Built 2026-10-15 (15 October 2026)

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
Daily record high and record low at Bethal, with 2026 drawn through them The band shows the record high and record low for each calendar day at Bethal. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -20-10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Bethal. 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 Bethal, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.7 C (92.7 F)4.0 C (39.2 F)n/an/a
Feb34.4 C (93.9 F)6.0 C (42.8 F)n/an/a
Mar33.3 C (91.9 F)0.5 C (32.9 F)n/an/a
Apr30.0 C (86.0 F)-1.4 C (29.5 F)n/an/a
May27.4 C (81.3 F)-5.9 C (21.4 F)n/an/a
Jun25.2 C (77.4 F)-9.2 C (15.4 F)n/an/a
Jul24.6 C (76.3 F)-10.6 C (12.9 F)n/an/a
Aug28.1 C (82.6 F)-12.5 C (9.5 F)n/an/a
Sep32.0 C (89.6 F)-5.6 C (21.9 F)n/an/a
Oct33.0 C (91.4 F)-1.2 C (29.8 F)n/an/a
Nov32.6 C (90.7 F)1.0 C (33.8 F)n/an/a
Dec33.0 C (91.4 F)1.7 C (35.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Bethal by the year they were set 1,464 records at Bethal still stand. 1998 holds the most, with 78. 0204060801964: 411965: 551966: 481967: 331968: 651969: 351970: 371971: 251972: 511973: 421974: 341975: 271976: 291977: 331978: 351979: 401980: 241981: 301982: 241983: 581984: 321985: 301986: 171987: 541988: 181989: 481990: 261991: 281992: 621993: 261994: 461995: 381996: 371997: 571998: 781999: 332000: 442001: 162002: 12003: 12004: 42005: 2196419691974197919841989199419992004
1,464 records at Bethal still stand. 1998 holds the most, with 78.
Standing records at Bethal by the year they were set
Year setStanding records
196441
196555
196648
196733
196865
196935
197037
197125
197251
197342
197434
197527
197629
197733
197835
197940
198024
198130
198224
198358
198432
198530
198617
198754
198818
198948
199026
199128
199262
199326
199446
199538
199637
199757
199878
199933
200044
200116
20021
20031
20044
20052

All-Time Record Progression

3 new records
When Bethal set new all-time records 3 all-time records were set at Bethal between 25 March 1995 and 30 March 2000. Each dot is a new record. Record daily precipitationRecord low maximum temperature25 March 1995: Record daily precipitation 91.0 mm (3.6 in)7 July 1996: Record low maximum temperature 2.4 C (36.3 F)30 March 2000: Record daily precipitation 97.0 mm (3.8 in)19952000
3 all-time records were set at Bethal between 25 March 1995 and 30 March 2000. Each dot is a new record.
When Bethal set new all-time records
DateKindDetail
1995-03-25Record daily precipitationRecord daily precipitation 91.0 mm (3.6 in)
1996-07-07Record low maximum temperatureRecord low maximum temperature 2.4 C (36.3 F)
2000-03-30Record daily precipitationRecord daily precipitation 97.0 mm (3.8 in)

Wettest Day of Each Month

Mar: 97.0 mm (3.8 in)
Record daily precipitation for each month at Bethal The wettest day on record for each calendar month at Bethal. The most was 97.0 mm (3.8 in) on 30 March 2000. 0255075100 Jan: 71.0 mm (2.8 in), 8 January 1987 Jan Feb: 88.0 mm (3.5 in), 27 February 1981 Feb Mar: 97.0 mm (3.8 in), 30 March 2000 Mar Apr: 64.0 mm (2.5 in), 1 April 1964 Apr May: 54.0 mm (2.1 in), 3 May 1976 May Jun: 40.0 mm (1.6 in), 4 June 1989 Jun Jul: 25.0 mm (1.0 in), 1 July 1974 Jul Aug: 29.0 mm (1.1 in), 8 August 1983 Aug Sep: 56.0 mm (2.2 in), 30 September 1993 Sep Oct: 61.0 mm (2.4 in), 18 October 1969 Oct Nov: 83.0 mm (3.3 in), 12 November 1997 Nov Dec: 87.0 mm (3.4 in), 8 December 1964 Dec
The wettest day on record for each calendar month at Bethal. The most was 97.0 mm (3.8 in) on 30 March 2000.
Record daily precipitation for each month at Bethal
MonthRecord daily precipitation (mm)Date
Jan71.0 mm (2.8 in)8 January 1987
Feb88.0 mm (3.5 in)27 February 1981
Mar97.0 mm (3.8 in)30 March 2000
Apr64.0 mm (2.5 in)1 April 1964
May54.0 mm (2.1 in)3 May 1976
Jun40.0 mm (1.6 in)4 June 1989
Jul25.0 mm (1.0 in)1 July 1974
Aug29.0 mm (1.1 in)8 August 1983
Sep56.0 mm (2.2 in)30 September 1993
Oct61.0 mm (2.4 in)18 October 1969
Nov83.0 mm (3.3 in)12 November 1997
Dec87.0 mm (3.4 in)8 December 1964

