Grandfield 4 NW Weather Records (USC00343709)

Record envelope, standing records and threshold days for Grandfield 4 NW (USC00343709), Oklahoma, United States, with 54 years of record.

Key Facts for Grandfield 4 NW

Grandfield 4 NW (USC00343709) is a weather station in Oklahoma, United States at 34.28 latitude and -98.73 longitude, 323 m (1,060 ft) above sea level.
The station reports from 1941 to 1994, 54 years of record.
0 records set at Grandfield 4 NW still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Grandfield 4 NW set a daily record precipitation of 70.6 mm (2.8 in) on 5 November 1994.

About the Station

Location: Oklahoma, United States, 34.28 latitude, -98.73 longitude.
Elevation: 323 m (1,060 ft).
Period of record: 1941 to 1994, 54 years.
Eligible elements: prcp, snow, snwd.

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 Grandfield 4 NW. 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 Grandfield 4 NW, 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 Grandfield 4 NW still stand.

All-Time Record Progression

3 new records

3 all-time records were set at Grandfield 4 NW between 20 October 1983 and 7 January 1988. Each dot is a new record.

When Grandfield 4 NW set new all-time records
Date	Kind	Detail
1983-10-20	Record daily precipitation	Record daily precipitation 137.2 mm (5.4 in)
1987-05-28	Record daily precipitation	Record daily precipitation 160.8 mm (6.3 in)
1988-01-07	Record daily snowfall	Record daily snowfall 20.3 cm (8.0 in)

Wettest Day of Each Month

May: 160.8 mm (6.3 in)

The wettest day on record for each calendar month at Grandfield 4 NW. The most was 160.8 mm (6.3 in) on 28 May 1987.

Record daily precipitation for each month at Grandfield 4 NW
Month	Record daily precipitation (mm)	Date
Jan	64.0 mm (2.5 in)	25 January 1949
Feb	71.4 mm (2.8 in)	23 February 1985
Mar	78.7 mm (3.1 in)	30 March 1993
Apr	70.1 mm (2.8 in)	17 April 1959
May	160.8 mm (6.3 in)	28 May 1987
Jun	105.4 mm (4.1 in)	11 June 1987
Jul	87.6 mm (3.4 in)	30 July 1973
Aug	88.1 mm (3.5 in)	27 August 1969
Sep	88.9 mm (3.5 in)	25 September 1974
Oct	137.2 mm (5.4 in)	20 October 1983
Nov	74.9 mm (2.9 in)	1 November 1972
Dec	62.0 mm (2.4 in)	3 December 1947

Latest Records

Latest records at Grandfield 4 NW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 November 1994	Grandfield 4 NW, US	daily rain	70.6 mm (2.8 in)	33.3 mm (1.3 in)	36 years	39 of 100 (Notable)
24 July 1994	Grandfield 4 NW, US	daily rain	17.3 mm (0.7 in)	9.7 mm (0.38 in)	32 years	20 of 100 (Routine)
8 March 1994	Grandfield 4 NW, US	daily rain	36.8 mm (1.4 in)	0.2 mm (0.01 in)	17 years	10 of 100 (Routine)
22 February 1994	Grandfield 4 NW, US	daily rain	45.0 mm (1.8 in)	9.4 mm (0.37 in)	19 years	17 of 100 (Routine)
31 January 1994	Grandfield 4 NW, US	daily snowfall	5.1 cm (2.0 in)	3.1 cm (1.2 in)	12 years	15 of 100 (Routine)
13 December 1993	Grandfield 4 NW, US	daily rain	17.3 mm (0.7 in)	7.1 mm (0.28 in)	14 years	15 of 100 (Routine)
13 July 1993	Grandfield 4 NW, US	daily rain	12.7 mm (0.5 in)	4.6 mm (0.18 in)	47 years	20 of 100 (Routine)
14 April 1993	Grandfield 4 NW, US	daily rain	48.3 mm (1.9 in)	8.9 mm (0.35 in)	28 years	19 of 100 (Routine)
30 March 1993	Grandfield 4 NW, US	monthly rain	78.7 mm (3.1 in)	21.5 mm (0.8 in)	8 years	36 of 100 (Notable)
1 March 1993	Grandfield 4 NW, US	daily rain	21.6 mm (0.9 in)	4.3 mm (0.17 in)	44 years	20 of 100 (Routine)
15 February 1993	Grandfield 4 NW, US	daily rain	52.1 mm (2.1 in)	24.2 mm (1.0 in)	4 years	26 of 100 (Routine)
9 December 1992	Grandfield 4 NW, US	daily rain	28.7 mm (1.1 in)	4.8 mm (0.19 in)	21 years	15 of 100 (Routine)
22 November 1992	Grandfield 4 NW, US	daily rain	36.6 mm (1.4 in)	13.2 mm (0.5 in)	31 years	23 of 100 (Routine)
8 June 1992	Grandfield 4 NW, US	daily rain	29.5 mm (1.2 in)	2.8 mm (0.11 in)	3 years	6 of 100 (Routine)
9 March 1992	Grandfield 4 NW, US	daily rain	45.0 mm (1.8 in)	16.6 mm (0.7 in)	19 years	24 of 100 (Routine)
4 March 1992	Grandfield 4 NW, US	daily rain	23.9 mm (0.9 in)	3.6 mm (0.14 in)	7 years	10 of 100 (Routine)
20 December 1991	Grandfield 4 NW, US	daily rain	60.2 mm (2.4 in)	50.0 mm (2.0 in)	4 years	46 of 100 (Notable)
28 October 1991	Grandfield 4 NW, US	daily rain	72.4 mm (2.9 in)	36.8 mm (1.4 in)	28 years	29 of 100 (Routine)
21 August 1991	Grandfield 4 NW, US	daily rain	27.2 mm (1.1 in)	18.3 mm (0.7 in)	40 years	28 of 100 (Routine)
17 August 1991	Grandfield 4 NW, US	daily rain	35.8 mm (1.4 in)	17.5 mm (0.7 in)	32 years	25 of 100 (Routine)

