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Built 2026-10-16 (16 October 2026)

Hartwell Dam Weather Records (USC00094138)

Record envelope, standing records and threshold days for Hartwell Dam (USC00094138), Georgia, United States, with 65 years of record.

Key Facts for Hartwell Dam

  • Hartwell Dam (USC00094138) is a weather station in Georgia, United States at 34.34 latitude and -82.84 longitude, 210 m (690 ft) above sea level.
  • The station reports from 1956 to 2020, 65 years of record.
  • 1,464 records set at Hartwell Dam still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Georgia, United States, 34.34 latitude, -82.84 longitude.
  • Elevation: 210 m (690 ft).
  • Period of record: 1956 to 2020, 65 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Hartwell Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Hartwell Dam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Hartwell Dam. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Hartwell Dam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan25.0 C (77.0 F)-13.3 C (8.1 F)n/an/a
Feb27.2 C (81.0 F)-11.7 C (10.9 F)n/an/a
Mar30.0 C (86.0 F)-5.0 C (23.0 F)n/an/a
Apr31.7 C (89.1 F)-0.6 C (30.9 F)n/an/a
May36.1 C (97.0 F)5.0 C (41.0 F)n/an/a
Jun41.7 C (107.1 F)11.7 C (53.1 F)n/an/a
Jul41.1 C (106.0 F)17.2 C (63.0 F)n/an/a
Aug39.4 C (102.9 F)15.6 C (60.1 F)n/an/a
Sep36.7 C (98.1 F)10.0 C (50.0 F)n/an/a
Oct36.1 C (97.0 F)1.1 C (34.0 F)n/an/a
Nov28.3 C (82.9 F)-6.1 C (21.0 F)n/an/a
Dec24.4 C (75.9 F)-7.8 C (18.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Hartwell Dam by the year they were set 1,464 records at Hartwell Dam still stand. 2011 holds the most, with 182. 0501001502002011: 1822012: 1782013: 1622014: 1642015: 1622016: 1442017: 1492018: 1612019: 1332020: 292011201220132014201520162017201820192020
1,464 records at Hartwell Dam still stand. 2011 holds the most, with 182.
Standing records at Hartwell Dam by the year they were set
Year setStanding records
2011182
2012178
2013162
2014164
2015162
2016144
2017149
2018161
2019133
202029

Wettest Day of Each Month

Sep: 195.6 mm (7.7 in)
Record daily precipitation for each month at Hartwell Dam The wettest day on record for each calendar month at Hartwell Dam. The most was 195.6 mm (7.7 in) on 26 September 1956. 050100150200 Jan: 45.7 mm (1.8 in), 11 January 2014 Jan Feb: 57.7 mm (2.3 in), 7 February 2020 Feb Mar: 46.5 mm (1.8 in), 6 March 1959 Mar Apr: 55.6 mm (2.2 in), 16 April 1958 Apr May: 63.5 mm (2.5 in), 5 May 2013 May Jun: 55.9 mm (2.2 in), 6 June 2013 Jun Jul: 100.3 mm (3.9 in), 22 July 2018 Jul Aug: 81.3 mm (3.2 in), 5 August 2011 Aug Sep: 195.6 mm (7.7 in), 26 September 1956 Sep Oct: 118.9 mm (4.7 in), 4 October 2015 Oct Nov: 69.3 mm (2.7 in), 19 November 1957 Nov Dec: 78.7 mm (3.1 in), 23 December 2013 Dec
The wettest day on record for each calendar month at Hartwell Dam. The most was 195.6 mm (7.7 in) on 26 September 1956.
Record daily precipitation for each month at Hartwell Dam
MonthRecord daily precipitation (mm)Date
Jan45.7 mm (1.8 in)11 January 2014
Feb57.7 mm (2.3 in)7 February 2020
Mar46.5 mm (1.8 in)6 March 1959
Apr55.6 mm (2.2 in)16 April 1958
May63.5 mm (2.5 in)5 May 2013
Jun55.9 mm (2.2 in)6 June 2013
Jul100.3 mm (3.9 in)22 July 2018
Aug81.3 mm (3.2 in)5 August 2011
Sep195.6 mm (7.7 in)26 September 1956
Oct118.9 mm (4.7 in)4 October 2015
Nov69.3 mm (2.7 in)19 November 1957
Dec78.7 mm (3.1 in)23 December 2013

Period of Record Coverage

2011 to 2020
Days with data per year at Hartwell Dam 10 years of record at Hartwell Dam, 2011 to 2020. 3 years have data for under 90 percent of days and are left out of rankings: 2011, 2012, 2020. 2011: 299 of 365 days2012: 325 of 366 days2013: 339 of 365 days2014: 365 of 365 days2015: 363 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 83 of 366 days20152020
10 years of record at Hartwell Dam, 2011 to 2020. 3 years have data for under 90 percent of days and are left out of rankings: 2011, 2012, 2020.
Days with data per year at Hartwell Dam
YearDays with dataShare of yearComplete
201129982%No
201232589%No
201333993%Yes
2014365100%Yes
201536399%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
20208323%No

