« Crows work together in winter scarcity | Main | Weekend snow forecast still uncertain »

December 14, 2009

A (mostly) sunny week will get colder

Looks like we will have a very pleasant and unseasonably mild start to this week, with a high near 50 degrees today and in the mid-50s on Tuesday. But a cold front is due to pass by late on Tuesday, dropping daytime temperatures into the low 40s by Wednesday - about 5 degrees below normal for BWI at this time of year. The lows will sink into the near-normal mid-20s.

The good news is that skies will remain sunny for pretty nearly the entire week, if the forecast holds up. The only smudge on the forecast is the "mostly cloudy" forecast for Tuesday as the front passes. But there is no rain at all expected from the frontal passage, or right through the weekend.

And that will be a nice break, indeed. Baltimore-Washington International Thurgood Marshall Airport has recorded 51.86 inches of precipitation so far this year. That is nearly 10 inches of surplus beyond the 41.94-inch average for an entire year. (The surplus is the dark green area in the chart). It is very close to becoming the fourth-wettest year in the past 30 years at BWI.NOAA/NWS

2003:  62.66 inches

1979:  58.98 inches

1996:  58.31 inches

1989:  51.88 inches

2009 (to date):  51.86 inches

Average (full year): 41.94 inches

Average (to Dec. 14): 39.96 inches

Posted by Frank Roylance at 10:47 AM | | Comments (1)
Categories: Forecasts


Great report as always!

Post a comment

All comments must be approved by the blog author. Please do not resubmit comments if they do not immediately appear. You are not required to use your full name when posting, but you should use a real e-mail address. Comments may be republished in print, but we will not publish your e-mail address. Our full Terms of Service are available here.

Verification (needed to reduce spam):

About Frank Roylance
This site is the Maryland Weather archive. The current Maryland Weather blog can be found here.
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1992, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page. Frank also answers readers’ weather queries for the newspaper and the blog. Frank Roylance retired in October 2011. Maryland Weather is now being updated by members of The Baltimore Sun staff

Sign up for FREE weather alerts*
Get free Baltimore Sun mobile alerts
Sign up for weather text alerts

Returning user? Update preferences.
Sign up for more Sun text alerts
*Standard message and data rates apply. Click here for Frequently Asked Questions.
Maryland Weather Center

Area Weather Stations
Resources and Sun coverage
• Weather news

• Readers' photos

• Data from the The Sun's weather station

• 2011 stargazers' calendar

• Become a backyard astronomer in five simple steps

• Baltimore Weather Archive
Daily airport weather data for Baltimore from 1948 to today

• National Weather Service:
Sterling Forecast Office

• Capital Weather Gang:
Washington Post weather blog

• CoCoRaHS:
Community Collaborative Rain, Hail and Snow Network. Local observations by volunteers

• Weather Bug:
Webcams across the state

• National Data Buoy Center:
Weather and ocean data from bay and ocean buoys

• U.S. Drought Monitor:
Weekly maps of drought conditions in the U.S.

• USGS Earthquake Hazards Program:
Real-time data on earthquakes

• Water data:
From the USGS, Maryland

• National Hurricane Center

• Air Now:
Government site for air quality information

• NWS Climate Prediction Center:
Long-term and seasonal forecasts

• U.S. Climate at a Glance:
NOAA interactive site for past climate data, national, state and city

• Clear Sky Clock:
Clear sky alerts for stargazers


• Hubblesite:
Home page for Hubble Space Telescope

• Heavens Above:
Everything for the backyard stargazer, tailored to your location

• NASA Eclipse Home Page:
Centuries of eclipse predictions

• Cruise Critic: Hurricane Zone:
Check to see how hurricanes may affect your cruise schedule

• Warming World:
NASA explains the science of climate change with articles, videos, “data visualizations,” and space-based imagery.

• What on Earth:
NASA blog on current research at the space agency.
Most Recent Comments
Blog updates
Recent updates to news blogs
 Subscribe to this feed
Charm City Current
Stay connected