Grand Junction September 21 Weather Records

Daily averages and all-time records for weather in Grand Junction, Colorado for the date of September 21.
September 21 All-Time Records
1900–2024
Highest temperature 90 °F 1935
Lowest temperature 33 °F 1978
Lowest daily high 52 °F 2004
Highest daily low 64 °F 2017
Most precipitation 1.21 inches 2005
Most snow none -
September 21 Average Weather
1991–2020 1
Average high 78.7 °F
Average low 50.5 °F
Chance precipitation 23.1%
Chance snow 0.1%
Grand Junction September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 84 58 0.00 0.0
2022 67 54 0.17 0.0
2021 72 49 0.00 0.0
2020 87 55 0.00 0.0
2019 73 40 0.00 0.0
2018 83 48 0.00 0.0
2017 85 64 0.00 0.0
2016 78 60 0.01 0.0
2015 84 47 0.00 0.0
2014 80 58 0.38 0.0
2013 85 57 0.00 0.0
2012 86 47 0.00 0.0
2011 81 49 0.00 0.0
2010 88 55 0.00 0.0
2009 65 43 0.00 0.0
2008 82 60 0.00 0.0
2007 84 53 0.00 0.0
2006 57 43 0.01 0.0
2005 77 56 1.21 0.0
2004 52 45 0.17 0.0
2003 78 45 0.00 0.0
2002 80 49 0.00 0.0
2001 88 52 0.00 0.0
2000 75 49 0.11 0.0
1999 74 42 0.00 0.0
1998 79 53 0.00 0.0
1997 67 53 0.21 0.0
1996 76 45 0.00 0.0
1995 63 38 0.00 0.0
1994 78 48 0.00 0.0
1993 83 53 0.00 0.0
1992 80 49 0.00 0.0
1991 84 53 0.00 0.0
1990 76 49 0.00 0.0
1989 71 45 0.00 0.0
1988 75 55 0.12 0.0
1987 82 47 0.00 0.0
1986 79 64 0.00 0.0
1985 68 45 0.03 0.0
1984 75 58 0.06 0.0
1983 74 38 0.00 0.0
1982 81 54 0.00 0.0
1981 86 63 0.01 0.0
1980 79 51 0.00 0.0
1979 82 59 0.00 0.0
1978 68 33 0.00 0.0
1977 74 49 0.00 0.0
1976 79 51 0.01 0.0
1975 72 45 0.00 0.0
1974 82 48 0.00 0.0
1973 83 55 0.00 0.0
1972 73 45 0.00 0.0
1971 66 46 0.00 0.0
1970 72 49 0.00 0.0
1969 74 51 0.13 0.0
1968 67 41 0.00 0.0
1967 83 49 0.00 0.0
1966 88 57 0.00 0.0
1965 56 35 0.00 0.0
1964 70 45 0.00 0.0
1963 78 51 0.00 0.0
1962 74 55 0.79 0.0
1961 63 47 0.01 0.0
1960 84 61 0.00 0.0
1959 77 55 0.00 0.0
1958 82 50 0.00 0.0
1957 68 43 0.00 0.0
1956 75 55 0.01 0.0
1955 77 45 0.00 0.0
1954 82 48 0.00 0.0
1953 87 54 0.00 0.0
1952 68 53 0.34 0.0
1951 68 48 0.05 0.0
1950 67 45 0.00 0.0
1949 85 50 0.00 0.0
1948 83 46 0.00 0.0
1947 82 44 0.00 0.0
1946 80 44 0.00 0.0
1945 82 61 0.00 0.0
1944 88 52 0.00 0.0
1943 86 51 0.00 0.0
1942 79 44 0.00 0.0
1941 75 48 0.00 0.0
1940 76 55 0.15 0.0
1939 84 60 0.00 0.0
1938 85 57 0.00 0.0
1937 84 60 0.00 0.0
1936 86 49 0.00 0.0
1935 90 63 0.00 0.0
1934 83 48 0.00 0.0
1933 77 61 0.15 0.0
1932 81 56 0.00 0.0
1931 70 44 0.00 0.0
1930 86 58 0.00 0.0
1929 82 55 0.00 0.0
1928 80 49 0.00 0.0
1927 86 55 0.00 0.0
1926 89 55 0.00 0.0
1925 70 48 0.00 0.0
1924 62 35 0.00 0.0
1923 81 50 0.00 0.0
1922 87 53 0.00 0.0
1921 75 42 0.00 0.0
1920 72 54 0.06 0.0
1919 72 52 0.00 0.0
1918 89 54 0.00 0.0
1917 79 55 0.00 0.0
1916 84 54 0.00 0.0
1915 87 55 0.00 0.0
1914 72 51 0.00 0.0
1913 78 47 0.00 0.0
1912 64 34 0.00 0.0
1911 81 48 0.00 0.0
1910 81 59 0.25 0.0
1909 70 47 0.00 0.0
1908 82 57 0.00 0.0
1907 80 45 0.00 0.0
1906 82 50 0.00 0.0
1905 85 50 0.00 0.0
1904 79 56 0.00 0.0
1903 80 49 0.00 0.0
1902 62 45 0.61 0.0
1901 84 57 0.00 0.0
1900 82 51 0.00 0.0
What's the all-time high for Grand Junction on 9/21?
For the date of Sep 21, the highest temperature ever reached in Grand Junction history is 90 °F which happened in 1935.
Highest Temperatures in Grand Junction on September 21
Rank Temperature Year
1 90 °F 1935
2 89 °F 1918
2 89 °F 1926
4 88 °F 2010
4 88 °F 2001
4 88 °F 1966
4 88 °F 1944
8 87 °F 2020
8 87 °F 1953
8 87 °F 1922
8 87 °F 1915
What's the all-time low for Grand Junction on 9/21?
For the date of Sep 21, the lowest temperature ever reached in Grand Junction history is 33 °F which happened in 1978.
Lowest Temperatures in Grand Junction on September 21
Rank Temperature Year
1 33 °F 1978
2 34 °F 1912
3 35 °F 1924
3 35 °F 1965
5 38 °F 1995
5 38 °F 1983
7 40 °F 2019
8 41 °F 1968
9 42 °F 1921
9 42 °F 1999
Lowest High Temperatures in Grand Junction on September 21
Rank Temperature Year
1 52 °F 2004
2 56 °F 1965
3 57 °F 2006
4 62 °F 1924
4 62 °F 1902
6 63 °F 1995
6 63 °F 1961
8 64 °F 1912
9 65 °F 2009
10 66 °F 1971
What's the most it has ever rained in Grand Junction on 9/21?
For the date of Sep 21, the most precipitation ever recorded in Grand Junction history is 1.21 inches which happened in 2005.
All-Time Most Precipitation in Grand Junction on September 21
Rank Precipitation Year
1 1.21 inches 2005
2 0.79 inches 1962
3 0.61 inches 1902
4 0.38 inches 2014
5 0.34 inches 1952
6 0.25 inches 1910
7 0.21 inches 1997
8 0.17 inches 2022
8 0.17 inches 2004
10 0.15 inches 1940
10 0.15 inches 1933
Weather Station Details
Years Station Coordinates
1900–2024 Grand Junction Walker Field location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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