St. Johns Weather Records

St. Johns, Arizona weather averages and records from 1901–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in St. Johns, Arizona was 104 °F which occurred on July 3, 1923.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in St. Johns, Arizona was -29 °F which occurred on January 7, 1971.
Lowest Temperatures: All-Time By Year
St. Johns Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 48.6 20.6 73 -29 0.5 1.4
February 55.3 24.1 78 -13 0.5 0.7
March 63.5 29.1 85 -7 0.4 0.2
April 70.6 35.5 95 7 0.3 0.1
May 79.3 44.1 99 21 0.4 0.1
June 89.2 52.5 103 25 0.2 0.0
July 90.6 59.8 104 38 1.8 0.0
August 87.8 58.1 104 38 2.0 0.0
September 82.5 50.5 99 23 1.0 0.0
October 72.0 38.6 92 7 0.7 0.5
November 59.5 27.4 82 -21 0.5 0.9
December 48.7 19.8 73 -25 0.6 2.4
Entire year 70.7 38.5 104 -29 8.9 6.5
More St. Johns Weather Records
1901–2024
Highest daily low 77 °F June 22, 2017
Lowest daily high 6 °F December 23, 1990
Greatest daily range
(Difference of high and low)		 64 °F March 14, 1959
Greatest difference in daily high
over two conscutive days		 35 °F Dec 12–13, 1901
Most daily precipitation 3.0 inches August 4, 2007
Most monthly precipitation 7.7 inches August 1984
Most yearly precipitation 18.7 inches 1984
Most yearly days with precipitation 109 1923
Earliest snow in season October 15 1994
Latest snow in season May 13 1961
Most daily snow 13.5 inches December 13, 1967
Most monthly snow 24.0 inches December 1967
Most yearly snow 56.0 inches 1975
Most snow in a winter 47.5 inches 1931–1932
Greatest snow accumulation 14.0 inches March 11, 2006
Earliest freeze September 13 1952
Earliest day ≥ 90 °F April 15 1937
Earliest day ≥ 100 °F June 12 2021
Latest freeze June 12 1907
Latest day ≥ 90 °F October 11 1950
Latest day ≥ 100 °F August 15 1962
Most days in a year < 0 °F 18 1937
Most days in a year < 32 °F 194 1933
Most days in a year ≥ 80 °F 163 2020
Most days in a year ≥ 90 °F 87 1924
Most days in a year ≥ 100 °F 13 2021
St. Johns Weather Streaks
Most consecutive days...
With precipitation 13 days Dec 24, 1921 – Jan 5, 1922
Without precipitation 141 days Mar 2 – Jul 20, 2003
With snow 5 days Apr 17–21, 1920
High temperature at or
below freezing		 11 days Jan 1–11, 1919
High temperature ≥ 80 °F 117 days Jun 1 – Sep 25, 1924
High temperature ≥ 90 °F 39 days Jul 1 – Aug 8, 2023
High temperature ≥ 100 °F 9 days Jun 12–20, 2021
Plant Hardiness Zone
7A
St. Johns is in plant hardiness zone 7A
based on average yearly minimum temperature from 1991–2020
St. Johns Weather by Year
2024 2023 2022 2021 2020 2019 2018 2017 2016 2015
2013 2012 2011 2010 2009 2008 2007 2006 2005 2004
2003 2002 2001 2000 1999 1998 1997 1996 1995 1994
1993 1992 1991 1990 1989 1988 1987 1986 1985 1984
1983 1982 1981 1980 1979 1978 1977 1976 1975 1974
1973 1972 1971 1970 1969 1968 1967 1966 1965 1964
1963 1962 1961 1960 1959 1957 1956 1955 1954 1953
1952 1951 1950 1949 1948 1947 1946 1945 1944 1943
1942 1941 1940 1939 1938 1937 1936 1935 1934 1933
1932 1931 1930 1929 1928 1927 1926 1925 1924 1923
1922 1921 1920 1919 1918 1917 1916 1915 1914 1913
1912 1911 1910 1909 1907 1906 1904 1903 1902 1901
More St. Johns Weather
Average Weather by Day
Record High by Day
Record Low by Day
Average Temperature by Year
Average Temperature by Month
Average Rainfall By Month
Recent Weather Records
Compare St. Johns to:
Weather Station Details
Years Station Coordinates
1901–2024 St. Johns location
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