Bethal Weather Records (SF000068370)
Record envelope, standing records and threshold days for Bethal (SF000068370), South Africa, with 51 years of record.
Key Facts for Bethal
- Bethal (SF000068370) is a weather station in South Africa at -26.47 latitude and 29.45 longitude, 838 m (2,749 ft) above sea level.
- The station reports from 1964 to 2014, 51 years of record.
- 1,464 records set at Bethal still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Bethal tied a daily record high maximum temperature of 30.4 C (86.7 F) on 18 February 2014.
About the Station
- Location: South Africa, -26.47 latitude, 29.45 longitude.
- Elevation: 838 m (2,749 ft).
- Period of record: 1964 to 2014, 51 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 33.7 C (92.7 F) | 4.0 C (39.2 F) | n/a | n/a |
| Feb | 34.4 C (93.9 F) | 6.0 C (42.8 F) | n/a | n/a |
| Mar | 33.3 C (91.9 F) | 0.5 C (32.9 F) | n/a | n/a |
| Apr | 30.0 C (86.0 F) | -1.4 C (29.5 F) | n/a | n/a |
| May | 27.4 C (81.3 F) | -5.9 C (21.4 F) | n/a | n/a |
| Jun | 25.2 C (77.4 F) | -9.2 C (15.4 F) | n/a | n/a |
| Jul | 24.6 C (76.3 F) | -10.6 C (12.9 F) | n/a | n/a |
| Aug | 28.1 C (82.6 F) | -12.5 C (9.5 F) | n/a | n/a |
| Sep | 32.0 C (89.6 F) | -5.6 C (21.9 F) | n/a | n/a |
| Oct | 33.0 C (91.4 F) | -1.2 C (29.8 F) | n/a | n/a |
| Nov | 32.6 C (90.7 F) | 1.0 C (33.8 F) | n/a | n/a |
| Dec | 33.0 C (91.4 F) | 1.7 C (35.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1964 | 41 |
| 1965 | 55 |
| 1966 | 48 |
| 1967 | 33 |
| 1968 | 65 |
| 1969 | 35 |
| 1970 | 37 |
| 1971 | 25 |
| 1972 | 51 |
| 1973 | 42 |
| 1974 | 34 |
| 1975 | 27 |
| 1976 | 29 |
| 1977 | 33 |
| 1978 | 35 |
| 1979 | 40 |
| 1980 | 24 |
| 1981 | 30 |
| 1982 | 24 |
| 1983 | 58 |
| 1984 | 32 |
| 1985 | 30 |
| 1986 | 17 |
| 1987 | 54 |
| 1988 | 18 |
| 1989 | 48 |
| 1990 | 26 |
| 1991 | 28 |
| 1992 | 62 |
| 1993 | 26 |
| 1994 | 46 |
| 1995 | 38 |
| 1996 | 37 |
| 1997 | 57 |
| 1998 | 78 |
| 1999 | 33 |
| 2000 | 44 |
| 2001 | 16 |
| 2002 | 1 |
| 2003 | 1 |
| 2004 | 4 |
| 2005 | 2 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1995-03-25 | Record daily precipitation | Record daily precipitation 91.0 mm (3.6 in) |
| 1996-07-07 | Record low maximum temperature | Record low maximum temperature 2.4 C (36.3 F) |
| 2000-03-30 | Record daily precipitation | Record daily precipitation 97.0 mm (3.8 in) |
Wettest Day of Each Month
Mar: 97.0 mm (3.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 71.0 mm (2.8 in) | 8 January 1987 |
| Feb | 88.0 mm (3.5 in) | 27 February 1981 |
| Mar | 97.0 mm (3.8 in) | 30 March 2000 |
| Apr | 64.0 mm (2.5 in) | 1 April 1964 |
| May | 54.0 mm (2.1 in) | 3 May 1976 |
| Jun | 40.0 mm (1.6 in) | 4 June 1989 |
| Jul | 25.0 mm (1.0 in) | 1 July 1974 |
| Aug | 29.0 mm (1.1 in) | 8 August 1983 |
| Sep | 56.0 mm (2.2 in) | 30 September 1993 |
| Oct | 61.0 mm (2.4 in) | 18 October 1969 |
| Nov | 83.0 mm (3.3 in) | 12 November 1997 |
