Riverdale has chilly winters and hot summers, with very little rain
A typical July afternoon reaches 92°, a January night drops to 21°, and about 23 inches of snow falls in a normal winter.
A year in Riverdale at a glance
Each month’s typical high and low, and what it brings.
What stands out about Riverdale’s climate
Read from where Riverdale sits among Utah’s towns. The page puts what stands out first.
Living with Riverdale’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
180 frost-free days. The last frost comes by Apr 22 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 22.
About 23" a winter over 9 days with an inch or more, most in December. Snow covers the ground about 25 days a year.
Months averaging under 55° run from October through April. Heating is 85% of the year’s heating-and-cooling load.
About 49 days a year reach 90°, and July afternoons average 92°.
The nicest months are May, June and September. 7.3 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →What a year in Riverdale feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
23 inches of snow, 18 of rain and melt
May is the wettest month and July the driest. Rain or snow falls on about 90 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
About 180 frost-free days a year
In half of years the last 32° night comes by April 22 and the first by October 22.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Riverdale and its neighbors
Ogden has the coldest January nights next door (20°) and Roy the hottest July afternoons (92°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Riverdale averaged 1.7° warmer than the 1900s. The biggest change is in March (+3.3°).
A bigger shift than in 84% of U.S. towns.
Change by month
How Riverdale compares
Against every U.S. town on TownTapestry, each counted once, with its place in Utah.
Riverdale weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 37° | 21° | 1.8" | 3.9" | 9 | 9 | 20° – 38° |
| February | 43° | 25° | 1.7" | 4.1" | 10 | 5 | 27° – 42° |
| March | 53° | 33° | 1.9" | 1.7" | 10 | 2 | 38° – 48° |
| April | 61° | 38° | 2.2" | 0.1" | 10 | 0 | 44° – 55° |
| May | 71° | 46° | 2.2" | 0.2" | 9 | 0 | 52° – 63° |
| June | 82° | 55° | 1.2" | 0 | 5 | 0 | 62° – 75° |
| July | 92° | 62° | 0.6" | 0 | 3 | 0 | 68° – 81° |
| August | 90° | 61° | 0.8" | 0 | 4 | 0 | 70° – 79° |
| September | 79° | 51° | 1.3" | 0 | 6 | 0 | 61° – 69° |
| October | 64° | 39° | 1.7" | 0.2" | 7 | 0 | 43° – 58° |
| November | 49° | 30° | 1.3" | 1.3" | 8 | 1 | 32° – 46° |
| December | 38° | 22° | 1.7" | 11.3" | 9 | 8 | 23° – 35° |
| Year | 63° | 40° | 18.2" | 22.8" | 90 | 25 |
Heating and cooling a home in Riverdale
85% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 20° to 38°. September is the most reliable, staying within 8°.
Common questions about Riverdale’s climate
What is the coldest month in Riverdale?
January, with a typical high of 37° and a low of 21°.
What is the hottest month in Riverdale?
July, with a typical high of 92° and a low of 62°. About 49 days a year reach 90°.
How much snow does Riverdale get?
About 23 inches in a normal winter, most of it in December.
When is the first frost in Riverdale?
In half of years the first 32° night comes by October 22, and the last spring frost by April 22.
What is the rainiest month in Riverdale?
May, with 2.2 inches of rain and melted snow. The year totals 18 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Riverdale.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Riverdale itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Weber Basin Pump Plt 3, UT (6 mi, snow) and Ogden Hinkley Airport, UT (2 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.