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Weather news
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Readers' photos
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Data from the The Sun's weather station
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2011 stargazers' calendar
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Become a backyard astronomer in five simple steps
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Baltimore Weather Archive
Daily airport weather data for Baltimore from 1948 to today
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National Weather Service:
Sterling Forecast Office
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Capital Weather Gang:
Washington Post weather blog
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CoCoRaHS:
Community Collaborative Rain, Hail and Snow Network. Local observations by volunteers
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Weather Bug:
Webcams across the state
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National Data Buoy Center:
Weather and ocean data from bay and ocean buoys
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U.S. Drought Monitor:
Weekly maps of drought conditions in the U.S.
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USGS Earthquake Hazards Program:
Real-time data on earthquakes
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Water data:
From the USGS, Maryland
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National Hurricane Center
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Air Now:
Government site for air quality information
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NWS Climate Prediction Center:
Long-term and seasonal forecasts
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U.S. Climate at a Glance:
NOAA interactive site for past climate data, national, state and city
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Clear Sky Clock:
Clear sky alerts for stargazers
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NASA TV:
Watch NASA TV
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Hubblesite:
Home page for Hubble Space Telescope
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Heavens Above:
Everything for the backyard stargazer, tailored to your location
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NASA Eclipse Home Page:
Centuries of eclipse predictions
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Cruise Critic: Hurricane Zone:
Check to see how hurricanes may affect your cruise schedule
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Warming World:
NASA explains the science of climate change with articles, videos, “data visualizations,” and space-based imagery.
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What on Earth:
NASA blog on current research at the space agency.
Notice how dark it is when your morning alarm goes off? Or how dim the light is for your evening commute? 
Comments
Finally an explanation for the dicrepency for sunrise and sunset times at equinox. One more of life's little mysteries solved. Thanks FR.
I once heard that air temperature readings should be taken at 2 ft. above the ground. Is that the standard?
Happy birthday to John, the sidewalk astronomer, Dobson on the 14th.! Full discloser, I love the 8" Dobsonian I have.
FR: The National Weather Service recommends the sensor be 4 to 6 feet above a natural surface (such as grass), shaded from direct sunlight, at least 100 feet from pavement and no closer than four times the height of nearby buildings. The WeatherDeck fails on most counts. But when you live on 0.04 acre, you don't have many options. On the telescope, I am presently coveting a Dob myself. Maybe when I retire...
Posted by: Broe | September 12, 2010 2:13 PM