| Dec | 87.0 mm (3.4 in) | 8 December 1964 |
Period of Record Coverage
1964 to 2014| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1964 | 335 | 92% | Yes |
| 1965 | 361 | 99% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 364 | 99% | Yes |
| 1969 | 360 | 99% | Yes |
| 1970 | 325 | 89% | No |
| 1971 | 341 | 93% | Yes |
| 1972 | 364 | 99% | Yes |
| 1973 | 329 | 90% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 350 | 96% | Yes |
| 1976 | 307 | 84% | No |
| 1977 | 341 | 93% | Yes |
| 1978 | 353 | 97% | Yes |
| 1979 | 361 | 99% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 264 | 72% | No |
| 1982 | 363 | 99% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 324 | 89% | No |
| 1987 | 332 | 91% | Yes |
| 1988 | 218 | 60% | No |
| 1989 | 333 | 91% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 335 | 92% | Yes |
| 1992 | 363 | 99% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 363 | 99% | Yes |
| 1995 | 333 | 91% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 150 | 41% | No |
| 2002 | 7 | 2% | No |
| 2003 | 15 | 4% | No |
| 2004 | 17 | 5% | No |
| 2005 | 14 | 4% | No |
| 2006 | 1 | 0% | No |
| 2014 | 1 | 0% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 18 February 2014 | Bethal, ZA | daily high max (Tie) | 30.4 C (86.7 F) | tie | 31 years | 3 of 100 (Routine) |
| 2 April 2005 | Bethal, ZA | daily high min | 13.9 C (57.0 F) | 0.2 C (0.4 F) | 16 years | 9 of 100 (Routine) |
| 7 February 2005 | Bethal, ZA | daily low min | 8.4 C (47.1 F) | 1.7 C (3.1 F) | 40 years | 24 of 100 (Routine) |
| 31 December 2004 | Bethal, ZA | daily high min | 16.3 C (61.3 F) | 0.7 C (1.3 F) | 27 years | 15 of 100 (Routine) |
| 31 December 2004 | Bethal, ZA | daily high max | 29.6 C (85.3 F) | 0.1 C (0.2 F) | 25 years | 11 of 100 (Routine) |
| 19 November 2004 | Bethal, ZA | daily high max | 31.6 C (88.9 F) | 1.0 C (1.8 F) | 14 years | 10 of 100 (Routine) |
| 24 July 2004 | Bethal, ZA | daily high max | 23.9 C (75.0 F) | 0.3 C (0.5 F) | 7 years | 7 of 100 (Routine) |
| 1 March 2004 | Bethal, ZA | daily rain | 22.1 mm (0.9 in) | 3.1 mm (0.12 in) | 35 years | 16 of 100 (Routine) |
| 4 February 2003 | Bethal, ZA | daily high min | 16.6 C (61.9 F) | 0.1 C (0.2 F) | 21 years | 10 of 100 (Routine) |
| 27 December 2002 | Bethal, ZA | daily rain | 38.9 mm (1.5 in) | 19.9 mm (0.8 in) | 28 years | 29 of 100 (Routine) |
| 7 November 2002 | Bethal, ZA | monthly low min | 1.0 C (33.8 F) | 2.0 C (3.6 F) | 32 years | 30 of 100 (Routine) |
| 26 May 2001 | Bethal, ZA | daily high max | 23.7 C (74.7 F) | 0.6 C (1.1 F) | 8 years | 7 of 100 (Routine) |
| 20 May 2001 | Bethal, ZA | daily low min | 0.2 C (32.4 F) | 0.1 C (0.2 F) | 20 years | 9 of 100 (Routine) |
| 7 May 2001 | Bethal, ZA | daily low min | -0.7 C (30.7 F) | 0.8 C (1.4 F) | 11 years | 8 of 100 (Routine) |
| 6 May 2001 | Bethal, ZA | daily low max | 13.9 C (57.0 F) | 1.0 C (1.8 F) | 24 years | 13 of 100 (Routine) |
