Iva’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 90°, a January night drops to 33°, and snow is almost unheard of.
A year in Iva at a glance
Each month’s typical high and low, and what it brings.
What stands out about Iva’s climate
Compared with towns across the U.S., with Iva’s place in South Carolina beside it.
What a year in Iva feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 227 frost-free days a year
In half of years the last 32° night comes by March 29 and the first by November 8. Day counts come from NOAA’s station at Hartwell Dam, GA, 10 miles from the town’s center, at about the same height; frost dates and degree days from Anderson Co Airport, 13 miles away.
The 2023 USDA map puts Iva’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 14°. 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 48 inches of rain a year
December is the wettest month and October the driest. Rain falls on about 97 days a year. Snow is rare: about 0.0" in a normal year at Antreville, SC, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Iva
62% 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 Anderson Co Airport.
Living with Iva’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
227 frost-free days in zone 8a. The last frost comes by Mar 29 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 8.
Months with highs of 62–84° and lows of 40° or more: March, April, May, September, October and November. 0.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Iva from natural hazards, river flooding is the largest share (36%); heat waves, cold waves, winter storms and ice storms together are 37%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Iva and similar climates
TownRatings has no climate map of the towns around Iva yet.
Climates most like Iva’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 |
|---|---|---|---|---|
| Iva, SC | 33° | 90° | 48" | 0.0" |
| LaGrange, GA | 33° | 90° | 51" | 0.1" |
| Hamlet, NC | 32° | 91° | 47" | 0.5" |
| Lanett, AL | 33° | 91° | 52" | 0.1" |
| Helena-West Helena, AR | 33° | 91° | 52" | 0.3" |
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 Iva averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.4°).
A smaller shift than in 77% 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 Iva compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Iva’s place among South Carolina’s.
Iva weather by month
Highs, lows and precipitation from NOAA’s grid at Iva’s center; snow, wet days and snow on the ground from Antreville, SC. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 54° | 33° | 4.3" | 0.0" | 9 | 0 | 36° – 50° |
| February | 57° | 36° | 4.1" | 0.0" | 9 | 0 | 39° – 55° |
| March | 65° | 42° | 4.6" | 0.0" | 9 | 0 | 47° – 63° |
| April | 74° | 49° | 3.5" | 0.0" | 9 | 0 | 56° – 65° |
| May | 81° | 58° | 3.6" | 0.0" | 8 | 0 | 64° – 74° |
| June | 87° | 66° | 4.3" | 0.0" | 8 | 0 | 73° – 81° |
| July | 90° | 70° | 4.0" | 0.0" | 7 | 0 | 77° – 84° |
| August | 89° | 69° | 4.3" | 0.0" | 9 | 0 | 75° – 84° |
| September | 83° | 62° | 3.7" | 0.0" | 6 | 0 | 70° – 79° |
| October | 74° | 51° | 3.3" | 0.0" | 6 | 0 | 58° – 67° |
| November | 64° | 40° | 3.8" | 0.0" | 7 | 0 | 47° – 57° |
| December | 56° | 35° | 4.7" | 0.0" | 10 | 0 | 37° – 56° |
| Year | 73° | 51° | 48.1" | 0.0" | 97 | 0 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 37° to 56°. July is the most reliable, staying within 7°.
Where Iva’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 Iva’s center.
- Snow: Antreville, SC.
- Frost dates, heating and cooling: Anderson Co Airport, 13 miles away.
- Freezing nights, 90° and 100° days: Hartwell Dam, GA, 10 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 Iva’s climate
What is the weather like in Iva?
A typical July afternoon reaches 90°, a January night drops to 33°, and snow is almost unheard of. Milder January nights than 77% of U.S. towns; hotter July afternoons than 79% of U.S. towns.
How cold does it get in Iva in winter?
January nights average 33°. About 45 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 36°.
How much snow does Iva get?
About 0.0 inches in a normal winter at Antreville, SC, so most winters see none.
How hot does it get in Iva?
July, with a typical high of 90° and a low of 70°. About 64 days a year reach 90° and 1 reach 100° (Anderson Co Airport).
When is the first and last frost in Iva?
In half of years the last spring frost (32°) comes by March 29 and the first fall frost by November 8, about 227 frost-free days, at Anderson Co Airport.
What growing zone is Iva in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 14°.
What is the best time of year to visit Iva?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, September, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Iva getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 77% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Iva.
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.