San Diego 50 & Trail Runs weather.
Typically 12°C on race morning; rain in 1 of the last 10 years. Race morning (07:00 to 11:00 local time) in Escondido on race day in each of the last 10 years; the 2027 race is on 9 Jan 2027.
- Typical
- 12°C (54°F)
- race-morning average
- Coolest
- 2°C (36°F)
- lowest reading, 07:00–11:00
- Warmest
- 20°C (68°F)
- highest reading, 07:00–11:00
- Wet years
- 1 of 10
- rain, drizzle or worse
- Humidity
- 67%
- typical
- Wind
- 7 km/h
- typical, at 10 m
Race morning, 07:00–11:00
Year by year
| Race day | Average | Low–high | Humidity | Wind | Rain | Conditions |
|---|---|---|---|---|---|---|
| 10 Jan 2026 | 12°C (53°F) | 9°C (47°F)–17°C (62°F) | 35% | 17 km/h | 0.0 mm | Clear |
| 11 Jan 2025 | 11°C (53°F) | 7°C (45°F)–17°C (63°F) | 25% | 5 km/h | 0.0 mm | Clear |
| 6 Jan 2024 | 8°C (46°F) | 2°C (36°F)–16°C (61°F) | 69% | 7 km/h | 0.0 mm | Clear |
| 7 Jan 2023 | 10°C (51°F) | 7°C (44°F)–17°C (62°F) | 67% | 9 km/h | 0.0 mm | Overcast |
| 8 Jan 2022 | 12°C (54°F) | 12°C (53°F)–14°C (56°F) | 85% | 7 km/h | 0.0 mm | Overcast |
| 9 Jan 2021 | 12°C (53°F) | 7°C (45°F)–18°C (65°F) | 46% | 3 km/h | 0.0 mm | Clear |
| 11 Jan 2020 | 9°C (49°F) | 6°C (43°F)–14°C (56°F) | 67% | 4 km/h | 0.0 mm | Clear |
| 12 Jan 2019 | 12°C (53°F) | 11°C (51°F)–13°C (55°F) | 84% | 8 km/h | 7.9 mm | Rain |
| 6 Jan 2018 | 17°C (63°F) | 15°C (58°F)–20°C (68°F) | 57% | 3 km/h | 0.0 mm | Overcast |
| 7 Jan 2017 | 12°C (54°F) | 8°C (46°F)–17°C (62°F) | 69% | 7 km/h | 0.0 mm | Overcast |
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 07:00.
Kit and pacing
What it means
Mild: start a touch conservatively
Around 12°C feels fine at the start but warms up by the second half. Drink from the early stations rather than waiting until you're thirsty, and wear the lightest kit you have.
Have a warm-day plan
In the warmest of these years it reached 20°C by late morning. Decide in advance how much you'd slow down if the forecast is warm, rather than on the course.
It can be cold
The coolest morning here dropped to 2°C. Pack gloves and a throwaway layer even if the forecast looks kind.
The weather varies a lot
Race mornings here have ranged by 9°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).