St. George Weather Records

St. George, Utah weather averages and records from 1893–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in St. George, Utah was 117 °F which occurred on July 11, 2021.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in St. George, Utah was -11 °F which occurred on January 26, 1937.
Lowest Temperatures: All-Time By Year
St. George Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 54.9 30.8 72 -11 1.0 0.4
February 60.3 34.7 84 1 1.4 0.5
March 69.7 41.3 91 12 0.9 0.2
April 76.5 47.4 100 18 0.6 0.0
May 86.3 57.0 108 20 0.3 0.0
June 97.6 66.1 115 35 0.2 0.0
July 102.5 73.0 117 41 0.5 0.0
August 101.1 71.9 115 40 0.7 0.0
September 93.4 62.8 112 25 0.5 0.0
October 80.0 49.2 99 20 0.7 0.0
November 64.9 37.1 88 4 0.6 0.0
December 53.8 30.1 75 -4 0.8 0.0
Entire year 78.4 50.1 117 -11 8.1 1.1
More St. George Weather Records
1893–2024
Highest daily low 91 °F July 21, 1918
Lowest daily high 17 °F January 22, 1937
Greatest daily range
(Difference of high and low)
66 °F July 12, 1910
Greatest difference in daily high
over two conscutive days
40 °F Oct 15–16, 1908
Most daily precipitation 2.4 inches August 31, 1909
Most monthly precipitation 5.4 inches October 1912
Most yearly precipitation 16.2 inches 2019
Most yearly days with precipitation 79 1998
Earliest snow in season October 29 1971
Latest snow in season April 11 1927
Most daily snow 15.0 inches January 18, 1894
Most monthly snow 18.2 inches January 1894
Most yearly snow 24.2 inches 1894
Most snow in a winter 24.2 inches 1893–1894
Greatest snow accumulation 18.0 inches December 14, 1945
Earliest freeze September 21 1895
Earliest day ≥ 100 °F April 25 1946
Latest freeze May 20 1899
Latest day ≥ 100 °F September 29 1969
Most days in a year < 0 °F 8 1937
Most days in a year < 32 °F 161 1896
Most days in a year ≥ 80 °F 214 1934
Most days in a year ≥ 90 °F 156 1996
Most days in a year ≥ 100 °F 96 1994
Most days in a year ≥ 110 °F 20 1994
St. George Weather Streaks
Most consecutive days...
With precipitation 13 days Apr 1–13, 1965
Without precipitation 155 days Jun 18 – Nov 19, 2019
With snow 4 days Dec 15–18, 1967
High temperature at or
below freezing
9 days Jan 20–28, 1937
High temperature ≥ 80 °F 161 days May 23 – Oct 30, 1933
High temperature ≥ 90 °F 121 days May 29 – Sep 26, 1974
High temperature ≥ 100 °F 78 days Jun 18 – Sep 3, 1994
High temperature ≥ 110 °F 8 days Jun 24 – Jul 1, 1994
Plant Hardiness Zone
8B
St. George is in plant hardiness zone 8B
based on average yearly minimum temperature from 1991–2020
Facts About St. George Weather
St. George Weather by Year
More St. George Weather
Compare St. George to:
Weather Station Details
Years Station Coordinates
1893–2024 St. George location