Historical weather data, all-time temperature records, and monthly climate averages for Smithfield, UT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Smithfield has a split personality — over 113 years of records, highs have swung from 80° (1959) all the way down to a 12° low (1955). Today typically lands around 57° and 31°, with a 35% chance of rain and a lingering 6% shot at snow still on the table.
Smithfield plays for keeps on the extremes: the thermometer has hit 109° in July and bottomed out at -28° in December, a 137-degree swing over its recorded history. A single August storm once dropped 3.26 inches of rain in one day, and a January blizzard buried the town under 18 inches of snow.
Summer is the main event, with late July averaging a 92° high and June through August all running above 80°. Winters are cold and real — January highs average just 30°, barely above freezing. If you're watching for rain, hold off until late April, which is the wettest stretch of the year.