Historical weather data, all-time temperature records, and monthly climate averages for Vernal, UT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Vernal sits right in that early spring sweet spot — historically averaging a high of 57° with lows still dipping to a frosty 28°. The date has seen wild swings over 123 years of records, from a balmy 79° in 1959 to a brutal 6° low in 1945. Precipitation is rare today, with only a 9% chance of any and just 3% for snow.
Vernal plays weather hardball — this high desert valley has swung from a scorching 106° in June 1919 all the way down to -38° in January 1937, a range of 144 degrees. A single September storm in 2016 dumped 2.19 inches of rain, and December 2013 buried the area under 16 inches of snow in one day.
Summers are legitimately hot here, with mid-July averaging a 90° high before cooling quickly into fall. Winters are harsh and cold, with January highs barely cracking 27°. If you're timing a visit, May through June and September hit that comfortable middle ground — warm but not baked, and relatively dry outside of the early October wet window.