
- Track temp
- 69°F21°C
- Rain chance
- 3%
- Wind
- 8mph13km/hSE
- Density alt.
- 668ft204m
- Barometer 30.34 inHg1027 hPa falling
- Humidity 54%
- Cloud 65%
- UV 1
Forecast updated · Open-Meteo
Hour by hour
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 31
61°16° 47°8° 9%Green flag
- TomorrowNov 1
62°17° 48°9° 12%Green flag
- MonNov 2
61°16° 54°12° 18%Yellow flag
- TueNov 3
72°22° 59°15° 58%Red flag
- WedNov 4
64°18° 55°13° 59%Yellow flag
- ThuNov 5
56°14° 51°10° 44%Green flag
- FriNov 6
53°12° 52°11° 28%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | 61°16° 47°8° | 9% | 21 mph33 km/h ESE | 77°25° | 668 ft204 m | 8:15 AM · 6:40 PM | |
| Tomorrow Nov 1 | Green flag | 62°17° 48°9° | 12% | 16 mph25 km/h SSE | 75°24° | 782 ft238 m | 7:16 AM · 5:39 PM | |
| Mon Nov 2 | Yellow flaggusty wind | 61°16° 54°12° | 18% 0.01 in0.2 mm | 33 mph53 km/h SSE | 68°20° | 955 ft291 m | 7:18 AM · 5:38 PM | |
| Tue Nov 3 | Red flagrain, gusty wind | 72°22° 59°15° | 58% 0.15 in3.7 mm | 40 mph65 km/h S | 84°29° | 1,939 ft591 m | 7:19 AM · 5:37 PM | |
| Wed Nov 4 | Yellow flaggusty wind | 64°18° 55°13° | 59% 0.35 in8.9 mm | 40 mph64 km/h SW | 73°23° | 1,217 ft371 m | 7:20 AM · 5:35 PM | |
| Thu Nov 5 | Green flag | 56°14° 51°10° | 44% <0.01 in0.1 mm | 15 mph24 km/h NW | 63°17° | 838 ft255 m | 7:21 AM · 5:34 PM | |
| Fri Nov 6 | Green flag | 53°12° 52°11° | 28% 0.03 in0.7 mm | 19 mph31 km/h NE | 55°13° | 735 ft224 m | 7:23 AM · 5:33 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 7 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 61°16° | 44°7° | 54% | 30.34 inHg1027 hPa | 668 ft204 m | 1.201 | 43 | 69°21° | 8 mph13 km/h SE | 3% | |
| 59°15° | 45°7° | 59% | 30.35 inHg1028 hPa | 518 ft158 m | 1.206 | 44 | 63°17° | 5 mph8 km/h SE · gusts 14 mph23 km/h | 4% | |
| 56°14° | 44°7° | 62% | 30.32 inHg1027 hPa | 397 ft121 m | 1.211 | 43 | 56°14° | 6 mph10 km/h SE · gusts 13 mph21 km/h | 4% | |
| 55°13° | 42°6° | 63% | 30.34 inHg1027 hPa | 245 ft75 m | 1.216 | 40 | 55°13° | 7 mph11 km/h SE · gusts 17 mph27 km/h | 3% | |
| 53°12° | 42°5° | 65% | 30.32 inHg1027 hPa | 174 ft53 m | 1.219 | 39 | 53°12° | 8 mph12 km/h SE · gusts 17 mph27 km/h | 5% | |
| 54°12° | 42°5° | 63% | 30.35 inHg1028 hPa | 185 ft56 m | 1.218 | 39 | 54°12° | 9 mph14 km/h SE · gusts 17 mph27 km/h | 8% | |
| 53°12° | 41°5° | 63% | 30.37 inHg1028 hPa | 132 ft40 m | 1.220 | 39 | 53°12° | 10 mph17 km/h SE · gusts 21 mph33 km/h | 9% |
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 GingerMan
Pit box, all week
Every forecast hour for the next seven days at GingerMan: 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 GingerMan, and a heads-up three days out.
Facts
- Location
- South Haven, Michigan
- Layout
- 2.14-mile, 11-turn road course
- Length
- 2.14 mi (3.44 km)
- Surface
- Asphalt
- Opened
- 1996
- Series
- Club racing
- Signature events
- Track days and club racing
- Time zone
- America/Detroit
- Elevation
- 719 ft (219 m)