Boise June 18 Weather Records

Daily averages and all-time records for weather in Boise, Idaho for the date of June 18.
June 18 All-Time Records
1911–2024
Highest temperature 103 °F 1974
Lowest temperature 36 °F 1973
Lowest daily high 58 °F 1964
Highest daily low 70 °F 1974
Most precipitation 0.58 inches 1916
Most snow none -
June 18 Average Weather
1991–2020 1
Average high 82.2 °F
Average low 54.2 °F
Chance precipitation 16.3%
Chance snow 0%
Boise June 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 74 53 0.05 0.0
2022 75 51 0.00 0.0
2021 97 58 0.00 0.0
2020 75 48 0.00 0.0
2019 87 58 0.00 0.0
2018 74 55 0.01 0.0
2017 85 55 0.00 0.0
2016 82 55 0.00 0.0
2015 94 60 0.00 0.0
2014 65 48 0.09 0.0
2013 88 57 0.00 0.0
2012 75 54 0.00 0.0
2011 69 56 0.14 0.0
2010 82 46 0.00 0.0
2009 78 54 0.00 0.0
2008 84 54 0.00 0.0
2007 81 50 0.00 0.0
2006 87 52 0.00 0.0
2005 70 51 0.10 0.0
2004 87 54 0.00 0.0
2003 101 69 0.00 0.0
2002 72 53 0.15 0.0
2001 75 44 0.00 0.0
2000 90 56 0.00 0.0
1999 93 66 0.00 0.0
1998 83 59 0.00 0.0
1997 80 57 0.00 0.0
1996 64 38 0.00 0.0
1995 66 50 0.25 0.0
1994 81 49 0.00 0.0
1993 84 52 0.00 0.0
1992 86 58 0.13 0.0
1991 90 44 0.00 0.0
1990 80 53 0.00 0.0
1989 89 51 0.00 0.0
1988 93 57 0.00 0.0
1987 71 50 0.00 0.0
1986 82 58 0.00 0.0
1985 95 55 0.00 0.0
1984 82 49 0.00 0.0
1983 68 47 0.00 0.0
1982 88 58 0.00 0.0
1981 78 47 0.00 0.0
1980 86 54 0.00 0.0
1979 61 46 0.09 0.0
1978 71 49 0.03 0.0
1977 88 57 0.00 0.0
1976 83 49 0.00 0.0
1975 60 48 0.02 0.0
1974 103 70 0.00 0.0
1973 66 36 0.00 0.0
1972 73 49 0.00 0.0
1971 75 50 0.00 0.0
1970 85 53 0.00 0.0
1969 89 62 0.00 0.0
1968 97 61 0.00 0.0
1967 93 59 0.00 0.0
1966 85 55 0.00 0.0
1965 72 55 0.00 0.0
1964 58 49 0.44 0.0
1963 93 65 0.00 0.0
1962 89 51 0.01 0.0
1961 100 67 0.00 0.0
1960 92 52 0.00 0.0
1959 91 55 0.00 0.0
1958 89 60 0.00 0.0
1957 88 57 0.00 0.0
1956 88 53 0.00 0.0
1955 83 54 0.00 0.0
1954 74 43 0.00 0.0
1953 73 47 0.00 0.0
1952 90 54 0.00 0.0
1951 82 47 0.00 0.0
1950 81 53 0.00 0.0
1949 78 48 0.00 0.0
1948 68 53 0.22 0.0
1947 85 47 0.00 0.0
1946 82 44 0.00 0.0
1945 87 52 0.00 0.0
1944 72 50 0.00 0.0
1943 84 53 0.00 0.0
1942 64 47 0.02 0.0
1941 69 55 0.13 0.0
1940 100 56 0.00 0.0
1939 68 41 0.00 0.0
1938 67 36 0.00 0.0
1937 70 47 0.01 0.0
1936 78 48 0.00 0.0
1935 93 50 n/a n/a
1934 82 62 0.00 n/a
1933 84 46 0.00 n/a
1932 82 43 0.00 n/a
1931 78 45 0.00 n/a
1930 85 40 0.00 n/a
1929 79 41 0.02 n/a
1928 72 45 0.00 n/a
1927 86 47 0.00 n/a
1926 81 58 0.00 0.0
1925 92 56 0.00 0.0
1924 67 46 0.02 0.0
1923 74 48 0.15 0.0
1922 92 59 0.00 0.0
1921 76 41 0.00 0.0
1920 75 46 0.00 0.0
1919 91 42 0.00 0.0
1918 92 59 0.04 0.0
1917 85 42 0.00 0.0
1916 80 57 0.58 0.0
1915 81 50 0.00 0.0
1914 98 58 0.00 0.0
1913 92 62 0.01 0.0
1912 87 49 0.00 0.0
1911 85 58 0.00 0.0
What's the all-time high for Boise on 6/18?
For the date of Jun 18, the highest temperature ever reached in Boise history is 103 °F which happened in 1974.
Highest Temperatures in Boise on June 18
Rank Temperature Year
1 103 °F 1974
2 101 °F 2003
3 100 °F 1940
3 100 °F 1961
5 98 °F 1914
6 97 °F 1968
6 97 °F 2021
8 95 °F 1985
9 94 °F 2015
10 93 °F 1988
10 93 °F 1967
10 93 °F 1963
10 93 °F 1999
10 93 °F 1935
What's the all-time low for Boise on 6/18?
For the date of Jun 18, the lowest temperature ever reached in Boise history is 36 °F which has happened 2 times, most recently in 1973.
Lowest Temperatures in Boise on June 18
Rank Temperature Year
1 36 °F 1973
1 36 °F 1938
3 38 °F 1996
4 40 °F 1930
5 41 °F 1921
5 41 °F 1929
5 41 °F 1939
8 42 °F 1919
8 42 °F 1917
10 43 °F 1954
10 43 °F 1932
Lowest High Temperatures in Boise on June 18
Rank Temperature Year
1 58 °F 1964
2 60 °F 1975
3 61 °F 1979
4 64 °F 1942
4 64 °F 1996
6 65 °F 2014
7 66 °F 1973
7 66 °F 1995
9 67 °F 1938
9 67 °F 1924
What's the most it has ever rained in Boise on 6/18?
For the date of Jun 18, the most precipitation ever recorded in Boise history is 0.58 inches which happened in 1916.
All-Time Most Precipitation in Boise on June 18
Rank Precipitation Year
1 0.58 inches 1916
2 0.44 inches 1964
3 0.25 inches 1995
4 0.22 inches 1948
5 0.15 inches 2002
5 0.15 inches 1923
7 0.14 inches 2011
8 0.13 inches 1941
8 0.13 inches 1992
10 0.10 inches 2005
Weather Station Details
Years Station Coordinates
1940–2024 location
1911–1939 Meridian 1 W location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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