The short answer
Garmin race day weather lives on the primary race glance. Add a race in Garmin Connect and your watch shows a countdown, your goal or predicted time and the weather: history at once, a forecast about 14 days out. Garmin's manuals list no dew point or heat stress along the course; RunFast's Map your run shows both per kilometre.
Key takeaways
- Garmin's race glance shows historical weather at once and a forecast about 14 days before the race.
- Attach a course and Garmin says the prediction uses terrain, direction and wind.
- Garmin's documents don't list dew point or heat stress for each stretch of the course.
- A route forecast at your pace fills the gap; use both together.
Feature check
What each one actually shows a runner, side by side.
| Tool | Best for | Price (as of October 2026) | Own route | Min:sec pace | Dew point | Heat stress |
|---|---|---|---|---|---|---|
| Garmin race widget | Garmin runners who want a countdown, a predicted time and the weather on their wrist | Free with a compatible Garmin watch | ◐ | ✓ | ? | ? |
| FindMyMarathon race weather | A free forecast for a named marathon at your start wave and goal time | Free | – | ? | ✓ | ? |
| MeteoPace | A weather-adjusted plan for a supported race, sent to your Garmin | Race Pass $8.99; Pro $9.99 a month; Core from $5.99 a month (US App Store); 14-day Pro trial | ? | ✓ | ? | ? |
| RunFast Map your run Ours | Any route at your own pace, the heat timed to every kilometre | Free, no account | ✓ | ✓ | ✓ | ✓ |
✓ yes ◐ partly – no. Facts from each maker's own pages, as of October 2026.
On this page
- What does Garmin show for race day weather?
- How do you set up race day weather on a Garmin?
- What does Garmin's race day weather miss?
- How do you get the heat at your pace along the course?
- Which other tools show race-day weather for a course?
- How should you use Garmin and a route forecast together?
- Questions runners ask
- Sources and method
Words this guide uses
- Primary race glance
- A Garmin watch screen for the race you mark as your main event in Garmin Connect, with a countdown, a time and the weather.
- Pace-timed forecast
- The weather for each stretch of your route at the time you'll run it, worked out from your start time and pace.
- WBGT
- Wet-bulb globe temperature, a heat-stress index combining air temperature, humidity, sun and wind, used by race medical teams to set heat flags.
What does Garmin show for race day weather?
Garmin race day weather lives on the primary race glance. Add a race to your Garmin Connect calendar, and a compatible watch shows a countdown, your goal or predicted finish time, and "weather information". Our guide to the best running weather apps compares it with 14 other tools.
According to Garmin's Forerunner 970 manual, historical weather for the race's location and date appears straight away. The local forecast appears about 14 days before the event. The race must be within the next 365 days.
If the event has a course, you also get the elevation, the course map and a PacePro pace plan. It's free and built in, with nothing extra to install.
How do you set up race day weather on a Garmin?
Add the race in Garmin Connect, sync, and add the primary race glance. These steps are from Garmin's manual, as of October 2026:
- In the Garmin Connect app, open Training & Planning > Races & Events > Find an Event.
- Search for your race, or choose Create an Event if it isn't listed.
- Select Add to Calendar, then sync your watch.
- Scroll to the primary race glance on the watch. If you've added several races, pick one as primary.
Attach a course if you can. Garmin's race widget blog says a course lets the prediction take in "terrain, direction, windspeed and more". Garmin's UK blog adds that predicted race-day weather and the elevation profile then refine your predicted time.
Best forGarmin runners who want a countdown, a predicted time and the weather on their wrist
Strengths
- Built into the watch: nothing to install
- Historical weather at once; forecast about 14 days out
- With a course: elevation, course map and a PacePro pace plan
Limits
- Garmin hardware only
- Manuals don't list which weather values it shows
- No dew point or heat stress for each stretch of the course
Checked October 2026
What does Garmin's race day weather miss?
It gives the weather for the race's place and time, not the heat you'll meet at each kilometre at your pace. Garmin's own blog describes "average weather on that day based on the location and time of day".
Three gaps matter on a warm day:
- No list of values. Garmin's manuals say "weather information" without naming dew point, humidity or a heat-stress level.