Period of Record Coverage

1964 to 2014
Days with data per year at Bethal 44 years of record at Bethal, 1964 to 2014. 12 years have data for under 90 percent of days and are left out of rankings: 1970, 1976, 1981, 1986, 1988, 2001, 2002, 2003 and others. 1964: 335 of 366 days1965: 361 of 365 days1966: 365 of 365 days1967: 364 of 365 days1968: 364 of 366 days1969: 360 of 365 days1970: 325 of 365 days1971: 341 of 365 days1972: 364 of 366 days1973: 329 of 365 days1974: 364 of 365 days1975: 350 of 365 days1976: 307 of 366 days1977: 341 of 365 days1978: 353 of 365 days1979: 361 of 365 days1980: 364 of 366 days1981: 264 of 365 days1982: 363 of 365 days1983: 365 of 365 days1984: 364 of 366 days1985: 365 of 365 days1986: 324 of 365 days1987: 332 of 365 days1988: 218 of 366 days1989: 333 of 365 days1990: 364 of 365 days1991: 335 of 365 days1992: 363 of 366 days1993: 364 of 365 days1994: 363 of 365 days1995: 333 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 364 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 150 of 365 days2002: 7 of 365 days2003: 15 of 365 days2004: 17 of 366 days2005: 14 of 365 days2006: 1 of 365 days2014: 1 of 365 days1970198019902000
44 years of record at Bethal, 1964 to 2014. 12 years have data for under 90 percent of days and are left out of rankings: 1970, 1976, 1981, 1986, 1988, 2001, 2002, 2003 and others.
Days with data per year at Bethal
YearDays with dataShare of yearComplete
196433592%Yes
196536199%Yes
1966365100%Yes
1967364100%Yes
196836499%Yes
196936099%Yes
197032589%No
197134193%Yes
197236499%Yes
197332990%Yes
1974364100%Yes
197535096%Yes
197630784%No
197734193%Yes
197835397%Yes
197936199%Yes
198036499%Yes
198126472%No
198236399%Yes
1983365100%Yes
198436499%Yes
1985365100%Yes
198632489%No
198733291%Yes
198821860%No
198933391%Yes
1990364100%Yes
199133592%Yes
199236399%Yes
1993364100%Yes
199436399%Yes
199533391%Yes
1996366100%Yes
1997365100%Yes
1998364100%Yes
1999364100%Yes
2000366100%Yes
200115041%No
200272%No
2003154%No
2004175%No
2005144%No
200610%No
201410%No

