- Track temp
- 64°F18°C
- Rain chance
- 1%
- Wind
- 8mph12km/hWNW
- Density alt.
- 181ft55m
- Barometer 29.89 inHg1012 hPa falling
- Humidity 57%
- Cloud 100%
- UV 4
Forecast updated · Open-Meteo
Hour by hour
OvercastTemperature 59°15°Rain chance 1%Wind 8 mph12 km/hWNWTrack temperature 64°18°OvercastTemperature 57°14°Rain chance 1%Wind 7 mph11 km/hWNWTrack temperature 62°17°OvercastTemperature 56°13°Rain chance 1%Wind 8 mph12 km/hWNWTrack temperature 58°14°
Mostly clearTemperature 54°12°Rain chance 1%Wind 9 mph15 km/hWNWTrack temperature 55°13°
Mostly clearTemperature 52°11°Rain chance 2%Wind 10 mph16 km/hWNWTrack temperature 52°11°
OvercastTemperature 51°11°Rain chance 1%Wind 9 mph15 km/hWNWTrack temperature 51°11°ClearTemperature 51°10°Rain chance 2%Wind 9 mph14 km/hWNWTrack temperature 51°10°ClearTemperature 50°10°Rain chance 1%Wind 7 mph11 km/hWNWTrack temperature 50°10°ClearTemperature 49°9°Rain chance 1%Wind 5 mph8 km/hWTrack temperature 49°9°ClearTemperature 49°9°Rain chance 5%Wind 3 mph5 km/hWTrack temperature 49°9°OvercastTemperature 49°9°Rain chance 14%Wind 7 mph12 km/hWSWTrack temperature 49°9°OvercastTemperature 50°10°Rain chance 19%Wind 7 mph11 km/hWTrack temperature 50°10°OvercastTemperature 49°10°Rain chance 35%Wind 8 mph14 km/hWNWTrack temperature 49°10°OvercastTemperature 49°9°Rain chance 40%Wind 10 mph16 km/hWNWTrack temperature 49°9°
Light drizzleTemperature 48°9°Rain chance 21%Wind 8 mph13 km/hWNWTrack temperature 48°9°Light drizzleTemperature 48°9°Rain chance 19%Wind 8 mph13 km/hWNWTrack temperature 48°9°OvercastTemperature 48°9°Rain chance 3%Wind 5 mph8 km/hWNWTrack temperature 48°9°Mostly clearTemperature 46°8°Rain chance 1%Wind 9 mph14 km/hWNWTrack temperature 46°8°ClearTemperature 49°10°Rain chance 1%Wind 7 mph11 km/hNWTrack temperature 54°12°ClearTemperature 53°11°Rain chance 0%Wind 6 mph9 km/hNWTrack temperature 65°18°ClearTemperature 55°13°Rain chance 0%Wind 3 mph6 km/hWNWTrack temperature 76°25°ClearTemperature 58°15°Rain chance 0%Wind 4 mph6 km/hWNWTrack temperature 84°29°ClearTemperature 61°16°Rain chance 0%Wind 4 mph6 km/hWTrack temperature 89°31°ClearTemperature 63°17°Rain chance 0%Wind 5 mph8 km/hWSWTrack temperature 89°32°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 3160°15° 47°8° 2%Green flag
- TomorrowNov 164°18° 46°8° 40%Green flag
- MonNov 264°18° 47°9° 3%Green flag
- TueNov 358°15° 50°10° 47%Green flag
- WedNov 469°20° 46°8° 14%Green flag
- ThuNov 570°21° 52°11° 3%Green flag
- FriNov 671°22° 51°10° 4%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 60°15° 47°8° | 2% | 18 mph29 km/h WNW | 80°27° | 284 ft87 m | 7:33 AM · 6:13 PM |
| Tomorrow Nov 1 | Green flag | Clear | 64°18° 46°8° | 40% 0.03 in0.8 mm | 23 mph36 km/h WNW | 89°32° | 447 ft136 m | 6:34 AM · 5:12 PM |
| Mon Nov 2 | Green flag | Overcast | 64°18° 47°9° | 3% | 13 mph20 km/h W | 82°28° | 252 ft77 m | 6:35 AM · 5:10 PM |
| Tue Nov 3 | Green flag | Drizzle | 58°15° 50°10° | 47% 0.05 in1.3 mm | 8 mph13 km/h ESE | 65°18° | -47 ft-14 m | 6:37 AM · 5:09 PM |
