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Come Fan with UsSunday, June 21, 2026

2015 NASCAR at Auto Club Speedway weather forecast: Beautiful weekend weather

Great looking weather expected for NASCAR at Auto Club Speedway

As NASCAR finishes up its three week journey across the Western United States the weather remains warm and picture perfect. Just like Las Vegas and Phoenix, Fontana weather at Auto Club Speedway will be nice, sunny and warm.

A large area of high pressure will keep California nice and dry for the rest of the weekend. Temperatures Saturday will be in the upper 70s to near 80 degrees with plenty of sunshine. Winds will be out of the southwest between 10 to 15 mph.

Sunday’s race day for the Sprint Cup Auto Club 400 will remain very nice with plenty of sunshine, temperatures in the middle 70s and a southwest wind between 5 to 15 mph.

Please follow me on Twitter @NASCAR_WXMAN and like me on Facebook for the latest Weather updates through the weekend.

Conditions in Fontana, CA: Click here for Current Weather Conditions | Look at Doppler Radar | Mobile Friendly Site | Mobile Radar

SATURDAY:
3:30 p.m. EDT
Sprint Cup series final practice – Mostly sunny – temp: 77
4:00 p.m. EDT
Xfinity race – Mostly sunny – temp: 79

SUNDAY:
1:30 p.m. EDT
Sprint Cup pre-race – Partly Sunny– temp: 68
2:30 p.m. EDT
Sprint Cup pre-race – Mostly sunny – temp: 71
3:30 p.m. EDT
Sprint Cup race – Mostly sunny – temp: 74
4:30 p.m. EDT
Sprint Cup race – Mostly sunny – temp: 75
5:30 p.m. EDT
Sprint Cup race – Mostly sunny – temp: 76
6:30 p.m. EDT
Sprint Cup race – Mostly sunny – temp: 76

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