| 6 May 2001 | Bethal, ZA | daily low min | -1.5 C (29.3 F) | 1.5 C (2.7 F) | 8 years | 9 of 100 (Routine) |
| 2 May 2001 | Bethal, ZA | daily low max | 12.4 C (54.3 F) | 1.5 C (2.7 F) | 23 years | 14 of 100 (Routine) |
| 1 May 2001 | Bethal, ZA | daily high min (Tie) | 11.0 C (51.8 F) | tie | 22 years | 2 of 100 (Routine) |
| 1 May 2001 | Bethal, ZA | daily rain (Tie) | 9.0 mm (0.35 in) | tie | 23 years | 2 of 100 (Routine) |
| 30 April 2001 | Bethal, ZA | daily rain (Tie) | 15.0 mm (0.6 in) | tie | 24 years | 2 of 100 (Routine) |
Climate Trend
23 complete years, 1965 to 2000| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1965 | 15.1 C | -0.26 C |
| 1966 | 15.4 C | +0.13 C |
| 1967 | 14.7 C | -0.65 C |
| 1968 | 15.1 C | -0.21 C |
| 1969 | 15.4 C | +0.10 C |
| 1972 | 15.2 C | -0.16 C |
| 1974 | 14.8 C | -0.47 C |
| 1978 | 15.3 C | 0.00 C |
| 1979 | 15.5 C | +0.20 C |
| 1980 | 15.0 C | -0.34 C |
| 1982 | 15.6 C | +0.28 C |
| 1983 | 16.2 C | +0.84 C |
| 1984 | 15.3 C | -0.01 C |
| 1985 | 15.6 C | +0.30 C |
| 1990 | 15.0 C | -0.28 C |
| 1992 | 15.9 C | +0.61 C |
| 1993 | 15.6 C | +0.33 C |
| 1994 | 14.8 C | -0.53 C |
| 1996 | 15.0 C | -0.27 C |
| 1997 | 15.2 C | -0.13 C |
| 1998 | 15.9 C | +0.59 C |
| 1999 | 15.7 C | +0.43 C |
| 2000 | 14.9 C | -0.42 C |
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1964 to 2014| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 34.4 C (93.9 F) | 1983 | 31.4 C (88.5 F) | 44 |
| Coldest night (TNn) | -12.5 C (9.5 F) | 1976 | -5.5 C (22.1 F) | 44 |
| Wettest day (Rx1day) | 97.0 mm (3.8 in) | 2000 | 53.0 mm (2.1 in) | 43 |
| Wettest five days (Rx5day) | 152.0 mm (6.0 in) | 1975 | 86.5 mm (3.4 in) | 38 |
| Longest dry spell (CDD) | 151 days | 1994 | 50 days | 41 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1964 | 32.1 C (89.8 F) |
| 1965 | 33.0 C (91.4 F) |
| 1966 | 32.4 C (90.3 F) |
| 1967 | 31.0 C (87.8 F) |
| 1968 | 33.0 C (91.4 F) |
| 1969 | 33.7 C (92.7 F) |
| 1970 | 31.3 C (88.3 F) |
| 1971 | 30.6 C (87.1 F) |
| 1972 | 32.3 C (90.1 F) |
| 1973 | 32.6 C (90.7 F) |
| 1974 | 30.0 C (86.0 F) |
| 1975 | 29.5 C (85.1 F) |
| 1976 | 29.3 C (84.7 F) |
| 1977 | 30.7 C (87.3 F) |
| 1978 | 30.0 C (86.0 F) |
| 1979 | 30.5 C (86.9 F) |
| 1980 | 30.7 C (87.3 F) |
| 1981 | 32.0 C (89.6 F) |
| 1982 | 31.6 C (88.9 F) |
| 1983 | 34.4 C (93.9 F) |
| 1984 | 31.7 C (89.1 F) |
| 1985 | 31.2 C (88.2 F) |
| 1986 | 30.5 C (86.9 F) |
| 1987 | 30.5 C (86.9 F) |
| 1988 | 32.1 C (89.8 F) |
| 1989 | 31.4 C (88.5 F) |
| 1990 | 31.3 C (88.3 F) |
| 1991 | 31.8 C (89.2 F) |
| 1992 | 32.9 C (91.2 F) |
| 1993 | 32.9 C (91.2 F) |
| 1994 | 31.4 C (88.5 F) |
| 1995 | 31.8 C (89.2 F) |
| 1996 | 30.6 C (87.1 F) |
| 1997 | 31.9 C (89.4 F) |
| 1998 | 31.8 C (89.2 F) |
| 1999 | 33.3 C (91.9 F) |
| 2000 | 30.3 C (86.5 F) |
| 2001 | 32.6 C (90.7 F) |
| 2002 | 29.0 C (84.2 F) |
| 2003 | 30.3 C (86.5 F) |
| 2004 | 31.6 C (88.9 F) |
| 2005 | 29.3 C (84.7 F) |
| 2006 | 27.0 C (80.6 F) |
