NowOvercastTemperature 51°11°Rain chance 8%Wind 8 mph13 km/hESETrack temperature 52°11°
OvercastTemperature 53°11°Rain chance 12%Wind 5 mph8 km/hSETrack temperature 53°12°
OvercastTemperature 53°11°Rain chance 9%Wind 3 mph5 km/hSETrack temperature 53°11°
OvercastTemperature 53°12°Rain chance 8%Wind 5 mph8 km/hSETrack temperature 53°12°
OvercastTemperature 54°12°Rain chance 8%Wind 8 mph13 km/hSSETrack temperature 54°12°
OvercastTemperature 54°12°Rain chance 5%Wind 8 mph12 km/hSSETrack temperature 54°12°
OvercastTemperature 54°12°Rain chance 4%Wind 7 mph11 km/hSSETrack temperature 54°12°
OvercastTemperature 54°12°Rain chance 5%Wind 5 mph9 km/hSSETrack temperature 54°12°
OvercastTemperature 55°13°Rain chance 6%Wind 5 mph8 km/hSTrack temperature 55°13°
OvercastTemperature 55°13°Rain chance 9%Wind 6 mph10 km/hSTrack temperature 55°13°
OvercastTemperature 55°13°Rain chance 9%Wind 5 mph8 km/hSSWTrack temperature 55°13°
OvercastTemperature 55°13°Rain chance 9%Wind 4 mph7 km/hSSWTrack temperature 55°13°
FogTemperature 55°13°Rain chance 9%Wind 6 mph10 km/hSSWTrack temperature 55°13°
FogTemperature 55°13°Rain chance 9%Wind 7 mph11 km/hSWTrack temperature 55°13°
FogTemperature 55°13°Rain chance 9%Wind 3 mph5 km/hSSWTrack temperature 55°13°
FogTemperature 55°13°Rain chance 9%Wind 3 mph5 km/hSSETrack temperature 55°13°
OvercastTemperature 54°12°Rain chance 10%Wind 3 mph4 km/hSETrack temperature 54°12°
OvercastTemperature 55°13°Rain chance 8%Wind 3 mph4 km/hSSETrack temperature 57°14°
OvercastTemperature 56°14°Rain chance 9%Wind 7 mph12 km/hSTrack temperature 60°15°
OvercastTemperature 58°14°Rain chance 8%Wind 7 mph11 km/hSSWTrack temperature 65°18°
OvercastTemperature 59°15°Rain chance 7%Wind 7 mph11 km/hSSETrack temperature 69°21°
Mostly clearTemperature 61°16°Rain chance 7%Wind 7 mph11 km/hSSETrack temperature 74°24°
OvercastTemperature 64°18°Rain chance 6%Wind 8 mph13 km/hSSETrack temperature 78°25°
Mostly clearTemperature 65°18°Rain chance 5%Wind 10 mph16 km/hSSETrack temperature 76°25°
Hours in your time zone (the track's when they match). Track temperature is an estimate.
Pit box
The racer numbers
Density altitude527ft161mField elevation 958 ft
Air density1.206kg/m³98.5% of standard (RAD)
Water grains54grgrains per lb of dry air
Track temp (est.)52°F11°CDirt in 30 W/m² sun
Dew point49°F10°C93% humidity
Barometer30.21inHg1023hPaFalling over 3 h
SurfaceTackyTacky: some moisture in the top layer
Rain, last 48 h0.06in1.4mmat the track
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.
This week
Day by day
TodayOct 3154°12°46°8° 34%Green flag
TomorrowNov 165°18°54°12° 10%Green flag
MonNov 263°17°56°13° 100%Red flag
TueNov 364°18°42°5° 92%Yellow flag
WedNov 451°10°44°7° 47%Yellow flag
ThuNov 559°15°49°10° 15%Green flag
FriNov 656°13°45°7° 6%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Oct 31
Green flag
Fog
54°12°46°8°
34% 0.06 in1.4 mm
20 mph32 km/h SE
54°12°
686 ft209 m
7:46 AM · 6:01 PM
Tomorrow Nov 1
Green flag
Overcast
65°18°54°12°
10%
19 mph31 km/h S
78°25°
1,441 ft439 m
6:47 AM · 5:00 PM
Mon Nov 2
Red flagrain, gusty wind
Rain
63°17°56°13°
100% 0.37 in9.4 mm
43 mph70 km/h SSE
62°17°
1,928 ft588 m
6:49 AM · 4:58 PM
Tue Nov 3
Yellow flaggusty wind
Drizzle
64°18°42°5°
92% 0.19 in4.8 mm
36 mph57 km/h SSW
63°17°
2,062 ft628 m
6:50 AM · 4:57 PM
Wed Nov 4
Yellow flaggusty wind
Overcast
51°10°44°7°
47%
30 mph49 km/h W
52°11°
1,092 ft333 m
6:52 AM · 4:55 PM
Thu Nov 5
Green flag
Overcast
59°15°49°10°
15%
20 mph33 km/h N
71°22°
1,146 ft349 m
6:53 AM · 4:54 PM
Fri Nov 6
Green flag
Overcast
56°13°45°7°
6%
9 mph15 km/h ESE
67°20°
1,047 ft319 m
6:55 AM · 4:53 PM
Flags judge the racing hours, 9 am to 10 pm at the track. Days marked partial are at the edge of the forecast.
Today’s remaining 8 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
51°11°
49°10°
93%
30.21 inHg1023 hPa
527 ft161 m
1.206
54
52°11°
8 mph13 km/h ESE · gusts 18 mph29 km/h
8%
53°11°
51°10°
93%
30.22 inHg1023 hPa
592 ft180 m
1.204
56
53°12°
5 mph8 km/h SE · gusts 16 mph25 km/h
12%
53°11°
51°11°
95%
30.19 inHg1022 hPa
626 ft191 m
1.203
57
53°11°
3 mph5 km/h SE · gusts 13 mph22 km/h
9%
53°12°
51°11°
95%
30.21 inHg1023 hPa
635 ft194 m
1.202
58
53°12°
5 mph8 km/h SE · gusts 16 mph25 km/h
8%
54°12°
52°11°
94%
30.21 inHg1023 hPa
686 ft209 m
1.201
59
54°12°
8 mph13 km/h SSE · gusts 16 mph26 km/h
8%
54°12°
52°11°
93%
30.23 inHg1024 hPa
683 ft208 m
1.201
59
54°12°
8 mph12 km/h SSE · gusts 16 mph26 km/h
5%
54°12°
52°11°
93%
30.25 inHg1024 hPa
675 ft206 m
1.201
59
54°12°
7 mph11 km/h SSE · gusts 15 mph25 km/h
4%
54°12°
53°12°
95%
30.25 inHg1025 hPa
685 ft209 m
1.201
61
54°12°
5 mph9 km/h SSE · gusts 14 mph23 km/h
5%
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.
Raceway Weather Pro
Plan the whole week at Cedar Lake
Pit box, all week
Every forecast hour for the next seven days at Cedar Lake: 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 Cedar Lake, and a heads-up three days out.
OvercastTemperature 53°12°Rain chance 8%Wind 5 mph8 km/hSETrack temperature 53°12°
FogTemperature 55°13°Rain chance 9%Wind 6 mph10 km/hSSWTrack temperature 55°13°
Mostly clearTemperature 61°16°Rain chance 7%Wind 7 mph11 km/hSSETrack temperature 74°24°
63°17° 56°13° 100%Red flag
64°18° 42°5° 92%Yellow flag