- One point, not the course. Long races move through warming air, and slower runners meet more of it.
- No heat in the pacing. PacePro adjusts for elevation, and its manual entry doesn't mention heat.
Here's how far race-day heat moved in two races, on two continents:
| Race and finish time | Start air, °C (°F) | Warmest air met, °C (°F) | Hottest feels like, °C (°F) | Peak WBGT, °C (°F) |
|---|---|---|---|---|
| Boston 2024, 4 hours | 14.9 (58.8) | 21.2 (70.2) | 28.4 (83.1) | 19.7 (67.5), Moderate from km 4 |
| Comrades 2015 up run, 11 hours | 17.3 (63.1) | 25.6 (78.1) | 31.5 (88.7) | 27.1 (80.8), High from km 33 |
These are RunFast's figures from ERA5 reanalysis, not a thermometer at the start line. A start-time reading in Hopkinton or Durban would miss most of that rise. The Boston Marathon weather history and Comrades Marathon weather guides cover every year.
How do you get the heat at your pace along the course?
Use a pace-timed forecast: the weather for each stretch of your route at the time you'll run it. That's what the Garmin glance doesn't give you.
You need three things: the course file, your start time and your goal pace. In Map your run, the free tool we built, you get a map coloured by how hard the weather makes each stretch and a table with a hill-adjusted split for every kilometre or mile.
For Boston, London, Berlin and Comrades, the race pages also show every race day from 2015 to 2024 at your finish time. Try Boston or Comrades. Its limit is reach: forecasts go 10 days ahead, where Garmin's starts at 14.
Best forAny route at your own pace, the heat timed to every kilometre
Strengths
- Your own GPX, FIT or TCX route, or four big races
- Feels like, dew point and WBGT heat stress for every kilometre at your pace
- A map, a km-by-km table, a share image and a 3D flyover
Limits
- Forecasts reach 10 days ahead, not 14
- Race-day history for four races so far
- Nothing on your watch: no phone app yet, the apps are coming
Checked October 2026
Which other tools show race-day weather for a course?
Two more are worth knowing, as of October 2026: FindMyMarathon for named marathons, free, and MeteoPace for a paid plan that reaches your Garmin.
FindMyMarathon personalises a forecast by your start wave and goal time, at the start, halfway and finish. It shows temperature, wind, gusts, humidity, dew point and rain chance, with wind by segment. It doesn't state its data source.
Best forA free forecast for a named marathon at your start wave and goal time
Strengths
- Pick your start wave and finish goal
- Temperature, wind, gusts, humidity, dew point and rain chance at start, halfway and finish
- Wind by course segment
Limits
- Named marathons only
- Three points on the course
- Data source not stated
Checked October 2026
MeteoPace adjusts your race pace for temperature, humidity, wind, cloud and elevation, then sends the plan to Garmin or COROS. Per its App Store listing, as of October 2026, a Race Pass costs $8.99 and Pro $9.99 a month.
Best forA weather-adjusted plan for a supported race, sent to your Garmin
Strengths
- Adjusts pace for temperature, humidity, wind, cloud and elevation
- Splits for every km and mile marker
- Sends plans to Garmin or COROS
Limits
- Built around supported races
- Dew point and WBGT not mentioned
- Full plans are paid
Checked October 2026
Our MeteoPace alternatives and Racecast alternatives compare more race planners, free and paid.
How should you use Garmin and a route forecast together?
Let each do its job: Garmin for the countdown and pacing on the day, a route forecast for the heat plan.
- Two weeks out: glance at Garmin's forecast and the race's history. Don't change your goal yet; see when to trust a marathon forecast.
- Ten days to race eve: check the heat along the course at your pace. Note where it reaches Moderate or High.
- Two or three days out: if it's hot, slow your goal, then rebuild your PacePro plan around it.
- Race morning: follow the race's official flag. Our guide to marathon heat flags explains the colours.
Training with Runna? Its Adapt for Heat syncs adjusted paces to Garmin. If you ride too, see Epic Ride Weather for running.
Heat illness can affect seemingly healthy runners, as the American College of Sports Medicine's 2007 position stand notes. Official race flags and medical advice override any app; this guide is not medical advice.