| 2014 | 30.4 C (86.7 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1964 | -9.2 C (15.4 F) |
| 1965 | -7.0 C (19.4 F) |
| 1966 | -6.8 C (19.8 F) |
| 1967 | -7.4 C (18.7 F) |
| 1968 | -7.0 C (19.4 F) |
| 1969 | -4.2 C (24.4 F) |
| 1970 | -2.9 C (26.8 F) |
| 1971 | -5.9 C (21.4 F) |
| 1972 | -7.5 C (18.5 F) |
| 1973 | -4.5 C (23.9 F) |
| 1974 | -5.5 C (22.1 F) |
| 1975 | -5.2 C (22.6 F) |
| 1976 | -12.5 C (9.5 F) |
| 1977 | -5.0 C (23.0 F) |
| 1978 | -6.0 C (21.2 F) |
| 1979 | -6.0 C (21.2 F) |
| 1980 | -5.0 C (23.0 F) |
| 1981 | -4.7 C (23.5 F) |
| 1982 | -4.4 C (24.1 F) |
| 1983 | -3.5 C (25.7 F) |
| 1984 | -3.4 C (25.9 F) |
| 1985 | -6.1 C (21.0 F) |
| 1986 | -3.0 C (26.6 F) |
| 1987 | -5.5 C (22.1 F) |
| 1988 | -5.0 C (23.0 F) |
| 1989 | -7.1 C (19.2 F) |
| 1990 | -7.8 C (18.0 F) |
| 1991 | -6.4 C (20.5 F) |
| 1992 | -10.6 C (12.9 F) |
| 1993 | -6.0 C (21.2 F) |
| 1994 | -8.3 C (17.1 F) |
| 1995 | -4.8 C (23.4 F) |
| 1996 | -6.3 C (20.7 F) |
| 1997 | -5.6 C (21.9 F) |
| 1998 | -6.9 C (19.6 F) |
| 1999 | -5.0 C (23.0 F) |
| 2000 | -8.9 C (16.0 F) |
| 2001 | -1.5 C (29.3 F) |
| 2002 | 1.0 C (33.8 F) |
| 2003 | -2.2 C (28.0 F) |
| 2004 | -1.9 C (28.6 F) |
| 2005 | 1.0 C (33.8 F) |
| 2006 | 13.9 C (57.0 F) |
| 2014 | 10.1 C (50.2 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1964 | 87.0 mm (3.4 in) |
| 1965 | 35.0 mm (1.4 in) |
| 1966 | 64.0 mm (2.5 in) |
| 1967 | 57.0 mm (2.2 in) |
| 1968 | 25.0 mm (1.0 in) |
| 1969 | 61.0 mm (2.4 in) |
| 1970 | 32.0 mm (1.3 in) |
| 1971 | 54.0 mm (2.1 in) |
| 1972 | 66.0 mm (2.6 in) |
| 1973 | 48.0 mm (1.9 in) |
| 1974 | 53.0 mm (2.1 in) |
| 1975 | 58.0 mm (2.3 in) |
| 1976 | 54.0 mm (2.1 in) |
| 1977 | 66.0 mm (2.6 in) |
| 1978 | 49.0 mm (1.9 in) |
| 1979 | 55.0 mm (2.2 in) |
| 1980 | 82.0 mm (3.2 in) |
| 1981 | 88.0 mm (3.5 in) |
| 1982 | 52.0 mm (2.0 in) |
| 1983 | 31.0 mm (1.2 in) |
| 1984 | 41.0 mm (1.6 in) |
| 1985 | 53.0 mm (2.1 in) |
| 1986 | 32.0 mm (1.3 in) |
| 1987 | 71.0 mm (2.8 in) |
| 1988 | 42.0 mm (1.7 in) |
| 1989 | 44.0 mm (1.7 in) |
| 1990 | 61.0 mm (2.4 in) |
| 1991 | 56.0 mm (2.2 in) |
| 1992 | 37.0 mm (1.5 in) |
| 1993 | 68.0 mm (2.7 in) |
| 1994 | 33.0 mm (1.3 in) |
| 1995 | 91.0 mm (3.6 in) |
| 1996 | 75.0 mm (3.0 in) |
| 1997 | 83.0 mm (3.3 in) |
| 1998 | 39.0 mm (1.5 in) |
| 1999 | 53.0 mm (2.1 in) |
| 2000 | 97.0 mm (3.8 in) |
| 2001 | 69.0 mm (2.7 in) |
| 2002 | 38.9 mm (1.5 in) |
| 2003 | 38.1 mm (1.5 in) |
| 2004 | 22.1 mm (0.9 in) |
| 2005 | 2.8 mm (0.11 in) |
| 2006 | 14.0 mm (0.6 in) |
| 2014 | n/a |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1964 | 98.0 mm (3.9 in) |
| 1965 | 52.0 mm (2.0 in) |
| 1966 | 85.0 mm (3.3 in) |
| 1967 | 99.0 mm (3.9 in) |
| 1968 | 56.0 mm (2.2 in) |
| 1969 | 109.0 mm (4.3 in) |
| 1970 | 70.0 mm (2.8 in) |
| 1971 | 80.0 mm (3.1 in) |
| 1972 | 137.0 mm (5.4 in) |
| 1973 | 92.0 mm (3.6 in) |
| 1974 | 87.0 mm (3.4 in) |
| 1975 | 152.0 mm (6.0 in) |
| 1976 | 79.0 mm (3.1 in) |
