- Track temp
- 56°F13°C
- Rain chance
- 5%
- Wind
- 7mph11km/hESE · gusts 14 mph22 km/h
- Density alt.
- 231ft70m
- Barometer 30.33 inHg1027 hPa steady
- Humidity 58%
Forecast updated · Open-Meteo
Hour by hour
OvercastTemperature 56°13°Rain chance 5%Wind 7 mph11 km/hESETrack temperature 56°13°OvercastTemperature 54°12°Rain chance 5%Wind 6 mph9 km/hSETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 5%Wind 6 mph10 km/hSETrack temperature 54°12°OvercastTemperature 53°12°Rain chance 6%Wind 5 mph8 km/hESETrack temperature 53°12°OvercastTemperature 53°12°Rain chance 7%Wind 8 mph12 km/hSETrack temperature 53°12°OvercastTemperature 52°11°Rain chance 9%Wind 6 mph10 km/hSETrack temperature 52°11°OvercastTemperature 53°11°Rain chance 9%Wind 6 mph10 km/hSETrack temperature 53°11°OvercastTemperature 52°11°Rain chance 8%Wind 6 mph10 km/hSETrack temperature 52°11°OvercastTemperature 51°11°Rain chance 6%Wind 5 mph8 km/hSETrack temperature 51°11°OvercastTemperature 51°11°Rain chance 10%Wind 5 mph8 km/hSETrack temperature 51°11°OvercastTemperature 51°11°Rain chance 6%Wind 6 mph9 km/hSSETrack temperature 51°11°OvercastTemperature 51°11°Rain chance 7%Wind 5 mph8 km/hSTrack temperature 51°11°OvercastTemperature 50°10°Rain chance 6%Wind 4 mph7 km/hSSETrack temperature 50°10°OvercastTemperature 49°9°Rain chance 6%Wind 4 mph6 km/hSETrack temperature 49°9°
OvercastTemperature 49°9°Rain chance 6%Wind 3 mph5 km/hESETrack temperature 50°10°OvercastTemperature 52°11°Rain chance 7%Wind 5 mph9 km/hSSETrack temperature 57°14°OvercastTemperature 55°13°Rain chance 9%Wind 7 mph12 km/hSSETrack temperature 65°18°OvercastTemperature 60°15°Rain chance 8%Wind 5 mph8 km/hSSWTrack temperature 72°22°OvercastTemperature 61°16°Rain chance 8%Wind 4 mph7 km/hSTrack temperature 66°19°OvercastTemperature 62°17°Rain chance 8%Wind 2 mph4 km/hSETrack temperature 64°18°OvercastTemperature 64°18°Rain chance 8%Wind 4 mph6 km/hETrack temperature 75°24°OvercastTemperature 64°18°Rain chance 8%Wind 4 mph7 km/hESETrack temperature 69°21°OvercastTemperature 64°18°Rain chance 9%Wind 5 mph7 km/hSSETrack temperature 71°21°OvercastTemperature 62°17°Rain chance 9%Wind 5 mph8 km/hSTrack temperature 64°18°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 3161°16° 48°9° 11%Green flag
- TomorrowNov 164°18° 49°9° 12%Green flag
- MonNov 2
60°16° 55°13° 16%Red flag - TueNov 371°22° 58°14° 57%Yellow flag
- WedNov 4
67°20° 53°12° 59%Red flag - ThuNov 556°13° 51°11° 42%Red flag
- FriNov 656°13° 51°11° 29%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 61°16° 48°9° | 11% | 21 mph35 km/h ESE | 73°23° | 569 ft173 m | 8:15 AM · 6:41 PM |
| Tomorrow Nov 1 | Green flag | Overcast | 64°18° 49°9° | 12% | 15 mph23 km/h SSE | 75°24° | 801 ft244 m | 7:16 AM · 5:40 PM |
| Mon Nov 2 | Red flagrain | Heavy drizzle | 60°16° 55°13° | 16% 0.09 in2.2 mm | 35 mph57 km/h S | 65°18° | 838 ft255 m | 7:17 AM · 5:38 PM |
| Tue Nov 3 | Yellow flaggusty wind | Light drizzle | 71°22° 58°14° | 57% <0.01 in0.1 mm | 41 mph66 km/h S | 77°25° | 1,890 ft576 m | 7:19 AM · 5:37 PM |
| Wed Nov 4 | Red flagrain, gusty wind | Showers | 67°20° 53°12° | 59% 2.01 in51.1 mm | 39 mph63 km/h W | 64°18° | 1,363 ft415 m | 7:20 AM · 5:36 PM |
| Thu Nov 5 | Red flagrain | Rain | 56°13° 51°11° | 42% 1.14 in29 mm | 14 mph23 km/h NE | 55°13° | 682 ft208 m | 7:21 AM · 5:35 PM |
| Fri Nov 6 | Green flag | Overcast | 56°13° 51°11° | 29% 0.02 in0.4 mm | 17 mph27 km/h SSE | 59°15° | 835 ft255 m | 7:22 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 5 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 56°13° | 41°5° | 58% | 30.33 inHg1027 hPa | 231 ft70 m | 1.217 | 38 | 56°13° | 7 mph11 km/h ESE · gusts 14 mph22 km/h | 5% | |
| 54°12° | 41°5° | 61% | 30.35 inHg1028 hPa | 88 ft27 m | 1.222 | 38 | 54°12° | 6 mph9 km/h SE · gusts 15 mph25 km/h | 5% | |
| 54°12° | 40°5° | 61% | 30.35 inHg1028 hPa | 76 ft23 m | 1.222 | 37 | 54°12° | 6 mph10 km/h SE · gusts 15 mph23 km/h | 5% | |
| 53°12° | 42°6° | 68% | 30.36 inHg1028 hPa | 18 ft5 m | 1.224 | 40 | 53°12° | 5 mph8 km/h ESE · gusts 14 mph22 km/h | 6% | |
| 53°12° | 40°5° | 62% | 30.37 inHg1028 hPa | 23 ft7 m | 1.224 | 37 | 53°12° | 8 mph12 km/h SE · gusts 17 mph27 km/h | 7% |
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 Hartford
Pit box, all week
Every forecast hour for the next seven days at Hartford: 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 Hartford, and a heads-up three days out.
Getting to Hartford
Hartford, Michigan
No street address published; directions go to the track itself.
We have not checked parking and camping here yet. The track’s own site has them: official site.
Facts
- Location
- Hartford, Michigan
- Layout
- 3/8-mile semi-banked dirt oval
- Length
- 0.375 mi (0.60 km)
- Surface
- Dirt
- Banking
- semi-banked
- Series
- 410 Sprint Cars, Super Troopers, Cyber Stocks, Great Lakes Super Sprints, World of Outlaws Sprint Cars
- Signature events
- World of Outlaws Pure Michigan Showdown
- Time zone
- America/Detroit
- Elevation
- 650 ft (198 m)