Sapulpa 1W Weather Records (USC00347921)

Record envelope, standing records and threshold days for Sapulpa 1W (USC00347921), Oklahoma, United States, with 77 years of record.

Key Facts for Sapulpa 1W

Sapulpa 1W (USC00347921) is a weather station in Oklahoma, United States at 36.00 latitude and -96.13 longitude, 207 m (679 ft) above sea level.
The station reports from 1899 to 1975, 77 years of record.
1,290 records set at Sapulpa 1W still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Sapulpa 1W set a daily record precipitation of 29.2 mm (1.1 in) on 19 July 1975.

About the Station

Location: Oklahoma, United States, 36.00 latitude, -96.13 longitude.
Elevation: 207 m (679 ft).
Period of record: 1899 to 1975, 77 years.
Eligible elements: prcp, snow.

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 Sapulpa 1W. 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 Sapulpa 1W, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.0 C (68.0 F)	-15.0 C (5.0 F)	n/a	n/a
Feb	20.0 C (68.0 F)	-15.0 C (5.0 F)	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	33.9 C (93.0 F)	-3.3 C (26.1 F)	n/a	n/a
May	33.9 C (93.0 F)	5.0 C (41.0 F)	n/a	n/a
Jun	36.7 C (98.1 F)	10.0 C (50.0 F)	n/a	n/a
Jul	42.8 C (109.0 F)	13.9 C (57.0 F)	n/a	n/a
Aug	41.7 C (107.1 F)	14.4 C (57.9 F)	n/a	n/a
Sep	40.6 C (105.1 F)	1.7 C (35.1 F)	n/a	n/a
Oct	35.0 C (95.0 F)	0.0 C (32.0 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-5.6 C (21.9 F)	n/a	n/a
Dec	17.2 C (63.0 F)	-10.0 C (14.0 F)	n/a	n/a

Which Years Hold Standing Records

1,290 standing records

1,290 records at Sapulpa 1W still stand. 1899 holds the most, with 701.

Wettest Day of Each Month

Sep: 198.1 mm (7.8 in)

The wettest day on record for each calendar month at Sapulpa 1W. The most was 198.1 mm (7.8 in) on 3 September 1940.

Record daily precipitation for each month at Sapulpa 1W
Month	Record daily precipitation (mm)	Date
Jan	67.3 mm (2.6 in)	5 January 1946
Feb	40.6 mm (1.6 in)	25 February 1899
Mar	78.7 mm (3.1 in)	28 March 1938
Apr	117.3 mm (4.6 in)	4 April 1964
May	111.8 mm (4.4 in)	10 May 1943
Jun	149.6 mm (5.9 in)	10 June 1941
Jul	94.0 mm (3.7 in)	12 July 1958
Aug	108.2 mm (4.3 in)	22 August 1971
Sep	198.1 mm (7.8 in)	3 September 1940
Oct	101.6 mm (4.0 in)	20 October 1971
Nov	81.0 mm (3.2 in)	3 November 1959
Dec	77.2 mm (3.0 in)	14 December 1971

Period of Record Coverage

1899 to 1901

3 years of record at Sapulpa 1W, 1899 to 1901. 3 years have data for under 90 percent of days and are left out of rankings: 1899, 1900, 1901.

