Allatoona Dam 2 Weather Records (USC00090181)
Record envelope, standing records and threshold days for Allatoona Dam 2 (USC00090181), Georgia, United States, with 75 years of record.
Key Facts for Allatoona Dam 2
- Allatoona Dam 2 (USC00090181) is a weather station in Georgia, United States at 34.16 latitude and -84.73 longitude, 297 m (975 ft) above sea level.
- The station reports from 1952 to 2026, 75 years of record.
- 1,464 records set at Allatoona Dam 2 still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Allatoona Dam 2 tied a daily record high minimum temperature of 20.6 C (69.1 F) on 4 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Georgia, United States, 34.16 latitude, -84.73 longitude.
- Elevation: 297 m (975 ft).
- Period of record: 1952 to 2026, 75 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
10 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 25.6 C (78.1 F) | -21.1 C (-6.0 F) | 25.6 C (78.1 F) | -14.4 C (6.1 F) |
| Feb | 27.8 C (82.0 F) | -16.7 C (1.9 F) | 27.2 C (81.0 F) | -11.1 C (12.0 F) |
| Mar | 31.1 C (88.0 F) | -13.9 C (7.0 F) | 29.4 C (84.9 F) | -3.3 C (26.1 F) |
| Apr | 33.3 C (91.9 F) | -3.3 C (26.1 F) | 30.6 C (87.1 F) | 2.2 C (36.0 F) |
| May | 35.0 C (95.0 F) | 1.7 C (35.1 F) | 32.8 C (91.0 F) | 2.8 C (37.0 F) |
| Jun | 40.0 C (104.0 F) | 6.1 C (43.0 F) | 31.7 C (89.1 F) | 13.3 C (55.9 F) |
| Jul | 41.1 C (106.0 F) | 11.1 C (52.0 F) | n/a | n/a |
| Aug | 39.4 C (102.9 F) | 10.6 C (51.1 F) | 33.9 C (93.0 F) | 17.8 C (64.0 F) |
| Sep | 38.9 C (102.0 F) | 1.1 C (34.0 F) | 33.9 C (93.0 F) | 9.4 C (48.9 F) |
| Oct | 37.2 C (99.0 F) | -8.3 C (17.1 F) | 31.7 C (89.1 F) | 12.2 C (54.0 F) |
| Nov | 29.4 C (84.9 F) | -11.1 C (12.0 F) | n/a | n/a |
| Dec | 26.1 C (79.0 F) | -18.9 C (-2.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1952 | 42 |
| 1953 | 24 |
| 1954 | 54 |
| 1955 | 32 |
| 1956 | 31 |
| 1957 | 27 |
| 1958 | 18 |
| 1959 | 25 |
| 1960 | 32 |
| 1961 | 35 |
| 1962 | 33 |
| 1963 | 32 |
| 1964 | 29 |
| 1965 | 24 |
| 1966 | 26 |
| 1967 | 38 |
| 1968 | 20 |
| 1969 | 18 |
| 1970 | 32 |
| 1971 | 25 |
| 1972 | 17 |
| 1973 | 14 |
| 1974 | 21 |
| 1975 | 12 |
| 1976 | 16 |
| 1977 | 23 |
| 1978 | 15 |
| 1979 | 3 |
| 1988 | 18 |
| 1989 | 25 |
| 1990 | 15 |
| 1991 | 25 |
| 1992 | 17 |
| 1993 | 20 |
| 1994 | 6 |
| 1995 | 14 |
| 1996 | 18 |
| 1997 | 29 |
| 1998 | 23 |
| 1999 | 27 |
| 2000 | 29 |
| 2001 | 8 |
| 2002 | 23 |
| 2003 | 23 |
| 2004 | 10 |
| 2005 | 11 |
| 2006 | 12 |
| 2007 | 28 |
| 2008 | 22 |
| 2009 | 10 |
| 2010 | 36 |
| 2011 | 31 |
| 2012 | 21 |
| 2013 | 18 |
| 2014 | 19 |
| 2015 | 26 |
| 2016 | 15 |
