Granite LDS Ward Chapel-Avard Fairbanks Studio · Photo: Thelivingwest · CC BY-SA 3.0Granite’s winters are colder than most of the U.S.; July afternoons average 83°
A typical July afternoon reaches 83°, a January night drops to 19°.
A year in Granite at a glance
Each month’s typical high and low, and what it brings.
What stands out about Granite’s climate
Compared with towns across the U.S., with Granite’s place in Utah beside it.
What a year in Granite feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 158 frost-free days a year
In half of years the last 32° night comes by May 7 and the first by October 14. Frost and day counts come from NOAA’s station at Mtn Dell Dam, UT, 13 miles from the town’s center, 260 ft higher.
The 2023 USDA map puts Granite’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 2°. 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 29 inches of rain a year
January is the wettest month and July the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Granite
91% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Mtn Dell Dam, UT.
Living with Granite’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
158 frost-free days in zone 7a. The last frost comes by May 7 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 14.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 1.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Granite from natural hazards, avalanches are the largest share (83%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Granite and its neighbors
Sandy the hottest July afternoons (91°, 9° warmer). Differences under a degree are within what the 5 km grid can tell apart. 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 Granite averaged 1.7° warmer than the 1900s. The biggest change is in March (+3.3°).
A bigger shift than in 73% 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 Granite compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Granite’s place among Utah’s.
Granite weather by month
Highs, lows and precipitation from NOAA’s grid at Granite’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 35° | 19° | 3.5" | 20° – 34° |
| February | 39° | 21° | 3.1" | 25° – 37° |
| March | 47° | 27° | 2.8" | 31° – 42° |
| April | 53° | 32° | 3.1" | 37° – 49° |
| May | 62° | 40° | 2.9" | 44° – 56° |
| June | 74° | 48° | 1.5" | 54° – 67° |
| July | 83° | 56° | 0.8" | 61° – 73° |
| August | 81° | 54° | 1.3" | 64° – 73° |
| September | 71° | 47° | 1.9" | 55° – 63° |
| October | 57° | 36° | 2.5" | 39° – 52° |
| November | 44° | 26° | 2.3" | 27° – 42° |
| December | 35° | 19° | 3.2" | 21° – 31° |
| Year | 57° | 35° | 28.9" |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 27° to 42°. September is the most reliable, staying within 9°.
Where Granite’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 Granite’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mtn Dell Dam, UT, 13 miles from the town’s center, 260 ft higher; 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 Granite’s climate
What is the weather like in Granite?
A typical July afternoon reaches 83°, a January night drops to 19°. Colder January nights than 63% of U.S. towns; cooler July afternoons than 73% of U.S. towns.
How cold does it get in Granite in winter?
January nights average 19°. About 158 nights a year reach 32° or below and 5 reach 0° or below. In the coldest January of the last 30 years the month averaged 20°.
How hot does it get in Granite?
July, with a typical high of 83° and a low of 56°. About 29 days a year reach 90° (Mtn Dell Dam, UT).
When is the first and last frost in Granite?
In half of years the last spring frost (32°) comes by May 7 and the first fall frost by October 14, about 158 frost-free days, at Mtn Dell Dam, UT.
What growing zone is Granite in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 2°.
What is the best time of year to visit Granite?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Granite getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 73% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Granite.
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.