On this date in 2020, a calendar day record 2.88 inches of rain fell.
“A narrow corridor of extremely heavy rain developed over the immediate Washington region mid-Thursday afternoon, resulting in widespread flash flooding,” I wrote after the rain ended. “Streams rose up to 8 feet in a single hour, and some roads were engulfed in floodwaters and closed. Dozens of cars were stranded in high water and required rescue. The heaviest rain, totaling 2 to 6 inches, focused in southern Montgomery County and between Alexandria and north-central Prince George’s County, including the northeast portion of the District.”
Read more: How the flood unfolded and why it was so hard to forecast
And on this date in 1985, it hit 90 degrees or higher for the eighth day in a row, the longest streak on record in September and so late in the year.
Here are other notables from this date:
- Average high: 83
- Average low: 66
- Record high: 98 (1983)
- Record low: 44 (1883)
- Record rainfall: 2.88 inches (2020)
