperature: 52 °F Dew Point: 36 °F Humidity: 54% Wind: North at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: VADOT Rt_66_@_Rosslyn, Arlington, VA

Updated: 8:40 PM EST

Temperature: 51 °F Dew Point: 36 °F Humidity: 55% Wind: SSE at 8 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: 16th St Heights, Washington, DC

Updated: 9:21 PM EST

Temperature: 56.0 °F Dew Point: 44 °F Humidity: 65% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: DCNet Navy Annex Washington DC, Washington, DC

Updated: 8:45 PM EST

Temperature: 51 °F Dew Point: 36 °F Humidity: 58% Wind: NNW at 6 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: Cherrydale, Arlington, VA

Updated: 9:25 PM EST

Temperature: 48.4 °F Dew Point: 39 °F Humidity: 70% Wind: NW at 1.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 48 °F Historical Graphs

Location: APRSWXNET Arlington VA US, Arlington, VA

Updated: 9:08 PM EST

Temperature: 48 °F Dew Point: 39 °F Humidity: 70% Wind: West at 1 mph Pressure: 30.14 in Hourly Precipitation: 0.00 in Windchill: 48 °F Historical Graphs

Location: Del Ray, Alexandria, VA

Updated: 9:14 PM EST

Temperature: 45.9 °F Dew Point: 40 °F Humidity: 80% Wind: Calm Pressure: 30.12 in Hourly Precipitation: - Windchill: 46 °F Historical Graphs

Location: DCNet NOAA Building Silver Spring MD, Silver Spring, MD

Updated: 8:45 PM EST

Temperature: 50 °F Dew Point: 35 °F Humidity: 56% Wind: NNW at 10 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 46 °F Historical Graphs

Location: Barcroft Neighborhood, Arlington, VA

Updated: 9:25 PM EST

Temperature: 44.4 °F Dew Point: 38 °F Humidity: 79% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 44 °F Historical Graphs

Location: DCNet Naval Research Laboratory Washington DC, Washington, DC

Updated: 8:45 PM EST

Temperature: 52 °F Dew Point: 35 °F Humidity: 53% Wind: NNW at 6 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: College Heights Estates, College Heights Estates, MD

Updated: 9:25 PM EST

Temperature: 45.2 °F Dew Point: 40 °F Humidity: 83% Wind: Calm Pressure: 30.10 in Hourly Precipitation: 0.00 in Windchill: 45 °F Historical Graphs

Location: Arlington, VA

Updated: 9:20 PM EST

Temperature: 46.0 °F Dew Point: 42 °F Humidity: 85% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 46 °F Historical Graphs

Location: Rosemont Park, Alexandria, VA

Updated: 9:26 PM EST

Temperature: 45.0 °F Dew Point: 40 °F Humidity: 81% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Windchill: 45 °F Historical Graphs

Location: Episcopal High School, Alexandria, VA

Updated: 9:25 PM EST

Temperature: 49.1 °F Dew Point: 36 °F Humidity: 61% Wind: NNW at 1.0 mph Pressure: 30.11 in Hourly Precipitation: 0.00 in Windchill: 49 °F Historical Graphs

Location: MDDOT I-495 @ Connecticut Ave, Bethesda, MD

Updated: 8:56 PM EST

Temperature: 51 °F Dew Point: 34 °F Humidity: 53% Wind: WNW at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: VADOT Seminary_Rd_@_I-395, Alexandria, VA

Updated: 8:39 PM EST

Temperature: 51 °F Dew Point: 36 °F Humidity: 57% Wind: NNW at 3 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: Seminary Ridge - St Stephens & St. Agnes Upper Campus, Alexandria, VA

Updated: 9:26 PM EST

Temperature: 50.0 °F Dew Point: 42 °F Humidity: 73% Wind: NW at 1.0 mph Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: Langley Fork Park, McLean, VA

Updated: 9:26 PM EST

Temperature: 43.7 °F Dew Point: 38 °F Humidity: 80% Wind: Calm Pressure: 30.17 in Hourly Precipitation: 0.00 in Windchill: 44 °F Historical Graphs

Location: Camp Springs, MD, Camp Springs, MD

Updated: 9:00 PM EST

Temperature: 50.0 °F Dew Point: 36 °F Humidity: 58% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Windchill: - Historical Graphs

Location: APRSWXNET McLean VA US, McLean, VA

Updated: 9:08 PM EST

Temperature: 44 °F Dew Point: 39 °F Humidity: 82% Wind: Calm Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 44 °F Historical Graphs

Location: Hollywood, College Park, MD

Updated: 9:26 PM EST

Temperature: 48.6 °F Dew Point: 39 °F Humidity: 69% Wind: North at 2.3 mph Pressure: 30.15 in Hourly Precipitation: 0.01 in Windchill: 49 °F Historical Graphs

Location: Kemp Mill/Silver Spring, Silver Spring, MD

Updated: 9:25 PM EST

Temperature: 46.4 °F Dew Point: 37 °F Humidity: 70% Wind: Calm Pressure: 30.09 in Hourly Precipitation: 0.00 in Windchill: 46 °F Historical Graphs

Location: APRSWXNET Westlawn VA US, Falls Church, VA

Updated: 9:06 PM EST

Temperature: 48 °F Dew Point: 38 °F Humidity: 68% Wind: NNW at 1 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: 48 °F Historical Graphs

Location: MDDOT I-495 at Am Lgn Br, Cabin John, MD

Updated: 8:47 PM EST

Temperature: 46 °F Dew Point: 37 °F Humidity: 70% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 46 °F Historical Graphs

Location: APRSWXNET Bethesda MD US, Washington, DC

Updated: 9:08 PM EST

Temperature: 46 °F Dew Point: 37 °F Humidity: 72% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Windchill: 46 °F Historical Graphs

Location: Backyard Weather, Falls Church, VA

Updated: 9:25 PM EST

Temperature: 46.1 °F Dew Point: 38 °F Humidity: 73% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 46 °F Historical Graphs

Location: High Point Homes, Beltsville, MD

Updated: 9:25 PM EST

Temperature: 48.5 °F Dew Point: 36 °F Humidity: 62% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 48 °F Historical Graphs

Location: Alexandria, VA

Updated: 9:25 PM EST

Temperature: 48.2 °F Dew Point: -19 °F Humidity: 5% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Windchill: 48 °F Historical Graphs

MSN Maps of:

Temperature Dew Point Humidity Wind Pressure Hourly Precipitation -

NWS Forecaster Discussion




053 
fxus61 klwx 210213 aaa 
afdlwx 


Area forecast discussion...updated 
National Weather Service Baltimore Maryland/Washington District of Columbia 
913 PM EST Friday Nov 20 2009 


Synopsis... 
high pressure will remain over the region through Saturday. High 
pressure will retreat to the north Sunday and low pressure will move 
up the eastern Seaboard Sunday night through Monday night...bringing 
another round of rain. High pressure will return Tuesday...but a 
cold front will pass through during the middle of next week. 


&& 


Near term /until 7 am Saturday morning/... 
a residual upper wave remains back to the northwest...sliding down through 
the upper Midwest tonight west/ little-no precipitation but a large mass of 
low clouds streaming from the shores of Lake Erie down into the 
central Appalachians. This will be about the only weather activity for the 
region into the early part of the weekend. Portions of this cloud 
bank will break-up and slide down across the northern Shenandoah Valley 
and Potomac Highlands through the overnight hours. Winds decreasing 
and after a long period of northwesterly winds this afternoon...conditions are 
relatively dry...so widespread fog development not expected 
/outside of sheltered valleys and other typical fog-prone areas 
toward the pre-dawn hrs/. The relatively dry conditions will also 
allow temperatures to slide down into M/u30s /l40s in the metropolitan areas and 
closer to the Bay/. 


&& 


Short term /7 am Saturday morning through 6 PM Saturday/... 
surface high will remain over the region Saturday bringing dry and 
seasonable conditions. Maximum temperatures will be in the middle to upper 50s 
across most locations. Mostly/partly sunny skies are expected with a 
scattered cumulus deck due to diurnal heating and some high clouds due to 
a southwest flow aloft. 


&& 


Long term /Saturday night through Friday/... 
large hipres hanging out across the NE/Great Lakes region Sat ngt-sun. Diff this 
cycle is the combo of surface high and 500 mb ridging...making it harder to 
dislodge. Thrfr..gdnc this cycle sloer than prvs cycles. GFS seems 
to be quicker...but it also seems to be affected by gridscale 
feedback...owing to shortwave phasing. Ggem/NAM in concert...suggesting 
precipitation will be centered on sun ngt-Mon. A weak low will then emerge off middle 
Atlantic CST Monday night. Will make appro changes to grids. One thing of note is 
that there/S no cold air around. Aftr making appro MOS temperature 
adjustments /neglecting the cooler maxt of wet GFS and siding warmer 
Sun night as clouds advect nwd/...maxt will be near normal but min-T warmer 
than normal. 


Should get a respite Tuesday before anthr storm affects County warning forecast area in the 
Wednesday-Thursday timeframe. Will need to monitor due to travel impacts. At this time... 
the warm trend continues as a cutoff 500 mb low develops west of the Mississippi. 


&& 


Aviation /01z Saturday through Wednesday/... 
high pressure will bring VFR conditions through Saturday. A 
scattered stratus deck /3-4 kft/ will continue to drift in from 
the northwest /but only in smaller portions from its larger mass - back 
across Ohio/western PA. This area of clouds will continue to move into 
the area toward Saturday morning and into the afternoon...drifting 
through and dissipating by later in the evening. Wind speeds will remain 
below 10 knots through this time. 


VFR through sun. Flgt restriction due to lopres Sun night-Monday night. 


&& 


Marine... 
northerly winds will continue to move over the waters overnight...and 
high pressure begins to move in from the west...though winds will 
be light west/ a minimal pressure gradient...so no weather concerns into the 
weekend. 


No flags expeceted through the weekend. Lopres affecting waters Monday. Winds may 
pick up in advc of low...W/ a east-northeasterly fetch. 


&& 


Lwx watches/warnings/advisories... 
District of Columbia...none. 
Maryland...none. 
Virginia...none. 
WV...none. 
Marine...none. 


&& 


$$ 
Update...gms 
previous discussion...bjl/hts 














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