October is nearly finished and temperatures out at BWI-Marshall Airport are running more than 2 degrees above the average for the month. And there's cooler weather ahead this weekend, so that number may not hold. But it is likely to wind up as the second-most-nearly-average month so far in 2010.
Take a look at these numbers (departures from the 30-year averages for each month) for a sense of how unusually warm it's been since we got past February's cold and snow: