Bear Mtn Twr Weather Records (USC00340584)

Record envelope, standing records and threshold days for Bear Mtn Twr (USC00340584), Oklahoma, United States, with 61 years of record.

Key Facts for Bear Mtn Twr

Bear Mtn Twr (USC00340584) is a weather station in Oklahoma, United States at 34.14 latitude and -94.95 longitude, 244 m (800 ft) above sea level.
The station reports from 1938 to 1998, 61 years of record.
1,464 records set at Bear Mtn Twr still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Bear Mtn Twr set a daily record precipitation of 33.3 mm (1.3 in) on 8 January 1998.

About the Station

Location: Oklahoma, United States, 34.14 latitude, -94.95 longitude.
Elevation: 244 m (800 ft).
Period of record: 1938 to 1998, 61 years.
Eligible elements: tmax, tmin, 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 Bear Mtn Twr. 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 Bear Mtn Twr, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.6 C (78.1 F)	-19.4 C (-2.9 F)	n/a	n/a
Feb	31.1 C (88.0 F)	-17.2 C (1.0 F)	n/a	n/a
Mar	32.8 C (91.0 F)	-12.2 C (10.0 F)	n/a	n/a
Apr	34.4 C (93.9 F)	-3.9 C (25.0 F)	n/a	n/a
May	33.9 C (93.0 F)	2.8 C (37.0 F)	n/a	n/a
Jun	38.9 C (102.0 F)	8.3 C (46.9 F)	n/a	n/a
Jul	42.2 C (108.0 F)	11.1 C (52.0 F)	n/a	n/a
Aug	42.8 C (109.0 F)	9.4 C (48.9 F)	n/a	n/a
Sep	42.2 C (108.0 F)	2.2 C (36.0 F)	n/a	n/a
Oct	37.8 C (100.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	31.7 C (89.1 F)	-10.6 C (12.9 F)	n/a	n/a
Dec	26.1 C (79.0 F)	-17.2 C (1.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Bear Mtn Twr still stand. 1963 holds the most, with 65.

Standing records at Bear Mtn Twr by the year they were set
Year set	Standing records
1959	23
1960	44
1961	35
1962	38
1963	65
1964	46
1965	37
1966	53
1967	60
1968	37
1969	45
1970	47
1971	49
1972	51
1973	23
1974	50
1975	39
1976	57
1977	32
1978	46
1979	38
1980	60
1981	26
1982	33
1983	34
1984	30
1985	39
1986	33
1987	21
1988	27
1989	42
1990	25
1991	30
1992	33
1993	34
1994	19
1995	26
1996	23
1997	12
1998	2

All-Time Record Progression

1 new records

1 all-time records were set at Bear Mtn Twr between 18 February 1978 and 18 February 1978. Each dot is a new record.

Wettest Day of Each Month

Dec: 288.0 mm (11.3 in)

The wettest day on record for each calendar month at Bear Mtn Twr. The most was 288.0 mm (11.3 in) on 10 December 1971.

Record daily precipitation for each month at Bear Mtn Twr
Month	Record daily precipitation (mm)	Date
Jan	115.6 mm (4.6 in)	30 January 1969
Feb	128.3 mm (5.1 in)	9 February 1965
Mar	88.6 mm (3.5 in)	28 March 1977
Apr	110.7 mm (4.4 in)	29 April 1953
May	102.9 mm (4.1 in)	20 May 1960
Jun	83.8 mm (3.3 in)	6 June 1968
Jul	134.6 mm (5.3 in)	1 July 1951
Aug	143.5 mm (5.6 in)	21 August 1960
Sep	226.3 mm (8.9 in)	28 September 1980
Oct	204.7 mm (8.1 in)	25 October 1991
Nov	131.6 mm (5.2 in)	16 November 1978
Dec	288.0 mm (11.3 in)	10 December 1971

Period of Record Coverage

1959 to 1998

40 years of record at Bear Mtn Twr, 1959 to 1998. 22 years have data for under 90 percent of days and are left out of rankings: 1959, 1961, 1962, 1965, 1975, 1980, 1982, 1983 and others.

