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Posted at 5:00 AM ET, 09/ 9/2010

Forecast: Much cooler and quite dry next 3 days

By David Streit

First chance of showers is Sunday

* BWI sets 90+ record | Early climate myths | Rapping weatherman *
* Outside now? Radar, temperatures & more: Weather Wall *

Today's Daily Digit
A somewhat subjective rating of the
day's weather, on a scale of 0 to 10.


Today is a winner but winds need to die down for a 10.
Get the 'Digit' on Twitter


Today: Mostly sunny and breezy. 76-80. | Tonight: Clear and cool. 52-58. | Tomorrow: Sunny and tranquil. 75-79. | A Look Ahead | Get Express Forecast by E-mail


By David Streit, CWG Meteorologist

I can say with little doubt that there won't be a 90+ day for the next 5 days and with a little luck none for the following 5 days as well. We seem to be settling into a pattern more conducive to pulling cooler air from Canada for a change. After yesterday's desert blast (afternoon humidity dropped to 15% with dew points in the low 30s!), I'm looking forward to a few Sunday showers. If it weren't for the moisture from the remnants of Tropical Storm Hermine, we probably would get zilch out of the incoming front. As it is, rains will be meager and plants need watering.

Today (Thursday): The cool air finally arrives in force and with a brisk wind from the northwest at 10 to 15 mph readings are going to go up a lot slower. Temperatures only reach the mid-70s by noon and upper 70s to 80 looks like the top of the ladder. Bright sun and minimal humidity are a plus. Confidence: High

Tonight: The breezes ease up and crystal clear skies make for a delightful evening with readings in the 70s, slipping to the 60s for you late night revelers. Overnight lows are downright cool in the 50s. Confidence: High

Keep reading for the forecast through Monday....

Tomorrow (Friday): This is the perfect day. Sunshine, light breezes and low humidity are only outdone by the highs holding in the 70s. No one could be blamed for an early office escape this afternoon. Confidence: High

Tomorrow Night: Another picture perfect night of starry skies and mild temperatures beckons. Gentle breezes might even evoke a chill by late evening as the 70s quickly give way to 60s and bottom out in the 50s even downtown (some upper 40s in the coldest suburbs?). Confidence: High


Saturday is no slouch but humidity climbs noticeably by afternoon and clouds are likely to begin encroaching on the afternoon sun as the remains of Tropical Storm Hermine approach from the west. Highs should only be in the upper 70s to lower 80s. Breezes from the south are light. Outdoor plans are not a problem for most as any showers won't appear until well after midnight and readings in the 70s are a treat. Confidence: Medium-High

Sunday clouds are expected to start dropping showers early in the morning with readings in the 60s. A rumble of thunder is possible but full-fledged storms are not likely. This would be a lower probability event if it weren't for the tropical moisture which pushes it up to 50-60%. Showers are likely to end by midday if not before and highs should still reach the upper 70s to lower 80s. Evening is much improved with drying and readings in the 70s. Confidence: Medium

Monday is another great day with readings in the upper 50s to mid 60s at daybreak, slowly winding up to the 70s by midday. Dry air and sunny skies push highs into the low-to-mid 80s by afternoon. Confidence: Medium-High

By David Streit  | September 9, 2010; 5:00 AM ET
Categories:  Forecasts  
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Next: Drought getting closer to D.C. area


Ahhhh- stepped outside and got a kiss from Fall :)

Posted by: Snowlover2 | September 9, 2010 7:24 AM | Report abuse

Gaston is gone. Earlier this morning it was still a yellow circle around some clouds on the hurricane chart with a "0% chance" of becoming a tropical storm within 48 hours.

Here's the history of Gaston: There's no way that this storm would have been named prior to the satellite era. A better measure is ACE which suggests that we could have a bit busier second half of the season.

Posted by: eric654 | September 9, 2010 8:47 AM | Report abuse

Any ideas how much rain to expect Sunday - drizzle or downpour, trace or inches? Or is it too early to tell? Of course that would be the one day of the week that I have a very important outdoor activity planned, but as long as the ground isn't saturated and sloppy-muddy, I should be okay, so I'm keeping my fingers crossed...

Posted by: jcats | September 9, 2010 8:48 AM | Report abuse

I wore a jacket and scarf on my walk to the metro this morning for the first time since April. Ahhhh. More weather just like this, please.

Posted by: maralenenok | September 9, 2010 8:50 AM | Report abuse

Most of the recent models have only generatred 0.1 to 0.25 inch of rain which is likely, worst case currently looks like up to a half inch but with our dryness that should soak up and save you from the "sloppy-muddy". The bulk of the rains look to be in the morning.

Posted by: davidstreit1 | September 9, 2010 10:13 AM | Report abuse

the lack of rain coupled with the breezy conditions have intensified what was already a horrible ragweed season. I'm sure I'm not the only one feeling miserable these days. Some rain would certainly help the situation.

As an aside, has there been a comparable stretch of dry weather during late August-early September in recent history? This year just seems unprecedented in so many ways...

Posted by: rhingo | September 9, 2010 11:09 AM | Report abuse

Okay, thanks - selfish as it is, considering that we need the rain, I'll hope for the .1 end of the scale, just enough for a little dampness but definitely no mud! :-)

Posted by: jcats | September 9, 2010 11:27 AM | Report abuse

The last really impressive dry spell this time of year was in 2005 when there were only a couple of less than 0.25" amounts in the last 10 days of August and only sprinkles through all of September and the first week of October! It came to a crashing halt on Oct. 7-8 with over 6 inches of rain.

Posted by: davidstreit1 | September 9, 2010 11:31 AM | Report abuse

Was that six inches in 2005 due to a tropical remnant?

Posted by: Bombo47jea | September 9, 2010 12:17 PM | Report abuse

Yes, Bombo47jea - I am pretty sure it was Tammy.

Posted by: Camden-CapitalWeatherGang | September 9, 2010 2:22 PM | Report abuse

thanks, David, for this info. Sure seems like a weird one!

Posted by: rhingo | September 10, 2010 1:28 PM | Report abuse

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