| 2017 | 20 |
| 2018 | 13 |
| 2019 | 29 |
| 2020 | 11 |
| 2021 | 9 |
| 2022 | 14 |
| 2023 | 10 |
| 2024 | 28 |
| 2025 | 21 |
| 2026 | 12 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1991-08-12 | Record daily precipitation | Record daily precipitation 149.6 mm (5.9 in) |
| 2003-01-23 | Record snow depth | Record snow depth 2.5 cm (1.0 in) |
| 2010-02-13 | Record snow depth | Record snow depth 7.6 cm (3.0 in) |
| 2012-07-01 | Record high maximum temperature | Record high maximum temperature 40.6 C (105.1 F) |
| 2012-07-02 | Record high maximum temperature | Record high maximum temperature 41.1 C (106.0 F) |
| 2024-06-30 | Record high minimum temperature | Record high minimum temperature 25.0 C (77.0 F) |
| 2024-09-27 | Record daily precipitation | Record daily precipitation 159.3 mm (6.3 in) |
| 2025-07-02 | Record high minimum temperature | Record high minimum temperature 26.1 C (79.0 F) |
Wettest Day of Each Month
Sep: 159.3 mm (6.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 98.0 mm (3.9 in) | 25 January 1964 |
| Feb | 107.2 mm (4.2 in) | 13 February 2025 |
| Mar | 135.1 mm (5.3 in) | 13 March 1963 |
| Apr | 98.8 mm (3.9 in) | 5 April 1957 |
| May | 77.0 mm (3.0 in) | 20 May 1959 |
| Jun | 71.1 mm (2.8 in) | 17 June 2003 |
| Jul | 135.4 mm (5.3 in) | 11 July 2005 |
| Aug | 149.6 mm (5.9 in) | 12 August 1991 |
| Sep | 159.3 mm (6.3 in) | 27 September 2024 |
| Oct | 114.3 mm (4.5 in) | 1 October 1958 |
| Nov | 85.1 mm (3.4 in) | 22 November 1991 |
| Dec | 137.2 mm (5.4 in) | 12 December 1961 |
Period of Record Coverage
1952 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1952 | 244 | 67% | No |
| 1953 | 365 | 100% | Yes |
| 1954 | 362 | 99% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 364 | 99% | Yes |
| 1957 | 363 | 99% | Yes |
| 1958 | 362 | 99% | Yes |
| 1959 | 362 | 99% | Yes |
| 1960 | 362 | 99% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 361 | 99% | Yes |
| 1965 | 361 | 99% | Yes |
| 1966 | 355 | 97% | Yes |
| 1967 | 360 | 99% | Yes |
| 1968 | 361 | 99% | Yes |
| 1969 | 358 | 98% | Yes |
| 1970 | 363 | 99% | Yes |
| 1971 | 342 | 94% | Yes |
| 1972 | 307 | 84% | No |
| 1973 | 305 | 84% | No |
| 1974 | 307 | 84% | No |
| 1975 | 311 | 85% | No |
| 1976 | 286 | 78% | No |
| 1977 | 318 | 87% | No |
| 1978 | 318 | 87% | No |
| 1979 | 63 | 17% | No |
| 1988 | 300 | 82% | No |
| 1989 | 355 | 97% | Yes |
| 1990 | 345 | 95% | Yes |
| 1991 | 354 | 97% | Yes |
| 1992 | 333 | 91% | Yes |
| 1993 | 358 | 98% | Yes |
| 1994 | 357 | 98% | Yes |
| 1995 | 302 | 83% | No |
| 1996 | 332 | 91% | Yes |
| 1997 | 349 | 96% | Yes |
| 1998 | 352 | 96% | Yes |
