Hallett 1 NW Weather Records (USC00343862)

Record envelope, standing records and threshold days for Hallett 1 NW (USC00343862), Oklahoma, United States, with 30 years of record.

Key Facts for Hallett 1 NW

Hallett 1 NW (USC00343862) is a weather station in Oklahoma, United States at 36.25 latitude and -96.60 longitude, 287 m (942 ft) above sea level.
The station reports from 1944 to 1973, 30 years of record.
582 records set at Hallett 1 NW still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Oklahoma, United States, 36.25 latitude, -96.60 longitude.
Elevation: 287 m (942 ft).
Period of record: 1944 to 1973, 30 years.
Eligible elements: none yet.

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 Hallett 1 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 Hallett 1 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	39.4 C (102.9 F)	n/a	n/a	n/a
Aug	39.4 C (102.9 F)	18.9 C (66.0 F)	n/a	n/a
Sep	38.9 C (102.0 F)	12.2 C (54.0 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-1.1 C (30.0 F)	n/a	n/a
Nov	20.0 C (68.0 F)	-5.6 C (21.9 F)	n/a	n/a
Dec	17.8 C (64.0 F)	-8.9 C (16.0 F)	n/a	n/a

Which Years Hold Standing Records

582 standing records

582 records at Hallett 1 NW still stand. 1947 holds the most, with 571.

Wettest Day of Each Month

Oct: 247.7 mm (9.8 in)

The wettest day on record for each calendar month at Hallett 1 NW. The most was 247.7 mm (9.8 in) on 2 October 1959.

Record daily precipitation for each month at Hallett 1 NW
Month	Record daily precipitation (mm)	Date
Jan	42.4 mm (1.7 in)	26 January 1967
Feb	43.4 mm (1.7 in)	20 February 1951
Mar	88.9 mm (3.5 in)	19 March 1968
Apr	109.7 mm (4.3 in)	30 April 1954
May	114.3 mm (4.5 in)	21 May 1957
Jun	91.4 mm (3.6 in)	22 June 1948
Jul	153.7 mm (6.1 in)	3 July 1960
Aug	84.3 mm (3.3 in)	15 August 1969
Sep	129.5 mm (5.1 in)	13 September 1961
Oct	247.7 mm (9.8 in)	2 October 1959
Nov	47.2 mm (1.9 in)	2 November 1946
Dec	62.0 mm (2.4 in)	24 December 1965

Period of Record Coverage

1947 to 1970

2 years of record at Hallett 1 NW, 1947 to 1970. 2 years have data for under 90 percent of days and are left out of rankings: 1947, 1970.

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1944 to 1973

Yearly extremes at Hallett 1 NW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	1947	39.4 C (102.9 F)	2
Coldest night (TNn)	-8.9 C (16.0 F)	1947	-5.0 C (23.0 F)	2
Wettest day (Rx1day)	247.7 mm (9.8 in)	1959	70.5 mm (2.8 in)	30
Wettest five days (Rx5day)	407.7 mm (16.1 in)	1959	103.3 mm (4.1 in)	30
Longest dry spell (CDD)	58 days	1950	31 days	30

Hottest day (TXx)

The hottest day of the year at Hallett 1 NW, 1944 to 1973. The record is 39.4 C (102.9 F) in 1947, marked on the chart; the median year is 39.4 C (102.9 F).

Hottest day (TXx) at Hallett 1 NW by year
Year	Hottest day (TXx)
1944	n/a
1945	n/a
1946	n/a
1947	39.4 C (102.9 F)
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	39.4 C (102.9 F)
1971	n/a
1972	n/a
1973	n/a

Coldest night (TNn)

The coldest night of the year at Hallett 1 NW, 1944 to 1973. The record is -8.9 C (16.0 F) in 1947, marked on the chart; the median year is -5.0 C (23.0 F).

