Boise March 21 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of March 21.

March 21 All-Time Records 1911–2024
Highest temperature	78 °F	1928
Lowest temperature	20 °F	1913
Lowest daily high	39 °F	1938
Highest daily low	47 °F	2024
Most precipitation	0.43 inches	2011
Most snow	2.0 inches	1980

March 21 All-Time Records
1911–2024

Highest temperature

78 °F

20 °F

39 °F

Highest daily low

47 °F

0.43 inches

2.0 inches

March 21 Average Weather 1991–2020 ¹
Average high	56.8 °F
Average low	35.2 °F
Chance precipitation	31.6%
Chance snow	3.7%

March 21 Average Weather
1991–2020 ¹

Average high

56.8 °F

Average low

35.2 °F

Chance precipitation

31.6%

Chance snow

3.7%

Boise March 21 Weather by Year

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2024	63	47	0.00	0.0
2023	51	33	0.10	0.2
2022	53	33	0.00	0.0
2021	51	31	0.00	0.0
2020	59	36	0.00	0.0
2019	62	36	0.00	0.0
2018	62	42	0.15	0.0
2017	62	45	0.10	0.0
2016	60	41	0.36	0.0
2015	65	45	0.00	0.0
2014	49	24	0.00	0.0
2013	45	33	0.00	0.0
2012	66	44	0.00	0.0
2011	56	39	0.43	0.0
2010	62	38	0.07	0.0
2009	65	43	0.25	0.0
2008	47	31	0.00	0.0
2007	51	31	0.00	0.0
2006	52	35	0.00	0.0
2005	52	40	0.00	0.0
2004	71	41	0.00	0.0
2003	56	37	0.00	0.0
2002	69	35	0.00	0.0
2001	65	41	0.00	0.0
2000	54	25	0.00	0.0
1999	55	39	0.21	0.0
1998	64	40	0.00	0.0
1997	58	32	0.00	0.0
1996	63	38	0.00	0.0
1995	53	35	0.01	0.0
1994	57	39	0.00	0.0
1993	60	34	0.00	0.0
1992	62	28	0.00	0.0
1991	57	27	0.00	0.0
1990	63	32	0.00	0.0
1989	45	40	0.24	0.0
1988	54	36	0.24	0.0
1987	52	30	0.00	0.0
1986	67	41	0.00	0.0
1985	48	33	0.09	0.0
1984	55	37	0.09	0.0
1983	53	32	0.00	0.0
1982	47	24	0.00	0.0
1981	57	40	0.05	0.0
1980	45	32	0.28	2.0
1979	58	36	0.00	0.0
1978	68	39	0.00	0.0
1977	56	25	0.00	0.0
1976	56	27	0.00	0.0
1975	42	33	0.12	0.2
1974	53	26	0.00	0.0
1973	49	40	0.00	0.0
1972	64	41	0.00	0.0
1971	58	36	0.00	0.0
1970	53	34	0.00	0.0
1969	58	31	0.00	0.0
1968	61	29	0.00	0.0
1967	57	36	0.00	0.0
1966	42	25	0.00	0.0
1965	57	24	0.00	0.0
1964	47	32	0.12	0.0
1963	73	45	0.00	0.0
1962	47	27	0.00	0.0
1961	56	30	0.00	0.0
1960	70	38	0.00	0.0
1959	62	36	0.02	0.0
1958	57	45	0.05	0.0
1957	42	29	0.01	0.0
1956	61	43	0.00	0.0
1955	43	21	0.00	0.0
1954	49	29	0.00	0.0
1953	42	30	0.21	1.8
1952	42	23	0.00	0.0
1951	58	37	0.00	0.0
1950	54	32	0.00	0.0
1949	52	38	0.06	0.0
1948	47	28	0.00	0.0
1947	65	37	0.00	0.0
1946	54	34	0.00	0.0
1945	60	41	0.00	0.0
1944	46	23	0.00	0.0
1943	52	28	0.00	0.0
1942	58	32	0.00	0.0
1941	58	23	0.00	0.0
1940	68	33	0.00	0.0
1939	70	33	0.00	0.0
1938	39	21	0.02	0.0
1937	55	33	0.00	n/a
1936	56	29	0.00	0.0
1935	40	30	0.04	0.0
1934	71	38	0.00	n/a
1933	46	25	0.00	0.0
1932	n/a	31	0.02	n/a
1931	68	36	0.15	n/a
1930	65	38	0.01	0.0
1929	56	42	0.25	0.0
1928	78	37	0.00	0.0
1927	62	29	0.00	0.0
1926	62	32	0.00	0.0
1925	69	32	0.00	0.0
1924	47	28	0.00	0.0
1923	48	28	0.00	0.0
1922	66	37	0.00	0.0
1921	59	40	0.00	0.0
1920	62	38	0.01	0.0
1919	61	27	0.00	0.0
1918	66	31	0.00	0.0
1917	43	31	0.08	1.0
1916	54	29	0.11	0.0
1915	69	31	0.00	0.0
1914	57	30	0.00	0.0
1913	39	20	0.04	0.2
1912	51	20	0.00	0.0
1911	69	36	0.00	0.0

What's the all-time high for Boise on 3/21?

For the date of Mar 21, the highest temperature ever reached in Boise history is 78 °F which happened in 1928.

Highest Temperatures in Boise on March 21

Rank	Temperature	Year
1	78 °F	1928
2	73 °F	1963
3	71 °F	2004
3	71 °F	1934
5	70 °F	1939
5	70 °F	1960
7	69 °F	1915
7	69 °F	2002
7	69 °F	1911
7	69 °F	1925

What's the all-time low for Boise on 3/21?

For the date of Mar 21, the lowest temperature ever reached in Boise history is 20 °F which has happened 2 times, most recently in 1913.

Lowest Temperatures in Boise on March 21

Rank	Temperature	Year
1	20 °F	1913
1	20 °F	1912
3	21 °F	1955
3	21 °F	1938
5	23 °F	1941
5	23 °F	1944
5	23 °F	1952
8	24 °F	1982
8	24 °F	1965
8	24 °F	2014

Lowest High Temperatures in Boise on March 21

Rank	Temperature	Year
1	39 °F	1913
1	39 °F	1938
3	40 °F	1935
4	42 °F	1975
4	42 °F	1953
4	42 °F	1966
4	42 °F	1957
4	42 °F	1952
9	43 °F	1917
9	43 °F	1955

What's the most it has ever rained in Boise on 3/21?

For the date of Mar 21, the most precipitation ever recorded in Boise history is 0.43 inches which happened in 2011.

All-Time Most Precipitation in Boise on March 21

Rank	Precipitation	Year
1	0.43 inches	2011
2	0.36 inches	2016
3	0.28 inches	1980
4	0.25 inches	2009
4	0.25 inches	1929
6	0.24 inches	1988
6	0.24 inches	1989
8	0.21 inches	1953
8	0.21 inches	1999
10	0.15 inches	2018
10	0.15 inches	1931

All-Time Most Snow in Boise on March 21

Rank	Precipitation	Year
1	2.0 inches	1980
2	1.8 inches	1953
3	1.0 inches	1917
4	0.2 inches	1913
4	0.2 inches	1975
4	0.2 inches	2023

Weather Station Details

Years	Station	Coordinates
1940–2024		location
1911–1939	Meridian 1 W	location