Willow Springs International Raceway
The fastest road in the West
3500 75th Street West, Rosamond, CA 93560
Parking, camping and what’s nearby
- Track temp
- 71°F22°C
- Rain chance
- 5%
- Wind
- 3mph6km/hSSE
- Density alt.
- 3,584ft1,092m
- Barometer 29.87 inHg1012 hPa falling
- Humidity 52%
- Cloud 100%
- UV 2
Forecast updated · Open-Meteo
Hour by hour
OvercastTemperature 64°18°Rain chance 5%Wind 3 mph6 km/hSSETrack temperature 71°22°OvercastTemperature 64°18°Rain chance 11%Wind 7 mph12 km/hSSWTrack temperature 70°21°OvercastTemperature 61°16°Rain chance 16%Wind 9 mph15 km/hSWTrack temperature 61°16°
OvercastTemperature 59°15°Rain chance 16%Wind 7 mph12 km/hSWTrack temperature 59°15°OvercastTemperature 58°14°Rain chance 26%Wind 7 mph11 km/hWSWTrack temperature 58°14°OvercastTemperature 56°14°Rain chance 37%Wind 5 mph8 km/hSWTrack temperature 56°14°OvercastTemperature 56°13°Rain chance 33%Wind 5 mph9 km/hWTrack temperature 56°13°
Light drizzleTemperature 55°13°Rain chance 30%Wind 6 mph10 km/hWTrack temperature 55°13°OvercastTemperature 55°13°Rain chance 36%Wind 4 mph6 km/hWTrack temperature 55°13°OvercastTemperature 54°12°Rain chance 41%Wind 6 mph10 km/hWTrack temperature 54°12°OvercastTemperature 55°13°Rain chance 36%Wind 5 mph9 km/hSWTrack temperature 55°13°OvercastTemperature 54°12°Rain chance 27%Wind 9 mph15 km/hWSWTrack temperature 54°12°DrizzleTemperature 54°12°Rain chance 21%Wind 8 mph12 km/hSWTrack temperature 54°12°OvercastTemperature 53°12°Rain chance 24%Wind 8 mph12 km/hWSWTrack temperature 53°12°OvercastTemperature 54°12°Rain chance 14%Wind 7 mph11 km/hWSWTrack temperature 54°12°OvercastTemperature 53°12°Rain chance 11%Wind 8 mph13 km/hSWTrack temperature 53°12°OvercastTemperature 52°11°Rain chance 8%Wind 11 mph17 km/hSWTrack temperature 53°12°OvercastTemperature 53°12°Rain chance 7%Wind 8 mph13 km/hWSWTrack temperature 59°15°OvercastTemperature 52°11°Rain chance 4%Wind 8 mph14 km/hWSWTrack temperature 53°12°OvercastTemperature 56°14°Rain chance 4%Wind 3 mph4 km/hWNWTrack temperature 72°22°OvercastTemperature 59°15°Rain chance 2%Wind 13 mph22 km/hWTrack temperature 77°25°OvercastTemperature 58°14°Rain chance 2%Wind 12 mph20 km/hWSWTrack temperature 63°17°
Mostly clearTemperature 58°14°Rain chance 2%Wind 18 mph29 km/hWTrack temperature 76°24°
Partly cloudyTemperature 58°15°Rain chance 2%Wind 19 mph30 km/hNWTrack temperature 72°22°Hours in your time zone (the track's when they match). Track temperature is an estimate.
The racer numbers
Computed from the forecast air temperature, dew point and station pressure (NWS formulas). Track temperature is estimated from sun, wind and the surface; it is not a sensor reading. How these are figured.
