Over the next 10 days Grantsville tops out around 89° (Thursday) and dips to 54° on the coolest night (Tuesday). Roughly 0.05 in of rain falls over the period, with Wednesday the most likely wet day (36%). Hold onto the patio furniture Friday: gusts could hit 36 mph. No active NWS alerts at the moment — quiet on the hazards front. Right now Grantsville is running about 18° warmer than Rock Springs. Longer view: mountain climate — intense sun, cool nights and snow well beyond 'winter'.
Grantsville, UT · Elev 4,304 ft · 40.60°N, 112.46°W · Utah · Forecast computed for these exact coordinates