Historical weather data, all-time temperature records, and monthly climate averages for Roy, UT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Roy runs mild but variable — average highs of 58° and lows of 36° reflect that classic shoulder-season tension between winter and spring. The range can be dramatic: this date has seen a 79° scorcher back in 2002 and a bitter 26° low as recently as 2023. Rain is possible about a third of the time, but snow? Almost never.
Roy's weather has real teeth on both ends — the mercury has soared to 106° in June 2021 and plunged to -13° in January 1949, a swing of nearly 120 degrees over the station's history. A single August storm in 1951 dumped 3.36 inches of rain in one day, and a January blizzard that same year dropped 9.5 inches of snow.
Roy follows a classic northern Utah pattern: baking summers with highs near 94° in mid-July, cold but not brutal winters topping out around 35° in early January. The wettest stretch comes in late March, so spring travelers should pack accordingly. If you want warmth and dry skies, aim for June through early July before the summer heat peaks.