Calhoun Falls, South Carolina climate: Normal weather by month, frost dates and records
Calhoun Falls's normal year runs from 32°F January nights to 91°F July afternoons, with 47.0 inches of precipitation and less than an inch of snow (0.6 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.7°C, January lows of 0°C, July highs of 33°C, 1,194 mm of precipitation a year.
- NOAA stationCalhoun Falls
- Station IDUSC00381277
- Location34.09°N 82.59°W
- Elevation530 ft (162 m)
- From the centerunder 1 mile
- Population1,747
On October 23, the normal high in Calhoun Falls is 72°F and the normal low 47°F, and the chance of measurable rain or snow is 22%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Calhoun Falls.
- Jan 54° 32°
- Feb 58° 35°
- Mar 66° 40°
- Apr 74° 49°
- May 81° 58°
- Jun 88° 67°
- Jul 91° 71°
- Aug 90° 69°
- Sep 84° 63°
- Oct 75° 50°
- Nov 65° 40°
- Dec 57° 34°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Calhoun Falls each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 32°F. The most precipitation falls in December (4.71 in), the least in April (3.13 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 54°F | 32°F | 43.3°F | 4.08 | 10 | <1 | 17 | 10 h 10 min |
| February | 58°F | 35°F | 46.3°F | 4.12 | 9 | <1 | 12 | 11 h |
| March | 66°F | 40°F | 53.1°F | 4.54 | 9 | <1 | 7 | 11 h 50 min |
| April | 74°F | 49°F | 61.4°F | 3.13 | 8 | <1 | <1 | 13 h |
| May | 81°F | 58°F | 69.7°F | 3.34 | 8 | 3 | <1 | 13 h 50 min |
| June | 88°F | 67°F | 77.3°F | 4.36 | 10 | 12 | <1 | 14 h 20 min |
| July | 91°F | 71°F | 80.9°F | 4.16 | 9 | 21 | <1 | 14 h 10 min |
| August | 90°F | 69°F | 79.5°F | 4.14 | 9 | 16 | <1 | 13 h 30 min |
| September | 84°F | 63°F | 73.4°F | 3.52 | 7 | 7 | <1 | 12 h 30 min |
| October | 75°F | 50°F | 62.6°F | 3.27 | 6 | <1 | 1 | 11 h 20 min |
| November | 65°F | 40°F | 52.1°F | 3.62 | 8 | <1 | 8 | 10 h 30 min |
| December | 57°F | 34°F | 45.5°F | 4.71 | 10 | <1 | 15 | 9 h 50 min |
| Year (annual) | 74°F | 51°F | 62.1°F | 46.99 | 103 | 60 | 60 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 12°C | 0°C | 6.3°C | 104 mm |
| February | 14°C | 2°C | 7.9°C | 105 mm |
| March | 19°C | 5°C | 11.7°C | 115 mm |
| April | 23°C | 9°C | 16.3°C | 80 mm |
| May | 27°C | 14°C | 20.9°C | 85 mm |
| June | 31°C | 19°C | 25.2°C | 111 mm |
| July | 33°C | 21°C | 27.2°C | 106 mm |
| August | 32°C | 21°C | 26.4°C | 105 mm |
| September | 29°C | 17°C | 23.0°C | 89 mm |
| October | 24°C | 10°C | 17.0°C | 83 mm |
| November | 18°C | 4°C | 11.2°C | 92 mm |
| December | 14°C | 1°C | 7.5°C | 120 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00381277; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Calhoun Falls?
Normal highs sit between 65°F and 85°F in March, April, May, September and October. Of those, October has the fewest days with rain (6).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00381277.
When is the last frost in Calhoun Falls?
In Calhoun Falls, the last spring frost (32°F) comes after March 27 in half of years and after April 11 in one year in ten; the first autumn frost comes before November 7 in half of years and before October 26 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 271 year in 10 after April 11; 9 in 10 after March 8
- First autumn frost, half of years before
- November 71 year in 10 before October 26; 9 in 10 before November 24
NOAA puts the median frost-free season at 226 days, and the season without a hard freeze (28°F) at 253 days.