| 1999 | 350 | 96% | Yes |
| 2000 | 350 | 96% | Yes |
| 2001 | 350 | 96% | Yes |
| 2002 | 322 | 88% | No |
| 2003 | 295 | 81% | No |
| 2004 | 349 | 95% | Yes |
| 2005 | 279 | 76% | No |
| 2006 | 359 | 98% | Yes |
| 2007 | 362 | 99% | Yes |
| 2008 | 356 | 97% | Yes |
| 2009 | 354 | 97% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 334 | 92% | Yes |
| 2014 | 362 | 99% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 353 | 96% | Yes |
| 2017 | 303 | 83% | No |
| 2018 | 318 | 87% | No |
| 2019 | 308 | 84% | No |
| 2020 | 257 | 70% | No |
| 2021 | 292 | 80% | No |
| 2022 | 275 | 75% | No |
| 2023 | 266 | 73% | No |
| 2024 | 311 | 85% | No |
| 2025 | 285 | 78% | No |
| 2026 | 160 | 44% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 4 October 2026 | Allatoona Dam 2, US | daily high min (Tie, Provisional) | 20.6 C (69.1 F) | tie | 19 years | 3 of 100 (Routine) |
| 16 August 2026 | Allatoona Dam 2, US | daily high min (Tie, Provisional) | 23.9 C (75.0 F) | tie | 28 years | 3 of 100 (Routine) |
| 11 August 2026 | Allatoona Dam 2, US | daily high min | 23.9 C (75.0 F) | 0.6 C (1.1 F) | 16 years | 13 of 100 (Routine) |
| 10 June 2026 | Allatoona Dam 2, US | daily rain | 25.4 mm (1.0 in) | 3.0 mm (0.12 in) | 4 years | 10 of 100 (Routine) |
| 31 May 2026 | Allatoona Dam 2, US | daily high min (Tie) | 20.0 C (68.0 F) | tie | 48 years | 5 of 100 (Routine) |
| 30 May 2026 | Allatoona Dam 2, US | daily high min (Tie) | 20.6 C (69.1 F) | tie | 20 years | 3 of 100 (Routine) |
| 29 May 2026 | Allatoona Dam 2, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 13 years | 2 of 100 (Routine) |
| 25 May 2026 | Allatoona Dam 2, US | daily rain | 44.2 mm (1.7 in) | 7.4 mm (0.29 in) | 71 years | 33 of 100 (Routine) |
| 18 May 2026 | Allatoona Dam 2, US | daily high max (Tie) | 32.8 C (91.0 F) | tie | 11 years | 2 of 100 (Routine) |
| 3 May 2026 | Allatoona Dam 2, US | daily low min | 2.8 C (37.0 F) | 0.5 C (0.9 F) | 64 years | 27 of 100 (Routine) |
| 2 May 2026 | Allatoona Dam 2, US | daily low max (Tie) | 17.2 C (63.0 F) | tie | 63 years | 6 of 100 (Routine) |
| 12 March 2026 | Allatoona Dam 2, US | daily high max | 29.4 C (84.9 F) | 1.1 C (2.0 F) | 36 years | 18 of 100 (Routine) |
| 10 March 2026 | Allatoona Dam 2, US | daily high min | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 16 years | 13 of 100 (Routine) |
| 10 March 2026 | Allatoona Dam 2, US | daily high max (Tie) | 27.2 C (81.0 F) | tie | 16 years | 3 of 100 (Routine) |
| 8 March 2026 | Allatoona Dam 2, US | daily high max | 28.9 C (84.0 F) | 1.1 C (2.0 F) | 69 years | 28 of 100 (Routine) |
