Wind on the strip—The strip’s direction is not mapped
Computed from the forecast air temperature, dew point and station pressure (NWS formulas; the correction factor by SAE J1349 and the older 60 °F STD standard). Track temperature is estimated from sun, wind and the surface; it is not a sensor reading. How these are figured.
This week
Day by day
TodayNov 868°20°58°14° 56%Green flag
TomorrowNov 973°23°55°13° 17%Green flag
TueNov 1076°25°59°15° 3%Green flag
WedNov 1179°26°60°16° 3%Yellow flag
ThuNov 1269°21°55°13° 1%Yellow flag
FriNov 1358°15°47°8° 0%Green flag
SatNov 1469°21°44°7° 1%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Nov 8
Green flag
Overcast
68°20°58°14°
56%
10 mph16 km/h NW
87°30°
1,055 ft322 m
6:49 AM · 5:31 PM
Tomorrow Nov 9
Green flag
Overcast
73°23°55°13°
17%
8 mph12 km/h WSW
102°39°
1,298 ft396 m
6:50 AM · 5:30 PM
Tue Nov 10
Green flag
Light drizzle
76°25°59°15°
3% 0.03 in0.7 mm
22 mph36 km/h SSW
99°37°
1,685 ft514 m
6:51 AM · 5:30 PM
Wed Nov 11
Yellow flaggusty wind
Clear
79°26°60°16°
3% 0.01 in0.2 mm
28 mph46 km/h WNW
101°39°
2,034 ft620 m
6:52 AM · 5:29 PM
Thu Nov 12
Yellow flaggusty wind
Clear
69°21°55°13°
1%
29 mph47 km/h N
88°31°
1,160 ft354 m
6:53 AM · 5:28 PM
Fri Nov 13
Green flag
Clear
58°15°47°8°
0%
21 mph35 km/h N
79°26°
288 ft88 m
6:54 AM · 5:28 PM
Sat Nov 14
Green flag
Overcast
69°21°44°7°
1%
19 mph30 km/h S
84°29°
1,156 ft352 m
6:54 AM · 5:27 PM
Flags judge the racing hours: 9 am to 10 pm at the track for a drag strip. National Weather Service alerts raise them. Days marked partial are at the edge of the forecast. How the flags work
Today’s remaining 11 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
65°18°
57°14°
75%
30.15 inHg1021 hPa
883 ft269 m
1.194
69
87°30°
2 mph3 km/h NE
2%
66°19°
57°14°
72%
30.15 inHg1021 hPa
978 ft298 m
1.190
70
86°30°
1 mph2 km/h ESE
2%
67°20°
57°14°
69%
30.15 inHg1021 hPa
1,021 ft311 m
1.189
69
80°27°
1 mph2 km/h NW
3%
68°20°
57°14°
67%
30.17 inHg1022 hPa
1,055 ft322 m
1.188
69
79°26°
2 mph3 km/h NW
3%
67°20°
56°13°
68%
30.15 inHg1021 hPa
1,014 ft309 m
1.189
68
70°21°
2 mph4 km/h NNW
2%
64°18°
56°13°
75%
30.16 inHg1022 hPa
814 ft248 m
1.196
68
64°18°
5 mph9 km/h SW
2%
64°18°
58°14°
82%
30.16 inHg1021 hPa
784 ft239 m
1.197
72
64°18°
2 mph4 km/h SW
2%
62°17°
57°14°
84%
30.18 inHg1022 hPa
638 ft194 m
1.202
69
62°17°
4 mph6 km/h SW
2%
61°16°
58°14°
88%
30.20 inHg1023 hPa
591 ft180 m
1.204
71
61°16°
5 mph8 km/h WSW
2%
60°15°
56°14°
89%
30.20 inHg1023 hPa
489 ft149 m
1.208
68
60°15°
4 mph6 km/h W
2%
59°15°
56°13°
90%
30.16 inHg1022 hPa
452 ft138 m
1.209
66
59°15°
4 mph7 km/h W
2%
Every hour from the forecast, the same arithmetic as the pit box above (NWS density-altitude formula; track temperature is an estimate). Hours are track time.
Raceway Weather Pro
Plan the whole week at Ferris
Pit box, all week
Every forecast hour for the next seven days at Ferris: 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 Ferris, and a heads-up three days out.
Typical for November here: highs around 68°20°, lows 50°10°, rain on 23% of days.
Month by month
Average highs and lows, rain days, gusty days, freezing and hot days for all twelve months at Ferris, from 5 years of records. Part of Raceway Weather Pro.
Partly cloudyTemperature 64°18°Rain chance 2%Wind 5 mph9 km/hSWTrack temperature 64°18°Density altitude 814 ft248 m
OvercastTemperature 64°18°Rain chance 2%Wind 2 mph4 km/hSWTrack temperature 64°18°Density altitude 784 ft239 m
ClearTemperature 59°15°Rain chance 2%Wind 4 mph7 km/hWTrack temperature 59°15°Density altitude 452 ft138 m
Mostly clearTemperature 70°21°Rain chance 3%Wind 4 mph7 km/hSTrack temperature 98°37°Density altitude 1,115 ft340 m
76°25° 59°15° 3%Green flag