Boise - Lowest Temperature for Each Year
Here's where you'll find answers to your questions about the lowest temperatures and coldest days in Boise, Idaho. For instance: When was the last time Boise got colder than -20 °F? How cold did Boise get in 2019?
This page gives the lowest temperature for each year in Boise and the date that it happened. A date with a plus sign beside it means the lowest temperature also occurred on at least one other day earlier that year.
These records go back to 1911, with just a few years missing data. The lowest temperature measured during that time was -28 degrees Fahrenheit (-33 Celsius) on January 22, 1930.
Since 1940 the temperature extremes were observed at Boise Airport. Before then, the weather station was on the outskirts of Boise.
| Min °F | Date | Min °C |
|---|---|---|
| 9 | January 30, 2023 | -13 |
| -3 | January 01, 2022 | -19 |
| 9 | December 31, 2021 | -13 |
| 16 | January 15, 2020 | -9 |
| 10 | February 22, 2019 | -12 |
| 9 | February 20, 2018 | -13 |
| -11 | January 06, 2017 | -24 |
| 0 | December 18, 2016 | -18 |
| 6 | January 01, 2015 | -14 |
| 1 | November 15, 2014 | -17 |
| -7 | December 09, 2013 | -22 |
| 13 | December 31, 2012 + | -11 |
| 9 | January 01, 2011 | -13 |
| 7 | November 25, 2010 | -14 |
| Min °F | Date | Min °C |
|---|---|---|
| 5 | January 24, 2008 | -15 |
| 7 | January 13, 2007 + | -14 |
| 10 | December 01, 2006 | -12 |
| 7 | December 08, 2005 | -14 |
| 1 | January 05, 2004 | -17 |
| 16 | December 30, 2003 | -9 |
| 12 | January 29, 2002 | -11 |
| 7 | January 30, 2001 | -14 |
| 14 | November 17, 2000 | -10 |
| 16 | January 27, 1999 | -9 |
| -2 | December 21, 1998 | -19 |
| 8 | January 13, 1997 + | -13 |
| 1 | February 03, 1996 | -17 |
| 9 | January 02, 1995 | -13 |
| 7 | November 21, 1994 | -14 |
| 0 | November 24, 1993 | -18 |
| 0 | December 06, 1992 | -18 |
| -12 | January 05, 1991 | -24 |
| -25 | December 22, 1990 | -32 |
| -15 | February 05, 1989 | -26 |
| -4 | December 28, 1988 | -20 |
| 0 | January 16, 1987 | -18 |
| 1 | January 13, 1986 | -17 |
| -12 | February 04, 1985 | -24 |
| -13 | January 18, 1984 | -25 |
| -18 | December 23, 1983 | -28 |
| -10 | January 06, 1982 | -23 |
| 5 | December 31, 1981 + | -15 |
| -7 | January 27, 1980 | -22 |
| -13 | January 30, 1979 | -25 |
| -9 | December 31, 1978 | -23 |
| -14 | January 08, 1977 | -26 |
| 3 | February 05, 1976 | -16 |
| -5 | January 02, 1975 | -21 |
| -5 | January 09, 1974 | -21 |
| 11 | January 27, 1973 | -12 |
| -23 | December 10, 1972 | -31 |
| 6 | March 01, 1971 + | -14 |
| 5 | January 07, 1970 | -15 |
| 5 | January 29, 1969 | -15 |
| 6 | December 21, 1968 + | -14 |
| 2 | December 16, 1967 + | -17 |
| 2 | December 27, 1966 | -17 |
| 8 | December 23, 1965 + | -13 |
| 1 | December 17, 1964 + | -17 |
| -7 | January 12, 1963 | -22 |
| -12 | January 23, 1962 + | -24 |
| 4 | December 11, 1961 + | -16 |
| -4 | January 18, 1960 | -20 |
| 3 | January 04, 1959 + | -16 |
| 13 | November 17, 1958 | -11 |
| -9 | January 30, 1957 + | -23 |
| -6 | February 01, 1956 | -21 |
| -3 | November 15, 1955 | -19 |
| 7 | December 27, 1954 | -14 |
| 13 | December 27, 1953 + | -11 |
| -2 | January 18, 1952 + | -19 |
| 1 | January 30, 1951 | -17 |
| -17 | January 31, 1950 | -27 |
| -7 | January 20, 1949 | -22 |
| 0 | December 23, 1948 | -18 |
| -10 | January 15, 1947 | -23 |
| 11 | January 15, 1946 + | -12 |
| 0 | December 18, 1945 | -18 |
| 0 | January 09, 1944 | -18 |
| -10 | January 18, 1943 | -23 |
| -13 | January 01, 1942 | -25 |
| 0 | December 31, 1941 | -18 |
| 9 | December 15, 1940 + | -13 |
| 9 | February 09, 1939 | -13 |
| 5 | November 12, 1938 | -15 |
| -25 | January 21, 1937 | -32 |
| -9 | February 08, 1936 | -23 |
| -18 | January 20, 1935 | -28 |
| 16 | December 31, 1934 | -9 |
| -21 | February 10, 1933 | -29 |
| -16 | December 11, 1932 | -27 |
| -7 | December 15, 1931 | -22 |
| -28 | January 22, 1930 | -33 |
| – | 1929 | – |
| -5 | December 22, 1928 | -21 |
| -4 | December 31, 1927 + | -20 |
| -7 | December 14, 1926 | -22 |
| 7 | January 16, 1925 | -14 |
| – | 1924 | – |
| -3 | February 09, 1923 | -19 |
| -18 | January 19, 1922 | -28 |
| 9 | February 07, 1921 + | -13 |
| – | 1920 | – |
| -16 | December 08, 1919 | -27 |
| -7 | December 31, 1918 | -22 |
| -9 | January 17, 1917 | -23 |
| -8 | January 20, 1916 | -22 |
| – | 1915 | – |
| -8 | December 17, 1914 | -22 |
| -4 | January 06, 1913 | -20 |
| -15 | January 08, 1912 | -26 |
| 0 | January 17, 1911 | -18 |
Reference
Jay Lawrimore. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information.