Ian

BWI should get 2nd as 1979 finished a bit mild. Dulles is close but seems it'll miss 1979 by a smidge for number 2? DC is like top 15.

7 day avg of 19 ending yesterday was the coldest week for DC since Jan 1994, which bottomed at 13.8.

DCA 20/10 today beats yesterday's coldest Feb day since 1996 avg.

Plop these in here. Looks like final numbers. Already down to 13 at DCA.. today may play too I guess. Euro/GFS hinting subzero late week.. with snow it might be believable even into DC?

I dunno. It seems we are in the golden age of HECS right now. Persistence until none for a while.

I've been looking thru pics from then and the next and it doesn't seem real. But it probably could have been better with a little colder temps. Next time.

It does hurt a little more every year later. But the HECS cycle should be nearing completion.. unless we go back into the old HECS cycle then see ya in 20 years.

This is a weather board yo.

Dec tied for the warmest monthly low on record at DCA/DC old. Let's hope this is not a useful metric as the last two rolled forward are no bueno.

Counting today, 5 of 6 days to start September were 90+ at DC. Hasn't happened since 1980 when all 6 days reached that mark. We may not torch as often anymore but we still torch well.

Two recent climate pieces for CWG. The DC one isn't terribly notable to date other than last few yrs. Dulles Airport just recorded its longest “heart of summer” cool streak on record http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2014/08/18/dulles-airport-just-recorded-its-longest-heart-of-summer-cool-streak-on-record/ Summer 2014 in D.C.: 90-degree days running 40 percent below normal http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2014/08/15/summer-2014-in-d-c-90-degree-days-running-40-percent-below-normal/

If DCA makes it to freezing tonight it will be the latest since Apr 21 in 1956.

NWS just posted that it's close and we need to get past the low from this morning but numbers from the F6 say it's there. Maybe the F6 is wrong. Definitely an impressive month. I wish IAD had a longer record ... or DCA wasn't a heat island of doom. IAD outpaced DCA with records like a million to one this winter.

Really interesting. Dulles appears to have finished with the coldest March on record (since 1963) with 37.4. Edged out 1984 by 0.1 by my calcs.

Dulles got another record low, 15.

IAD ticked above freezing yesterday (mar 25) but still the coldest high so late in the year at 33.

Too bad Dulles record is so short. Everything there feels like a gimme.

Time to have the sads again I was just leaving work around now four years ago.. not to return for a week.

That makes sense as NWS does 12z for things like snow depth. So then I guess the other question/assumption is that lows are as reported for the day shown? And same for snow depth? There is probably a guide I should track down.

Anyone know this answer? In the charts below I ran highs in July 2011 against eachother for DCA and two local coops. The initial way was just putting the dates next to eachother but it looks like it fits better assuming the co-ops are reporting PRIOR days highs rather than the date they match with. Matt mentioned something similar in txt about snow but I guess my question is can it just be assumed it's always reporting for the day prior rather than the day of on a co-op? Here's the two examples. Second with the shift.

Yeah, I didn't get that part. Last time I used it was to pull EWR data to look at super bowl snow odds -- a post still buried for the future maybe. But I asked for english and it still gave me mm etc which I had to convert. They matched up with F6s though at least after. I tried English just now and it seemed to work though hopefully no conversion issues.

Thanks. Probably should have known that. Getting handed the data for the local airports made me lazy. Have used the new site a bit before.. not sure I saw it before revamp.

I've probably asked this before and lost the link but anyone know where you can download co-op data? Curious because today the Post used a graphic based on the Arboretum and the numbers were considerably different than DCA. Makes me interested in running some comparisons.

Guess this is as good a place as any.. rehash of old news but most of our stories were temp/precip extremes in 2013: Top 5 weather stories of the year around here http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2013/12/27/top-five-d-c-area-weather-stories-of-2013/

Yeah this stuff is painful at this point. It might be imaginary.