Race-day weather · Wyndo for runners
Bloomsday Run weather
May 2, 2027 · Spokane, WA · traditional start around 9:00 AM (America/Los_Angeles) — not yet confirmed for 2027. What the start usually feels like, year by year — and a live start-time read once the race confirms its schedule and race week arrives.
Countdown
247 days to race day
The live race-day forecast unlocks 241 days from now, when May 2, 2027 enters the 7-day forecast window. Until then, live hourly data is not available; the history below shows what race morning usually looks like.
The 2027 schedule hasn't been published yet — both the date and start time shown here are carried from earlier editions and aggregators. We'll switch on the live start-time read when the race posts its schedule.
Typical start temp
53°F
median of 20 years
A warm year
57°F
75th percentile start temp
Rain at the start
0%
0 of 20 measured years
Race-morning weather history
Typical early-May Spokane mornings: cool (40s–50s F), variable — can be warm or wet/windy on Doomsday Hill; typical-climate characterization, UNVERIFIED; ERA5 backfill supplies actuals. COVID: 2020 in-person CANCELLED (virtual); 2021 in-person displaced out of the May slot (held virtually/rescheduled) — flag both. The 1st-Sunday-May rule describes every normal year; 2020/2021 May slots remain climatological slots per slot semantics. 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 the race confirms its schedule and race week arrives.
Median start temp
53°F
p75 (a warm year): 57°F
Median dew point
39°F
at the start hour
Rain at the start
0%
0 of 20 measured years
Warmest start
66°F
in 2013
Scroll sideways to see all columns.
| Year | Start temp | Dew point | Wind | Precip (start hr) | Day's high |
|---|---|---|---|---|---|
| 2026 | 63°F | 42°F | 2 mph | dry | 82°F |
| 2025 | 51°F | 31°F | 4 mph | dry | 63°F |
| 2024 | 53°F | 44°F | 6 mph | dry | 55°F |
| 2023 | 55°F | 45°F | 5 mph | dry | 64°F |
| 2022 | 53°F | 44°F | 3 mph | dry | 62°F |
| 2021 | 56°F | 33°F | 5 mph | dry | 65°F |
| 2020 | 50°F | 32°F | 16 mph | dry | 60°F |
| 2019 | 64°F | 45°F | 3 mph | dry | 73°F |
| 2018 | 65°F | 48°F | 7 mph | dry | 78°F |
| 2017 | 52°F | 38°F | 3 mph | dry | 64°F |
| 2016 | 57°F | 40°F | 7 mph | dry | 75°F |
| 2015 | 57°F | 24°F | 7 mph | dry | 71°F |
| 2014 | 53°F | 43°F | 13 mph | dry | 62°F |
| 2013 | 66°F | 31°F | 10 mph | dry | 80°F |
| 2012 | 50°F | 36°F | 4 mph | dry | 61°F |
| 2011 | 47°F | 33°F | 5 mph | dry | 61°F |
| 2010 | 51°F | 32°F | 9 mph | dry | 58°F |
| 2009 | 49°F | 40°F | 11 mph | dry | 59°F |
| 2008 | 58°F | 40°F | 1 mph | dry | 71°F |
| 2007 | 52°F | 35°F | 6 mph | dry | 68°F |
Slot climatology: 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. A computed slot date is not a claim the race ran that day.
Your heat-adjusted goal for the 12k
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.
Your race-day brief
Skip the taper-week refresh spiral. Email briefs for the Bloomsday Run: a race-morning outlook when race day enters the 7-day forecast window, updates only when it changes meaningfully, and a final look the day before.
Email me when the Bloomsday Run forecast firms up
The first race-day outlook when your race enters the 7-day forecast window, an update when it changes meaningfully, and a final look the day before.
We'll email you a sign-in code. No password needed.
Race facts
- Start line
- Riverside Ave between Lincoln & Post Sts (official start address ~801 W Riverside), downtown Spokane near Riverfront Park; course runs the "Doomsday Hill" loop, finish at the north end of the Monroe St Bridge. Coordinate geocoded from the official 801 W Riverside anchor — near-exact but the wave start spans a block.
- Traditional start (not confirmed for 2027)
- 9:00 AM (America/Los_Angeles) — Wave start: Elite Wheelchair 8:30 AM, Elite Women 8:45 AM, Elite Men + first color waves 9:00 AM (visitspokane 2026 / bloomsdayrun.org). Headline gun = 9:00 AM. Color-group waves stagger after; a scrape of an individual wave time will mislead.
- Field size
- IN-PERSON FINISHERS, 2025 (49th edition, May 4, 2025): 30,050 finished of 32,923 registrants (Spokesman-Review "Bloomsday 2025 by the numbers," spokesman.com 2025-05-04). A separate ~2,096 completed the virtual option — excluded here. "Over 36,000 participants" marketing copy on visitspokane is a peak/registration-era figure, not 2025 finishers. Re-verify live before ship (checked 2026-08-27).
- Registration
- open (Race Roster; no lottery/qualifier)
Wyndo is not affiliated with or endorsed by the Bloomsday Run (officially the "Lilac Bloomsday Run") 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.