Days with data per year at Bear Mtn Twr
Year	Days with data	Share of year	Complete
1959	213	58%	No
1960	336	92%	Yes
1961	325	89%	No
1962	328	90%	No
1963	343	94%	Yes
1964	349	95%	Yes
1965	242	66%	No
1966	334	92%	Yes
1967	363	99%	Yes
1968	361	99%	Yes
1969	358	98%	Yes
1970	350	96%	Yes
1971	357	98%	Yes
1972	348	95%	Yes
1973	346	95%	Yes
1974	336	92%	Yes
1975	316	87%	No
1976	343	94%	Yes
1977	344	94%	Yes
1978	355	97%	Yes
1979	346	95%	Yes
1980	313	86%	No
1981	356	98%	Yes
1982	323	88%	No
1983	319	87%	No
1984	223	61%	No
1985	335	92%	Yes
1986	195	53%	No
1987	116	32%	No
1988	304	83%	No
1989	248	68%	No
1990	225	62%	No
1991	252	69%	No
1992	269	73%	No
1993	268	73%	No
1994	184	50%	No
1995	171	47%	No
1996	101	28%	No
1997	137	38%	No
1998	16	4%	No

Latest Records

Latest records at Bear Mtn Twr
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 January 1998	Bear Mtn Twr, US	daily rain	33.3 mm (1.3 in)	28.5 mm (1.1 in)	8 years	30 of 100 (Routine)
7 January 1998	Bear Mtn Twr, US	daily rain	19.3 mm (0.8 in)	0.8 mm (0.03 in)	10 years	9 of 100 (Routine)
6 January 1998	Bear Mtn Twr, US	daily high min (Tie)	12.2 C (54.0 F)	tie	32 years	3 of 100 (Routine)
5 January 1998	Bear Mtn Twr, US	daily rain	51.8 mm (2.0 in)	11.2 mm (0.4 in)	35 years	24 of 100 (Routine)
5 January 1998	Bear Mtn Twr, US	daily high min	11.7 C (53.1 F)	3.9 C (7.0 F)	6 years	11 of 100 (Routine)
3 January 1998	Bear Mtn Twr, US	daily high min	10.0 C (50.0 F)	1.7 C (3.1 F)	16 years	10 of 100 (Routine)
20 December 1997	Bear Mtn Twr, US	daily rain	22.9 mm (0.9 in)	0.8 mm (0.03 in)	44 years	19 of 100 (Routine)
8 December 1997	Bear Mtn Twr, US	daily rain	38.1 mm (1.5 in)	3.8 mm (0.15 in)	46 years	20 of 100 (Routine)
29 November 1997	Bear Mtn Twr, US	daily rain	26.4 mm (1.0 in)	8.1 mm (0.32 in)	44 years	23 of 100 (Routine)
29 November 1997	Bear Mtn Twr, US	daily high max	23.9 C (75.0 F)	1.1 C (2.0 F)	27 years	12 of 100 (Routine)
12 November 1997	Bear Mtn Twr, US	daily rain	9.7 mm (0.38 in)	2.8 mm (0.11 in)	15 years	11 of 100 (Routine)
12 November 1997	Bear Mtn Twr, US	daily low max (Tie)	8.3 C (46.9 F)	tie	20 years	2 of 100 (Routine)
11 November 1997	Bear Mtn Twr, US	daily low max	7.2 C (45.0 F)	5.0 C (9.0 F)	28 years	19 of 100 (Routine)
24 October 1997	Bear Mtn Twr, US	daily low max	13.9 C (57.0 F)	0.5 C (0.9 F)	16 years	8 of 100 (Routine)
22 October 1997	Bear Mtn Twr, US	daily low max	16.1 C (61.0 F)	1.7 C (3.1 F)	7 years	8 of 100 (Routine)
22 October 1997	Bear Mtn Twr, US	daily low min	3.3 C (37.9 F)	0.6 C (1.1 F)	4 years	5 of 100 (Routine)
13 October 1997	Bear Mtn Twr, US	daily rain	51.3 mm (2.0 in)	10.9 mm (0.4 in)	24 years	17 of 100 (Routine)
9 October 1997	Bear Mtn Twr, US	daily high min	19.4 C (66.9 F)	1.1 C (2.0 F)	24 years	12 of 100 (Routine)
24 September 1997	Bear Mtn Twr, US	daily rain	19.1 mm (0.8 in)	6.4 mm (0.25 in)	28 years	16 of 100 (Routine)
21 September 1997	Bear Mtn Twr, US	daily high max	36.1 C (97.0 F)	0.5 C (0.9 F)	34 years	14 of 100 (Routine)

