Barnwell, SC Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Barnwell's primary NOAA station, BARNWELL 5 ENE.
The climate verdict for Barnwell
Water is the standout signal in Barnwell, South Carolina: 48.7 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 65°F. It scores 92/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 92% of them.
- 65°F
- annual average temperature (NOAA normal)
- 92/100
- comfort score, above 92% of station-mapped location scores
- 48.7"
- yearly precipitation total
- 232 days
- frost-free days per growing season
Barnwell: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00380490 · Barnwell, SC 65°F mean · 48.7" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 65°F
- RANK-UPPER #5,969
- PHOTO-FINISH ≈ Big Bend Rch St…
- PRCP-MID 48.7"
- SWING-MID 35°F
- COMF-TOP 92/100
- LOAD-MIX H/C balanced
- STN-1 USC00380490
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Big Bend Rch State Park, 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.
- Barnwell (this station) 65°F
- Hot Florence Rgnl, SC 65°F
- Near Big Bend Rch St…, TX 65°F
- Near Burleson, TX 65°F
- Near Daingerfield, TX 65°F
Climate Living Index · Barnwell
Barnwell: 79/100 · grade B
Barnwell publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Barnwell, not an official NOAA rating. Rankings still use Comfort Score 92/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 64.7°F · 2.8° from 67.5°F | 91/100 · A |
| Frost-free season | 232 days/year | 82/100 · B |
| Normal heat + freeze calendar | 83 calendar days | 81/100 · B |
| Precipitation balance | 48.7 in · 13.7 from 35 in | 52/100 · D |
Barnwell · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Barnwell is a temperate Köppen climate: Cfa
Coldest-month mean 46.8°F and warmest-month mean 81.9°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
- 81.9°F
- Coldest month
- 46.8°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 Barnwell sits across the climate record
Three NOAA fields for Barnwell's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 13% warmest
- Among 6,861 stations, Barnwell sits in the warmer third of annual means.
- Annual precipitation
- Top 22% wettest
- Barnwell's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 82%
- Warmest-to-coldest month gap for Barnwell is compact versus 6,861 complete station-years.
How Barnwell compares across U.S. station-mapped locations
Barnwell's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
92 Top 8% score exceeds 92% 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%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
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) | 35°F (1°C) | 47°F (8°C) | 3.8" | 15.8 | 0.0 |
| February | 63°F (17°C) | 37°F (3°C) | 50°F (10°C) | 3.9" | 10.2 | 0.0 |
| March | 70°F (21°C) | 43°F (6°C) | 56°F (14°C) | 4.2" | 5.6 | 0.2 |
| April | 78°F (26°C) | 50°F (10°C) | 64°F (18°C) | 3.1" | 0.3 | 1.6 |
| May | 85°F (30°C) | 59°F (15°C) | 72°F (22°C) | 3.6" | 0.0 | 8.5 |
| June | 90°F (32°C) | 67°F (20°C) | 79°F (26°C) | 5.5" | 0.0 | 22.1 |
| July | 93°F (34°C) | 71°F (22°C) | 82°F (28°C) | 5.6" | 0.0 | 26.2 |
| August | 92°F (33°C) | 70°F (21°C) | 81°F (27°C) | 5.3" | 0.0 | 23.0 |
| September | 87°F (31°C) | 64°F (18°C) | 75°F (24°C) | 4.3" | 0.0 | 15.8 |
| October | 78°F (26°C) | 53°F (12°C) | 66°F (19°C) | 3.1" | 0.4 | 2.2 |
| November | 69°F (20°C) | 41°F (5°C) | 55°F (13°C) | 2.8" | 7.1 | 0.0 |
| December | 61°F (16°C) | 37°F (3°C) | 49°F (10°C) | 3.8" | 10.7 | 0.0 |
The year, day by day
The year in Barnwell runs from a mild 34°F around January 12 to 93°F at the peak near July 14, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 13 through September 3, covering 83 dates. The broader mild season, normal highs of 70°F or more, runs March 16 to November 11.
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 34°F around January 12.
The widest day
April 20 carries the biggest normal gap between afternoon and dawn, 28°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Barnwell.
Where Barnwell Stands Nationally
Heat is a defining feature of the normals calendar — the normal daily high reaches 90°F on roughly 83 days a year, more than four out of five ranked stations record.
Barnwell 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
Barnwell spreads its precipitation across the year
Neither half of the year dominates here: June through August take 34% of the annual total and December through February 24%, with neither reaching the 35% that would mark a distinct wet season. Barnwell has no dry season to plan around, though it does carry a 35.1°F seasonal spread.
The gap between the wettest and driest month still matters: July averages 5.6" and November 2.8". The three wettest months together take 34% 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.
Frost Dates & Growing Season
First Fall Freeze
November 9
50% probability date
Last Spring Freeze
March 22
50% probability date
Growing Season
232 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,292
Higher = more heating needed
Cooling Degree Days
2,221
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside SC closest to Barnwell 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 (65°F here).
- Burleson, TX 65°F · 0.0°F off
- Daingerfield, TX 65°F · 0.0°F off
- Goldthwaite, TX 65°F · 0.0°F off
- Harper, TX 65°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (48.7" here), excluding temperature-peer places.
- Plainfield, NJ 48.7" · 0.0" off
- Mammoth Spring, AR 48.8" · 0.0" off
- Olney, IL 48.8" · 0.0" off
- Delhi, NY 48.6" · 0.1" off
Data-derived climate profile
How Barnwell's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Barnwell averages 48.7 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 Barnwell's middle-range seasonal profile. The measured spread is 35.1°F. The annual average is 65°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Barnwell's normal, at 2,292 and 2,221 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 232-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 Barnwell'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 Barnwell, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Barnwell's climate
How much rain does Barnwell get? ▼
How many days above 90°F does Barnwell get? ▼
How much energy does heating and cooling require in Barnwell? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Barnwell's primary station: BARNWELL 5 ENE (USC00380490). 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 4504060). Match rule for Barnwell: 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 Barnwell 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.