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 861°16°40°4° 0%Yellow flag
TomorrowNov 955°13°35°2° 3%Green flag
TueNov 1060°15°41°5° 0%Green flag
WedNov 1154°12°45°7° 30%Red flag
ThuNov 1246°8°33°1° 27%Red flag
FriNov 1340°4°29°-2° 14%Yellow flag
SatNov 1442°6°27°-3° 1%Yellow flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Nov 8
Yellow flaggusty wind
Clear
61°16°40°4°
0%
30 mph48 km/h W
75°24°
1,091 ft333 m
6:33 AM · 4:38 PM
Tomorrow Nov 9
Green flag
Overcast
55°13°35°2°
3%
21 mph33 km/h WSW
71°22°
546 ft166 m
6:35 AM · 4:37 PM
Tue Nov 10
Green flag
Overcast
60°15°41°5°
0%
21 mph33 km/h WNW
78°26°
918 ft280 m
6:36 AM · 4:35 PM
Wed Nov 11
Red flagrain
Heavy drizzle
54°12°45°7°
30% 1.1 in27.9 mm
24 mph38 km/h NE
62°17°
680 ft207 m
6:37 AM · 4:34 PM
Thu Nov 12
Red flagsnow, gusty wind
Snow
46°8°33°1°
27% 0.13 in3.2 mm
34 mph54 km/h N
44°7°
-272 ft-83 m
6:39 AM · 4:33 PM
Fri Nov 13
Yellow flaggusty wind, cold
Overcast
40°4°29°-2°
14% 0.03 in0.8 mm
32 mph51 km/h NNW
51°11°
-408 ft-124 m
6:40 AM · 4:32 PM
Sat Nov 14
Yellow flagcold
Overcast
42°6°27°-3°
1%
23 mph37 km/h WNW
57°14°
-195 ft-59 m
6:41 AM · 4:31 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
60°15°
38°4°
45%
29.90 inHg1012 hPa
1,050 ft320 m
1.188
35
74°24°
15 mph24 km/h W · gusts 26 mph42 km/h
0%
61°16°
39°4°
45%
29.91 inHg1013 hPa
1,091 ft333 m
1.186
36
72°22°
16 mph26 km/h WNW · gusts 27 mph44 km/h
0%
60°16°
37°3°
41%
29.93 inHg1014 hPa
1,049 ft320 m
1.188
32
69°20°
14 mph23 km/h WNW · gusts 25 mph40 km/h
0%
57°14°
37°3°
46%
29.93 inHg1014 hPa
828 ft252 m
1.196
32
60°16°
11 mph18 km/h WNW · gusts 24 mph39 km/h
0%
52°11°
34°1°
50%
29.95 inHg1014 hPa
504 ft154 m
1.207
30
52°11°
8 mph13 km/h WNW · gusts 17 mph27 km/h
0%
49°10°
35°2°
57%
29.95 inHg1014 hPa
304 ft93 m
1.214
30
49°10°
8 mph13 km/h WNW · gusts 18 mph30 km/h
0%
48°9°
35°2°
61%
29.96 inHg1015 hPa
195 ft59 m
1.218
31
48°9°
9 mph14 km/h WNW · gusts 19 mph30 km/h
0%
46°8°
36°2°
67%
29.99 inHg1016 hPa
70 ft21 m
1.222
32
46°8°
9 mph14 km/h NW · gusts 18 mph28 km/h
0%
45°7°
37°3°
74%
30.02 inHg1017 hPa
-51 ft-16 m
1.227
33
45°7°
8 mph12 km/h NW · gusts 17 mph27 km/h
0%
43°6°
38°3°
81%
30.01 inHg1016 hPa
-160 ft-49 m
1.231
34
43°6°
7 mph12 km/h NW · gusts 17 mph27 km/h
0%
42°6°
38°3°
86%
30.02 inHg1017 hPa
-255 ft-78 m
1.234
35
42°6°
7 mph11 km/h NW · gusts 16 mph25 km/h
0%
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 Great Lakes
Pit box, all week
Every forecast hour for the next seven days at Great Lakes: 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 Great Lakes, and a heads-up three days out.
Typical for November here: highs around 48°9°, lows 33°0°, rain on 26% of days.
Month by month
Average highs and lows, rain days, gusty days, freezing and hot days for all twelve months at Great Lakes, from 5 years of records. Part of Raceway Weather Pro.
ClearTemperature 52°11°Rain chance 0%Wind 8 mph13 km/hWNWTrack temperature 52°11°Density altitude 504 ft154 m
OvercastTemperature 41°5°Rain chance 0%Wind 7 mph11 km/hNWTrack temperature 41°5°Density altitude -353 ft-108 m
Partly cloudyTemperature 38°3°Rain chance 0%Wind 6 mph9 km/hNWTrack temperature 38°3°Density altitude -576 ft-176 m
OvercastTemperature 35°2°Rain chance 0%Wind 5 mph8 km/hWNWTrack temperature 35°2°Density altitude -912 ft-278 m
54°12° 45°7° 30%Red flag
46°8° 33°1° 27%Red flag