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DC weather history for March 12

A day of dramatic swings, from record early-season heat in 1990 to a stunning temperature plunge and late snow in 2026.

On this date in 1990, D.C. set a calendar-day record high of 89 degrees, also its highest temperature observed so early in the year. It was the first of three straight record-warm days: Records of 87 and 86 were set on March 13 and 14, respectively. It remained very warm the next two days, as well, with highs of 81.

And on this date in 2026, the temperature dropped 53 degrees in 24 hours in D.C., from a record high of 86 the previous day to 33 degrees. This marked the biggest 24-hour swing since at least the 1940s. A coating to 2 inches of snow fell throughout the region, after a high of 77 degrees earlier in the day (just after midnight). The previous day’s high of 86 was the warmest on record before an instance of measurable snow.

Here are other notables for the day:

Mar 11 Full calendar Mar 13
Jason Samenow

Jason Samenow

Chief meteorologist, journalist, and Capital Weather founder. AMS Certified Digital Meteorologist and D.C.-area native.

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