Idaho Falls Marathon weather.
Typically 22°C on race morning; rain in 1 of the last 10 years. Race morning (07:00 to 11:00 local time) in Idaho Falls on race day in each of the last 10 years; the 2027 race is on 24 Jul 2027.
- Typical
- 22°C (72°F)
- race-morning average
- Coolest
- 13°C (55°F)
- lowest reading, 07:00–11:00
- Warmest
- 32°C (90°F)
- highest reading, 07:00–11:00
- Wet years
- 1 of 10
- rain, drizzle or worse
- Humidity
- 35%
- typical
- Wind
- 5 km/h
- typical, at 10 m
Race morning, 07:00–11:00
Year by year
| Race day | Average | Low–high | Humidity | Wind | Rain | Conditions |
|---|---|---|---|---|---|---|
| 25 Jul 2026 | 26°C (78°F) | 19°C (67°F)–32°C (89°F) | 45% | 3 km/h | 0.0 mm | Mainly clear |
| 26 Jul 2025 | 21°C (70°F) | 14°C (58°F)–28°C (82°F) | 20% | 5 km/h | 0.0 mm | Overcast |
| 27 Jul 2024 | 23°C (73°F) | 15°C (59°F)–28°C (83°F) | 33% | 12 km/h | 0.0 mm | Overcast |
| 22 Jul 2023 | 24°C (75°F) | 17°C (62°F)–31°C (87°F) | 30% | 4 km/h | 0.0 mm | Clear |
| 23 Jul 2022 | 22°C (72°F) | 18°C (64°F)–27°C (81°F) | 28% | 8 km/h | 0.0 mm | Clear |
| 24 Jul 2021 | 23°C (73°F) | 17°C (62°F)–28°C (82°F) | 21% | 4 km/h | 0.0 mm | Clear |
| 25 Jul 2020 | 22°C (72°F) | 16°C (61°F)–28°C (82°F) | 41% | 6 km/h | 0.0 mm | Clear |
| 27 Jul 2019 | 20°C (69°F) | 18°C (64°F)–24°C (76°F) | 55% | 12 km/h | 0.8 mm | Partly cloudy |
| 21 Jul 2018 | 22°C (72°F) | 21°C (69°F)–24°C (76°F) | 36% | 8 km/h | 0.2 mm | Overcast |
| 22 Jul 2017 | 18°C (65°F) | 13°C (56°F)–24°C (75°F) | 38% | 3 km/h | 0.0 mm | Clear |
Each row is the race's date that year where we know it, else the same weekday nearest its usual date. Temperatures and humidity are averaged over 07:00 to 11:00 local time, rain is the total over those hours, and conditions are the commonest over the morning. The marathon starts at 09:00.
Kit and pacing
What it means
Warm: adjust your goal pace
Around 22°C on race morning costs most runners time. Plan to run a few seconds per kilometer slower than in cool weather, take on fluid and salt at every station, and wear light colors and sun cream.
General guidance from past years' numbers. Check the forecast in race week.
Weather data by Open-Meteo.com, from its historical weather archive (CC BY 4.0).