Climate Trend

11 complete years, 1962 to 1988

One stripe for each of 11 complete years at Bear Mtn Twr, 1962 to 1988. Blue stripes are years cooler than the station's own mean of 16.8 C (62.2 F); red stripes are warmer. The coolest year was 1968, at 15.5 C (60.0 F), and the warmest was 1963, at 17.7 C (63.8 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Bear Mtn Twr as warming stripes, 1962 to 1988
Year	Annual mean temperature	Difference from the station mean
1962	17.2 C	+0.42 C
1963	17.7 C	+0.91 C
1967	16.7 C	-0.05 C
1968	15.5 C	-1.24 C
1969	16.7 C	-0.10 C
1970	17.2 C	+0.40 C
1971	17.5 C	+0.68 C
1978	16.4 C	-0.41 C
1981	16.4 C	-0.38 C
1983	16.2 C	-0.60 C
1988	17.1 C	+0.32 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1938 to 1998

Yearly extremes at Bear Mtn Twr: 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)	1964	39.4 C (102.9 F)	40
Coldest night (TNn)	-19.4 C (-2.9 F)	1962	-12.8 C (9.0 F)	40
Wettest day (Rx1day)	288.0 mm (11.3 in)	1971	82.0 mm (3.2 in)	56
Wettest five days (Rx5day)	381.0 mm (15.0 in)	1971	128.1 mm (5.0 in)	56
Longest dry spell (CDD)	43 days	1950	23 days	56

Hottest day (TXx)

The hottest day of the year at Bear Mtn Twr, 1938 to 1998. The record is 42.8 C (109.0 F) in 1964, marked on the chart; the median year is 39.4 C (102.9 F).

Hottest day (TXx) at Bear Mtn Twr by year
Year	Hottest day (TXx)
1938	n/a
1939	n/a
1942	n/a
1943	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	35.6 C (96.1 F)
1960	37.8 C (100.0 F)
1961	36.1 C (97.0 F)
1962	40.0 C (104.0 F)
1963	40.0 C (104.0 F)
1964	42.8 C (109.0 F)
1965	39.4 C (102.9 F)
1966	40.0 C (104.0 F)
1967	37.8 C (100.0 F)
1968	37.8 C (100.0 F)
1969	40.6 C (105.1 F)
1970	41.1 C (106.0 F)
1971	41.1 C (106.0 F)
1972	40.0 C (104.0 F)
1973	37.2 C (99.0 F)
1974	41.7 C (107.1 F)
1975	39.4 C (102.9 F)
1976	39.4 C (102.9 F)
1977	40.0 C (104.0 F)
1978	40.6 C (105.1 F)
1979	37.2 C (99.0 F)
1980	41.7 C (107.1 F)
1981	39.4 C (102.9 F)
1982	38.3 C (100.9 F)
1983	37.8 C (100.0 F)
1984	38.9 C (102.0 F)
1985	42.2 C (108.0 F)
1986	42.2 C (108.0 F)
1987	34.4 C (93.9 F)
1988	38.3 C (100.9 F)
1989	37.8 C (100.0 F)
1990	40.0 C (104.0 F)
1991	38.9 C (102.0 F)
1992	35.6 C (96.1 F)
1993	40.6 C (105.1 F)
1994	36.1 C (97.0 F)
1995	40.6 C (105.1 F)
1996	31.1 C (88.0 F)
1997	39.4 C (102.9 F)
1998	22.2 C (72.0 F)

Coldest night (TNn)

The coldest night of the year at Bear Mtn Twr, 1938 to 1998. The record is -19.4 C (-2.9 F) in 1962, marked on the chart; the median year is -12.8 C (9.0 F).

