Karthaus River Weather Records (USC00364450)

Record envelope, standing records and threshold days for Karthaus River (USC00364450), Pennsylvania, United States, with 78 years of record.

Key Facts for Karthaus River

Karthaus River (USC00364450) is a weather station in Pennsylvania, United States at 41.12 latitude and -78.11 longitude, 290 m (950 ft) above sea level.
The station reports from 1895 to 1972, 78 years of record.
1,464 records set at Karthaus River still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Karthaus River set a daily record precipitation of 30.7 mm (1.2 in) on 17 April 1972.

About the Station

Location: Pennsylvania, United States, 41.12 latitude, -78.11 longitude.
Elevation: 290 m (950 ft).
Period of record: 1895 to 1972, 78 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 Karthaus River. 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 Karthaus River, 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)	-29.4 C (-20.9 F)	n/a	n/a
Feb	17.8 C (64.0 F)	-29.4 C (-20.9 F)	n/a	n/a
Mar	25.6 C (78.1 F)	-21.1 C (-6.0 F)	n/a	n/a
Apr	28.3 C (82.9 F)	-12.8 C (9.0 F)	n/a	n/a
May	32.8 C (91.0 F)	-7.8 C (18.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	-2.8 C (27.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	0.6 C (33.1 F)	n/a	n/a
Aug	33.3 C (91.9 F)	0.0 C (32.0 F)	n/a	n/a
Sep	34.4 C (93.9 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-10.6 C (12.9 F)	n/a	n/a
Nov	23.9 C (75.0 F)	-17.8 C (0.0 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-25.0 C (-13.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Karthaus River still stand. 1964 holds the most, with 206.

Wettest Day of Each Month

Jun: 84.6 mm (3.3 in)

The wettest day on record for each calendar month at Karthaus River. The most was 84.6 mm (3.3 in) on 15 June 1960.

Record daily precipitation for each month at Karthaus River
Month	Record daily precipitation (mm)	Date
Jan	46.2 mm (1.8 in)	2 January 1948
Feb	40.9 mm (1.6 in)	14 February 1966
Mar	50.8 mm (2.0 in)	22 March 1898
Apr	51.6 mm (2.0 in)	12 April 1948
May	75.2 mm (3.0 in)	26 May 1953
Jun	84.6 mm (3.3 in)	15 June 1960
Jul	61.0 mm (2.4 in)	10 July 1971
Aug	57.2 mm (2.3 in)	20 August 1948
Sep	78.7 mm (3.1 in)	4 September 1966
Oct	72.9 mm (2.9 in)	16 October 1954
Nov	60.7 mm (2.4 in)	26 November 1950
Dec	51.1 mm (2.0 in)	30 December 1942

Period of Record Coverage

1963 to 1972

10 years of record at Karthaus River, 1963 to 1972. 6 years have data for under 90 percent of days and are left out of rankings: 1963, 1966, 1967, 1968, 1969, 1972.

Days with data per year at Karthaus River
Year	Days with data	Share of year	Complete
1963	235	64%	No
1964	356	97%	Yes
1965	353	97%	Yes
1966	320	88%	No
1967	321	88%	No
1968	216	59%	No
1969	166	45%	No
1970	353	97%	Yes
1971	362	99%	Yes
1972	152	42%	No

