Hartwell Dam, GA Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Hartwell Dam's primary NOAA station, HARTWELL DAM.
The climate verdict for Hartwell Dam
Water is the standout signal in Hartwell Dam, Georgia: 50.4 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 62°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.
- 62°F
- annual average temperature (NOAA normal)
- 80/100
- comfort score, above 76% of station-mapped location scores
- 50.4"
- yearly precipitation total
- 232 days
- frost-free growing season
Hartwell Dam: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00094138 · Hartwell Dam, GA 62°F mean · 50.4" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 62°F
- RANK-UPPER #5,420
- PHOTO-FINISH ≈ Bayboro
- PRCP-WET 50.4"
- SWING-MID 38°F
- COMF-TOP 80/100
- LOAD-MIX H/C balanced
- STN-1 USC00094138
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Bayboro, NC (+ 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 GA station list.
- Hartwell Dam (this station) 62°F
- Hot Cloverdale, CA 62°F
- Near Bayboro, NC 62°F
- Near Broken Bow, OK 62°F
- Near Clinton, SC 62°F
Hartwell Dam sits in Georgia, the #6 hottest U.S. state at 63.4°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · Hartwell Dam
Hartwell Dam: 78/100 · grade B
Hartwell Dam publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Hartwell Dam, 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 | 45 calendar days | 92/100 · A |
| Annual temperature balance | 61.8°F · 5.7° from 67.5°F | 82/100 · B |
| Frost-free season | 232 days/year | 82/100 · B |
| Precipitation balance | 50.4 in · 15.4 from 35 in | 46/100 · D |
Hartwell Dam · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Hartwell Dam is a temperate Köppen climate: Cfa
Coldest-month mean 42.7°F and warmest-month mean 80.7°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
- 80.7°F
- Coldest month
- 42.7°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 Hartwell Dam sits across the climate record
Three NOAA fields for Hartwell Dam's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 21% warmest
- Among 6,861 stations, Hartwell Dam sits in the warmer third of annual means.
- Annual precipitation
- Top 19% wettest
- Hartwell Dam's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 73%
- Warmest-to-coldest month gap for Hartwell Dam is compact versus 6,861 complete station-years.
How Hartwell Dam compares across U.S. station-mapped locations
Hartwell Dam'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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 53°F (12°C) | 32°F (0°C) | 43°F (6°C) | 4.5" | 15.7 | 0.0 |
| February | 57°F (14°C) | 35°F (1°C) | 46°F (8°C) | 4.2" | 9.5 | 0.0 |
| March | 64°F (18°C) | 40°F (5°C) | 52°F (11°C) | 4.9" | 4.9 | 0.0 |
| April | 73°F (23°C) | 48°F (9°C) | 61°F (16°C) | 3.6" | 0.3 | 0.0 |
| May | 81°F (27°C) | 58°F (14°C) | 69°F (21°C) | 3.5" | 0.0 | 4.0 |
| June | 88°F (31°C) | 66°F (19°C) | 77°F (25°C) | 4.4" | 0.0 | 15.1 |
| July | 91°F (33°C) | 70°F (21°C) | 81°F (27°C) | 4.3" | 0.0 | 21.6 |
| August | 89°F (32°C) | 69°F (21°C) | 79°F (26°C) | 4.5" | 0.0 | 15.3 |
| September | 83°F (29°C) | 63°F (17°C) | 73°F (23°C) | 3.9" | 0.0 | 7.0 |
| October | 74°F (23°C) | 51°F (11°C) | 62°F (17°C) | 3.6" | 0.0 | 0.6 |
| November | 64°F (18°C) | 40°F (5°C) | 52°F (11°C) | 4.1" | 5.9 | 0.0 |
| December | 56°F (13°C) | 35°F (2°C) | 46°F (8°C) | 4.9" | 8.9 | 0.0 |
The year, day by day
The year in Hartwell Dam runs from a mild 32°F around January 11 to 92°F at the peak near July 11, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 24 through August 7, covering 45 dates. The broader mild season, normal highs of 70°F or more, runs April 4 to October 26.
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 32°F around January 11.
The widest day
April 8 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 Hartwell Dam.
Where Hartwell Dam Stands Nationally
The normal water year runs well above the national norm at roughly 50 inches.
Hartwell Dam 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
Hartwell Dam spreads its precipitation across the year
Neither half of the year dominates here: June through August take 26% of the annual total and December through February 27%, with neither reaching the 35% that would mark a distinct wet season. Hartwell Dam has no dry season to plan around, though it does carry a 38°F seasonal spread.
The gap between the wettest and driest month still matters: March averages 4.9" and May 3.5". The three wettest months together take 28% 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 12
50% probability date
Last Spring Freeze
March 25
50% probability date
Growing Season
232 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,959
Higher = more heating needed
Cooling Degree Days
1,805
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside GA closest to Hartwell Dam 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 (62°F here).
- Bayboro, NC 62°F · 0.0°F off
- Broken Bow, OK 62°F · 0.0°F off
- Clinton, SC 62°F · 0.0°F off
- Cloverdale, CA 62°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (50.4" here), excluding temperature-peer places.
- Henderson, TX 50.4" · 0.0" off
- Shelby, NC 50.4" · 0.0" off
- Harrison, NJ 50.4" · 0.0" off
- Cranford, NJ 50.4" · 0.0" off
Data-derived climate profile
How Hartwell Dam's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Hartwell Dam averages 50.4 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 Hartwell Dam's middle-range seasonal profile. The measured spread is 38.0°F. The annual average is 62°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Hartwell Dam's normal, at 2,959 and 1,805 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 Hartwell Dam'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 Hartwell Dam, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Hartwell Dam's climate
How much rain does Hartwell Dam get? ▼
How many days above 90°F does Hartwell Dam get? ▼
How much energy does heating and cooling require in Hartwell Dam? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Hartwell Dam's primary station: HARTWELL DAM (USC00094138). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Hartwell Dam; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Hartwell Dam 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.