Coldest night (TNn) at Bear Mtn Twr by year
Year	Coldest night (TNn)
1938	n/a
1939	n/a
1942	n/a
1943	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	-8.9 C (16.0 F)
1960	-10.0 C (14.0 F)
1961	-11.7 C (10.9 F)
1962	-19.4 C (-2.9 F)
1963	-17.2 C (1.0 F)
1964	-15.6 C (3.9 F)
1965	-12.2 C (10.0 F)
1966	-17.8 C (0.0 F)
1967	-12.2 C (10.0 F)
1968	-15.6 C (3.9 F)
1969	-13.3 C (8.1 F)
1970	-14.4 C (6.1 F)
1971	-13.3 C (8.1 F)
1972	-13.3 C (8.1 F)
1973	-11.1 C (12.0 F)
1974	-12.2 C (10.0 F)
1975	-10.6 C (12.9 F)
1976	-15.6 C (3.9 F)
1977	-17.8 C (0.0 F)
1978	-12.8 C (9.0 F)
1979	-17.2 C (1.0 F)
1980	-11.7 C (10.9 F)
1981	-16.7 C (1.9 F)
1982	-18.9 C (-2.0 F)
1983	-17.2 C (1.0 F)
1984	-15.6 C (3.9 F)
1985	-17.8 C (0.0 F)
1986	-10.6 C (12.9 F)
1987	-6.1 C (21.0 F)
1988	-12.8 C (9.0 F)
1989	-17.2 C (1.0 F)
1990	-12.8 C (9.0 F)
1991	-10.6 C (12.9 F)
1992	-11.1 C (12.0 F)
1993	-10.0 C (14.0 F)
1994	-8.9 C (16.0 F)
1995	-10.6 C (12.9 F)
1996	-16.1 C (3.0 F)
1997	-5.6 C (21.9 F)
1998	-3.9 C (25.0 F)

Wettest day (Rx1day)

The wettest day of the year at Bear Mtn Twr, 1938 to 1998. The record is 288.0 mm (11.3 in) in 1971, marked on the chart; the median year is 82.0 mm (3.2 in).

Wettest day (Rx1day) at Bear Mtn Twr by year
Year	Wettest day (Rx1day)
1938	50.8 mm (2.0 in)
1939	38.1 mm (1.5 in)
1942	53.3 mm (2.1 in)
1943	68.6 mm (2.7 in)
1947	74.7 mm (2.9 in)
1948	61.7 mm (2.4 in)
1949	80.5 mm (3.2 in)
1950	115.6 mm (4.6 in)
1951	134.6 mm (5.3 in)
1952	72.1 mm (2.8 in)
1953	110.7 mm (4.4 in)
1954	191.3 mm (7.5 in)
1955	104.1 mm (4.1 in)
1956	80.3 mm (3.2 in)
1957	122.7 mm (4.8 in)
1958	66.0 mm (2.6 in)
1959	82.0 mm (3.2 in)
1960	143.5 mm (5.6 in)
1961	86.4 mm (3.4 in)
1962	80.8 mm (3.2 in)
1963	116.8 mm (4.6 in)
1964	75.9 mm (3.0 in)
1965	136.9 mm (5.4 in)
1966	101.6 mm (4.0 in)
1967	112.8 mm (4.4 in)
1968	102.4 mm (4.0 in)
1969	115.6 mm (4.6 in)
1970	49.5 mm (1.9 in)
1971	288.0 mm (11.3 in)
1972	67.1 mm (2.6 in)
1973	80.8 mm (3.2 in)
1974	97.0 mm (3.8 in)
1975	79.2 mm (3.1 in)
1976	70.4 mm (2.8 in)
1977	88.6 mm (3.5 in)
1978	131.6 mm (5.2 in)
1979	72.1 mm (2.8 in)
1980	226.3 mm (8.9 in)
1981	63.0 mm (2.5 in)
1982	100.3 mm (3.9 in)
1983	59.9 mm (2.4 in)
1984	94.0 mm (3.7 in)
1985	82.0 mm (3.2 in)
1986	67.8 mm (2.7 in)
1987	66.0 mm (2.6 in)
1988	136.4 mm (5.4 in)
1989	60.5 mm (2.4 in)
1990	94.7 mm (3.7 in)
1991	204.7 mm (8.1 in)
1992	92.7 mm (3.6 in)
1993	95.8 mm (3.8 in)
1994	88.9 mm (3.5 in)
1995	64.3 mm (2.5 in)
1996	41.7 mm (1.6 in)
1997	51.3 mm (2.0 in)
1998	51.8 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Bear Mtn Twr, 1938 to 1998. The record is 381.0 mm (15.0 in) in 1971, marked on the chart; the median year is 128.1 mm (5.0 in).

