Granta Weather Records (SF000804570)

Record envelope, standing records and threshold days for Granta (SF000804570), South Africa, with 81 years of record.

Key Facts for Granta

Granta (SF000804570) is a weather station in South Africa at -32.63 latitude and 27.77 longitude, 645 m (2,116 ft) above sea level.
The station reports from 1917 to 1997, 81 years of record.
0 records set at Granta still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Granta set a daily record precipitation of 63.0 mm (2.5 in) on 28 November 1997.

About the Station

Location: South Africa, -32.63 latitude, 27.77 longitude.
Elevation: 645 m (2,116 ft).
Period of record: 1917 to 1997, 81 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Granta. 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 Granta, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Granta still stand.

Wettest Day of Each Month

Oct: 209.6 mm (8.3 in)

The wettest day on record for each calendar month at Granta. The most was 209.6 mm (8.3 in) on 2 October 1917.

Record daily precipitation for each month at Granta
Month	Record daily precipitation (mm)	Date
Jan	109.0 mm (4.3 in)	24 January 1981
Feb	73.5 mm (2.9 in)	18 February 1992
Mar	90.0 mm (3.5 in)	25 March 1972
Apr	133.1 mm (5.2 in)	19 April 1948
May	88.9 mm (3.5 in)	4 May 1940
Jun	112.3 mm (4.4 in)	7 June 1917
Jul	134.1 mm (5.3 in)	5 July 1931
Aug	120.0 mm (4.7 in)	26 August 1970
Sep	81.8 mm (3.2 in)	22 September 1993
Oct	209.6 mm (8.3 in)	2 October 1917
Nov	149.5 mm (5.9 in)	2 November 1985
Dec	80.4 mm (3.2 in)	31 December 1977

Latest Records

Latest records at Granta
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 November 1997	Granta, ZA	daily rain	63.0 mm (2.5 in)	14.0 mm (0.6 in)	8 years	19 of 100 (Routine)
14 October 1997	Granta, ZA	daily rain	63.0 mm (2.5 in)	30.0 mm (1.2 in)	60 years	48 of 100 (Notable)
29 June 1997	Granta, ZA	daily rain	6.5 mm (0.26 in)	5.2 mm (0.20 in)	56 years	20 of 100 (Routine)
13 June 1997	Granta, ZA	daily rain	28.1 mm (1.1 in)	15.7 mm (0.6 in)	62 years	38 of 100 (Notable)
12 June 1997	Granta, ZA	daily rain	63.2 mm (2.5 in)	16.5 mm (0.6 in)	62 years	39 of 100 (Notable)
11 June 1997	Granta, ZA	daily rain	25.0 mm (1.0 in)	9.3 mm (0.37 in)	63 years	33 of 100 (Routine)
8 May 1997	Granta, ZA	daily rain	26.1 mm (1.0 in)	3.6 mm (0.14 in)	20 years	17 of 100 (Routine)
17 April 1997	Granta, ZA	daily rain	20.2 mm (0.8 in)	4.7 mm (0.19 in)	20 years	18 of 100 (Routine)
8 January 1997	Granta, ZA	daily rain	27.9 mm (1.1 in)	4.5 mm (0.18 in)	49 years	26 of 100 (Routine)
28 December 1996	Granta, ZA	daily rain	46.2 mm (1.8 in)	26.7 mm (1.1 in)	39 years	45 of 100 (Notable)
17 November 1996	Granta, ZA	daily rain	21.0 mm (0.8 in)	1.0 mm (0.04 in)	39 years	19 of 100 (Routine)
6 November 1996	Granta, ZA	daily rain	39.4 mm (1.6 in)	0.4 mm (0.02 in)	32 years	17 of 100 (Routine)
25 May 1996	Granta, ZA	daily rain	8.8 mm (0.35 in)	1.8 mm (0.07 in)	17 years	14 of 100 (Routine)
18 January 1996	Granta, ZA	daily rain	33.1 mm (1.3 in)	11.1 mm (0.4 in)	24 years	25 of 100 (Routine)
16 June 1995	Granta, ZA	daily rain	22.0 mm (0.9 in)	7.0 mm (0.28 in)	29 years	20 of 100 (Routine)
6 May 1995	Granta, ZA	daily rain	13.0 mm (0.5 in)	2.1 mm (0.08 in)	77 years	20 of 100 (Routine)
15 January 1995	Granta, ZA	daily rain	34.7 mm (1.4 in)	12.6 mm (0.5 in)	43 years	30 of 100 (Routine)
14 January 1995	Granta, ZA	daily rain	101.8 mm (4.0 in)	58.6 mm (2.3 in)	51 years	62 of 100 (Major)
24 December 1994	Granta, ZA	daily rain	57.8 mm (2.3 in)	28.5 mm (1.1 in)	5 years	36 of 100 (Notable)
9 December 1994	Granta, ZA	daily rain	27.5 mm (1.1 in)	16.5 mm (0.6 in)	16 years	27 of 100 (Routine)

Extremes by Year

1917 to 1997

Yearly extremes at Granta: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	209.6 mm (8.3 in)	1917	59.6 mm (2.3 in)	80
Wettest five days (Rx5day)	392.0 mm (15.4 in)	1970	95.4 mm (3.8 in)	80
Longest dry spell (CDD)	95 days	1949	40 days	80

Wettest day (Rx1day)

The wettest day of the year at Granta, 1917 to 1997. The record is 209.6 mm (8.3 in) in 1917, marked on the chart; the median year is 59.6 mm (2.3 in).