Coldest night (TNn) at Hallett 1 NW by year
Year	Coldest night (TNn)
1944	n/a
1945	n/a
1946	n/a
1947	-8.9 C (16.0 F)
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	-1.1 C (30.0 F)
1971	n/a
1972	n/a
1973	n/a

Wettest day (Rx1day)

The wettest day of the year at Hallett 1 NW, 1944 to 1973. The record is 247.7 mm (9.8 in) in 1959, marked on the chart; the median year is 70.5 mm (2.8 in).

Wettest day (Rx1day) at Hallett 1 NW by year
Year	Wettest day (Rx1day)
1944	44.5 mm (1.8 in)
1945	17.8 mm (0.7 in)
1946	51.3 mm (2.0 in)
1947	72.6 mm (2.9 in)
1948	91.4 mm (3.6 in)
1949	63.5 mm (2.5 in)
1950	92.7 mm (3.6 in)
1951	69.9 mm (2.8 in)
1952	54.1 mm (2.1 in)
1953	53.3 mm (2.1 in)
1954	109.7 mm (4.3 in)
1955	81.3 mm (3.2 in)
1956	91.4 mm (3.6 in)
1957	114.3 mm (4.5 in)
1958	63.5 mm (2.5 in)
1959	247.7 mm (9.8 in)
1960	153.7 mm (6.1 in)
1961	129.5 mm (5.1 in)
1962	71.1 mm (2.8 in)
1963	67.6 mm (2.7 in)
1964	55.1 mm (2.2 in)
1965	62.0 mm (2.4 in)
1966	36.6 mm (1.4 in)
1967	55.9 mm (2.2 in)
1968	88.9 mm (3.5 in)
1969	153.7 mm (6.1 in)
1970	86.1 mm (3.4 in)
1971	119.4 mm (4.7 in)
1972	60.5 mm (2.4 in)
1973	41.7 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Hallett 1 NW, 1944 to 1973. The record is 407.7 mm (16.1 in) in 1959, marked on the chart; the median year is 103.3 mm (4.1 in).

Wettest five days (Rx5day) at Hallett 1 NW by year
Year	Wettest five days (Rx5day)
1944	59.3 mm (2.3 in)
1945	22.8 mm (0.9 in)
1946	100.9 mm (4.0 in)
1947	103.9 mm (4.1 in)
1948	197.3 mm (7.8 in)
1949	113.1 mm (4.5 in)
1950	103.3 mm (4.1 in)
1951	103.2 mm (4.1 in)
1952	82.3 mm (3.2 in)
1953	65.3 mm (2.6 in)
1954	168.4 mm (6.6 in)
1955	148.9 mm (5.9 in)
1956	101.1 mm (4.0 in)
1957	196.9 mm (7.8 in)
1958	77.7 mm (3.1 in)
1959	407.7 mm (16.1 in)
1960	188.8 mm (7.4 in)
1961	147.3 mm (5.8 in)
1962	116.5 mm (4.6 in)
1963	80.6 mm (3.2 in)
1964	64.2 mm (2.5 in)
1965	95.4 mm (3.8 in)
1966	66.8 mm (2.6 in)
1967	97.7 mm (3.8 in)
1968	111.0 mm (4.4 in)
1969	155.0 mm (6.1 in)
1970	96.5 mm (3.8 in)
1971	148.6 mm (5.9 in)
1972	117.4 mm (4.6 in)
1973	78.0 mm (3.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Hallett 1 NW, 1944 to 1973. The record is 58 days in 1950, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Hallett 1 NW by year
Year	Longest dry spell (CDD)
1944	32 days
1945	30 days
1946	38 days
1947	39 days
1948	24 days
1949	39 days
1950	58 days
1951	16 days
1952	52 days
1953	28 days
1954	47 days
1955	56 days
1956	34 days
1957	20 days
1958	17 days
1959	35 days
1960	27 days
1961	22 days
1962	24 days
1963	54 days
1964	29 days
1965	33 days
1966	34 days
1967	24 days
1968	18 days
1969	25 days
1970	31 days
1971	50 days
1972	30 days
1973	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.

Download the Data

Data for Hallett 1 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hallett 1 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 2026-10-15 (15 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).

Year	Days with data	Share of year	Complete
1947	140	38%	No
1970	5	1%	No