Jack Jill's Downhill Marathon weather.

Typically 14°C on race morning; rain in 2 of the last 10 years. Race morning (07:00 to 11:00 local time) in Riverpoint on race day in each of the last 10 years; the 2027 race is on 24 Jul 2027.

Typical
14°C (57°F)
race-morning average
Coolest
9°C (48°F)
lowest reading, 07:00–11:00
Warmest
19°C (66°F)
highest reading, 07:00–11:00
Wet years
2 of 10
rain, drizzle or worse
Humidity
88%
typical
Wind
3 km/h
typical, at 10 m

Race morning, 07:00–11:00

Year by year

Race dayAverageLow–highHumidityWindRainConditions
25 Jul 202614°C (58°F)13°C (55°F)–16°C (61°F)92%2 km/h0.0 mmPartly cloudy
26 Jul 202512°C (53°F)11°C (51°F)–14°C (57°F)94%1 km/h0.0 mmOvercast
27 Jul 202414°C (57°F)12°C (54°F)–17°C (62°F)80%1 km/h0.0 mmClear
22 Jul 202315°C (60°F)13°C (56°F)–18°C (65°F)86%2 km/h0.0 mmClear
23 Jul 202214°C (57°F)13°C (56°F)–14°C (58°F)98%5 km/h1.1 mmLight drizzle
24 Jul 202114°C (57°F)12°C (54°F)–18°C (64°F)85%2 km/h0.0 mmClear
25 Jul 202010°C (51°F)9°C (47°F)–14°C (57°F)91%3 km/h0.0 mmClear
27 Jul 201916°C (61°F)16°C (60°F)–17°C (62°F)93%8 km/h2.2 mmDrizzle
21 Jul 201811°C (53°F)9°C (49°F)–15°C (59°F)83%3 km/h0.0 mmClear
22 Jul 201717°C (62°F)15°C (59°F)–19°C (67°F)76%3 km/h0.0 mmOvercast

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 06:00.

Kit and pacing

What it means

  • Mild: start a touch conservatively

    Around 14°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.

General guidance from past years' numbers. Check the forecast in race week.

The course 2027 dates and entry

Weather data by Open-Meteo.com, from its historical weather archive (CC BY 4.0).

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