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Come Fan with UsSunday, June 21, 2026

2015 NASCAR At New Hampshire race day weather forecast: Mainly dry but ...

It is going to be hot and humid across New Hampshire on Sunday. While New Hampshire Motor Speedway will be in between a warm front that moved through on Saturday and a cold front that arrives later on Sunday, the heat and humidity could help spark a shower or storm during the afternoon.

The 5-hour Energy 301 Sprint Cup race starts around 1:30 p.m. ET and it should be mostly dry not only for the start of the race but during. There is a chance of a developing shower or storm as the race goes on and this could cause red flag situations. I still think odds of racing and even finishing at New Hampshire Motor Speedway are around 80 to 85 percent with a slight chance of a delay or two. Radar will need to be monitored during the race.

In case rain is a problem and the forecast changes, follow me on Twitter @NASCAR_WXMAN and like me on Facebook for the latest weather updates through the weekend.

Conditions in Loudon, NH: Click here for Current Weather ConditionsLook at Doppler Radar | Mobile Friendly Site | Mobile Radar

SUNDAY:
12:30 p.m. ET
Sprint Cup Series Pre-race – Partly sunny, chance of iso. storm – temp: 84
1:30 p.m. ET
Sprint Cup Series Race – Partly sunny, chance of iso. storm – temp: 86
2:30 p.m. ET
Sprint Cup Series Race – Partly sunny, chance of iso. storm – temp: 88
3:30 p.m. ET
Sprint Cup Series Race – Partly sunny, chance of iso. storm – temp: 89
4:30 p.m. ET
Sprint Cup Series Race – Partly sunny, chance of iso. storm – temp: 87

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