Yemassee, SC Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Yemassee's primary NOAA station, YEMASSEE 1 N.
The climate verdict for Yemassee
Water is the standout signal in Yemassee, South Carolina: 53.6 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 64°F. It scores 80/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 76% of them.
- 64°F
- annual average temperature (NOAA normal)
- 80/100
- comfort score, above 76% of station-mapped location scores
- 53.6"
- yearly precipitation total
- 228 days
- growing season, frost-free days
Yemassee: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00389469 · Yemassee, SC 64°F mean · 53.6" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 64°F
- RANK-UPPER #5,900
- PHOTO-FINISH ≈ Atlanta
- PRCP-WET 53.6"
- SWING-MID 32°F
- COMF-TOP 80/100
- LOAD-MIX H/C balanced
- STN-1 USC00389469
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Atlanta, TX (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every SC station list.
- Yemassee (this station) 64°F
- Hot Delano, CA 64°F
- Near Atlanta, TX 64°F
- Near Cherry Point Mc…, NC 64°F
- Near Columbia, SC 64°F
Climate Living Index · Yemassee
Yemassee: 80/100 · grade B
Yemassee publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Yemassee, not an official NOAA rating. Rankings still use Comfort Score 80/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 25 calendar days | 97/100 · A |
| Annual temperature balance | 64.3°F · 3.2° from 67.5°F | 90/100 · A |
| Frost-free season | 228 days/year | 80/100 · B |
| Precipitation balance | 53.6 in · 18.6 from 35 in | 34/100 · F |
Yemassee · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Yemassee is a temperate Köppen climate: Cfa
Coldest-month mean 47.7°F and warmest-month mean 80.1°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 80.1°F
- Coldest month
- 47.7°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · balanced station
Where Yemassee sits across the climate record
Three NOAA fields for Yemassee's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 14% warmest
- Among 6,861 stations, Yemassee sits in the warmer third of annual means.
- Annual precipitation
- Top 12% wettest
- Yemassee's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 87%
- Warmest-to-coldest month gap for Yemassee is compact versus 6,861 complete station-years.
How Yemassee compares across U.S. station-mapped locations
Yemassee's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
80 Top 24% score exceeds 76% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Yemassee's measured station temperature trend
MethodologyAcross 86 complete annual observations from 1896 to 2024, YEMASSEE 1 N warmed at a fitted rate of 0.03°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Yemassee primary station fitted change +0.03 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 59°F (15°C) | 36°F (2°C) | 48°F (9°C) | 3.9" | 14.6 | 0.0 |
| February | 64°F (18°C) | 39°F (4°C) | 51°F (11°C) | 3.7" | 9.6 | 0.0 |
| March | 70°F (21°C) | 44°F (7°C) | 57°F (14°C) | 3.7" | 6.3 | 0.1 |
| April | 77°F (25°C) | 51°F (11°C) | 64°F (18°C) | 3.6" | 0.9 | 2.0 |
| May | 83°F (29°C) | 59°F (15°C) | 71°F (22°C) | 3.5" | 0.0 | 10.0 |
| June | 88°F (31°C) | 67°F (19°C) | 77°F (25°C) | 6.7" | 0.0 | 19.1 |
| July | 90°F (32°C) | 70°F (21°C) | 80°F (27°C) | 6.4" | 0.0 | 25.7 |
| August | 89°F (31°C) | 70°F (21°C) | 79°F (26°C) | 5.5" | 0.0 | 21.5 |
| September | 84°F (29°C) | 64°F (18°C) | 74°F (23°C) | 6.0" | 0.0 | 10.6 |
| October | 76°F (25°C) | 54°F (12°C) | 65°F (18°C) | 4.1" | 1.3 | 0.9 |
| November | 68°F (20°C) | 44°F (7°C) | 56°F (13°C) | 2.8" | 7.5 | 0.0 |
| December | 61°F (16°C) | 38°F (3°C) | 50°F (10°C) | 3.8" | 12.0 | 0.0 |
The year, day by day
The year in Yemassee runs from a mild 36°F around January 11 to 90°F at the peak near July 18, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from July 8 through August 1, covering 25 dates. The broader mild season, normal highs of 70°F or more, runs March 19 to November 7.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 36°F around January 11.
Where the wet dates fall
The likeliest wet date is June 24, when 42% of years recorded at least a hundredth of an inch. The driest is October 26 at 25%. Summed across the calendar, that is about 115 wet dates a year.
The widest day
April 25 carries the biggest normal gap between afternoon and dawn, 26°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Yemassee.
Where Yemassee Stands Nationally
The normal water year runs well above the national norm at roughly 54 inches.
Yemassee earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
9.6 days with precipitation
8.9 days with precipitation
7.9 days with precipitation
7.6 days with precipitation
8.6 days with precipitation
12.9 days with precipitation
12.6 days with precipitation
12.0 days with precipitation
10.1 days with precipitation
7.8 days with precipitation
8.0 days with precipitation
9.5 days with precipitation
Yemassee spreads its precipitation across the year
Neither half of the year dominates here: June through August take 35% of the annual total and December through February 21%, with neither reaching the 35% that would mark a distinct wet season. Yemassee has no dry season to plan around, though it does carry a 32.4°F seasonal spread.
The gap between the wettest and driest month still matters: June averages 6.7" and November 2.8". The three wettest months together take 36% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Yemassee, it arrives in quantity
53.6" of precipitation falls across only about 115 wet days here, averaging 0.46 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 115 a year, 32% of all days
- Average depth per wet day
- 0.46 inches
- Most wet days
- June, about 13
- Fewest wet days
- April, about 8
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
November 6
50% probability date
Last Spring Freeze
March 23
50% probability date
Growing Season
228 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,193
Higher = more heating needed
Cooling Degree Days
1,965
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside SC closest to Yemassee on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (64°F here).
- Atlanta, TX 64°F · 0.0°F off
- Delano, CA 64°F · 0.0°F off
- Kettleman City, CA 64°F · 0.0°F off
- Marshall, TX 64°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (53.6" here), excluding temperature-peer places.
- Alamo, TN 53.6" · 0.0" off
- Mahanoy City, PA 53.6" · 0.0" off
- St Petersburg, FL 53.6" · 0.0" off
- White Springs, FL 53.6" · 0.0" off
Data-derived climate profile
How Yemassee's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Yemassee averages 53.6 inches of precipitation a year. Snowfall is not added to the interpretation because its annual value is missing. The monthly table supplies the seasonal distribution hidden by that annual total.
July and January mark the typical warm and cold ends of the calendar in Yemassee's middle-range seasonal profile. The measured spread is 32.4°F. The annual average is 64°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Yemassee's normal, at 2,193 and 1,965 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
A roughly 228-day frost-free season sits inside this mixed heating-and-cooling profile. Start and end dates matter because both sides of the thermostat register during a normal year.
These labels group NOAA 1991-2020 normals from Yemassee's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Yemassee, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Yemassee's climate
How much rain does Yemassee get? ▼
How many days above 90°F does Yemassee get? ▼
How much energy does heating and cooling require in Yemassee? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Yemassee's primary station: YEMASSEE 1 N (USC00389469). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4579450). Match rule for Yemassee: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Yemassee comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.