Clarence Weather Records (USC00361480)

Record envelope, standing records and threshold days for Clarence (USC00361480), Pennsylvania, United States, with 70 years of record.

Key Facts for Clarence

Clarence (USC00361480) is a weather station in Pennsylvania, United States at 41.05 latitude and -77.94 longitude, 424 m (1,390 ft) above sea level.
The station reports from 1950 to 2019, 70 years of record.
1,464 records set at Clarence still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Clarence set a daily record precipitation of 41.9 mm (1.6 in) on 2 September 2019.

About the Station

Location: Pennsylvania, United States, 41.05 latitude, -77.94 longitude.
Elevation: 424 m (1,390 ft).
Period of record: 1950 to 2019, 70 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 Clarence. 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 Clarence, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.2 C (63.0 F)	-33.9 C (-29.0 F)	n/a	n/a
Feb	23.3 C (73.9 F)	-31.7 C (-25.1 F)	n/a	n/a
Mar	26.7 C (80.1 F)	-29.4 C (-20.9 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-11.1 C (12.0 F)	n/a	n/a
May	32.2 C (90.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	32.8 C (91.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	33.3 C (91.9 F)	1.7 C (35.1 F)	n/a	n/a
Sep	33.3 C (91.9 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-8.3 C (17.1 F)	n/a	n/a
Nov	25.0 C (77.0 F)	-16.1 C (3.0 F)	n/a	n/a
Dec	20.6 C (69.1 F)	-22.2 C (-8.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Clarence still stand. 2013 holds the most, with 151.

All-Time Record Progression

4 new records

4 all-time records were set at Clarence between 14 March 1993 and 18 September 2004. Each dot is a new record.

When Clarence set new all-time records
Date	Kind	Detail
1993-03-14	Record daily snowfall	Record daily snowfall 64.8 cm (25.5 in)
1994-03-03	Record snow depth	Record snow depth 109.2 cm (43.0 in)
1994-08-18	Record daily precipitation	Record daily precipitation 109.0 mm (4.3 in)
2004-09-18	Record daily precipitation	Record daily precipitation 118.6 mm (4.7 in)

Wettest Day of Each Month

Sep: 118.6 mm (4.7 in)

The wettest day on record for each calendar month at Clarence. The most was 118.6 mm (4.7 in) on 18 September 2004.

Record daily precipitation for each month at Clarence
Month	Record daily precipitation (mm)	Date
Jan	53.3 mm (2.1 in)	20 January 1996
Feb	62.0 mm (2.4 in)	15 February 1984
Mar	63.0 mm (2.5 in)	3 March 1994
Apr	47.2 mm (1.9 in)	3 April 1977
May	67.8 mm (2.7 in)	26 May 1953
Jun	105.7 mm (4.2 in)	23 June 1972
Jul	70.6 mm (2.8 in)	30 July 1974
Aug	109.0 mm (4.3 in)	18 August 1994
Sep	118.6 mm (4.7 in)	18 September 2004
Oct	99.8 mm (3.9 in)	1 October 2010
Nov	92.7 mm (3.6 in)	28 November 1993
Dec	96.5 mm (3.8 in)	1 December 2010

Period of Record Coverage

2008 to 2019

12 years of record at Clarence, 2008 to 2019. 1 years have data for under 90 percent of days and are left out of rankings: 2019.

Days with data per year at Clarence
Year	Days with data	Share of year	Complete
2008	334	91%	Yes
2009	364	100%	Yes
2010	363	99%	Yes
2011	365	100%	Yes
2012	365	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	304	83%	No

Latest Records

Latest records at Clarence
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 September 2019	Clarence, US	daily rain	41.9 mm (1.6 in)	2.5 mm (0.10 in)	62 years	26 of 100 (Routine)
6 August 2019	Clarence, US	daily rain	50.5 mm (2.0 in)	22.1 mm (0.9 in)	10 years	30 of 100 (Routine)
5 July 2019	Clarence, US	daily rain	47.5 mm (1.9 in)	21.3 mm (0.8 in)	44 years	39 of 100 (Notable)
27 May 2019	Clarence, US	daily rain	15.2 mm (0.6 in)	2.2 mm (0.09 in)	9 years	11 of 100 (Routine)
21 February 2019	Clarence, US	daily rain	23.6 mm (0.9 in)	2.5 mm (0.10 in)	8 years	12 of 100 (Routine)
8 February 2019	Clarence, US	daily rain	20.8 mm (0.8 in)	0.5 mm (0.02 in)	60 years	20 of 100 (Routine)
20 January 2019	Clarence, US	daily snowfall	15.2 cm (6.0 in)	2.5 cm (1.0 in)	40 years	24 of 100 (Routine)
1 January 2019	Clarence, US	daily rain	22.6 mm (0.9 in)	6.1 mm (0.24 in)	57 years	20 of 100 (Routine)
16 December 2018	Clarence, US	daily rain	31.8 mm (1.3 in)	5.4 mm (0.21 in)	12 years	16 of 100 (Routine)
16 November 2018	Clarence, US	daily snowfall	24.4 cm (9.6 in)	23.1 cm (9.1 in)	35 years	56 of 100 (Notable)
16 November 2018	Clarence, US	daily rain	37.3 mm (1.5 in)	12.4 mm (0.5 in)	28 years	26 of 100 (Routine)
10 November 2018	Clarence, US	daily rain	24.1 mm (0.9 in)	0.7 mm (0.03 in)	17 years	11 of 100 (Routine)
3 October 2018	Clarence, US	daily rain	52.8 mm (2.1 in)	18.0 mm (0.7 in)	39 years	33 of 100 (Routine)
11 September 2018	Clarence, US	daily rain	72.4 mm (2.9 in)	31.3 mm (1.2 in)	49 years	44 of 100 (Notable)
10 September 2018	Clarence, US	daily rain	55.1 mm (2.2 in)	18.3 mm (0.7 in)	32 years	29 of 100 (Routine)
14 August 2018	Clarence, US	daily rain	32.5 mm (1.3 in)	4.6 mm (0.18 in)	29 years	18 of 100 (Routine)
26 July 2018	Clarence, US	daily rain	26.7 mm (1.1 in)	6.6 mm (0.26 in)	40 years	24 of 100 (Routine)
22 July 2018	Clarence, US	daily rain	54.6 mm (2.1 in)	31.7 mm (1.2 in)	8 years	38 of 100 (Notable)
6 July 2018	Clarence, US	daily rain	19.8 mm (0.8 in)	1.5 mm (0.06 in)	45 years	20 of 100 (Routine)
19 June 2018	Clarence, US	daily rain	37.3 mm (1.5 in)	3.8 mm (0.15 in)	21 years	15 of 100 (Routine)

