Key West March Weather

Typical Key West March Weather 1991–2020
Average daily high	79.0 °F
Average daily low	68.8 °F
Average monthly precipitation	1.5 inches

Key West March Weather Records 1948–2023
Highest temperature	88 °F	March 28, 1994
Lowest temperature	47 °F	March 3, 1986
Highest daily low	79 °F	March 31, 2020
Lowest daily high	57 °F	March 3, 1980
Hottest average temperature	3.9 °F above average	1948
Coldest average temperature	-6.4 °F below average	2010
Most daily precipitation	5.3 inches	March 6, 1987
Most monthly precipitation	9.7 inches	1987

Day	Average (°F)		Record (°F)
	High	Low	High	Low
March 1	77.8	67.7	84	51
March 2	77.9	67.8	86	53
March 3	78.0	67.9	85	47
March 4	78.2	68.1	86	49
March 5	78.3	68.2	86	53
March 6	78.4	68.3	86	52
March 7	78.4	68.4	84	57
March 8	78.4	68.3	86	55
March 9	78.5	68.3	85	54
March 10	78.5	68.4	86	56
March 11	78.5	68.4	87	54
March 12	78.6	68.4	86	56
March 13	78.6	68.4	85	55
March 14	78.7	68.5	86	54
March 15	78.8	68.6	86	53
March 16	78.9	68.7	86	53
March 17	79.0	68.9	85	53
March 18	79.1	69.0	85	56
March 19	79.3	69.1	86	57
March 20	79.4	69.3	86	56
March 21	79.5	69.5	85	56
March 22	79.7	69.6	87	53
March 23	79.8	69.8	87	53
March 24	79.9	70.0	88	57
March 25	80.0	70.2	85	59
March 26	80.2	70.3	86	59
March 27	80.3	70.5	87	57
March 28	80.4	70.6	88	58
March 29	80.6	70.8	87	60
March 30	80.7	70.9	86	62
March 31	80.8	71.1	87	56