Latest Records

20
Latest records at Bethal
DateStationRecordValueBeat old record byOld record stoodSignificance
18 February 2014Bethal, ZAdaily high max (Tie)30.4 C (86.7 F)tie31 years3 of 100 (Routine)
2 April 2005Bethal, ZAdaily high min13.9 C (57.0 F)0.2 C (0.4 F)16 years9 of 100 (Routine)
7 February 2005Bethal, ZAdaily low min8.4 C (47.1 F)1.7 C (3.1 F)40 years24 of 100 (Routine)
31 December 2004Bethal, ZAdaily high min16.3 C (61.3 F)0.7 C (1.3 F)27 years15 of 100 (Routine)
31 December 2004Bethal, ZAdaily high max29.6 C (85.3 F)0.1 C (0.2 F)25 years11 of 100 (Routine)
19 November 2004Bethal, ZAdaily high max31.6 C (88.9 F)1.0 C (1.8 F)14 years10 of 100 (Routine)
24 July 2004Bethal, ZAdaily high max23.9 C (75.0 F)0.3 C (0.5 F)7 years7 of 100 (Routine)
1 March 2004Bethal, ZAdaily rain22.1 mm (0.9 in)3.1 mm (0.12 in)35 years16 of 100 (Routine)
4 February 2003Bethal, ZAdaily high min16.6 C (61.9 F)0.1 C (0.2 F)21 years10 of 100 (Routine)
27 December 2002Bethal, ZAdaily rain38.9 mm (1.5 in)19.9 mm (0.8 in)28 years29 of 100 (Routine)
7 November 2002Bethal, ZAmonthly low min1.0 C (33.8 F)2.0 C (3.6 F)32 years30 of 100 (Routine)
26 May 2001Bethal, ZAdaily high max23.7 C (74.7 F)0.6 C (1.1 F)8 years7 of 100 (Routine)
20 May 2001Bethal, ZAdaily low min0.2 C (32.4 F)0.1 C (0.2 F)20 years9 of 100 (Routine)
7 May 2001Bethal, ZAdaily low min-0.7 C (30.7 F)0.8 C (1.4 F)11 years8 of 100 (Routine)
6 May 2001Bethal, ZAdaily low max13.9 C (57.0 F)1.0 C (1.8 F)24 years13 of 100 (Routine)
6 May 2001Bethal, ZAdaily low min-1.5 C (29.3 F)1.5 C (2.7 F)8 years9 of 100 (Routine)
2 May 2001Bethal, ZAdaily low max12.4 C (54.3 F)1.5 C (2.7 F)23 years14 of 100 (Routine)
1 May 2001Bethal, ZAdaily high min (Tie)11.0 C (51.8 F)tie22 years2 of 100 (Routine)
1 May 2001Bethal, ZAdaily rain (Tie)9.0 mm (0.35 in)tie23 years2 of 100 (Routine)
30 April 2001Bethal, ZAdaily rain (Tie)15.0 mm (0.6 in)tie24 years2 of 100 (Routine)

Climate Trend

23 complete years, 1965 to 2000
Annual mean temperature at Bethal as warming stripes, 1965 to 2000 One stripe for each of 23 complete years at Bethal, 1965 to 2000. Blue stripes are years cooler than the station's own mean of 15.3 C (59.6 F); red stripes are warmer. The coolest year was 1967, at 14.7 C (58.4 F), and the warmest was 1983, at 16.2 C (61.1 F). The strongest colour marks a difference of 0.9 C (1.6 F). 1965: 15.1 C, -0.3 C from the station mean1966: 15.4 C, +0.1 C from the station mean1967: 14.7 C, -0.7 C from the station mean1968: 15.1 C, -0.2 C from the station mean1969: 15.4 C, +0.1 C from the station mean1972: 15.2 C, -0.2 C from the station mean1974: 14.8 C, -0.5 C from the station mean1978: 15.3 C, 0.0 C from the station mean1979: 15.5 C, +0.2 C from the station mean1980: 15.0 C, -0.3 C from the station mean1982: 15.6 C, +0.3 C from the station mean1983: 16.2 C, +0.8 C from the station mean1984: 15.3 C, 0.0 C from the station mean1985: 15.6 C, +0.3 C from the station mean1990: 15.0 C, -0.3 C from the station mean1992: 15.9 C, +0.6 C from the station mean1993: 15.6 C, +0.3 C from the station mean1994: 14.8 C, -0.5 C from the station mean1996: 15.0 C, -0.3 C from the station mean1997: 15.2 C, -0.1 C from the station mean1998: 15.9 C, +0.6 C from the station mean1999: 15.7 C, +0.4 C from the station mean2000: 14.9 C, -0.4 C from the station mean19651970197519801985199019952000
One stripe for each of 23 complete years at Bethal, 1965 to 2000. Blue stripes are years cooler than the station's own mean of 15.3 C (59.6 F); red stripes are warmer. The coolest year was 1967, at 14.7 C (58.4 F), and the warmest was 1983, at 16.2 C (61.1 F). The strongest colour marks a difference of 0.9 C (1.6 F).
Annual mean temperature at Bethal as warming stripes, 1965 to 2000
YearAnnual mean temperatureDifference from the station mean
196515.1 C-0.26 C
196615.4 C+0.13 C
196714.7 C-0.65 C
196815.1 C-0.21 C
196915.4 C+0.10 C
197215.2 C-0.16 C
197414.8 C-0.47 C
197815.3 C0.00 C
197915.5 C+0.20 C
198015.0 C-0.34 C
198215.6 C+0.28 C
198316.2 C+0.84 C
198415.3 C-0.01 C
198515.6 C+0.30 C
199015.0 C-0.28 C
199215.9 C+0.61 C
199315.6 C+0.33 C
199414.8 C-0.53 C
199615.0 C-0.27 C
199715.2 C-0.13 C
199815.9 C+0.59 C
199915.7 C+0.43 C
200014.9 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
Yearly extremes at Bethal: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.4 C (93.9 F)198331.4 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)200053.0 mm (2.1 in)43
Wettest five days (Rx5day)152.0 mm (6.0 in)197586.5 mm (3.4 in)38
Longest dry spell (CDD)151 days199450 days41