Wettest five days (Rx5day) at Bear Mtn Twr by year
Year	Wettest five days (Rx5day)
1938	86.4 mm (3.4 in)
1939	43.2 mm (1.7 in)
1942	59.6 mm (2.3 in)
1943	97.3 mm (3.8 in)
1947	112.8 mm (4.4 in)
1948	106.9 mm (4.2 in)
1949	164.9 mm (6.5 in)
1950	199.9 mm (7.9 in)
1951	143.7 mm (5.7 in)
1952	127.7 mm (5.0 in)
1953	205.3 mm (8.1 in)
1954	290.4 mm (11.4 in)
1955	113.7 mm (4.5 in)
1956	124.7 mm (4.9 in)
1957	140.5 mm (5.5 in)
1958	135.9 mm (5.4 in)
1959	120.2 mm (4.7 in)
1960	195.9 mm (7.7 in)
1961	146.0 mm (5.7 in)
1962	116.2 mm (4.6 in)
1963	172.7 mm (6.8 in)
1964	133.9 mm (5.3 in)
1965	163.9 mm (6.5 in)
1966	131.7 mm (5.2 in)
1967	126.7 mm (5.0 in)
1968	190.8 mm (7.5 in)
1969	146.1 mm (5.8 in)
1970	114.3 mm (4.5 in)
1971	381.0 mm (15.0 in)
1972	75.7 mm (3.0 in)
1973	143.7 mm (5.7 in)
1974	202.7 mm (8.0 in)
1975	92.0 mm (3.6 in)
1976	82.8 mm (3.3 in)
1977	140.9 mm (5.5 in)
1978	226.1 mm (8.9 in)
1979	108.4 mm (4.3 in)
1980	299.0 mm (11.8 in)
1981	148.9 mm (5.9 in)
1982	128.5 mm (5.1 in)
1983	93.6 mm (3.7 in)
1984	123.8 mm (4.9 in)
1985	117.6 mm (4.6 in)
1986	137.2 mm (5.4 in)
1987	83.3 mm (3.3 in)
1988	138.9 mm (5.5 in)
1989	114.8 mm (4.5 in)
1990	210.8 mm (8.3 in)
1991	266.4 mm (10.5 in)
1992	126.3 mm (5.0 in)
1993	211.1 mm (8.3 in)
1994	111.5 mm (4.4 in)
1995	81.8 mm (3.2 in)
1996	54.9 mm (2.2 in)
1997	110.5 mm (4.4 in)
1998	113.8 mm (4.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Bear Mtn Twr, 1938 to 1998. The record is 43 days in 1950, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Bear Mtn Twr by year
Year	Longest dry spell (CDD)
1938	12 days
1939	4 days
1942	10 days
1943	33 days
1947	26 days
1948	28 days
1949	27 days
1950	43 days
1951	26 days
1952	34 days
1953	25 days
1954	26 days
1955	39 days
1956	32 days
1957	20 days
1958	16 days
1959	28 days
1960	19 days
1961	19 days
1962	27 days
1963	41 days
1964	27 days
1965	25 days
1966	19 days
1967	21 days
1968	10 days
1969	21 days
1970	26 days
1971	25 days
1972	19 days
1973	14 days
1974	21 days
1975	38 days
1976	24 days
1977	34 days
1978	19 days
1979	24 days
1980	29 days
1981	20 days
1982	17 days
1983	17 days
1984	17 days
1985	17 days
1986	29 days
1987	16 days
1988	28 days
1989	19 days
1990	15 days
1991	29 days
1992	19 days
1993	31 days
1994	19 days
1995	26 days
1996	20 days
1997	15 days
1998	6 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, 1949 to 1989

A day with at least 90.1 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 317.1 mm (12.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Bear Mtn Twr: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	90.1 mm (3.5 in)
5 years	127.0 mm (5.0 in)
10 years	158.8 mm (6.3 in)
25 years	210.2 mm (8.3 in)
50 years	258.5 mm (10.2 in)	Longer than the 34 years of record
100 years	317.1 mm (12.5 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 1949 to 1989.

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: 288.0 mm (11.3 in) in 1971; 226.3 mm (8.9 in) in 1980; 191.3 mm (7.5 in) in 1954.

Download the Data

Data for Bear Mtn Twr standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bear Mtn Twr 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).