Wettest day (Rx1day) at Granta by year
Year	Wettest day (Rx1day)
1917	209.6 mm (8.3 in)
1918	37.6 mm (1.5 in)
1919	45.2 mm (1.8 in)
1920	25.9 mm (1.0 in)
1921	55.9 mm (2.2 in)
1922	49.8 mm (2.0 in)
1923	43.2 mm (1.7 in)
1925	51.6 mm (2.0 in)
1926	38.9 mm (1.5 in)
1927	28.7 mm (1.1 in)
1928	83.8 mm (3.3 in)
1929	67.6 mm (2.7 in)
1930	59.7 mm (2.4 in)
1931	134.1 mm (5.3 in)
1932	86.4 mm (3.4 in)
1933	53.3 mm (2.1 in)
1934	70.4 mm (2.8 in)
1935	46.7 mm (1.8 in)
1936	63.5 mm (2.5 in)
1937	43.2 mm (1.7 in)
1938	47.5 mm (1.9 in)
1939	55.1 mm (2.2 in)
1940	88.9 mm (3.5 in)
1941	61.5 mm (2.4 in)
1942	148.1 mm (5.8 in)
1943	59.4 mm (2.3 in)
1944	87.6 mm (3.4 in)
1945	47.8 mm (1.9 in)
1946	46.5 mm (1.8 in)
1947	83.3 mm (3.3 in)
1948	133.1 mm (5.2 in)
1949	59.2 mm (2.3 in)
1950	63.2 mm (2.5 in)
1951	67.8 mm (2.7 in)
1952	58.2 mm (2.3 in)
1953	53.8 mm (2.1 in)
1954	28.4 mm (1.1 in)
1955	64.0 mm (2.5 in)
1956	90.0 mm (3.5 in)
1957	33.5 mm (1.3 in)
1958	35.5 mm (1.4 in)
1959	80.5 mm (3.2 in)
1960	81.3 mm (3.2 in)
1961	57.0 mm (2.2 in)
1962	47.0 mm (1.9 in)
1963	59.0 mm (2.3 in)
1964	63.0 mm (2.5 in)
1965	43.5 mm (1.7 in)
1966	59.5 mm (2.3 in)
1967	66.5 mm (2.6 in)
1968	58.5 mm (2.3 in)
1969	40.5 mm (1.6 in)
1970	120.0 mm (4.7 in)
1971	63.5 mm (2.5 in)
1972	90.0 mm (3.5 in)
1973	30.5 mm (1.2 in)
1974	43.5 mm (1.7 in)
1975	78.0 mm (3.1 in)
1976	79.0 mm (3.1 in)
1977	80.4 mm (3.2 in)
1978	43.2 mm (1.7 in)
1979	87.0 mm (3.4 in)
1980	28.0 mm (1.1 in)
1981	109.0 mm (4.3 in)
1982	29.2 mm (1.1 in)
1983	93.0 mm (3.7 in)
1984	37.9 mm (1.5 in)
1985	149.5 mm (5.9 in)
1986	64.0 mm (2.5 in)
1987	67.3 mm (2.6 in)
1988	49.8 mm (2.0 in)
1989	141.2 mm (5.6 in)
1990	52.0 mm (2.0 in)
1991	62.5 mm (2.5 in)
1992	73.5 mm (2.9 in)
1993	81.8 mm (3.2 in)
1994	57.8 mm (2.3 in)
1995	101.8 mm (4.0 in)
1996	46.2 mm (1.8 in)
1997	63.2 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Granta, 1917 to 1997. The record is 392.0 mm (15.4 in) in 1970, marked on the chart; the median year is 95.4 mm (3.8 in).