Hottest day (TXx)

Hottest day (TXx) at Bethal by year The hottest day of the year at Bethal, 1964 to 2014. The record is 34.4 C (93.9 F) in 1983, marked on the chart; the median year is 31.4 C (88.5 F). 26283032343619701980199020002010Record: 34.4 C (93.9 F) in 1983
The hottest day of the year at Bethal, 1964 to 2014. The record is 34.4 C (93.9 F) in 1983, marked on the chart; the median year is 31.4 C (88.5 F).
Hottest day (TXx) at Bethal by year
YearHottest day (TXx)
196432.1 C (89.8 F)
196533.0 C (91.4 F)
196632.4 C (90.3 F)
196731.0 C (87.8 F)
196833.0 C (91.4 F)
196933.7 C (92.7 F)
197031.3 C (88.3 F)
197130.6 C (87.1 F)
197232.3 C (90.1 F)
197332.6 C (90.7 F)
197430.0 C (86.0 F)
197529.5 C (85.1 F)
197629.3 C (84.7 F)
197730.7 C (87.3 F)
197830.0 C (86.0 F)
197930.5 C (86.9 F)
198030.7 C (87.3 F)
198132.0 C (89.6 F)
198231.6 C (88.9 F)
198334.4 C (93.9 F)
198431.7 C (89.1 F)
198531.2 C (88.2 F)
198630.5 C (86.9 F)
198730.5 C (86.9 F)
198832.1 C (89.8 F)
198931.4 C (88.5 F)
199031.3 C (88.3 F)
199131.8 C (89.2 F)
199232.9 C (91.2 F)
199332.9 C (91.2 F)
199431.4 C (88.5 F)
199531.8 C (89.2 F)
199630.6 C (87.1 F)
199731.9 C (89.4 F)
199831.8 C (89.2 F)
199933.3 C (91.9 F)
200030.3 C (86.5 F)
200132.6 C (90.7 F)
200229.0 C (84.2 F)
200330.3 C (86.5 F)
200431.6 C (88.9 F)
200529.3 C (84.7 F)
200627.0 C (80.6 F)
201430.4 C (86.7 F)

Coldest night (TNn)

Coldest night (TNn) at Bethal by year The coldest night of the year at Bethal, 1964 to 2014. The record is -12.5 C (9.5 F) in 1976, marked on the chart; the median year is -5.5 C (22.1 F). -20-100102019701980199020002010Record: -12.5 C (9.5 F) in 1976
The coldest night of the year at Bethal, 1964 to 2014. The record is -12.5 C (9.5 F) in 1976, marked on the chart; the median year is -5.5 C (22.1 F).
Coldest night (TNn) at Bethal by year
YearColdest 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)
20021.0 C (33.8 F)
2003-2.2 C (28.0 F)
2004-1.9 C (28.6 F)
20051.0 C (33.8 F)
200613.9 C (57.0 F)
201410.1 C (50.2 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Bethal by year The wettest day of the year at Bethal, 1964 to 2014. The record is 97.0 mm (3.8 in) in 2000, marked on the chart; the median year is 53.0 mm (2.1 in). 025507510019701980199020002010Record: 97.0 mm (3.8 in) in 2000
The wettest day of the year at Bethal, 1964 to 2014. The record is 97.0 mm (3.8 in) in 2000, marked on the chart; the median year is 53.0 mm (2.1 in).
Wettest day (Rx1day) at Bethal by year
YearWettest day (Rx1day)
196487.0 mm (3.4 in)
196535.0 mm (1.4 in)
196664.0 mm (2.5 in)
196757.0 mm (2.2 in)
196825.0 mm (1.0 in)
196961.0 mm (2.4 in)
197032.0 mm (1.3 in)
197154.0 mm (2.1 in)
197266.0 mm (2.6 in)
197348.0 mm (1.9 in)
197453.0 mm (2.1 in)
197558.0 mm (2.3 in)
197654.0 mm (2.1 in)
197766.0 mm (2.6 in)
197849.0 mm (1.9 in)
197955.0 mm (2.2 in)
198082.0 mm (3.2 in)
198188.0 mm (3.5 in)
198252.0 mm (2.0 in)
198331.0 mm (1.2 in)
198441.0 mm (1.6 in)
198553.0 mm (2.1 in)
198632.0 mm (1.3 in)
198771.0 mm (2.8 in)
198842.0 mm (1.7 in)
198944.0 mm (1.7 in)
199061.0 mm (2.4 in)
199156.0 mm (2.2 in)
199237.0 mm (1.5 in)
199368.0 mm (2.7 in)
199433.0 mm (1.3 in)
199591.0 mm (3.6 in)
199675.0 mm (3.0 in)
199783.0 mm (3.3 in)
199839.0 mm (1.5 in)
199953.0 mm (2.1 in)
200097.0 mm (3.8 in)
200169.0 mm (2.7 in)
200238.9 mm (1.5 in)
200338.1 mm (1.5 in)
200422.1 mm (0.9 in)
20052.8 mm (0.11 in)
200614.0 mm (0.6 in)
2014n/a

