Idaho Falls May Weather

Averages and records for weather in Idaho Falls, Idaho in the month of May.
Typical Idaho Falls May Weather
1991–2020
Average daily high 67.6 °F
Average daily low 38.8 °F
Average monthly precipitation 1.5 inches
Daily chance of precipitation 29.2%
Idaho Falls May Weather Records
1948–2024
Highest temperature 94 °F May 29, 2003
Lowest temperature 17 °F May 5, 1982
Highest daily low 60 °F May 20, 1954
Lowest daily high 36 °F May 6, 1965
Hottest average high temperature 76.0 °F 1958
Coldest average high temperature 60.3 °F 2010
Most daily precipitation 1.7 inches May 6, 1993
Most monthly precipitation 4.3 inches 1981
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
May 1 62.9 34.8 82 19
May 2 63.2 35.0 84 18
May 3 63.7 35.3 85 22
May 4 64.0 35.6 86 22
May 5 64.4 35.9 85 17
May 6 64.7 36.2 86 25
May 7 64.8 36.4 86 22
May 8 65.0 36.6 84 24
May 9 65.3 36.9 87 21
May 10 65.6 37.2 82 22
May 11 66.0 37.4 87 24
May 12 66.2 37.8 87 24
May 13 66.5 38.0 88 25
May 14 66.8 38.3 86 27
May 15 67.2 38.6 88 27
May 16 67.6 38.9 93 23
May 17 68.0 39.2 87 27
May 18 68.3 39.5 89 25
May 19 68.7 39.8 89 19
May 20 68.9 40.0 87 24
May 21 69.3 40.2 88 27
May 22 69.6 40.4 87 29
May 23 69.9 40.7 88 25
May 24 70.2 40.9 87 26
May 25 70.6 41.2 88 25
May 26 70.8 41.5 87 25
May 27 71.0 41.7 88 29
May 28 71.1 42.0 94 30
May 29 71.2 42.1 94 31
May 30 71.4 42.2 91 31
May 31 71.6 42.4 89 28
Weather Station Details
Years Station Coordinates
1948–2024 Idaho Falls Fanning Field location