| 6 March 2026 | Allatoona Dam 2, US | daily high max | 29.4 C (84.9 F) | 1.6 C (2.9 F) | 71 years | 30 of 100 (Routine) |
| 27 February 2026 | Allatoona Dam 2, US | daily rain | 51.6 mm (2.0 in) | 25.2 mm (1.0 in) | 68 years | 46 of 100 (Notable) |
| 24 February 2026 | Allatoona Dam 2, US | daily low max | -1.1 C (30.0 F) | 0.5 C (0.9 F) | 36 years | 18 of 100 (Routine) |
| 20 February 2026 | Allatoona Dam 2, US | daily high max | 27.2 C (81.0 F) | 3.9 C (7.0 F) | 8 years | 15 of 100 (Routine) |
| 20 February 2026 | Allatoona Dam 2, US | daily high min (Tie) | 12.8 C (55.0 F) | tie | 12 years | 2 of 100 (Routine) |
Climate Trend
36 complete years, 1953 to 2016| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1953 | 16.1 C | +0.38 C |
| 1954 | 16.3 C | +0.57 C |
| 1955 | 15.9 C | +0.17 C |
| 1956 | 16.3 C | +0.61 C |
| 1957 | 16.4 C | +0.65 C |
| 1958 | 14.9 C | -0.85 C |
| 1959 | 15.9 C | +0.15 C |
| 1960 | 14.9 C | -0.81 C |
| 1961 | 15.0 C | -0.70 C |
| 1962 | 15.4 C | -0.30 C |
| 1963 | 14.5 C | -1.18 C |
| 1964 | 15.1 C | -0.58 C |
| 1965 | 15.3 C | -0.40 C |
| 1966 | 14.8 C | -0.90 C |
| 1967 | 14.5 C | -1.16 C |
| 1968 | 14.5 C | -1.23 C |
| 1969 | 14.8 C | -0.86 C |
| 1970 | 15.3 C | -0.39 C |
| 1971 | 15.6 C | -0.06 C |
| 1991 | 16.0 C | +0.25 C |
| 1993 | 15.5 C | -0.20 C |
| 1998 | 17.0 C | +1.34 C |
| 1999 | 16.3 C | +0.63 C |
| 2000 | 15.8 C | +0.11 C |
| 2001 | 16.0 C | +0.34 C |
| 2004 | 16.1 C | +0.44 C |
| 2006 | 16.2 C | +0.49 C |
| 2007 | 16.5 C | +0.82 C |
| 2008 | 15.6 C | -0.13 C |
| 2009 | 15.5 C | -0.22 C |
| 2010 | 15.6 C | -0.13 C |
| 2011 | 16.4 C | +0.73 C |
| 2012 | 16.9 C | +1.22 C |
| 2014 | 15.1 C | -0.58 C |
| 2015 | 16.3 C | +0.55 C |
| 2016 | 16.9 C | +1.16 C |
The annual mean temperature here has risen by 0.14 C (0.05 to 0.24) per decade over 1953 to 2016. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.14 C (0.05 to 0.24) per decade | 0.3 F (0.1 to 0.4) per decade | 1953 to 2016 | 36 | Rise |
| Mean daily maximum | 0.15 C (0.05 to 0.26) per decade | 0.3 F (0.1 to 0.5) per decade | 1953 to 2016 | 36 | Rise |
| Mean daily minimum | 0.13 C (0.02 to 0.24) per decade | 0.24 F (0.04 to 0.43) per decade | 1953 to 2016 | 36 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1952 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 2012 | 36.1 C (97.0 F) | 67 |
| Coldest night (TNn) | -21.1 C (-6.0 F) | 1963 | -12.2 C (10.0 F) | 67 |
| Wettest day (Rx1day) | 159.3 mm (6.3 in) | 2024 | 75.4 mm (3.0 in) | 67 |
| Wettest five days (Rx5day) | 242.4 mm (9.5 in) | 1995 | 111.5 mm (4.4 in) | 67 |