Wettest five days (Rx5day) at Granta by year
Year	Wettest five days (Rx5day)
1917	218.5 mm (8.6 in)
1918	66.3 mm (2.6 in)
1919	88.9 mm (3.5 in)
1920	56.1 mm (2.2 in)
1921	89.8 mm (3.5 in)
1922	51.1 mm (2.0 in)
1923	127.8 mm (5.0 in)
1925	97.0 mm (3.8 in)
1926	69.1 mm (2.7 in)
1927	76.5 mm (3.0 in)
1928	112.2 mm (4.4 in)
1929	114.9 mm (4.5 in)
1930	110.2 mm (4.3 in)
1931	172.2 mm (6.8 in)
1932	116.8 mm (4.6 in)
1933	76.7 mm (3.0 in)
1934	90.2 mm (3.6 in)
1935	103.6 mm (4.1 in)
1936	93.9 mm (3.7 in)
1937	85.7 mm (3.4 in)
1938	67.0 mm (2.6 in)
1939	94.7 mm (3.7 in)
1940	104.2 mm (4.1 in)
1941	98.8 mm (3.9 in)
1942	176.5 mm (6.9 in)
1943	97.7 mm (3.8 in)
1944	96.2 mm (3.8 in)
1945	85.1 mm (3.4 in)
1946	84.5 mm (3.3 in)
1947	88.9 mm (3.5 in)
1948	210.3 mm (8.3 in)
1949	107.2 mm (4.2 in)
1950	145.6 mm (5.7 in)
1951	73.4 mm (2.9 in)
1952	75.9 mm (3.0 in)
1953	77.2 mm (3.0 in)
1954	37.3 mm (1.5 in)
1955	96.0 mm (3.8 in)
1956	182.0 mm (7.2 in)
1957	48.0 mm (1.9 in)
1958	81.0 mm (3.2 in)
1959	160.5 mm (6.3 in)
1960	110.5 mm (4.4 in)
1961	84.5 mm (3.3 in)
1962	81.0 mm (3.2 in)
1963	128.6 mm (5.1 in)
1964	111.5 mm (4.4 in)
1965	91.7 mm (3.6 in)
1966	91.5 mm (3.6 in)
1967	94.5 mm (3.7 in)
1968	99.5 mm (3.9 in)
1969	75.0 mm (3.0 in)
1970	392.0 mm (15.4 in)
1971	126.0 mm (5.0 in)
1972	156.0 mm (6.1 in)
1973	58.0 mm (2.3 in)
1974	82.5 mm (3.2 in)
1975	92.1 mm (3.6 in)
1976	166.8 mm (6.6 in)
1977	147.0 mm (5.8 in)
1978	53.0 mm (2.1 in)
1979	159.7 mm (6.3 in)
1980	74.5 mm (2.9 in)
1981	160.9 mm (6.3 in)
1982	48.2 mm (1.9 in)
1983	119.9 mm (4.7 in)
1984	61.4 mm (2.4 in)
1985	265.2 mm (10.4 in)
1986	88.8 mm (3.5 in)
1987	126.2 mm (5.0 in)
1988	126.0 mm (5.0 in)
1989	164.9 mm (6.5 in)
1990	80.1 mm (3.2 in)
1991	87.8 mm (3.5 in)
1992	76.0 mm (3.0 in)
1993	122.6 mm (4.8 in)
1994	98.3 mm (3.9 in)
1995	146.0 mm (5.7 in)
1996	87.6 mm (3.4 in)
1997	124.6 mm (4.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Granta, 1917 to 1997. The record is 95 days in 1949, marked on the chart; the median year is 40 days.

Longest dry spell (CDD) at Granta by year
Year	Longest dry spell (CDD)
1917	35 days
1918	37 days
1919	46 days
1920	8 days
1921	28 days
1922	33 days
1923	8 days
1925	24 days
1926	20 days
1927	85 days
1928	41 days
1929	23 days
1930	31 days
1931	92 days
1932	51 days
1933	25 days
1934	35 days
1935	27 days
1936	46 days
1937	40 days
1938	29 days
1939	21 days
1940	48 days
1941	48 days
1942	83 days
1943	58 days
1944	23 days
1945	44 days
1946	51 days
1947	15 days
1948	54 days
1949	95 days
1950	30 days
1951	44 days
1952	38 days
1953	52 days
1954	34 days
1955	36 days
1956	21 days
1957	32 days
1958	46 days
1959	50 days
1960	35 days
1961	23 days
1962	77 days
1963	44 days
1964	52 days
1965	38 days
1966	45 days
1967	44 days
1968	43 days
1969	38 days
1970	59 days
1971	64 days
1972	43 days
1973	60 days
1974	24 days
1975	26 days
1976	17 days
1977	40 days
1978	36 days
1979	54 days
1980	32 days
1981	48 days
1982	36 days
1983	39 days
1984	31 days
1985	71 days
1986	50 days
1987	30 days
1988	29 days
1989	51 days
1990	54 days
1991	49 days
1992	43 days
1993	35 days
1994	35 days
1995	43 days
1996	40 days
1997	20 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.

Rainfall Return Levels

67 years, 1918 to 1997

A day with at least 62.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 170.4 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Granta: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	62.2 mm (2.4 in)
5 years	86.6 mm (3.4 in)
10 years	104.5 mm (4.1 in)
25 years	129.1 mm (5.1 in)
50 years	149.1 mm (5.9 in)
100 years	170.4 mm (6.7 in)	Longer than the 67 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, 67 years of values from 1918 to 1997.

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: 149.5 mm (5.9 in) in 1985; 148.1 mm (5.8 in) in 1942; 141.2 mm (5.6 in) in 1989.

Download the Data

Data for Granta standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Granta 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

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

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a