Extremes by Year

1941 to 1994

Yearly extremes at Grandfield 4 NW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	160.8 mm (6.3 in)	1987	74.6 mm (2.9 in)	54
Wettest five days (Rx5day)	261.7 mm (10.3 in)	1983	102.6 mm (4.0 in)	54
Longest dry spell (CDD)	107 days	1954	38 days	54

Wettest day (Rx1day)

The wettest day of the year at Grandfield 4 NW, 1941 to 1994. The record is 160.8 mm (6.3 in) in 1987, marked on the chart; the median year is 74.6 mm (2.9 in).

Wettest day (Rx1day) at Grandfield 4 NW by year
Year	Wettest day (Rx1day)
1941	20.6 mm (0.8 in)
1942	43.2 mm (1.7 in)
1943	50.5 mm (2.0 in)
1944	73.7 mm (2.9 in)
1945	74.9 mm (2.9 in)
1946	48.3 mm (1.9 in)
1947	89.9 mm (3.5 in)
1948	79.5 mm (3.1 in)
1949	64.0 mm (2.5 in)
1950	133.4 mm (5.3 in)
1951	123.2 mm (4.9 in)
1952	62.7 mm (2.5 in)
1953	68.6 mm (2.7 in)
1954	64.3 mm (2.5 in)
1955	81.3 mm (3.2 in)
1956	53.6 mm (2.1 in)
1957	78.5 mm (3.1 in)
1958	86.4 mm (3.4 in)
1959	78.0 mm (3.1 in)
1960	101.6 mm (4.0 in)
1961	86.4 mm (3.4 in)
1962	50.3 mm (2.0 in)
1963	67.3 mm (2.6 in)
1964	72.6 mm (2.9 in)
1965	67.3 mm (2.6 in)
1966	79.2 mm (3.1 in)
1967	61.0 mm (2.4 in)
1968	46.5 mm (1.8 in)
1969	88.1 mm (3.5 in)
1970	73.2 mm (2.9 in)
1971	84.3 mm (3.3 in)
1972	74.9 mm (2.9 in)
1973	87.6 mm (3.4 in)
1974	88.9 mm (3.5 in)
1975	122.7 mm (4.8 in)
1976	82.8 mm (3.3 in)
1977	43.2 mm (1.7 in)
1978	83.1 mm (3.3 in)
1979	78.7 mm (3.1 in)
1980	65.0 mm (2.6 in)
1981	68.3 mm (2.7 in)
1982	66.0 mm (2.6 in)
1983	137.2 mm (5.4 in)
1984	20.3 mm (0.8 in)
1985	97.0 mm (3.8 in)
1986	119.6 mm (4.7 in)
1987	160.8 mm (6.3 in)
1988	64.0 mm (2.5 in)
1989	78.7 mm (3.1 in)
1990	59.2 mm (2.3 in)
1991	72.4 mm (2.9 in)
1992	49.8 mm (2.0 in)
1993	78.7 mm (3.1 in)
1994	74.2 mm (2.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grandfield 4 NW, 1941 to 1994. The record is 261.7 mm (10.3 in) in 1983, marked on the chart; the median year is 102.6 mm (4.0 in).