Latest Records

Latest records at Sapulpa 1W
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 July 1975	Sapulpa 1W, US	daily rain	29.2 mm (1.1 in)	8.9 mm (0.35 in)	37 years	23 of 100 (Routine)
13 May 1975	Sapulpa 1W, US	daily rain	35.1 mm (1.4 in)	6.4 mm (0.25 in)	17 years	15 of 100 (Routine)
2 May 1975	Sapulpa 1W, US	daily rain	46.2 mm (1.8 in)	12.2 mm (0.5 in)	28 years	21 of 100 (Routine)
27 March 1975	Sapulpa 1W, US	daily rain	35.1 mm (1.4 in)	7.2 mm (0.28 in)	28 years	20 of 100 (Routine)
13 March 1975	Sapulpa 1W, US	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	36 years	20 of 100 (Routine)
3 March 1975	Sapulpa 1W, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	36 years	28 of 100 (Routine)
23 February 1975	Sapulpa 1W, US	daily snowfall	4.3 cm (1.7 in)	1.8 cm (0.7 in)	9 years	14 of 100 (Routine)
22 February 1975	Sapulpa 1W, US	daily rain	34.5 mm (1.4 in)	23.6 mm (0.9 in)	4 years	37 of 100 (Notable)
16 February 1975	Sapulpa 1W, US	daily rain	16.3 mm (0.6 in)	1.6 mm (0.06 in)	32 years	17 of 100 (Routine)
6 February 1975	Sapulpa 1W, US	daily snowfall (Tie)	3.8 cm (1.5 in)	tie	13 years	2 of 100 (Routine)
30 January 1975	Sapulpa 1W, US	daily rain	29.2 mm (1.1 in)	1.3 mm (0.05 in)	36 years	18 of 100 (Routine)
2 January 1975	Sapulpa 1W, US	daily rain	19.8 mm (0.8 in)	4.3 mm (0.17 in)	24 years	18 of 100 (Routine)
6 December 1974	Sapulpa 1W, US	daily rain	36.3 mm (1.4 in)	15.5 mm (0.6 in)	31 years	31 of 100 (Routine)
29 November 1974	Sapulpa 1W, US	monthly snowfall (Tie)	5.1 cm (2.0 in)	tie	37 years	7 of 100 (Routine)
2 November 1974	Sapulpa 1W, US	daily rain	61.2 mm (2.4 in)	3.5 mm (0.14 in)	28 years	17 of 100 (Routine)
28 October 1974	Sapulpa 1W, US	daily rain	46.7 mm (1.8 in)	27.4 mm (1.1 in)	12 years	24 of 100 (Routine)
2 September 1974	Sapulpa 1W, US	daily rain	65.5 mm (2.6 in)	34.8 mm (1.4 in)	4 years	20 of 100 (Routine)
9 August 1974	Sapulpa 1W, US	daily rain	83.6 mm (3.3 in)	53.9 mm (2.1 in)	0 years	37 of 100 (Notable)
8 June 1974	Sapulpa 1W, US	daily rain	132.1 mm (5.2 in)	99.1 mm (3.9 in)	24 years	54 of 100 (Notable)
20 March 1974	Sapulpa 1W, US	daily snowfall	3.8 cm (1.5 in)	3.8 cm (1.5 in)	36 years	20 of 100 (Routine)

Extremes by Year

1899 to 1975

Yearly extremes at Sapulpa 1W: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1901	41.7 C (107.1 F)	3
Coldest night (TNn)	-15.0 C (5.0 F)	1900	-10.0 C (14.0 F)	3
Wettest day (Rx1day)	198.1 mm (7.8 in)	1940	78.1 mm (3.1 in)	42
Wettest five days (Rx5day)	414.0 mm (16.3 in)	1940	115.8 mm (4.6 in)	42
Longest dry spell (CDD)	79 days	1965	29 days	42

Hottest day (TXx)

The hottest day of the year at Sapulpa 1W, 1899 to 1975. The record is 42.8 C (109.0 F) in 1901, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Sapulpa 1W by year
Year	Hottest day (TXx)
1899	41.7 C (107.1 F)
1900	27.8 C (82.0 F)
1901	42.8 C (109.0 F)
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a

Coldest night (TNn)

The coldest night of the year at Sapulpa 1W, 1899 to 1975. The record is -15.0 C (5.0 F) in 1900, marked on the chart; the median year is -10.0 C (14.0 F).

Coldest night (TNn) at Sapulpa 1W by year
Year	Coldest night (TNn)
1899	-10.0 C (14.0 F)
1900	-15.0 C (5.0 F)
1901	-3.3 C (26.1 F)
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a

Wettest day (Rx1day)

The wettest day of the year at Sapulpa 1W, 1899 to 1975. The record is 198.1 mm (7.8 in) in 1940, marked on the chart; the median year is 78.1 mm (3.1 in).

Wettest day (Rx1day) at Sapulpa 1W by year
Year	Wettest day (Rx1day)
1899	71.1 mm (2.8 in)
1900	44.5 mm (1.8 in)
1901	48.3 mm (1.9 in)
1937	88.9 mm (3.5 in)
1938	78.7 mm (3.1 in)
1939	53.3 mm (2.1 in)
1940	198.1 mm (7.8 in)
1941	149.6 mm (5.9 in)
1942	85.1 mm (3.4 in)
1943	111.8 mm (4.4 in)
1944	41.7 mm (1.6 in)
1945	112.3 mm (4.4 in)
1946	76.2 mm (3.0 in)
1947	67.3 mm (2.6 in)
1948	107.2 mm (4.2 in)
1949	99.1 mm (3.9 in)
1950	89.9 mm (3.5 in)
1951	67.8 mm (2.7 in)
1952	44.2 mm (1.7 in)
1953	83.8 mm (3.3 in)
1954	77.5 mm (3.1 in)
1955	59.7 mm (2.4 in)
1956	77.5 mm (3.1 in)
1957	77.0 mm (3.0 in)
1958	94.0 mm (3.7 in)
1959	91.4 mm (3.6 in)
1960	73.9 mm (2.9 in)
1961	63.0 mm (2.5 in)
1962	95.5 mm (3.8 in)
1963	60.7 mm (2.4 in)
1964	117.3 mm (4.6 in)
1965	81.5 mm (3.2 in)
1966	45.5 mm (1.8 in)
1967	72.6 mm (2.9 in)
1968	72.1 mm (2.8 in)
1969	92.7 mm (3.6 in)
1970	145.0 mm (5.7 in)
1971	185.4 mm (7.3 in)
1972	54.9 mm (2.2 in)
1973	80.5 mm (3.2 in)
1974	132.1 mm (5.2 in)
1975	46.2 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sapulpa 1W, 1899 to 1975. The record is 414.0 mm (16.3 in) in 1940, marked on the chart; the median year is 115.8 mm (4.6 in).

