Photo: Ntsimp · Public domainDry weather: only 13 inches of rain and melted snow a year in Mona, less than in 94% of U.S. towns
Nights in January average 17°. A year here swings 75° from midwinter lows to midsummer highs. Summer afternoons here are warmer than in 87% of U.S. towns. The heating season runs November to April: each of those months averages under 50°.
A year in Mona at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mona’s climate
Compared with towns across the U.S., with Mona’s place in Utah beside it.
What a year in Mona feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 157 frost-free days a year
In half of years the last 32° night comes by May 4 and the first by October 11. Day counts come from NOAA’s station at Nephi, UT, 7 miles from the town’s center, at about the same height; frost dates and degree days from Santaquin Chlorinator, UT, 11 miles away.
The 2023 USDA map puts Mona’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −4°. 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 55 inches of snow a winter
Snow, measured at Santaquin Chlorinator, UT, is heaviest from January through February, about 13 inches a month. Precipitation (rain plus melted snow) adds up to 13 inches a year; April is the wettest month and July the driest. Rain or snow falls on about 74 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Mona
87% of the work is heating, so the furnace matters far more than the air conditioner. 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 Santaquin Chlorinator, UT.
Living with Mona’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
157 frost-free days in zone 6b. The last frost comes by May 4 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 11.
Months with highs of 62–84° and lows of 40° or more: May, June and September.
Parks & trails →Of the yearly building losses FEMA expects in Mona from natural hazards, wildfire is the largest share (40%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Mona and similar climates
TownRatings has no climate map of the towns around Mona yet.
Climates most like Mona’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 |
|---|---|---|---|---|
| Mona, UT | 17° | 92° | 13" | 55" |
| Battlement Mesa, CO | 14° | 91° | 13" | 54" |
| Scottsbluff, NE | 15° | 90° | 15" | 43" |
| Elko, NV | 15° | 90° | 10" | 41" |
| Preston, ID | 14° | 89° | 15" | 52" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Mona averaged 1.2° warmer than the 1900s. The biggest change is in March (+2.8°).
A smaller shift than in 60% 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 Mona compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mona’s place among Utah’s.
Mona weather by month
Highs, lows and precipitation from NOAA’s grid at Mona’s center; snow, wet days and snow on the ground from Santaquin Chlorinator, UT. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 38° | 17° | 1.3" | 13.4" | 8 | 16° – 34° |
| February | 44° | 21° | 1.4" | 13.3" | 7 | 27° – 40° |
| March | 55° | 29° | 1.2" | 6.9" | 8 | 36° – 47° |
| April | 62° | 34° | 1.5" | 3.3" | 8 | 43° – 55° |
| May | 72° | 42° | 1.4" | 0.0" | 7 | 50° – 61° |
| June | 84° | 50° | 0.7" | 0.0" | 4 | 61° – 74° |
| July | 92° | 59° | 0.6" | 0.0" | 3 | 69° – 79° |
| August | 90° | 57° | 0.7" | 0.0" | 4 | 69° – 78° |
| September | 80° | 47° | 1.0" | 0.1" | 5 | 59° – 68° |
| October | 66° | 36° | 1.3" | 0.8" | 6 | 44° – 57° |
| November | 51° | 26° | 1.0" | 5.6" | 6 | 29° – 45° |
| December | 38° | 17° | 1.3" | 11.7" | 8 | 21° – 33° |
| Year | 64° | 36° | 13.4" | 55.1" | 74 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 16° to 34°. September is the most reliable, staying within 9°.
Where Mona’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 Mona’s center.
- Snow: Santaquin Chlorinator, UT.
- Frost dates, heating and cooling: Santaquin Chlorinator, UT, 11 miles away.
- Freezing nights, 90° and 100° days: Nephi, UT, 7 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 Mona’s climate
What is the weather like in Mona?
A typical July afternoon reaches 92°, a January night drops to 17°, and about 55 inches of snow falls in a normal winter. Colder January nights than 75% of U.S. towns; hotter July afternoons than 87% of U.S. towns.
How cold does it get in Mona in winter?
January nights average 17°. About 148 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 16°.
How much snow does Mona get?
About 55 inches in a normal winter at Santaquin Chlorinator, UT, heaviest from January through February, about 13 inches a month.
How hot does it get in Mona?
July, with a typical high of 92° and a low of 59°. About 48 days a year reach 90° and 1 reach 100° (Santaquin Chlorinator, UT).
When is the first and last frost in Mona?
In half of years the last spring frost (32°) comes by May 4 and the first fall frost by October 11, about 157 frost-free days, at Santaquin Chlorinator, UT.
What growing zone is Mona in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −4°.
What is the best time of year to visit Mona?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Mona getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 60% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mona.
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.