CapitalClimate

January 23 Update: The final daily low was 32° at midnight. The hourly data table and climate summary have been updated. 9 PM Update: T...

Temperature Precipitation Jan. 20 High Low Liquid Snow 2009 30 19 0 0 2010 44 35 0.03 T 2011 44 35 T T...

Jan. 26 Update: It's one thing when an openly political organization trashes the science, but a meteorologist who is a Fellow of the Am...

Al Roker gets a moment with President Obama on Inauguration Day:

2013 Update: See Inauguration Weather 2013 Update for more recent data. Jan. 23 Update: Added January daily chart and link to hourly o...

The occasional snow has now moved out of the Washington area, which received only a minimal accumulation. Total precipitation at the major ...

Noon update: BWI with 0.01" is the only one of the three major airports in the region to report measurable precipitation so far. Origi...

Temperatures have moderated significantly overnight, rising above freezing for the first time since Wednesday, when the high was 35°. Rada...

5:30 pm Update: This afternoon's model runs confirm the earlier trend away from late Sunday/early Monday precipitation, although it can...

As noted here this morning, one of the major U.S. weather models (known as GFS) has been suggesting the development of a storm system over...

After days of showing relatively dry conditions through Inauguration Day, the last couple of model forecasts have been hinting at a storm d...

Following on the heels of a very light dusting of snow around dawn this morning (all 3 major airports reported a trace), northwesterly win...

January 20 is now moving out of the extended forecast range, but the latest 6-10 day forecast, for Jan. 20-24, continues to call for sig...

The latest extended outlook from the Climate Prediction Center, for the 6-10 day period Jan. 19-23, continues to call for cold temperatur...

Once again, as they have ever since January 20 moved within the target date window, the latest 6-10 and 8-14 day extended range forecast...

With Inauguration Day 9 days away, it's still too early for a specific daily forecast, but a pattern is emerging for a cold pre-Inau...

Today's extended forecasts from the Climate Prediction Center continue to indicate cool and dry weather on average for the week lead...

If you're thinking about what to pack for a trip to the Inauguration in Washington, you might want to start looking for Click and Cla...

Today's extended outlook for the 8-14 day interval including Inauguration Day reverses a slight recent trend toward more seasonable t...

You may have noticed that the discussion of the Inauguration Day weather outlook, at least so far, has been expressed only in terms of ...