| Longest dry spell (CDD) | 43 days | 2016 | 19 days | 67 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1952 | 40.0 C (104.0 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 39.4 C (102.9 F) |
| 1955 | 35.6 C (96.1 F) |
| 1956 | 36.7 C (98.1 F) |
| 1957 | 39.4 C (102.9 F) |
| 1958 | 38.3 C (100.9 F) |
| 1959 | 36.1 C (97.0 F) |
| 1960 | 36.1 C (97.0 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 36.1 C (97.0 F) |
| 1963 | 35.6 C (96.1 F) |
| 1964 | 38.3 C (100.9 F) |
| 1965 | 34.4 C (93.9 F) |
| 1966 | 37.2 C (99.0 F) |
| 1967 | 33.3 C (91.9 F) |
| 1968 | 38.3 C (100.9 F) |
| 1969 | 37.2 C (99.0 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 35.6 C (96.1 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 35.6 C (96.1 F) |
| 1974 | 33.9 C (93.0 F) |
| 1975 | 36.7 C (98.1 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 40.0 C (104.0 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 27.2 C (81.0 F) |
| 1988 | 37.8 C (100.0 F) |
| 1989 | 34.4 C (93.9 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 34.4 C (93.9 F) |
| 1992 | 36.1 C (97.0 F) |
| 1993 | 38.3 C (100.9 F) |
| 1994 | 34.4 C (93.9 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 39.4 C (102.9 F) |
| 2001 | 33.3 C (91.9 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 33.9 C (93.0 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 33.9 C (93.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 38.9 C (102.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 36.1 C (97.0 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 41.1 C (106.0 F) |
| 2013 | 32.2 C (90.0 F) |
| 2014 | 35.0 C (95.0 F) |
| 2015 | 36.7 C (98.1 F) |
| 2016 | 36.1 C (97.0 F) |
| 2017 | 33.9 C (93.0 F) |
| 2018 | 33.3 C (91.9 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 36.1 C (97.0 F) |
| 2021 | 33.3 C (91.9 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 37.2 C (99.0 F) |
| 2024 | 36.7 C (98.1 F) |
| 2025 | 35.6 C (96.1 F) |
| 2026 | 33.9 C (93.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1952 | -7.2 C (19.0 F) |
| 1953 | -11.7 C (10.9 F) |
| 1954 | -8.9 C (16.0 F) |
| 1955 | -11.7 C (10.9 F) |
| 1956 | -7.2 C (19.0 F) |
| 1957 | -13.3 C (8.1 F) |
| 1958 | -16.7 C (1.9 F) |
| 1959 | -13.3 C (8.1 F) |
| 1960 | -13.9 C (7.0 F) |
| 1961 | -15.0 C (5.0 F) |
| 1962 | -18.9 C (-2.0 F) |
| 1963 | -21.1 C (-6.0 F) |
| 1964 | -12.8 C (9.0 F) |
| 1965 | -13.3 C (8.1 F) |
| 1966 | -20.6 C (-5.1 F) |
| 1967 | -14.4 C (6.1 F) |
| 1968 | -11.7 C (10.9 F) |
| 1969 | -13.9 C (7.0 F) |
| 1970 | -17.8 C (0.0 F) |
| 1971 | -12.8 C (9.0 F) |
| 1972 | -16.7 C (1.9 F) |
| 1973 | -8.3 C (17.1 F) |
| 1974 | -8.9 C (16.0 F) |
