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Race-day weather · Wyndo for runners

St. Jude Memphis Marathon weather

December 5, 2026 · Memphis, TN · scheduled start 8:00 AM (America/Chicago). What the start usually feels like, year by year — and a live start-time read once the race is inside the 7-day forecast window.

Countdown

145 days to race day

The live race-day forecast unlocks 139 days from now, when December 5, 2026 enters the 7-day forecast window — a start-time read for the scheduled 8:00 AM start. Until then, no made-up long-range forecast — the history below is what race morning usually looks like.

Typical start temp

42°F

median of 20 years

A warm year

52°F

75th percentile start temp

Rain at the start

5%

1 of 20 measured years

Race-morning weather history

Early-December Memphis swings widely; the 2013 race was cancelled for an ice storm — freezing rain is the tail risk. Wyndo tracks what this calendar slot has actually served up at the start hour — temperature, dew point, wind, and rain — including the years when weather canceled or disrupted the race, and reads the live forecast for the start once race week arrives.

Median start temp

42°F

p75 (a warm year): 52°F

Median dew point

34°F

at the start hour

Rain at the start

5%

1 of 20 measured years

Warmest start

63°F

in 2018

Start-hour weather by year for the St. Jude Memphis Marathon's calendar slot
YearStart tempDew pointWindPrecip (start hr)Day's high
202532°F31°F3 mphdry49°F
202430°F23°F6 mphdry55°F
202346°F44°F6 mphdry58°F
202261°F59°F7 mphdry65°F
202162°F61°F2 mphdry63°F
202032°F30°F4 mphdry59°F
201940°F37°F4 mphdry52°F
201863°F62°F7 mph0.2 mm72°F
201742°F36°F3 mphdry66°F
201645°F32°F9 mphdry48°F
201531°F27°F4 mphdry60°F
201452°F47°F11 mphdry65°F
201322°F15°F12 mphdry27°F
201252°F42°F7 mphdry71°F
201146°F36°F9 mphdry65°F
201052°F49°F9 mphdry59°F
200925°F23°F3 mphdry41°F
200832°F23°F6 mphdry49°F
200742°F26°F8 mphdry65°F
200630°F26°F6 mphdry45°F

Slot climatology, honestly framed: each row is the weather at this race's usual calendar slot and start hour (ERA5 reanalysis at the start line) — including years when the edition was canceled or moved, because what the slot serves up is exactly the question. A computed slot date is not a claim the race ran that day.

Your heat-adjusted goal for the marathon

The same cited model as the full calculator, pointed at this race: the median start-hour conditions this calendar slot has served up — climatology, not a forecast.

Training for this race?

Wyndo can email you when conditions turn good for a run near Memphis, TN — and stay quiet when they don't. (A race-week forecast alert keyed to race day is coming next.)

Get an alert when it's a good time for running

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Race facts

Start line
B.B. King Blvd near Beale Street Entertainment District (2026 exact spot TBD)
Scheduled start
8:00 AM (America/Chicago) — Marathon and half start 8:00, 10K and 5K start 7:00 per official 2026 page; exact 2026 start location listed TBD, historically B.B. King Blvd at the Beale Street district.
Field size
2025 marathon finishers 1,973; half marathon is the largest race of the ~20k+ runner weekend
Registration
open, with St. Jude Hero fundraising entries

Wyndo is not affiliated with or endorsed by the St. Jude Memphis Marathon (officially the "St. Jude Memphis Marathon Weekend") or its organizers. Race names are used descriptively to identify the event; schedules and start times belong to the race — always confirm details on the official site. Weather guidance here is informational, never medical advice, and event alert flags on race day belong to the race's own medical team.