Latest Records

Latest records at Karthaus River
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 April 1972	Karthaus River, US	daily rain	30.7 mm (1.2 in)	0.2 mm (0.01 in)	52 years	22 of 100 (Routine)
3 March 1972	Karthaus River, US	daily rain	23.6 mm (0.9 in)	4.5 mm (0.18 in)	30 years	20 of 100 (Routine)
8 December 1971	Karthaus River, US	daily rain	17.5 mm (0.7 in)	2.5 mm (0.10 in)	1 year	10 of 100 (Routine)
7 December 1971	Karthaus River, US	daily rain	24.1 mm (0.9 in)	10.1 mm (0.4 in)	17 years	20 of 100 (Routine)
20 September 1971	Karthaus River, US	daily rain	28.2 mm (1.1 in)	3.6 mm (0.14 in)	17 years	15 of 100 (Routine)
10 July 1971	Karthaus River, US	monthly rain	61.0 mm (2.4 in)	8.9 mm (0.35 in)	25 years	33 of 100 (Routine)
13 February 1971	Karthaus River, US	daily rain	24.1 mm (0.9 in)	14.2 mm (0.6 in)	74 years	20 of 100 (Routine)
6 February 1971	Karthaus River, US	daily rain	13.7 mm (0.5 in)	3.5 mm (0.14 in)	71 years	20 of 100 (Routine)
31 January 1971	Karthaus River, US	daily rain	13.0 mm (0.5 in)	0.8 mm (0.03 in)	3 years	8 of 100 (Routine)
5 January 1971	Karthaus River, US	daily rain	13.0 mm (0.5 in)	8.2 mm (0.32 in)	23 years	20 of 100 (Routine)
15 November 1970	Karthaus River, US	daily rain	21.3 mm (0.8 in)	11.6 mm (0.5 in)	8 years	20 of 100 (Routine)
13 November 1970	Karthaus River, US	daily rain	24.6 mm (1.0 in)	17.7 mm (0.7 in)	3 years	20 of 100 (Routine)
12 November 1970	Karthaus River, US	daily rain	11.9 mm (0.5 in)	0.7 mm (0.03 in)	23 years	13 of 100 (Routine)
31 October 1970	Karthaus River, US	daily rain	19.1 mm (0.8 in)	1.3 mm (0.05 in)	20 years	14 of 100 (Routine)
22 October 1970	Karthaus River, US	daily rain	24.6 mm (1.0 in)	16.5 mm (0.6 in)	4 years	20 of 100 (Routine)
13 October 1970	Karthaus River, US	daily rain	17.3 mm (0.7 in)	6.6 mm (0.26 in)	24 years	20 of 100 (Routine)
12 October 1970	Karthaus River, US	daily rain	26.9 mm (1.1 in)	15.0 mm (0.6 in)	73 years	43 of 100 (Notable)
31 August 1970	Karthaus River, US	daily rain	23.6 mm (0.9 in)	3.8 mm (0.15 in)	15 years	14 of 100 (Routine)
23 August 1970	Karthaus River, US	daily rain	38.6 mm (1.5 in)	13.2 mm (0.5 in)	11 years	22 of 100 (Routine)
1 August 1970	Karthaus River, US	daily rain	30.7 mm (1.2 in)	1.5 mm (0.06 in)	24 years	15 of 100 (Routine)

Extremes by Year

1895 to 1972

Yearly extremes at Karthaus River: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1966	33.9 C (93.0 F)	10
Coldest night (TNn)	-29.4 C (-20.9 F)	1965	-26.9 C (-16.5 F)	10
Wettest day (Rx1day)	84.6 mm (3.3 in)	1960	47.9 mm (1.9 in)	40
Wettest five days (Rx5day)	120.6 mm (4.7 in)	1898	74.9 mm (2.9 in)	40
Longest dry spell (CDD)	43 days	1895	16 days	40

Hottest day (TXx)

The hottest day of the year at Karthaus River, 1895 to 1972. The record is 37.8 C (100.0 F) in 1966, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Karthaus River by year
Year	Hottest day (TXx)
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1901	n/a
1902	n/a
1920	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	34.4 C (93.9 F)
1964	34.4 C (93.9 F)
1965	33.3 C (91.9 F)
1966	37.8 C (100.0 F)
1967	33.9 C (93.0 F)
1968	33.9 C (93.0 F)
1969	33.3 C (91.9 F)
1970	32.8 C (91.0 F)
1971	35.6 C (96.1 F)
1972	31.7 C (89.1 F)

Coldest night (TNn)

The coldest night of the year at Karthaus River, 1895 to 1972. The record is -29.4 C (-20.9 F) in 1965, marked on the chart; the median year is -26.9 C (-16.5 F).

Coldest night (TNn) at Karthaus River by year
Year	Coldest night (TNn)
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1901	n/a
1902	n/a
1920	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	-25.0 C (-13.0 F)
1964	-26.1 C (-15.0 F)
1965	-29.4 C (-20.9 F)
1966	-27.8 C (-18.0 F)
1967	-29.4 C (-20.9 F)
1968	-28.3 C (-18.9 F)
1969	-22.8 C (-9.0 F)
1970	-26.7 C (-16.1 F)
1971	-27.2 C (-17.0 F)
1972	-25.0 C (-13.0 F)

Wettest day (Rx1day)

The wettest day of the year at Karthaus River, 1895 to 1972. The record is 84.6 mm (3.3 in) in 1960, marked on the chart; the median year is 47.9 mm (1.9 in).

