Idaho Falls Weather Records

Idaho Falls, Idaho weather averages and records from 1948–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Idaho Falls, Idaho was 102 °F which occurred on June 25, 1988.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Idaho Falls, Idaho was -38 °F which occurred on February 1, 1985.
Lowest Temperatures: All-Time By Year
Idaho Falls Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 28.7 11.8 57 -33 0.6
February 34.1 15.4 62 -38 0.5
March 47.2 25.7 73 -16 0.8
April 57.7 31.7 86 13 1.1
May 67.6 38.8 94 17 1.5
June 76.5 44.7 102 29 1.1
July 87.2 49.6 101 33 0.4
August 85.7 47.8 100 28 0.6
September 75.1 40.5 100 18 0.9
October 59.6 31.2 88 -3 0.9
November 43.2 21.8 71 -19 0.6
December 30.5 13.4 58 -31 0.7
Entire year 58.0 31.2 102 -38 9.8
More Idaho Falls Weather Records
1948–2024
Highest daily low 71 °F August 8, 1983
Lowest daily high -13 °F January 1, 1979
Greatest daily range
(Difference of high and low)
57 °F August 4, 1979
Greatest difference in daily high
over two conscutive days
38 °F Jun 6–7, 1950
Most daily precipitation 1.7 inches May 6, 1993
Most monthly precipitation 4.3 inches May 1981
Most yearly precipitation 15.8 inches 1980
Most yearly days with precipitation 124 1983
Earliest freeze August 25 1992
Earliest day ≥ 70 °F March 15 2015
Earliest day ≥ 80 °F April 15 1985
Earliest day ≥ 90 °F May 16 1964
Latest freeze June 26 1976
Latest day ≥ 70 °F November 6 2020
Latest day ≥ 80 °F October 14 1958
Latest day ≥ 90 °F September 30 1957
Most days in a year < 0 °F 43 1985
Most days in a year < 32 °F 199 2002
Most days in a year ≥ 80 °F 100 2021
Most days in a year ≥ 90 °F 58 2022
Most days in a year ≥ 100 °F 2 2002
Idaho Falls Weather Streaks
Most consecutive days...
With precipitation 13 days Jan 3–15, 1980
Without precipitation 63 days Sep 12 – Nov 13, 1952
High temperature at or
below freezing
49 days Jan 22 – Mar 10, 1964
High temperature ≥ 80 °F 73 days Jun 29 – Sep 9, 1998
High temperature ≥ 90 °F 18 days Jul 15 – Aug 1, 2023
Plant Hardiness Zone
5B
Idaho Falls is in plant hardiness zone 5B
based on average yearly minimum temperature from 1991–2020
Idaho Falls Weather by Year
More Idaho Falls Weather
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Weather Station Details
Years Station Coordinates
1948–2024 Idaho Falls Fanning Field location