Boise October 31 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of October 31 (Halloween).

October 31 All-Time Records 1911–2024
Highest temperature	74 °F	2012
Lowest temperature	13 °F	2002
Lowest daily high	34 °F	2002
Highest daily low	52 °F	2008
Most precipitation	0.37 inches	1933
Most snow	1.0 inches	1971

October 31 All-Time Records
1911–2024

Highest temperature

74 °F

13 °F

34 °F

Highest daily low

52 °F

0.37 inches

1.0 inches

October 31 Average Weather 1991–2020 ¹
Average high	56.9 °F
Average low	36.1 °F
Chance precipitation	26.1%
Chance snow	1.8%

October 31 Average Weather
1991–2020 ¹

Average high

56.9 °F

Average low

36.1 °F

Chance precipitation

26.1%

Chance snow

1.8%

Boise October 31 Weather by Year

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	56	29	0.00	0.0
2022	69	38	0.00	0.0
2021	56	40	0.00	0.0
2020	58	31	0.00	0.0
2019	43	21	0.00	0.0
2018	49	37	0.01	0.0
2017	57	29	0.00	0.0
2016	56	43	0.01	0.0
2015	64	48	0.00	0.0
2014	65	47	0.00	0.0
2013	54	34	0.02	0.0
2012	74	49	0.00	0.0
2011	58	37	0.03	0.0
2010	60	48	0.11	0.0
2009	62	37	0.00	0.0
2008	72	52	0.00	0.0
2007	59	33	0.00	0.0
2006	43	18	0.00	0.0
2005	60	40	0.01	0.0
2004	48	31	0.00	0.0
2003	42	23	0.00	0.0
2002	34	13	0.00	0.0
2001	61	43	0.00	0.0
2000	52	33	0.00	0.0
1999	60	33	0.00	0.0
1998	59	31	0.00	0.0
1997	60	38	0.00	0.0
1996	54	34	0.00	0.0
1995	48	25	0.00	0.0
1994	57	35	0.00	0.0
1993	54	33	0.00	0.0
1992	56	38	0.26	0.0
1991	38	22	0.00	0.0
1990	62	41	0.06	0.0
1989	52	26	0.00	0.0
1988	73	39	0.00	0.0
1987	69	51	0.00	0.0
1986	55	34	0.00	0.0
1985	49	27	0.00	0.0
1984	43	24	0.00	0.0
1983	67	48	0.02	0.0
1982	52	30	0.00	0.0
1981	61	37	0.00	0.0
1980	62	28	0.00	0.0
1979	48	31	0.00	0.0
1978	55	21	0.00	0.0
1977	51	37	0.00	0.0
1976	55	36	0.00	0.0
1975	52	32	0.00	0.0
1974	50	46	0.00	0.0
1973	59	45	0.14	0.0
1972	47	20	0.00	0.0
1971	42	30	0.12	1.0
1970	58	35	0.00	0.0
1969	56	32	0.00	0.0
1968	58	42	0.00	0.0
1967	67	35	0.00	0.0
1966	65	35	0.00	0.0
1965	66	38	0.00	0.0
1964	61	35	0.00	0.0
1963	54	30	0.00	0.0
1962	64	38	0.00	0.0
1961	50	30	0.00	0.0
1960	59	35	0.00	0.0
1959	55	25	0.00	0.0
1958	67	37	0.00	0.0
1957	53	33	0.00	0.0
1956	43	29	0.00	0.0
1955	42	27	0.00	0.0
1954	58	33	0.00	0.0
1953	69	40	0.00	0.0
1952	55	35	0.00	0.0
1951	45	23	0.00	0.0
1950	52	37	0.00	0.0
1949	58	34	0.00	0.0
1948	48	43	0.27	0.0
1947	69	44	0.00	0.0
1946	50	26	0.03	0.0
1945	50	41	0.05	0.0
1944	63	45	0.26	0.0
1943	46	27	0.00	0.0
1942	49	39	0.14	0.0
1941	50	33	0.01	0.0
1940	58	39	0.22	0.0
1939	58	32	0.00	0.0
1938	56	45	0.05	0.0
1937	n/a	n/a	0.00	0.0
1936	57	42	0.00	0.0
1935	38	21	0.00	0.0
1934	66	39	0.00	0.0
1933	56	40	0.37	0.0
1932	53	25	0.00	0.0
1931	68	35	0.00	n/a
1930	65	26	0.00	n/a
1929	57	25	0.00	0.0
1928	50	40	0.22	0.0
1927	45	25	0.03	0.0
1926	61	21	0.00	0.0
1925	57	26	0.00	0.0
1924	63	42	0.00	0.0
1923	57	29	0.00	0.0
1922	56	39	0.15	0.0
1921	67	36	0.00	0.0
1920	48	29	0.00	0.0
1919	38	23	0.15	1.0
1918	60	34	0.00	0.0
1917	64	21	0.00	0.0
1916	61	33	0.00	0.0
1915	70	36	0.00	0.0
1914	69	41	0.00	0.0
1913	57	33	0.00	0.0
1912	53	24	0.00	0.0
1911	63	33	0.00	0.0

What's the all-time high for Boise on 10/31?

For the date of Oct 31, the highest temperature ever reached in Boise history is 74 °F which happened in 2012.

Highest Temperatures in Boise on October 31

Rank	Temperature	Year
1	74 °F	2012
2	73 °F	1988
3	72 °F	2008
4	70 °F	1915
5	69 °F	1914
5	69 °F	2022
5	69 °F	1947
5	69 °F	1987
5	69 °F	1953
10	68 °F	1931

What's the all-time low for Boise on 10/31?

For the date of Oct 31, the lowest temperature ever reached in Boise history is 13 °F which happened in 2002.

Lowest Temperatures in Boise on October 31

Rank	Temperature	Year
1	13 °F	2002
2	18 °F	2006
3	20 °F	1972
4	21 °F	1926
4	21 °F	1935
4	21 °F	1978
4	21 °F	2019
4	21 °F	1917
9	22 °F	1991
10	23 °F	1951
10	23 °F	1919
10	23 °F	2003

Lowest High Temperatures in Boise on October 31

Rank	Temperature	Year
1	34 °F	2002
2	38 °F	1935
2	38 °F	1919
2	38 °F	1991
5	42 °F	1971
5	42 °F	2003
5	42 °F	1955
8	43 °F	2019
8	43 °F	1956
8	43 °F	1984
8	43 °F	2006

What's the most it has ever rained in Boise on 10/31?

For the date of Oct 31, the most precipitation ever recorded in Boise history is 0.37 inches which happened in 1933.

All-Time Most Precipitation in Boise on October 31

Rank	Precipitation	Year
1	0.37 inches	1933
2	0.27 inches	1948
3	0.26 inches	1992
3	0.26 inches	1944
5	0.22 inches	1928
5	0.22 inches	1940
7	0.15 inches	1922
7	0.15 inches	1919
9	0.14 inches	1942
9	0.14 inches	1973

All-Time Most Snow in Boise on October 31

Rank	Precipitation	Year
1	1.0 inches	1919
1	1.0 inches	1971

Weather Station Details

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