| 1975 | -11.7 C (10.9 F) |
| 1976 | -13.3 C (8.1 F) |
| 1977 | -18.9 C (-2.0 F) |
| 1978 | -13.3 C (8.1 F) |
| 1979 | -12.8 C (9.0 F) |
| 1988 | -6.7 C (19.9 F) |
| 1989 | -16.1 C (3.0 F) |
| 1990 | -4.4 C (24.1 F) |
| 1991 | -12.2 C (10.0 F) |
| 1992 | -10.0 C (14.0 F) |
| 1993 | -11.1 C (12.0 F) |
| 1994 | -17.8 C (0.0 F) |
| 1995 | -12.2 C (10.0 F) |
| 1996 | -16.7 C (1.9 F) |
| 1997 | -13.3 C (8.1 F) |
| 1998 | -7.8 C (18.0 F) |
| 1999 | -11.1 C (12.0 F) |
| 2000 | -11.1 C (12.0 F) |
| 2001 | -8.9 C (16.0 F) |
| 2002 | -8.9 C (16.0 F) |
| 2003 | -14.4 C (6.1 F) |
| 2004 | -9.4 C (15.1 F) |
| 2005 | -12.2 C (10.0 F) |
| 2006 | -9.4 C (15.1 F) |
| 2007 | -10.0 C (14.0 F) |
| 2008 | -10.6 C (12.9 F) |
| 2009 | -13.3 C (8.1 F) |
| 2010 | -12.2 C (10.0 F) |
| 2011 | -10.0 C (14.0 F) |
| 2012 | -8.3 C (17.1 F) |
| 2013 | -7.2 C (19.0 F) |
| 2014 | -16.1 C (3.0 F) |
| 2015 | -14.4 C (6.1 F) |
| 2016 | -10.0 C (14.0 F) |
| 2017 | -12.8 C (9.0 F) |
| 2018 | -13.3 C (8.1 F) |
| 2019 | -8.3 C (17.1 F) |
| 2020 | -7.8 C (18.0 F) |
| 2021 | -8.3 C (17.1 F) |
| 2022 | -11.7 C (10.9 F) |
| 2023 | -5.0 C (23.0 F) |
| 2024 | -13.9 C (7.0 F) |
| 2025 | -14.4 C (6.1 F) |
| 2026 | -14.4 C (6.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1952 | 62.0 mm (2.4 in) |
| 1953 | 61.7 mm (2.4 in) |
| 1954 | 80.8 mm (3.2 in) |
| 1955 | 101.6 mm (4.0 in) |
| 1956 | 55.9 mm (2.2 in) |
| 1957 | 98.8 mm (3.9 in) |
| 1958 | 114.3 mm (4.5 in) |
| 1959 | 77.2 mm (3.0 in) |
| 1960 | 40.1 mm (1.6 in) |
| 1961 | 137.2 mm (5.4 in) |
| 1962 | 81.3 mm (3.2 in) |
| 1963 | 135.1 mm (5.3 in) |
| 1964 | 127.8 mm (5.0 in) |
| 1965 | 59.4 mm (2.3 in) |
| 1966 | 73.7 mm (2.9 in) |
| 1967 | 68.3 mm (2.7 in) |
| 1968 | 68.6 mm (2.7 in) |
| 1969 | 68.1 mm (2.7 in) |
| 1970 | 90.2 mm (3.6 in) |
| 1971 | 48.8 mm (1.9 in) |
| 1972 | 73.9 mm (2.9 in) |
| 1973 | 91.7 mm (3.6 in) |
| 1974 | 66.0 mm (2.6 in) |
| 1975 | 55.4 mm (2.2 in) |
| 1976 | 65.8 mm (2.6 in) |
| 1977 | 101.6 mm (4.0 in) |
| 1978 | 68.6 mm (2.7 in) |
| 1979 | 102.9 mm (4.1 in) |
| 1988 | 62.2 mm (2.4 in) |
| 1989 | 79.5 mm (3.1 in) |
| 1990 | 89.9 mm (3.5 in) |
| 1991 | 149.6 mm (5.9 in) |
| 1992 | 51.1 mm (2.0 in) |
| 1993 | 63.2 mm (2.5 in) |
| 1994 | 80.8 mm (3.2 in) |
| 1995 | 87.4 mm (3.4 in) |
| 1996 | 85.6 mm (3.4 in) |
| 1997 | 123.2 mm (4.9 in) |
| 1998 | 60.5 mm (2.4 in) |
| 1999 | 53.3 mm (2.1 in) |
| 2000 | 91.4 mm (3.6 in) |
| 2001 | 56.9 mm (2.2 in) |
| 2002 | 75.4 mm (3.0 in) |
| 2003 | 78.5 mm (3.1 in) |
| 2004 | 86.4 mm (3.4 in) |
| 2005 | 135.4 mm (5.3 in) |
| 2006 | 56.1 mm (2.2 in) |
| 2007 | 61.0 mm (2.4 in) |