Questions runners ask
When does the Garmin race widget show the race day forecast?
About 14 days before the event, per Garmin's manuals. Until then, the primary race glance shows historical weather for the race's location and date, which is available as soon as you add the race. The event must be within the next 365 days. Forecasts that far out are rough, so check again in the final week.
Does Garmin's predicted finish time account for the weather?
Partly. The Forerunner 970 manual says predicted race times come from your VO2 max estimate and training history. Garmin's blog adds that if a course is attached to the event, predicted race-day weather and the course elevation profile refine the race prediction. Garmin doesn't publish how much heat or humidity changes the number.
Can I add a race that isn't in Garmin Connect's event list?
Yes. In the Garmin Connect app, go to Training & Planning, then Races & Events, and choose Create an Event instead of searching. Add it to your calendar and sync your watch. To get elevation, the course map and a PacePro plan, the event needs a course, so attach one if you have the route file.
What does Garmin's heat acclimation feature measure?
It tracks how your body is adapting to heat, not the race forecast. Per Garmin's manuals, the watch gives acclimation notifications and corrects your VO2 max estimate and training status when the temperature is above 22 °C (72 °F). It works only for GPS activities and needs weather data from your connected phone.
Does Garmin show dew point for race day?
Garmin's manuals describe the race glance's "weather information" without listing dew point, and its race widget blog post describes average weather for the location and time of day. If dew point matters to you, and on a humid day it should, check a tool that shows it for each stretch of the course.
Can a Garmin PacePro plan allow for heat?
Not by itself. Per Garmin's manual, PacePro builds a pace band from a goal pace or time and can optimise effort for the course's elevation. It doesn't mention heat. If the forecast is hot, decide how much to ease off first, then build the PacePro plan around a slower goal time.
See the heat at your pace.
Drop in your route (GPX, FIT or TCX), pick the day and your pace, and see the feels like, dew point and heat stress for every kilometre, timed to when you’ll be there. Free, in your browser, no sign-up.
Sources and method
- Garmin (2026). Forerunner 970 owner's manual: Race Calendar and Primary Race
- Garmin (2026). Forerunner 970 owner's manual: Heat and Altitude Performance Acclimation
- Garmin (2022). How to train for your next race with the Garmin race widget
- Garmin UK (2025). Free race day features on your Garmin running smartwatch
- FindMyMarathon (2026). Chicago Marathon weather forecast
- MeteoPace (2026). MeteoPace race planning
- Apple App Store (2026). MeteoPace (US listing)
- Copernicus Climate Change Service (ECMWF) (2026). ERA5 hourly data on single levels from 1940 to present
- Medicine & Science in Sports & Exercise (ACSM) (2007). Exertional heat illness during training and competition (Armstrong et al.), ACSM position stand
We compared these tools; we did not test them. Garmin's features come from the Forerunner 970 owner's manual (Race Calendar and Primary Race, Viewing Your Predicted Race Times, PacePro Training, Heat and Altitude Performance Acclimation) and two Garmin blog posts (US, 22 July 2022; UK, 3 October 2025), checked in October 2026; other models' manuals carry the same race calendar text. Other tools are described from their own websites in October 2026, with MeteoPace's prices from its US App Store listing; where a page showed no price or feature, we say "not shown". The Boston and Comrades figures are RunFast's analysis of ERA5 hourly reanalysis (Copernicus Climate Change Service) along each course: Boston on 15 April 2024 for a four-hour finish from a 10:00 start, and the Comrades up run on 31 May 2015 for an 11-hour finish from a 05:30 start. That is reanalysis, not a thermometer at the start line. WBGT follows Liljegren et al. (2008), graded Low below 18.3 °C, Moderate to 22.8 °C, High to 27.8 °C. Imperial values are our conversions.
Wes Thomson
Wes Thomson builds RunFast, which times the heat, humidity and dew point to a runner's own pace along the route, and its sister Windline, live wind forecasts for cyclists. Both run on the same forecast engine. He writes these guides with one focus: what the weather will do to your run, kilometre by kilometre, and how to plan around it.