The 2025 event has concluded.
Idaho Falls Marathon
Idaho Falls, ID, USA • July 26, 2025
Race Day Weather
45°
79° high
Breezy
Dry
Cool start — fast day potential, big temp swing, moderate wind
A cool 45°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 79°F by later miles, so expect fading conditions as the race progresses. Moderate winds around 13 mph may affect pacing on open sections of the course.
Pre-raceRace windowPost-race
Historical Weather
Based on 10 years of data
Avg Temp
81°F
L:55° H:82°
RunScore
Conditions
Rain Freq
10%
1 of 10 yrs
Wind10mph
Dew48°F
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2024 | 51°/82° | - | 48° | ||
2023 | 54°/84° | - | 53° | ||
2022 | 53°/87° | - | 50° | ||
2021 | 63°/76° | Moderate | 62° | ||
2019 | 65°/75° | - | 51° | ||
2018 | 54°/79° | - | 48° | ||
2017 | 50°/83° | - | 52° | ||
2016 | 57°/86° | - | 45° | ||
2015 | 46°/81° | - | 46° | ||
2014 | 55°/82° | - | 39° |