| Wed Nov 4 | Green flag | Overcast | 69°20° 46°8° | 14% | 6 mph10 km/h NNW | 97°36° | 662 ft202 m | 6:38 AM · 5:08 PM |
| Thu Nov 5 | Green flag | Overcast | 70°21° 52°11° | 3% | 6 mph10 km/h NW | 97°36° | 829 ft253 m | 6:39 AM · 5:07 PM |
| Fri Nov 6 | Green flag | Overcast | 71°22° 51°10° | 4% | 4 mph6 km/h NNE | 94°34° | 779 ft237 m | 6:40 AM · 5:06 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 9 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 59°15° | 44°7° | 57% | 29.89 inHg1012 hPa | 181 ft55 m | 1.218 | 42 | 64°18° | 8 mph12 km/h WNW | 1% | |
| 57°14° | 44°7° | 62% | 29.87 inHg1012 hPa | 104 ft32 m | 1.221 | 43 | 62°17° | 7 mph11 km/h WNW | 1% | |
| 56°13° | 47°8° | 71% | 29.85 inHg1011 hPa | 37 ft11 m | 1.224 | 47 | 58°14° | 8 mph12 km/h WNW | 1% | |
| 54°12° | 46°8° | 74% | 29.88 inHg1012 hPa | -97 ft-30 m | 1.228 | 46 | 55°13° | 9 mph15 km/h WNW · gusts 17 mph28 km/h | 1% | |
| 52°11° | 44°7° | 75% | 29.88 inHg1012 hPa | -237 ft-72 m | 1.234 | 43 | 52°11° | 10 mph16 km/h WNW · gusts 18 mph29 km/h | 2% | |
| 51°11° | 45°7° | 78% | 29.88 inHg1012 hPa | -293 ft-89 m | 1.236 | 44 | 51°11° | 9 mph15 km/h WNW · gusts 17 mph28 km/h | 1% | |
| 51°10° | 44°7° | 78% | 29.87 inHg1011 hPa | -324 ft-99 m | 1.237 | 43 | 51°10° | 9 mph14 km/h WNW · gusts 16 mph26 km/h | 2% | |
| 50°10° | 43°6° | 77% | 29.86 inHg1011 hPa | -369 ft-112 m | 1.238 | 41 | 50°10° | 7 mph11 km/h WNW | 1% | |
| 49°9° | 42°6° | 77% | 29.85 inHg1011 hPa | -439 ft-134 m | 1.241 | 40 | 49°9° | 5 mph8 km/h W | 1% |
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 Sonoma
Pit box, all week
Every forecast hour for the next seven days at Sonoma: 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 Sonoma, and a heads-up three days out.
A year at Sonoma
Typical for October here: highs around 75°24°, lows 52°11°, rain on 15% of days.
5-year averages from the Open-Meteo archive at the track's coordinates.
Getting to Sonoma
29355 Arnold Dr, Sonoma, CA 95476
Parking
2026 NASCAR weekend: free parking in designated general admission lots Friday to Sunday; paid reserved Lots 11 to 14 and Lot 3. Northbound Hwy 121 uses Gate 7, southbound goes to 50 Acres. No overnight parking. sonomaraceway.com
Camping On site
NASCAR weekend: trackside dry camping for RVs, trailers and tents, plus 50 Acres and tent-only lots; no hookups, paid water and pump-out. Each site needs 2 to 4 weekend passes. Most areas waitlisted. sonomaraceway.com
Good to know
One soft-sided cooler up to 14x14x14 inches and two bags per person; foam and hard coolers and outside alcohol are not allowed. sonomaraceway.com
From the track’s own pages, checked October 2026. Prices and rules change by event, so confirm before you go.
Facts
- Location
- Sonoma, California
- Layout
- 2.52-mile road course (1.99-mile NASCAR layout); quarter-mile drag strip
- Length
- 2.52 mi (4.06 km)
- Surface
- Asphalt
- Opened
- 1968
- Series
- NASCAR Cup, NHRA
- Signature events
- Toyota/Save Mart 350, NHRA Sonoma Nationals
- Time zone
- America/Los Angeles
- Elevation
- 30 ft (9 m)