Idaho Falls Weather Records

Idaho Falls, Idaho weather averages and records from 1948–2022 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 11.9 57 -33 0.6
February 34.1 15.5 62 -38 0.5
March 47.2 25.8 73 -16 0.8
April 57.7 31.8 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 21.9 71 -19 0.6
December 30.6 13.5 58 -31 0.7
Entire year 58.0 31.3 102 -38 9.8
More Idaho Falls Weather Records
1948–2022
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
Difference in high temperature
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 15.9 inches 1980
Earliest freeze August 25 1992
Latest freeze June 26 1976
Most days in a year ≥ 80 °F 99 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
Freezing temperatures
High temperature ≤ 32 °F
49 days Jan 22 – Mar 10, 1964
High temperature ≥ 80 °F 73 days Jun 29 – Sep 9, 1998
High temperature ≥ 90 °F 13 days Jul 15–27, 2021
Idaho Falls Weather by Year
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Weather Station Details
Years Station Coordinates
1948–2022 Idaho Falls Fanning Field location