| 2008 | 108.0 mm (4.3 in) |
| 2009 | 86.4 mm (3.4 in) |
| 2010 | 56.1 mm (2.2 in) |
| 2011 | 65.0 mm (2.6 in) |
| 2012 | 45.5 mm (1.8 in) |
| 2013 | 76.2 mm (3.0 in) |
| 2014 | 106.7 mm (4.2 in) |
| 2015 | 60.2 mm (2.4 in) |
| 2016 | 41.1 mm (1.6 in) |
| 2017 | 76.2 mm (3.0 in) |
| 2018 | 96.5 mm (3.8 in) |
| 2019 | 101.6 mm (4.0 in) |
| 2020 | 71.9 mm (2.8 in) |
| 2021 | 61.0 mm (2.4 in) |
| 2022 | 51.3 mm (2.0 in) |
| 2023 | 57.2 mm (2.3 in) |
| 2024 | 159.3 mm (6.3 in) |
| 2025 | 107.2 mm (4.2 in) |
| 2026 | 58.4 mm (2.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1952 | 108.7 mm (4.3 in) |
| 1953 | 96.5 mm (3.8 in) |
| 1954 | 90.7 mm (3.6 in) |
| 1955 | 106.7 mm (4.2 in) |
| 1956 | 95.7 mm (3.8 in) |
| 1957 | 127.5 mm (5.0 in) |
| 1958 | 135.7 mm (5.3 in) |
| 1959 | 107.6 mm (4.2 in) |
| 1960 | 91.7 mm (3.6 in) |
| 1961 | 198.4 mm (7.8 in) |
| 1962 | 112.6 mm (4.4 in) |
| 1963 | 168.2 mm (6.6 in) |
| 1964 | 148.4 mm (5.8 in) |
| 1965 | 106.9 mm (4.2 in) |
| 1966 | 143.6 mm (5.7 in) |
| 1967 | 146.5 mm (5.8 in) |
| 1968 | 88.6 mm (3.5 in) |
| 1969 | 101.9 mm (4.0 in) |
| 1970 | 138.5 mm (5.5 in) |
| 1971 | 96.5 mm (3.8 in) |
| 1972 | 139.8 mm (5.5 in) |
| 1973 | 135.7 mm (5.3 in) |
| 1974 | 134.0 mm (5.3 in) |
| 1975 | 78.3 mm (3.1 in) |
| 1976 | 145.5 mm (5.7 in) |
| 1977 | 143.8 mm (5.7 in) |
| 1978 | 89.7 mm (3.5 in) |
| 1979 | 106.7 mm (4.2 in) |
| 1988 | 77.2 mm (3.0 in) |
| 1989 | 190.3 mm (7.5 in) |
| 1990 | 155.9 mm (6.1 in) |
| 1991 | 165.4 mm (6.5 in) |
| 1992 | 76.8 mm (3.0 in) |
| 1993 | 94.2 mm (3.7 in) |
| 1994 | 131.6 mm (5.2 in) |
| 1995 | 242.4 mm (9.5 in) |
| 1996 | 114.1 mm (4.5 in) |
| 1997 | 185.4 mm (7.3 in) |
| 1998 | 111.5 mm (4.4 in) |
| 1999 | 88.9 mm (3.5 in) |
| 2000 | 143.8 mm (5.7 in) |
| 2001 | 141.5 mm (5.6 in) |
| 2002 | 116.9 mm (4.6 in) |
| 2003 | 141.0 mm (5.6 in) |
| 2004 | 89.2 mm (3.5 in) |
| 2005 | 233.7 mm (9.2 in) |
| 2006 | 88.9 mm (3.5 in) |
| 2007 | 65.1 mm (2.6 in) |
| 2008 | 140.0 mm (5.5 in) |
| 2009 | 153.6 mm (6.0 in) |
| 2010 | 95.1 mm (3.7 in) |
| 2011 | 78.9 mm (3.1 in) |
| 2012 | 66.1 mm (2.6 in) |
| 2013 | 103.4 mm (4.1 in) |
| 2014 | 156.5 mm (6.2 in) |
| 2015 | 109.2 mm (4.3 in) |
| 2016 | 73.2 mm (2.9 in) |
| 2017 | 115.1 mm (4.5 in) |
| 2018 | 125.7 mm (4.9 in) |
| 2019 | 101.6 mm (4.0 in) |
| 2020 | 88.0 mm (3.5 in) |
| 2021 | 100.6 mm (4.0 in) |
| 2022 | 76.2 mm (3.0 in) |
| 2023 | 73.7 mm (2.9 in) |
| 2024 | 155.7 mm (6.1 in) |
| 2025 | 154.7 mm (6.1 in) |
| 2026 | 88.7 mm (3.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1952 | 30 days |
| 1953 | 29 days |
| 1954 | 19 days |
| 1955 | 24 days |
