Rare !
On 20 March no stations in United States (Lower 48) managed to reach 80F/27C.
Highest was 79F in 4 stations of California and 1 station of Florida.
For a 20 March that's very unusual.
In mid winter it can surely happen,but that late It's not easy to see it.
https://nitter.moomoo.me/extremetemps/status/1638003245481115650#m