Photo: Nicolas Henderson · CC BY 2.0Magna’s winters are milder but snowier than most of the U.S.
A typical July afternoon reaches 93°, a January night drops to 23°, and about 23 inches of snow falls in a normal winter.
A year in Magna at a glance
Each month’s typical high and low, and what it brings.
What stands out about Magna’s climate
Compared with towns across the U.S., with Magna’s place in Utah beside it.
What a year in Magna feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 213 frost-free days a year
In half of years the last 32° night comes by April 3 and the first by November 4. Frost and day counts come from NOAA’s station at Garfield, UT, 1.9 miles from the town’s center, at about the same height.
The 2023 USDA map puts Magna’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 7°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 23 inches of snow a winter
Snow, measured at Garfield, UT, falls mostly in December. Precipitation (rain plus melted snow) adds up to 14 inches a year; April is the wettest month and July the driest. Rain or snow falls on about 81 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Magna
79% of the work is heating. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Garfield, UT.
Living with Magna’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
213 frost-free days in zone 7b. The last frost comes by Apr 3 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 4.
Months with highs of 62–84° and lows of 40° or more: May, June, September and October. 5.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Magna from natural hazards, earthquakes are the largest share (74%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Magna and its neighbors
Every town next door is within a degree of Magna in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Magna’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Magna, UT | 23° | 93° | 14" | 23" |
| Garden City, ID | 24° | 93° | 13" | 18" |
| Dalhart, TX | 21° | 92° | 16" | 20" |
| Ontario, OR | 23° | 93° | 10" | 15" |
| Gardnerville, NV | 23° | 91° | 11" | 22" |
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 Magna averaged 1.9° warmer than the 1900s. The biggest change is in March (+3.4°).
A bigger shift than in 84% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Magna compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Magna’s place among Utah’s.
Magna weather by month
Highs, lows and precipitation from NOAA’s grid at Magna’s center; snow, wet days and snow on the ground from Garfield, UT. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 38° | 23° | 0.8" | 5.6" | 8 | 20° – 38° |
| February | 44° | 27° | 1.0" | 2.9" | 8 | 29° – 43° |
| March | 55° | 34° | 1.5" | 2.2" | 8 | 40° – 50° |
| April | 62° | 40° | 2.0" | 0.4" | 10 | 46° – 57° |
| May | 72° | 49° | 1.9" | 0.0" | 8 | 54° – 65° |
| June | 83° | 58° | 0.9" | 0.0" | 5 | 64° – 77° |
| July | 93° | 67° | 0.6" | 0.0" | 4 | 70° – 84° |
| August | 91° | 64° | 0.7" | 0.0" | 4 | 72° – 82° |
| September | 80° | 54° | 1.1" | 0.0" | 5 | 63° – 70° |
| October | 65° | 41° | 1.4" | 0.1" | 7 | 45° – 59° |
| November | 50° | 31° | 1.3" | 3.9" | 7 | 33° – 47° |
| December | 39° | 23° | 1.0" | 7.9" | 8 | 24° – 36° |
| Year | 64° | 42° | 14.1" | 23.0" | 81 |
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 7°.
Where Magna’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Magna’s center.
- Snow: Garfield, UT (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Garfield, UT, 1.9 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Magna’s climate
What is the weather like in Magna?
A typical July afternoon reaches 93°, a January night drops to 23°, and about 23 inches of snow falls in a normal winter. Milder January nights than 54% of U.S. towns; hotter July afternoons than 91% of U.S. towns.
How cold does it get in Magna in winter?
January nights average 23°. About 97 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 20°.
How much snow does Magna get?
About 23 inches in a normal winter at Garfield, UT, most of it in December.
How hot does it get in Magna?
July, with a typical high of 93° and a low of 67°. About 58 days a year reach 90° and 6 reach 100° (Garfield, UT).
When is the first and last frost in Magna?
In half of years the last spring frost (32°) comes by April 3 and the first fall frost by November 4, about 213 frost-free days, at Garfield, UT.
What growing zone is Magna in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 7°.
What is the best time of year to visit Magna?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Magna getting warmer?
Yes: 1991–2020 averaged 1.9° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 84% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Magna.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.