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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Grootfontein Threshold Days by Year (WA010101860)

10 fixed thresholds counted per year at Grootfontein (WA010101860): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grootfontein Thresholds

  • Grootfontein: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1950 with 32.
  • Grootfontein: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 1923 with 12.
  • Grootfontein: days with 50 mm (1.97 in) or more of precipitation in 44 years, most in 1980 with 4.
  • Grootfontein: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 2024 with 237.
  • 10 fixed thresholds have at least one qualifying day at Grootfontein.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Grootfontein Days per year at Grootfontein with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 237 in 2024. 01002003001982: 1691984: 1811985: 1501989: 1461991: 1011992: 1821993: 961994: 1231995: 1791996: 1691997: 1001998: 2091999: 1372000: 1292001: 1652002: 1802003: 2002014: 1472022: 1822024: 2372025: 581982198919931996199920022022
Days per year at Grootfontein with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 237 in 2024.
Days at or above 30 C (86 F) per year at Grootfontein
YearDaysDecade average
1982169161.5
1984181161.5
1985150161.5
1989146161.5
1991101144
1992182144
199396144
1994123144
1995179144
1996169144
1997100144
1998209144
1999137144
2000129168.5
2001165168.5
2002180168.5
2003200168.5
2014147147
2022182159
2024237159
202558159
First to last qualifying date each year at Grootfontein For each year, a bar from the first to the last day at Grootfontein meeting 30 C (86 F). 1982: 1 January 1982 to 31 December 19821984: 6 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851989: 1 January 1989 to 31 December 19891991: 1 January 1991 to 13 December 19911992: 2 January 1992 to 31 December 19921993: 1 January 1993 to 22 December 19931994: 2 January 1994 to 31 December 19941995: 1 January 1995 to 31 December 19951996: 1 January 1996 to 31 December 19961997: 1 January 1997 to 28 December 19971998: 2 January 1998 to 31 December 19981999: 1 January 1999 to 16 December 19992000: 2 January 2000 to 31 December 20002001: 1 January 2001 to 30 December 20012002: 1 January 2002 to 31 December 20022003: 1 January 2003 to 31 December 20032014: 11 January 2014 to 31 December 20142022: 1 January 2022 to 31 December 20222024: 1 January 2024 to 31 December 20242025: 1 January 2025 to 24 August 20251982198919931996199920022022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grootfontein meeting 30 C (86 F).
First to last qualifying date each year at Grootfontein
YearFirst dateLast date
19821982-01-011982-12-31
19841984-01-061984-12-31
19851985-01-011985-12-31
19891989-01-011989-12-31
19911991-01-011991-12-13
19921992-01-021992-12-31
19931993-01-011993-12-22
19941994-01-021994-12-31
19951995-01-011995-12-31
19961996-01-011996-12-31
19971997-01-011997-12-28
19981998-01-021998-12-31
19991999-01-011999-12-16
20002000-01-022000-12-31
20012001-01-012001-12-30
20022002-01-012002-12-31
20032003-01-012003-12-31
20142014-01-112014-12-31
20222022-01-012022-12-31
20242024-01-012024-12-31
20252025-01-012025-08-24

Every Fixed Threshold

Fixed thresholds at Grootfontein
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days21237202458
35 C (95 F): Days1992202492
90 F (32.2 C): Days21181202412
100 F (37.8 C): Days313202413
0 C (32 F): Frost days (min101720029
20 C (68 F): Tropical nights (min1660199256
10 mm (0.39 in): Days with 10 mm or more rain713219506
25 mm (0.98 in): Days with 25 mm or more rain701219233
50 mm (1.97 in): Days with 50 mm or more rain44419802
100 mm (3.94 in): Days with 100 mm or more rain4119231

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.

Download the Data

  • Data for Grootfontein 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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