Irving Frost Marathon weather.
Typically 9°C on race morning; rain in 1 of the last 10 years. Race morning (07:00 to 11:00 local time) in Irving on race day in each of the last 10 years; the 2026 race is on 19 Dec 2026.
- Typical
- 9°C (48°F)
- race-morning average
- Coolest
- 1°C (34°F)
- lowest reading, 07:00–11:00
- Warmest
- 18°C (64°F)
- highest reading, 07:00–11:00
- Wet years
- 1 of 10
- rain, drizzle or worse
- Humidity
- 77%
- typical
- Wind
- 12 km/h
- typical, at 10 m
Race morning, 07:00–11:00
Year by year
| Race day | Average | Low–high | Humidity | Wind | Rain | Conditions |
|---|---|---|---|---|---|---|
| 20 Dec 2025 | 13°C (55°F) | 11°C (52°F)–16°C (60°F) | 71% | 15 km/h | 0.0 mm | Clear |
| 21 Dec 2024 | 2°C (36°F) | 1°C (33°F)–4°C (40°F) | 82% | 7 km/h | 0.0 mm | Clear |
| 16 Dec 2023 | 7°C (44°F) | 5°C (41°F)–10°C (49°F) | 82% | 13 km/h | 0.0 mm | Clear |
| 17 Dec 2022 | 2°C (36°F) | 1°C (33°F)–5°C (40°F) | 58% | 11 km/h | 0.0 mm | Clear |
| 18 Dec 2021 | 12°C (53°F) | 11°C (52°F)–12°C (54°F) | 69% | 26 km/h | 0.0 mm | Overcast |
| 19 Dec 2020 | 13°C (56°F) | 13°C (55°F)–14°C (58°F) | 93% | 9 km/h | 0.5 mm | Light drizzle |
| 21 Dec 2019 | 7°C (45°F) | 7°C (44°F)–8°C (47°F) | 91% | 6 km/h | 0.2 mm | Overcast |
| 22 Dec 2018 | 11°C (51°F) | 9°C (48°F)–14°C (57°F) | 53% | 19 km/h | 0.0 mm | Mainly clear |
| 16 Dec 2017 | 6°C (44°F) | 3°C (38°F)–11°C (52°F) | 58% | 9 km/h | 0.0 mm | Overcast |
| 17 Dec 2016 | 15°C (59°F) | 13°C (56°F)–18°C (64°F) | 89% | 20 km/h | 0.0 mm | Partly cloudy |
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 07:30.
Kit and pacing
What it means
Good racing weather
Around 9°C is close to ideal for a fast time. Shorts and a vest are enough once you're moving; bring a throwaway layer for the wait in the start pen.
It can be cold
The coolest morning here dropped to 1°C. Pack gloves and a throwaway layer even if the forecast looks kind.
The weather varies a lot
Race mornings here have ranged by 13°C from year to year. Pack for both, and settle your kit and pacing from the forecast in the last few days.
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).