Wettest five days (Rx5day) at Sapulpa 1W by year
Year	Wettest five days (Rx5day)
1899	109.2 mm (4.3 in)
1900	59.7 mm (2.4 in)
1901	53.3 mm (2.1 in)
1937	94.0 mm (3.7 in)
1938	101.6 mm (4.0 in)
1939	91.4 mm (3.6 in)
1940	414.0 mm (16.3 in)
1941	206.8 mm (8.1 in)
1942	139.9 mm (5.5 in)
1943	240.8 mm (9.5 in)
1944	89.6 mm (3.5 in)
1945	210.5 mm (8.3 in)
1946	133.9 mm (5.3 in)
1947	136.6 mm (5.4 in)
1948	139.0 mm (5.5 in)
1949	182.8 mm (7.2 in)
1950	134.6 mm (5.3 in)
1951	102.0 mm (4.0 in)
1952	62.0 mm (2.4 in)
1953	105.9 mm (4.2 in)
1954	125.7 mm (4.9 in)
1955	116.3 mm (4.6 in)
1956	83.8 mm (3.3 in)
1957	122.7 mm (4.8 in)
1958	115.2 mm (4.5 in)
1959	218.2 mm (8.6 in)
1960	84.6 mm (3.3 in)
1961	129.5 mm (5.1 in)
1962	128.0 mm (5.0 in)
1963	70.1 mm (2.8 in)
1964	125.7 mm (4.9 in)
1965	89.9 mm (3.5 in)
1966	70.1 mm (2.8 in)
1967	86.9 mm (3.4 in)
1968	106.1 mm (4.2 in)
1969	101.3 mm (4.0 in)
1970	168.6 mm (6.6 in)
1971	224.0 mm (8.8 in)
1972	92.4 mm (3.6 in)
1973	154.0 mm (6.1 in)
1974	192.8 mm (7.6 in)
1975	70.4 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sapulpa 1W, 1899 to 1975. The record is 79 days in 1965, marked on the chart; the median year is 29 days.

Longest dry spell (CDD) at Sapulpa 1W by year
Year	Longest dry spell (CDD)
1899	32 days
1900	23 days
1901	26 days
1937	24 days
1938	42 days
1939	24 days
1940	31 days
1941	19 days
1942	26 days
1943	42 days
1944	27 days
1945	36 days
1946	33 days
1947	39 days
1948	39 days
1949	40 days
1950	58 days
1951	23 days
1952	57 days
1953	26 days
1954	37 days
1955	56 days
1956	29 days
1957	35 days
1958	16 days
1959	36 days
1960	20 days
1961	22 days
1962	27 days
1963	54 days
1964	29 days
1965	79 days
1966	29 days
1967	25 days
1968	19 days
1969	25 days
1970	30 days
1971	30 days
1972	28 days
1973	19 days
1974	21 days
1975	13 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

34 years, 1940 to 1974

A day with at least 83.6 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 230.4 mm (9.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Sapulpa 1W: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	83.6 mm (3.3 in)
5 years	113.6 mm (4.5 in)
10 years	136.8 mm (5.4 in)
25 years	170.4 mm (6.7 in)
50 years	198.8 mm (7.8 in)	Longer than the 34 years of record
100 years	230.4 mm (9.1 in)	Longer than the 34 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, 34 years of values from 1940 to 1974.

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: 198.1 mm (7.8 in) in 1940; 185.4 mm (7.3 in) in 1971; 149.6 mm (5.9 in) in 1941.

Download the Data

Data for Sapulpa 1W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sapulpa 1W 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).

Days with data per year at Sapulpa 1W
Year	Days with data	Share of year	Complete
1899	249	68%	No
1900	76	21%	No
1901	147	40%	No