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1956 to 2020
Yearly extremes at Hartwell Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)201236.7 C (98.0 F)10
Coldest night (TNn)-13.3 C (8.1 F)2014-7.8 C (18.0 F)10
Wettest day (Rx1day)195.6 mm (7.7 in)195666.4 mm (2.6 in)14
Wettest five days (Rx5day)252.7 mm (9.9 in)1956107.1 mm (4.2 in)14
Longest dry spell (CDD)35 days201622 days14

Hottest day (TXx)

Hottest day (TXx) at Hartwell Dam by year The hottest day of the year at Hartwell Dam, 1956 to 2020. The record is 41.7 C (107.1 F) in 2012, marked on the chart; the median year is 36.7 C (98.0 F). 25303540451960198020002020Record: 41.7 C (107.1 F) in 2012
The hottest day of the year at Hartwell Dam, 1956 to 2020. The record is 41.7 C (107.1 F) in 2012, marked on the chart; the median year is 36.7 C (98.0 F).
Hottest day (TXx) at Hartwell Dam by year
YearHottest day (TXx)
1956n/a
1957n/a
1958n/a
1959n/a
201139.4 C (102.9 F)
201241.7 C (107.1 F)
201334.4 C (93.9 F)
201435.6 C (96.1 F)
201537.2 C (99.0 F)
201637.8 C (100.0 F)
201737.2 C (99.0 F)
201835.6 C (96.1 F)
201936.1 C (97.0 F)
202028.3 C (82.9 F)

Coldest night (TNn)

Coldest night (TNn) at Hartwell Dam by year The coldest night of the year at Hartwell Dam, 1956 to 2020. The record is -13.3 C (8.1 F) in 2014, marked on the chart; the median year is -7.8 C (18.0 F). -15-12.5-10-7.5-5-2.51960198020002020Record: -13.3 C (8.1 F) in 2014
The coldest night of the year at Hartwell Dam, 1956 to 2020. The record is -13.3 C (8.1 F) in 2014, marked on the chart; the median year is -7.8 C (18.0 F).
Coldest night (TNn) at Hartwell Dam by year
YearColdest night (TNn)
1956n/a
1957n/a
1958n/a
1959n/a
2011-8.9 C (16.0 F)
2012-7.8 C (18.0 F)
2013-6.1 C (21.0 F)
2014-13.3 C (8.1 F)
2015-11.7 C (10.9 F)
2016-6.1 C (21.0 F)
2017-7.8 C (18.0 F)
2018-12.2 C (10.0 F)
2019-4.4 C (24.1 F)
2020-4.4 C (24.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Hartwell Dam by year The wettest day of the year at Hartwell Dam, 1956 to 2020. The record is 195.6 mm (7.7 in) in 1956, marked on the chart; the median year is 66.4 mm (2.6 in). 501001502001960198020002020Record: 195.6 mm (7.7 in) in 1956
The wettest day of the year at Hartwell Dam, 1956 to 2020. The record is 195.6 mm (7.7 in) in 1956, marked on the chart; the median year is 66.4 mm (2.6 in).
Wettest day (Rx1day) at Hartwell Dam by year
YearWettest day (Rx1day)
1956195.6 mm (7.7 in)
195769.3 mm (2.7 in)
195855.6 mm (2.2 in)
195961.0 mm (2.4 in)
201184.8 mm (3.3 in)
201250.8 mm (2.0 in)
201379.2 mm (3.1 in)
201452.1 mm (2.1 in)
2015118.9 mm (4.7 in)
201650.8 mm (2.0 in)
201797.5 mm (3.8 in)
2018100.3 mm (3.9 in)
201963.5 mm (2.5 in)
202057.7 mm (2.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Hartwell Dam by year The wettest five days of the year at Hartwell Dam, 1956 to 2020. The record is 252.7 mm (9.9 in) in 1956, marked on the chart; the median year is 107.1 mm (4.2 in). 501001502002503001960198020002020Record: 252.7 mm (9.9 in) in 1956
The wettest five days of the year at Hartwell Dam, 1956 to 2020. The record is 252.7 mm (9.9 in) in 1956, marked on the chart; the median year is 107.1 mm (4.2 in).
Wettest five days (Rx5day) at Hartwell Dam by year
YearWettest five days (Rx5day)
1956252.7 mm (9.9 in)
1957108.8 mm (4.3 in)
195874.4 mm (2.9 in)
195978.7 mm (3.1 in)
2011126.3 mm (5.0 in)
201293.2 mm (3.7 in)
2013149.3 mm (5.9 in)
201494.4 mm (3.7 in)
2015158.8 mm (6.3 in)
201684.0 mm (3.3 in)
2017122.4 mm (4.8 in)
2018107.4 mm (4.2 in)
201981.6 mm (3.2 in)
2020106.7 mm (4.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Hartwell Dam by year The longest dry spell of the year at Hartwell Dam, 1956 to 2020. The record is 35 days in 2016, marked on the chart; the median year is 22 days. 0102030401960198020002020Record: 35 days in 2016
The longest dry spell of the year at Hartwell Dam, 1956 to 2020. The record is 35 days in 2016, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Hartwell Dam by year
YearLongest dry spell (CDD)
195625 days
195720 days
195823 days
195915 days
201126 days
201221 days
201314 days
201421 days
201524 days
201635 days
201726 days
201818 days
201929 days
20206 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

  • Data for Hartwell Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Hartwell Dam threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).