Below is the HRRR forecast valid 0300 UTC (9 PM MDT). If this forecast validates, we'll be post-frontal at Rice-Eccles Stadium, with precipitation, in the form of showers and thunderstorms, just to the north.
We are, however, unable to forecast the development and position of showers and thunderstorms with precision at such long lead times. In a best case scenario, those showers and thunderstorms stay north of Rice Eccles and game conditions are fine. In a worst case scenario, we see thunderstorms at the stadium, leading to delays and the like.
It is worth noting that the Storm Prediction Center has us in marginal risk for organized severe storm episodes today and tonight.
Here's their summary...see Northern UT to central WY below.