Wettest day (Rx1day) at Karthaus River by year
Year	Wettest day (Rx1day)
1895	50.8 mm (2.0 in)
1896	30.5 mm (1.2 in)
1897	24.4 mm (1.0 in)
1898	50.8 mm (2.0 in)
1899	30.5 mm (1.2 in)
1901	32.0 mm (1.3 in)
1902	29.5 mm (1.2 in)
1920	53.3 mm (2.1 in)
1941	48.3 mm (1.9 in)
1942	51.1 mm (2.0 in)
1943	48.8 mm (1.9 in)
1944	37.8 mm (1.5 in)
1945	44.5 mm (1.8 in)
1946	53.3 mm (2.1 in)
1947	32.5 mm (1.3 in)
1948	57.2 mm (2.3 in)
1949	61.0 mm (2.4 in)
1950	60.7 mm (2.4 in)
1951	41.9 mm (1.6 in)
1952	51.6 mm (2.0 in)
1953	75.2 mm (3.0 in)
1954	72.9 mm (2.9 in)
1955	64.0 mm (2.5 in)
1956	44.5 mm (1.8 in)
1957	31.2 mm (1.2 in)
1958	43.9 mm (1.7 in)
1959	43.7 mm (1.7 in)
1960	84.6 mm (3.3 in)
1961	50.0 mm (2.0 in)
1962	45.7 mm (1.8 in)
1963	34.3 mm (1.4 in)
1964	45.2 mm (1.8 in)
1965	47.5 mm (1.9 in)
1966	78.7 mm (3.1 in)
1967	63.5 mm (2.5 in)
1968	45.7 mm (1.8 in)
1969	41.1 mm (1.6 in)
1970	50.3 mm (2.0 in)
1971	61.0 mm (2.4 in)
1972	30.7 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Karthaus River, 1895 to 1972. The record is 120.6 mm (4.7 in) in 1898, marked on the chart; the median year is 74.9 mm (2.9 in).

Wettest five days (Rx5day) at Karthaus River by year
Year	Wettest five days (Rx5day)
1895	54.1 mm (2.1 in)
1896	54.6 mm (2.1 in)
1897	54.8 mm (2.2 in)
1898	120.6 mm (4.7 in)
1899	55.9 mm (2.2 in)
1901	32.0 mm (1.3 in)
1902	34.8 mm (1.4 in)
1920	81.3 mm (3.2 in)
1941	64.5 mm (2.5 in)
1942	91.2 mm (3.6 in)
1943	91.2 mm (3.6 in)
1944	58.9 mm (2.3 in)
1945	62.1 mm (2.4 in)
1946	109.2 mm (4.3 in)
1947	54.4 mm (2.1 in)
1948	114.9 mm (4.5 in)
1949	75.8 mm (3.0 in)
1950	116.4 mm (4.6 in)
1951	116.1 mm (4.6 in)
1952	86.3 mm (3.4 in)
1953	111.7 mm (4.4 in)
1954	77.2 mm (3.0 in)
1955	99.9 mm (3.9 in)
1956	91.2 mm (3.6 in)
1957	73.4 mm (2.9 in)
1958	66.8 mm (2.6 in)
1959	73.9 mm (2.9 in)
1960	111.8 mm (4.4 in)
1961	58.9 mm (2.3 in)
1962	62.8 mm (2.5 in)
1963	58.5 mm (2.3 in)
1964	90.3 mm (3.6 in)
1965	79.7 mm (3.1 in)
1966	87.6 mm (3.4 in)
1967	72.6 mm (2.9 in)
1968	59.2 mm (2.3 in)
1969	105.1 mm (4.1 in)
1970	88.9 mm (3.5 in)
1971	70.4 mm (2.8 in)
1972	48.5 mm (1.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Karthaus River, 1895 to 1972. The record is 43 days in 1895, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Karthaus River by year
Year	Longest dry spell (CDD)
1895	43 days
1896	27 days
1897	25 days
1898	33 days
1899	20 days
1901	24 days
1902	8 days
1920	11 days
1941	19 days
1942	20 days
1943	15 days
1944	10 days
1945	8 days
1946	22 days
1947	18 days
1948	13 days
1949	14 days
1950	14 days
1951	12 days
1952	21 days
1953	18 days
1954	14 days
1955	17 days
1956	13 days
1957	14 days
1958	12 days
1959	24 days
1960	12 days
1961	13 days
1962	8 days
1963	31 days
1964	26 days
1965	13 days
1966	19 days
1967	24 days
1968	18 days
1969	12 days
1970	12 days
1971	17 days
1972	11 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 Karthaus River standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Karthaus River 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).