Photo: Brian Stansberry · CC BY 4.0Summer afternoons in Troy are warmer than in 84% of U.S. towns
Nights in January average 34°. Its January nights stay gentler than in 78% of U.S. towns. Warming shows here too: 0.9° more than in 1901–2000, led by December. The frost-free window for a garden runs roughly March 28 to November 7.
A year in Troy at a glance
Each month’s typical high and low, and what it brings.
What stands out about Troy’s climate
Compared with towns across the U.S., with Troy’s place in South Carolina beside it.
What a year in Troy feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 226 frost-free days a year
In half of years the last 32° night comes by March 28 and the first by November 7. Frost and day counts come from NOAA’s station at Mccormick, SC, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Troy’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 15°. 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 46 inches of rain a year
March is the wettest month and October the driest. Rain falls on about 103 days a year. Snow is rare: about 0.6" in a normal year at Calhoun Falls, SC, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Troy
59% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Mccormick, SC.
Living with Troy’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
226 frost-free days in zone 8a. The last frost comes by Mar 28 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 7.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November.
Parks & trails →Cold waves are 38% of the yearly building losses FEMA expects in Troy from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →Troy and similar climates
TownRatings has no climate map of the towns around Troy yet.
Climates most like Troy’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 |
|---|---|---|---|---|
| Troy, SC | 34° | 91° | 46" | 0.6" |
| Rockingham, NC | 32° | 91° | 47" | 0.5" |
| Cusseta, GA | 36° | 92° | 50" | 0.5" |
| Lindale, TX | 36° | 93° | 46" | 0.7" |
| Stuttgart, AR | 33° | 91° | 50" | 3.3" |
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 Troy averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.1°).
A smaller shift than in 87% 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 Troy compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Troy’s place among South Carolina’s.
Troy weather by month
Highs, lows and precipitation from NOAA’s grid at Troy’s center; snow, wet days and snow on the ground from Calhoun Falls, SC. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 55° | 34° | 4.0" | 0.1" | 10 | 0 | 38° – 51° |
| February | 59° | 37° | 3.9" | 0.3" | 9 | 0 | 40° – 56° |
| March | 67° | 43° | 4.5" | 0.1" | 9 | 0 | 48° – 63° |
| April | 75° | 50° | 3.1" | 0.0" | 8 | 0 | 58° – 67° |
| May | 82° | 58° | 3.3" | 0.0" | 8 | 0 | 65° – 75° |
| June | 88° | 66° | 4.3" | 0.0" | 10 | 0 | 73° – 82° |
| July | 91° | 70° | 4.0" | 0.0" | 9 | 0 | 77° – 85° |
| August | 90° | 69° | 4.4" | 0.0" | 9 | 0 | 76° – 85° |
| September | 84° | 63° | 3.6" | 0.0" | 7 | 0 | 71° – 79° |
| October | 75° | 52° | 3.0" | 0.0" | 6 | 0 | 60° – 68° |
| November | 65° | 41° | 3.5" | 0.0" | 8 | 0 | 48° – 58° |
| December | 57° | 36° | 4.5" | 0.1" | 10 | 0 | 38° – 57° |
| Year | 74° | 51° | 46.2" | 0.6" | 103 | 0 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 38° to 57°. July is the most reliable, staying within 8°.
Where Troy’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 Troy’s center.
- Snow: Calhoun Falls, SC.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mccormick, SC, 5 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 Troy’s climate
What is the weather like in Troy?
A typical July afternoon reaches 91°, a January night drops to 34°, and snow is almost unheard of. Milder January nights than 78% of U.S. towns; hotter July afternoons than 84% of U.S. towns.
How cold does it get in Troy in winter?
January nights average 34°. About 58 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 38°.
How much snow does Troy get?
About 0.6 inches in a normal winter at Calhoun Falls, SC, so most winters see none.
How hot does it get in Troy?
July, with a typical high of 91° and a low of 70°. About 79 days a year reach 90° and 5 reach 100° (Mccormick, SC).
When is the first and last frost in Troy?
In half of years the last spring frost (32°) comes by March 28 and the first fall frost by November 7, about 226 frost-free days, at Mccormick, SC.
What growing zone is Troy in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 15°.
What is the best time of year to visit Troy?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Troy getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 87% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Troy.
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.