Day by day
- TodayOct 3164°18° 52°11° 37%Green flag
- TomorrowNov 159°15° 44°7° 41%Yellow flag
- MonNov 265°18° 40°5° 0%Green flag
- TueNov 373°23° 52°11° 0%Green flag
- WedNov 467°20° 47°9° 0%Green flag
- ThuNov 570°21° 52°11° 0%Green flag
- FriNov 672°22° 54°12° 0%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 64°18° 52°11° | 37% 0.02 in0.4 mm | 17 mph28 km/h WSW | 89°32° | 3,584 ft1,092 m | 7:12 AM · 6:01 PM |
| Tomorrow Nov 1 | Yellow flaggusty wind | Overcast | 59°15° 44°7° | 41% 0.03 in0.7 mm | 42 mph68 km/h W | 77°25° | 3,255 ft992 m | 6:13 AM · 5:00 PM |
| Mon Nov 2 | Green flag | Overcast | 65°18° 40°5° | 0% | 6 mph10 km/h S | 94°34° | 3,317 ft1,011 m | 6:13 AM · 4:59 PM |
| Tue Nov 3 | Green flag | Overcast | 73°23° 52°11° | 0% | 24 mph39 km/h WSW | 93°34° | 3,936 ft1,200 m | 6:14 AM · 4:58 PM |
| Wed Nov 4 | Green flag | Clear | 67°20° 47°9° | 0% | 11 mph18 km/h NE | 91°33° | 3,624 ft1,105 m | 6:15 AM · 4:57 PM |
| Thu Nov 5 | Green flag | Overcast | 70°21° 52°11° | 0% | 15 mph24 km/h NE | 88°31° | 3,773 ft1,150 m | 6:16 AM · 4:56 PM |
| Fri Nov 6 | Green flag | Clear | 72°22° 54°12° | 0% | 8 mph13 km/h NE | 93°34° | 3,845 ft1,172 m | 6:17 AM · 4:55 PM |
Flags judge the racing hours, 9 am to 10 pm at the track. Days marked partial are at the edge of the forecast.
Every hour, every number
Today’s remaining 8 hours are free. Pro members get all seven days and the CSV.
| Hour | Air | Dew pt | Humidity | Barometer | Density alt. | Air density kg/m³ | Grains | Track temp (est.) | Wind | Rain |
|---|---|---|---|---|---|---|---|---|---|---|
| 64°18° | 46°8° | 52% | 29.87 inHg1012 hPa | 3,584 ft1,092 m | 1.102 | 51 | 71°22° | 3 mph6 km/h SSE | 5% | |
| 64°18° | 46°8° | 51% | 29.88 inHg1012 hPa | 3,558 ft1,084 m | 1.103 | 50 | 70°21° | 7 mph12 km/h SSW | 11% | |
| 61°16° | 47°9° | 61% | 29.89 inHg1012 hPa | 3,359 ft1,024 m | 1.109 | 53 | 61°16° | 9 mph15 km/h SW | 16% | |
| 59°15° | 48°9° | 68% | 29.90 inHg1013 hPa | 3,238 ft987 m | 1.113 | 55 | 59°15° | 7 mph12 km/h SW · gusts 17 mph27 km/h | 16% | |
| 58°14° | 49°9° | 72% | 29.91 inHg1013 hPa | 3,167 ft965 m | 1.115 | 56 | 58°14° | 7 mph11 km/h WSW · gusts 17 mph28 km/h | 26% | |
| 56°14° | 51°10° | 81% | 29.88 inHg1012 hPa | 3,129 ft954 m | 1.117 | 60 | 56°14° | 5 mph8 km/h SW · gusts 16 mph25 km/h | 37% | |
| 56°13° | 51°10° | 82% | 29.87 inHg1012 hPa | 3,116 ft950 m | 1.117 | 60 | 56°13° | 5 mph9 km/h W · gusts 13 mph22 km/h | 33% | |
| 55°13° | 51°11° | 87% | 29.84 inHg1011 hPa | 3,108 ft947 m | 1.117 | 62 | 55°13° | 6 mph10 km/h W | 30% |
Every hour from the forecast, the same arithmetic as the pit box above (NWS density-altitude formula; track temperature is an estimate). Hours in your time zone, the track’s when they match.
Plan the whole week at Willow Springs
Pit box, all week
Every forecast hour for the next seven days at Willow Springs: density altitude, air density, grains, track temp and more, with a CSV for the tuning laptop.
Do the models agree?
ECMWF, GFS and ICON side by side for the next three racing days, so you know when the forecast is shaky.
Next 6 hours of rain
Rain in 15-minute steps for the next six hours at your tracks, refreshed every hour.
Alerts for your tracks
An email the morning a red or yellow flag is due at Willow Springs, and a heads-up three days out.
A year at Willow Springs
Typical for October here: highs around 80°27°, lows 54°12°, rain on 2% of days.
5-year averages from the Open-Meteo archive at the track's coordinates.
Getting to Willow Springs
3500 75th Street West, Rosamond, CA 93560
Parking
Guests park in the designated General Parking areas and check in and buy tickets at the Administration Building just past the front gate. Prices are not published. willowspringsraceway.com
From the track’s own pages, checked October 2026. Prices and rules change by event, so confirm before you go.
Facts
- Location
- Rosamond, California
- Layout
- 2.5-mile, 9-turn Big Willow road course
- Length
- 2.5 mi (4.02 km)
- Surface
- Asphalt
- Opened
- 1953
- Series
- Club racing
- Signature events
- The fastest road in the West
- Time zone
- America/Los Angeles
- Elevation
- 2,510 ft (765 m)