Photo: Ntsimp · Public domainCircleville sits near the bottom of U.S. towns for precipitation, with 9 inches a year
In January the night’s low is typically 14°. Seasons differ by 76°, from the coldest nights to the warmest afternoons. Winter nights are cold: in January they are colder than in 87% of U.S. towns. The frost-free window for a garden runs roughly May 23 to September 27.
A year in Circleville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Circleville’s climate
Compared with towns across the U.S., with Circleville’s place in Utah beside it.
What a year in Circleville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 125 frost-free days a year
In half of years the last 32° night comes by May 23 and the first by September 27. Frost and day counts come from NOAA’s station at Circleville, UT, 0.4 miles from the town’s center, at about the same height.
The 2023 USDA map puts Circleville’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −10°. 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 19 inches of snow a winter
Snow, measured at Circleville, UT, falls mostly in January. Precipitation (rain plus melted snow) adds up to 9 inches a year; August is the wettest month and June the driest. Rain or snow falls on about 62 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Circleville
92% 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 Circleville, UT.
Living with Circleville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
125 frost-free days in zone 5b. The last frost comes by May 23 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 27.
Months with highs of 62–84° and lows of 40° or more: June and September. 12 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Circleville from natural hazards, river flooding is the largest share (46%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Circleville and similar climates
TownRatings has no climate map of the towns around Circleville yet.
Climates most like Circleville’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 |
|---|---|---|---|---|
| Circleville, UT | 14° | 89° | 9" | 19" |
| Montrose, CO | 15° | 90° | 10" | 22" |
| Blackfoot, ID | 16° | 88° | 11" | 15" |
| White Rock, NM | 18° | 89° | 13" | 20" |
| Torrington, WY | 14° | 90° | 13" | 31" |
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 Circleville averaged 1.7° warmer than the 1900s. The biggest change is in March (+3.2°).
A bigger shift than in 72% 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 Circleville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Circleville’s place among Utah’s.
Circleville weather by month
Highs, lows and precipitation from NOAA’s grid at Circleville’s center; snow, wet days and snow on the ground from Circleville, UT. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 43° | 14° | 0.5" | 5.8" | 5 | 22° – 35° |
| February | 46° | 18° | 0.6" | 3.7" | 6 | 26° – 39° |
| March | 55° | 25° | 0.7" | 2.8" | 5 | 34° – 45° |
| April | 62° | 30° | 0.6" | 1.5" | 6 | 40° – 52° |
| May | 72° | 36° | 0.7" | 0.0" | 5 | 49° – 58° |
| June | 83° | 44° | 0.5" | 0.0" | 4 | 57° – 68° |
| July | 89° | 51° | 1.0" | 0.0" | 5 | 66° – 74° |
| August | 86° | 50° | 1.2" | 0.0" | 8 | 65° – 73° |
| September | 79° | 41° | 0.9" | 0.0" | 6 | 56° – 64° |
| October | 67° | 31° | 1.0" | 0.8" | 6 | 44° – 55° |
| November | 53° | 21° | 0.5" | 2.2" | 3 | 29° – 44° |
| December | 43° | 14° | 0.6" | 2.6" | 3 | 23° – 34° |
| Year | 65° | 31° | 8.8" | 19.4" | 62 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 29° to 44°. September is the most reliable, staying within 8°.
Where Circleville’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 Circleville’s center.
- Snow: Circleville, UT (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Circleville, UT, 0.4 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 Circleville’s climate
What is the weather like in Circleville?
A typical July afternoon reaches 89°, a January night drops to 14°, and about 19 inches of snow falls in a normal winter. Colder January nights than 87% of U.S. towns; hotter July afternoons than 74% of U.S. towns.
How cold does it get in Circleville in winter?
December nights average 14°. About 186 nights a year reach 32° or below and 7 reach 0° or below. In the coldest December of the last 30 years the month averaged 23°.
How much snow does Circleville get?
About 19 inches in a normal winter at Circleville, UT, most of it in January.
How hot does it get in Circleville?
July, with a typical high of 89° and a low of 51°. About 35 days a year reach 90° and 1 reach 100° (Circleville, UT).
When is the first and last frost in Circleville?
In half of years the last spring frost (32°) comes by May 23 and the first fall frost by September 27, about 125 frost-free days, at Circleville, UT.
What growing zone is Circleville in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −10°.
What is the best time of year to visit Circleville?
By one simple rule (highs of 62–84° and lows of 40° or more), June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Circleville getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 72% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Circleville.
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.