Fountain Inn, South Carolina climate: Normal weather by month, frost dates and records
Fountain Inn's normal year runs from 30°F January nights to 90°F July afternoons, with 50.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.8°C, January lows of −1°C, July highs of 32°C, 1,276 mm of precipitation a year.
- NOAA stationFountain Inn (2 mi SW)
- Station IDUSC00383145
- Location34.67°N 82.23°W
- Elevation830 ft (253 m)
- Population13,786
On October 23, the normal high in Fountain Inn is 71°F and the normal low 45°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Fountain Inn.
- Jan 53° 30°
- Feb 57° 33°
- Mar 65° 38°
- Apr 73° 47°
- May 80° 56°
- Jun 87° 64°
- Jul 90° 68°
- Aug 88° 67°
- Sep 83° 61°
- Oct 74° 49°
- Nov 64° 38°
- Dec 56° 33°
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 Fountain Inn each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 30°F. The most precipitation falls in August (4.89 in), the least in October (3.62 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 53°F | 30°F | 41.6°F | 4.35 | – | <1 | 19 | 10 h |
| February | 57°F | 33°F | 45.1°F | 4.00 | – | <1 | 12 | 11 h |
| March | 65°F | 38°F | 51.6°F | 4.47 | – | <1 | 7 | 11 h 50 min |
| April | 73°F | 47°F | 60.1°F | 4.15 | – | <1 | 1 | 13 h |
| May | 80°F | 56°F | 67.9°F | 3.66 | – | 2 | <1 | 14 h |
| June | 87°F | 64°F | 75.5°F | 4.50 | – | 10 | <1 | 14 h 30 min |
| July | 90°F | 68°F | 79.1°F | 4.40 | – | 19 | <1 | 14 h 20 min |
| August | 88°F | 67°F | 77.8°F | 4.89 | – | 13 | <1 | 13 h 30 min |
| September | 83°F | 61°F | 72.0°F | 3.69 | – | 8 | <1 | 12 h 30 min |
| October | 74°F | 49°F | 61.1°F | 3.62 | – | 1 | <1 | 11 h 20 min |
| November | 64°F | 38°F | 50.7°F | 3.86 | – | <1 | 8 | 10 h 20 min |
| December | 56°F | 33°F | 44.1°F | 4.65 | – | <1 | 13 | 9 h 50 min |
| Year (annual) | 72°F | 49°F | 60.5°F | 50.24 | – | 54 | 61 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 12°C | −1°C | 5.3°C | 110 mm |
| February | 14°C | 1°C | 7.3°C | 102 mm |
| March | 18°C | 4°C | 10.9°C | 114 mm |
| April | 23°C | 8°C | 15.6°C | 105 mm |
| May | 26°C | 13°C | 19.9°C | 93 mm |
| June | 30°C | 18°C | 24.2°C | 114 mm |
| July | 32°C | 20°C | 26.2°C | 112 mm |
| August | 31°C | 20°C | 25.4°C | 124 mm |
| September | 28°C | 16°C | 22.2°C | 94 mm |
| October | 23°C | 9°C | 16.2°C | 92 mm |
| November | 18°C | 3°C | 10.4°C | 98 mm |
| December | 13°C | 0°C | 6.7°C | 118 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, West Pelzer (13 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00383145; 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 Fountain Inn?
Normal highs sit between 65°F and 85°F in April, May, September and October.
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 USC00383145.
When is the last frost in Fountain Inn?
In Fountain Inn, the last spring frost (32°F) comes after March 29 in half of years and after April 14 in one year in ten; the first autumn frost comes before November 5 in half of years and before October 24 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 291 year in 10 after April 14; 9 in 10 after March 10
- First autumn frost, half of years before
- November 51 year in 10 before October 24; 9 in 10 before November 20
NOAA puts the median frost-free season at 222 days, and the season without a hard freeze (28°F) at 250 days.
A hard freeze (28°F) comes after March 15 in half of springs and before November 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Fountain Inn in zone 8a in ZIP code 29644, the nearest ZIP area.
Frost dates for every NOAA station in South Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00383145; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Fountain Inn?
In a normal year in Fountain Inn, 54 days a year reach 90°F and 61 nights fall to 32°F or colder.
- Days at 90°F or more
- 54a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 61a normal year
- Days that stay below freezing
- 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00383145.
How sunny is Fountain Inn?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Fountain Inn, 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 Fountain Inn need?
A normal year in Fountain Inn brings 3,210 heating degree days, 40% fewer than the median U.S. place (5,373), and 1,603 cooling degree days, 77% more than 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 4,750 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 727 | 0 |
| February | 559 | 0 |
| March | 420 | 5 |
| April | 181 | 33 |
| May | 51 | 140 |
| June | 2 | 315 |
| July | 0 | 435 |
| August | 0 | 397 |
| September | 21 | 229 |
| October | 168 | 45 |
| November | 434 | 3 |
| December | 648 | 0 |
| Year (annual) | 3,210 | 1,603 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00383145. 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 Fountain Inn been warmer than normal lately?
2023 averaged 62.0°F, 1.5°F above the 1991-2020 normal of 60.5°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.3°F | +0.8°F | 48.76 |
| 2022 | 61.4°F | +0.9°F | 48.83 |
| 2023 | 62.0°F | +1.5°F | 53.42 |
Source: observed years: ACIS, station USC00383145. A year counts only with all twelve months complete.
How does Fountain Inn's climate compare?
Fountain Inn is warmer than 7 of the other 72 places with their own NOAA record in South Carolina, and wetter than 43. Across the 7,247 U.S. stations with normals, its annual mean of 60.5°F is warmer than 76%.
In the Köppen classification computed from these normals, Fountain Inn 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 Fountain Inn share this climate record?
5 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.
- Simpsonville, SC28,078 people · 4 mi NW
- Woodruff, SC5,072 people · 12 mi NE
- Conestee, SC1,175 people · 9 mi NW
- Gray Court, SC802 people · 8 mi SE
- Princeton, SC88 people · 13 mi S
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 Fountain Inn's climate
What is the coldest month in Fountain Inn?
January, with a normal high of 53°F and a normal low of 30°F. The warmest is July (90°F by day, 68°F at night).
Does it snow in Fountain Inn?
Yes. NOAA publishes no 1991-2020 snowfall normal for Fountain Inn's NOAA station; the nearest record that keeps one, West Pelzer (13 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in Fountain Inn?
August, with 4.89 in of precipitation in a normal year; the driest is October with 3.62 in.
What plant hardiness zone is Fountain Inn in?
The USDA's 2023 map puts Fountain Inn in zone 8a in ZIP code 29644, the nearest ZIP area.
How late can frost come in Fountain Inn?
In half of years the last 32°F night comes after March 29; in one year in ten it comes after April 14. Waiting until April 14 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
- West Pelzer, SC13 miles from this station, 60.6°F a year
- Greenville, SC14 miles from this station, 61.4°F a year
- Laurens, SC17 miles from this station, 61.2°F a year
- Spartanburg, SC24 miles from this station, 61.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made