| 1956 | 36 days |
| 1957 | 16 days |
| 1958 | 27 days |
| 1959 | 20 days |
| 1960 | 18 days |
| 1961 | 17 days |
| 1962 | 18 days |
| 1963 | 33 days |
| 1964 | 22 days |
| 1965 | 19 days |
| 1966 | 15 days |
| 1967 | 23 days |
| 1968 | 20 days |
| 1969 | 16 days |
| 1970 | 21 days |
| 1971 | 16 days |
| 1972 | 12 days |
| 1973 | 26 days |
| 1974 | 19 days |
| 1975 | 15 days |
| 1976 | 14 days |
| 1977 | 15 days |
| 1978 | 30 days |
| 1979 | 9 days |
| 1988 | 24 days |
| 1989 | 18 days |
| 1990 | 13 days |
| 1991 | 18 days |
| 1992 | 16 days |
| 1993 | 18 days |
| 1994 | 17 days |
| 1995 | 23 days |
| 1996 | 18 days |
| 1997 | 21 days |
| 1998 | 33 days |
| 1999 | 22 days |
| 2000 | 19 days |
| 2001 | 40 days |
| 2002 | 19 days |
| 2003 | 14 days |
| 2004 | 13 days |
| 2005 | 21 days |
| 2006 | 14 days |
| 2007 | 20 days |
| 2008 | 22 days |
| 2009 | 15 days |
| 2010 | 24 days |
| 2011 | 31 days |
| 2012 | 18 days |
| 2013 | 18 days |
| 2014 | 14 days |
| 2015 | 15 days |
| 2016 | 43 days |
| 2017 | 23 days |
| 2018 | 18 days |
| 2019 | 20 days |
| 2020 | 20 days |
| 2021 | 9 days |
| 2022 | 9 days |
| 2023 | 15 days |
| 2024 | 25 days |
| 2025 | 11 days |
| 2026 | 16 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.
Frost Dates and Growing Season
36 years with a frostAcross 36 years with a frost, the median last spring frost at Allatoona Dam 2 falls on 31 March and the median first autumn frost on 4 November, which leaves a median of 218 days between them.
Fitted over all years, the growing season changes by +2.8 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1959 to 2016) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 31 March | n/a | 1 April | n/a | -1.7 days per decade |
| First autumn frost | 4 November | n/a | 4 November | n/a | +1.1 days per decade |
| Growing days | 218 days | n/a | 218 days | n/a | +2.8 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
50 years, 1953 to 2016A day with at least 74.6 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 166.1 mm (6.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 74.6 mm (2.9 in) | |
| 5 years | 98.0 mm (3.9 in) | |
| 10 years | 114.0 mm (4.5 in) | |
| 25 years | 134.6 mm (5.3 in) | |
| 50 years | 150.2 mm (5.9 in) | |
| 100 years | 166.1 mm (6.5 in) | Longer than the 50 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 50 years of values from 1953 to 2016.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 149.6 mm (5.9 in) in 1991; 137.2 mm (5.4 in) in 1961; 135.1 mm (5.3 in) in 1963.
Download the Data
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 (2026-10-14).