Wettest five days (Rx5day) at Grandfield 4 NW by year
Year	Wettest five days (Rx5day)
1941	29.0 mm (1.1 in)
1942	73.1 mm (2.9 in)
1943	78.8 mm (3.1 in)
1944	102.7 mm (4.0 in)
1945	253.0 mm (10.0 in)
1946	86.9 mm (3.4 in)
1947	155.7 mm (6.1 in)
1948	91.9 mm (3.6 in)
1949	115.8 mm (4.6 in)
1950	208.8 mm (8.2 in)
1951	216.4 mm (8.5 in)
1952	107.9 mm (4.2 in)
1953	100.6 mm (4.0 in)
1954	129.3 mm (5.1 in)
1955	145.8 mm (5.7 in)
1956	93.2 mm (3.7 in)
1957	102.4 mm (4.0 in)
1958	106.2 mm (4.2 in)
1959	132.4 mm (5.2 in)
1960	136.2 mm (5.4 in)
1961	99.1 mm (3.9 in)
1962	81.8 mm (3.2 in)
1963	89.5 mm (3.5 in)
1964	88.9 mm (3.5 in)
1965	104.9 mm (4.1 in)
1966	125.1 mm (4.9 in)
1967	86.3 mm (3.4 in)
1968	100.6 mm (4.0 in)
1969	115.0 mm (4.5 in)
1970	93.0 mm (3.7 in)
1971	99.3 mm (3.9 in)
1972	147.3 mm (5.8 in)
1973	105.4 mm (4.1 in)
1974	115.6 mm (4.6 in)
1975	165.1 mm (6.5 in)
1976	98.0 mm (3.9 in)
1977	52.5 mm (2.1 in)
1978	98.3 mm (3.9 in)
1979	95.2 mm (3.7 in)
1980	86.3 mm (3.4 in)
1981	123.9 mm (4.9 in)
1982	79.4 mm (3.1 in)
1983	261.7 mm (10.3 in)
1984	41.4 mm (1.6 in)
1985	128.8 mm (5.1 in)
1986	196.6 mm (7.7 in)
1987	227.9 mm (9.0 in)
1988	121.4 mm (4.8 in)
1989	135.2 mm (5.3 in)
1990	94.3 mm (3.7 in)
1991	155.7 mm (6.1 in)
1992	97.8 mm (3.9 in)
1993	78.7 mm (3.1 in)
1994	83.3 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grandfield 4 NW, 1941 to 1994. The record is 107 days in 1954, marked on the chart; the median year is 38 days.

Longest dry spell (CDD) at Grandfield 4 NW by year
Year	Longest dry spell (CDD)
1941	12 days
1942	28 days
1943	53 days
1944	33 days
1945	37 days
1946	31 days
1947	48 days
1948	31 days
1949	38 days
1950	102 days
1951	59 days
1952	103 days
1953	28 days
1954	107 days
1955	56 days
1956	71 days
1957	31 days
1958	38 days
1959	54 days
1960	35 days
1961	26 days
1962	31 days
1963	31 days
1964	42 days
1965	55 days
1966	52 days
1967	36 days
1968	24 days
1969	33 days
1970	54 days
1971	46 days
1972	40 days
1973	37 days
1974	51 days
1975	31 days
1976	35 days
1977	52 days
1978	50 days
1979	62 days
1980	71 days
1981	40 days
1982	32 days
1983	36 days
1984	21 days
1985	27 days
1986	33 days
1987	57 days
1988	31 days
1989	44 days
1990	39 days
1991	56 days
1992	60 days
1993	26 days
1994	32 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

50 years, 1943 to 1994

A day with at least 73.7 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 157.9 mm (6.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Grandfield 4 NW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	73.7 mm (2.9 in)
5 years	93.7 mm (3.7 in)
10 years	107.9 mm (4.2 in)
25 years	127.0 mm (5.0 in)
50 years	142.1 mm (5.6 in)
100 years	157.9 mm (6.2 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 1943 to 1994.

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: 160.8 mm (6.3 in) in 1987; 137.2 mm (5.4 in) in 1983; 133.4 mm (5.3 in) in 1950.

Download the Data

Data for Grandfield 4 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grandfield 4 NW 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 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