| 1977 | 101.0 mm (4.0 in) |
| 1978 | 105.0 mm (4.1 in) |
| 1979 | 70.0 mm (2.8 in) |
| 1980 | 132.0 mm (5.2 in) |
| 1981 | 124.0 mm (4.9 in) |
| 1982 | 67.0 mm (2.6 in) |
| 1983 | 86.0 mm (3.4 in) |
| 1984 | 65.0 mm (2.6 in) |
| 1985 | 113.0 mm (4.4 in) |
| 1986 | 61.0 mm (2.4 in) |
| 1987 | 103.0 mm (4.1 in) |
| 1988 | 46.0 mm (1.8 in) |
| 1989 | 83.0 mm (3.3 in) |
| 1990 | 121.0 mm (4.8 in) |
| 1991 | 79.0 mm (3.1 in) |
| 1992 | 60.0 mm (2.4 in) |
| 1993 | 94.0 mm (3.7 in) |
| 1994 | 58.0 mm (2.3 in) |
| 1995 | 135.0 mm (5.3 in) |
| 1996 | 111.0 mm (4.4 in) |
| 1997 | 140.0 mm (5.5 in) |
| 1998 | 68.0 mm (2.7 in) |
| 1999 | 68.0 mm (2.7 in) |
| 2000 | 119.0 mm (4.7 in) |
| 2001 | 69.0 mm (2.7 in) |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2014 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1964 | 46 days |
| 1965 | 48 days |
| 1966 | 72 days |
| 1967 | 43 days |
| 1968 | 49 days |
| 1969 | 67 days |
| 1970 | 39 days |
| 1971 | 81 days |
| 1972 | 83 days |
| 1973 | 91 days |
| 1974 | 43 days |
| 1975 | 45 days |
| 1976 | 46 days |
| 1977 | 71 days |
| 1978 | 88 days |
| 1979 | 31 days |
| 1980 | 112 days |
| 1981 | 54 days |
| 1982 | 48 days |
| 1983 | 43 days |
| 1984 | 38 days |
| 1985 | 59 days |
| 1986 | 86 days |
| 1987 | 50 days |
| 1988 | 89 days |
| 1989 | 49 days |
| 1990 | 39 days |
| 1991 | 94 days |
| 1992 | 106 days |
| 1993 | 84 days |
| 1994 | 151 days |
| 1995 | 54 days |
| 1996 | 42 days |
| 1997 | 26 days |
| 1998 | 146 days |
| 1999 | 110 days |
| 2000 | 67 days |
| 2001 | 28 days |
| 2002 | n/a |
| 2003 | 1 day |
| 2004 | 1 day |
| 2005 | 1 day |
| 2006 | n/a |
| 2014 | n/a |
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
23 years with a frostAcross 23 years with a frost, the median last spring frost at Bethal falls on 27 August and the median first autumn frost on 15 May, which leaves a median of 261 days between them.
| Measure | Median, all years | Earliest period | Recent period (1965 to 2000) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 27 August | n/a | 27 August | n/a | n/a |
| First autumn frost | 15 May | n/a | 15 May | n/a | n/a |
| Growing days | 261 days | n/a | 261 days | n/a | n/a |
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
36 years, 1964 to 2000A day with at least 54.7 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 109.3 mm (4.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 54.7 mm (2.2 in) | |
| 5 years | 72.2 mm (2.8 in) | |
| 10 years | 82.5 mm (3.2 in) | |
| 25 years | 94.3 mm (3.7 in) | |
| 50 years | 102.1 mm (4.0 in) | Longer than the 36 years of record |
| 100 years | 109.3 mm (4.3 in) | Longer than the 36 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, 36 years of values from 1964 to 2000.
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: 97.0 mm (3.8 in) in 2000; 91.0 mm (3.6 in) in 1995; 88.0 mm (3.5 in) in 1981.
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).