Historical weather data, all-time temperature records, and monthly climate averages for Riverton, UT. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Riverton runs cool and transitional, with an average high of 59° and low of 35° across 116 years of records. There's a 30% chance of rain today and a lingering 7% shot at snow — not surprising given the date once bottomed out at 17° back in 1982. The upside: it's also hit 76° on this date as recently as 2021.
Riverton has seen the full extremes of Utah's climate, from a scorching 105° in August 1979 to a brutal -20° in February 1982 — a 125-degree swing between the all-time records. A single September storm in 1911 dumped 3.3" of rain, and a January 2013 snowstorm buried the area under 18" in one day.
Summers are hot and dry, peaking mid-July with average highs of 91°, while the coldest stretch runs Christmas through New Year's with highs barely reaching 37°. If you're trying to dodge precipitation, aim for summer — the wettest week of the year is late December, averaging 0.6" of precip. Spring and fall offer the mildest conditions, with April–May and September–October highs in the 60s and 70s.