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Bethal by year The wettest five days of the year at Bethal, 1964 to 2014. The record is 152.0 mm (6.0 in) in 1975, marked on the chart; the median year is 86.5 mm (3.4 in). 05010015020019701980199020002010Record: 152.0 mm (6.0 in) in 1975
The wettest five days of the year at Bethal, 1964 to 2014. The record is 152.0 mm (6.0 in) in 1975, marked on the chart; the median year is 86.5 mm (3.4 in).
Wettest five days (Rx5day) at Bethal by year
YearWettest five days (Rx5day)
196498.0 mm (3.9 in)
196552.0 mm (2.0 in)
196685.0 mm (3.3 in)
196799.0 mm (3.9 in)
196856.0 mm (2.2 in)
1969109.0 mm (4.3 in)
197070.0 mm (2.8 in)
197180.0 mm (3.1 in)
1972137.0 mm (5.4 in)
197392.0 mm (3.6 in)
197487.0 mm (3.4 in)
1975152.0 mm (6.0 in)
197679.0 mm (3.1 in)
1977101.0 mm (4.0 in)
1978105.0 mm (4.1 in)
197970.0 mm (2.8 in)
1980132.0 mm (5.2 in)
1981124.0 mm (4.9 in)
198267.0 mm (2.6 in)
198386.0 mm (3.4 in)
198465.0 mm (2.6 in)
1985113.0 mm (4.4 in)
198661.0 mm (2.4 in)
1987103.0 mm (4.1 in)
198846.0 mm (1.8 in)
198983.0 mm (3.3 in)
1990121.0 mm (4.8 in)
199179.0 mm (3.1 in)
199260.0 mm (2.4 in)
199394.0 mm (3.7 in)
199458.0 mm (2.3 in)
1995135.0 mm (5.3 in)
1996111.0 mm (4.4 in)
1997140.0 mm (5.5 in)
199868.0 mm (2.7 in)
199968.0 mm (2.7 in)
2000119.0 mm (4.7 in)
200169.0 mm (2.7 in)
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2014n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Bethal by year The longest dry spell of the year at Bethal, 1964 to 2014. The record is 151 days in 1994, marked on the chart; the median year is 50 days. 05010015020019701980199020002010Record: 151 days in 1994
The longest dry spell of the year at Bethal, 1964 to 2014. The record is 151 days in 1994, marked on the chart; the median year is 50 days.
Longest dry spell (CDD) at Bethal by year
YearLongest dry spell (CDD)
196446 days
196548 days
196672 days
196743 days
196849 days
196967 days
197039 days
197181 days
197283 days
197391 days
197443 days
197545 days
197646 days
197771 days
197888 days
197931 days
1980112 days
198154 days
198248 days
198343 days
198438 days
198559 days
198686 days
198750 days
198889 days
198949 days
199039 days
199194 days
1992106 days
199384 days
1994151 days
199554 days
199642 days
199726 days
1998146 days
1999110 days
200067 days
200128 days
2002n/a
20031 day
20041 day
20051 day
2006n/a
2014n/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 frost

Across 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.

Frost dates and growing season at Bethal
MeasureMedian, all yearsEarliest periodRecent period (1965 to 2000)Recent against earliestFitted trend
Last spring frost27 Augustn/a27 Augustn/an/a
First autumn frost15 Mayn/a15 Mayn/an/a
Growing days261 daysn/a261 daysn/an/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 2000

A 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.

Rainfall return levels at Bethal: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years54.7 mm (2.2 in)
5 years72.2 mm (2.8 in)
10 years82.5 mm (3.2 in)
25 years94.3 mm (3.7 in)
50 years102.1 mm (4.0 in)Longer than the 36 years of record
100 years109.3 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

  • Data for Bethal standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Bethal 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).