A hard freeze (28°F) comes after March 13 in half of springs and before November 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Calhoun Falls in zone 8a in ZIP code 29628, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Calhoun Falls's NOAA station is in zone 8b: the coldest night of a typical year reaches 16°F (23 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in South Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00381277; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Calhoun Falls?
In a normal year in Calhoun Falls, 60 days a year reach 90°F (2 of them 100°F or more), 60 nights fall to 32°F or colder and 103 days bring measurable precipitation.
- Days at 90°F or more
- 60a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 60a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 103a normal year
The highest temperature in this station's record (since 1917) is 111°F, on September 8, 1925; the lowest is −2°F, on January 27, 1940.
The wettest calendar year on that record is 1964, with 71.77 in; the snowiest season is 1935–36, with 11.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00381277; records: ACIS (NOAA Regional Climate Centers), station USC00381277. Records use complete months only; a month missing more than three days is left out.
How sunny is Calhoun Falls?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Calhoun Falls, 4.6 kWh per square metre a day. June is the sunniest month (82%) and February the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 2.7 |
| February | 71% | 3.4 |
| March | 74% | 4.4 |
| April | 79% | 5.7 |
| May | 79% | 6.2 |
| June | 82% | 6.5 |
| July | 81% | 6.2 |
| August | 81% | 5.7 |
| September | 80% | 4.9 |
| October | 79% | 4.0 |
| November | 79% | 3.1 |
| December | 73% | 2.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Calhoun Falls need?
A normal year in Calhoun Falls brings 2,914 heating degree days, 46% fewer than the median U.S. place (5,373), and 1,880 cooling degree days, 2.1 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,189 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 673 | 0 |
| February | 523 | 1 |
| March | 377 | 9 |
| April | 157 | 49 |
| May | 35 | 179 |
| June | 2 | 370 |
| July | 0 | 494 |
| August | 0 | 448 |
| September | 10 | 263 |
| October | 136 | 60 |
| November | 394 | 7 |
| December | 607 | 1 |
| Year (annual) | 2,914 | 1,880 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00381277. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Calhoun Falls been warmer than normal lately?
2025 averaged 63.0°F, 0.9°F above the 1991-2020 normal of 62.1°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.2°F | +0.1°F | 46.09 |
| 2022 | 62.2°F | +0.1°F | 49.41 |
| 2023 | 62.8°F | +0.7°F | 46.36 |
| 2024 | 63.7°F | +1.6°F | 49.38 |
| 2025 | 63.0°F | +0.9°F | 47.28 |
Over 63 complete years from 1921 to 2025, the station's annual mean temperature rose at a fitted 1.1°F per century (+0.06°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00381277; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Calhoun Falls's climate compare?
Calhoun Falls is warmer than 25 of the other 72 places with their own NOAA record in South Carolina, and wetter than 22. Across the 7,247 U.S. stations with normals, its annual mean of 62.1°F is warmer than 80%.
In the Köppen classification computed from these normals, Calhoun Falls is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Calhoun Falls share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Tignall, GA498 people · 18 mi SW
- Mount Carmel, SC338 people · 7 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Calhoun Falls's climate
What is the coldest month in Calhoun Falls?
January, with a normal high of 54°F and a normal low of 32°F. The warmest is July (91°F by day, 71°F at night).
Does it snow in Calhoun Falls?
Rarely: NOAA's normal is 0.6 inch a year.
What is the rainiest month in Calhoun Falls?
December, with 4.71 in of precipitation in a normal year; the driest is April with 3.13 in.
What plant hardiness zone is Calhoun Falls in?
The USDA's 2023 map puts Calhoun Falls in zone 8a in ZIP code 29628, the nearest ZIP area. By the same method at Calhoun Falls's NOAA station, the coldest night of a typical year reaches 16°F (23 years, 1991-2020): zone 8b.
How late can frost come in Calhoun Falls?
In half of years the last 32°F night comes after March 27; in one year in ten it comes after April 11. Waiting until April 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- South Carolina climateThe statewide normals and every place in the state
- Elberton, GA16 miles from this station, 60.2°F a year
- McCormick, SC21 miles from this station, 62.5°F a year
- Washington, GA26 miles from this station, 62.2°F a year
- Hartwell, GA27 miles from this station, 61.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made