Climate Trend

10 complete years, 2009 to 2018

One stripe for each of 10 complete years at Clarence, 2009 to 2018. Blue stripes are years cooler than the station's own mean of 8.1 C (46.5 F); red stripes are warmer. The coolest year was 2014, at 6.7 C (44.1 F), and the warmest was 2012, at 9.3 C (48.7 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Clarence as warming stripes, 2009 to 2018
Year	Annual mean temperature	Difference from the station mean
2009	7.1 C	-0.93 C
2010	7.7 C	-0.39 C
2011	8.8 C	+0.75 C
2012	9.3 C	+1.21 C
2013	7.6 C	-0.44 C
2014	6.7 C	-1.33 C
2015	7.8 C	-0.25 C
2016	8.7 C	+0.64 C
2017	8.5 C	+0.47 C
2018	8.4 C	+0.29 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

1950 to 2019

Yearly extremes at Clarence: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	2011	33.1 C (91.5 F)	12
Coldest night (TNn)	-33.9 C (-29.0 F)	2009	-25.0 C (-13.0 F)	12
Wettest day (Rx1day)	118.6 mm (4.7 in)	2004	54.5 mm (2.1 in)	70
Wettest five days (Rx5day)	193.6 mm (7.6 in)	1972	80.2 mm (3.2 in)	70
Longest dry spell (CDD)	37 days	1952	14 days	70

Hottest day (TXx)

The hottest day of the year at Clarence, 1950 to 2019. The record is 38.9 C (102.0 F) in 2011, marked on the chart; the median year is 33.1 C (91.5 F).

Hottest day (TXx) at Clarence by year
Year	Hottest day (TXx)
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
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	32.8 C (91.0 F)
2009	32.8 C (91.0 F)
2010	35.0 C (95.0 F)
2011	38.9 C (102.0 F)
2012	34.4 C (93.9 F)
2013	33.9 C (93.0 F)
2014	32.2 C (90.0 F)
2015	31.7 C (89.1 F)
2016	33.9 C (93.0 F)
2017	32.2 C (90.0 F)
2018	33.3 C (91.9 F)
2019	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Clarence, 1950 to 2019. The record is -33.9 C (-29.0 F) in 2009, marked on the chart; the median year is -25.0 C (-13.0 F).

Coldest night (TNn) at Clarence by year
Year	Coldest night (TNn)
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
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	-21.1 C (-6.0 F)
2009	-33.9 C (-29.0 F)
2010	-25.6 C (-14.1 F)
2011	-24.4 C (-11.9 F)
2012	-18.3 C (-0.9 F)
2013	-23.3 C (-9.9 F)
2014	-31.7 C (-25.1 F)
2015	-31.7 C (-25.1 F)
2016	-24.4 C (-11.9 F)
2017	-21.7 C (-7.1 F)
2018	-27.8 C (-18.0 F)
2019	-26.1 C (-15.0 F)

Wettest day (Rx1day)

The wettest day of the year at Clarence, 1950 to 2019. The record is 118.6 mm (4.7 in) in 2004, marked on the chart; the median year is 54.5 mm (2.1 in).

Wettest day (Rx1day) at Clarence by year
Year	Wettest day (Rx1day)
1950	54.4 mm (2.1 in)
1951	52.6 mm (2.1 in)
1952	61.7 mm (2.4 in)
1953	67.8 mm (2.7 in)
1954	57.4 mm (2.3 in)
1955	65.0 mm (2.6 in)
1956	41.1 mm (1.6 in)
1957	43.9 mm (1.7 in)
1958	55.9 mm (2.2 in)
1959	50.0 mm (2.0 in)
1960	46.2 mm (1.8 in)
1961	31.5 mm (1.2 in)
1962	49.3 mm (1.9 in)
1963	81.3 mm (3.2 in)
1964	50.8 mm (2.0 in)
1965	46.2 mm (1.8 in)
1966	52.1 mm (2.1 in)
1967	77.0 mm (3.0 in)
1968	60.2 mm (2.4 in)
1969	55.6 mm (2.2 in)
1970	54.6 mm (2.1 in)
1971	32.0 mm (1.3 in)
1972	105.7 mm (4.2 in)
1973	42.7 mm (1.7 in)
1974	70.6 mm (2.8 in)
1975	76.5 mm (3.0 in)
1976	61.0 mm (2.4 in)
1977	56.6 mm (2.2 in)
1978	45.7 mm (1.8 in)
1979	59.9 mm (2.4 in)
1980	45.2 mm (1.8 in)
1981	36.3 mm (1.4 in)
1982	49.8 mm (2.0 in)
1983	45.7 mm (1.8 in)
1984	90.2 mm (3.6 in)
1985	40.1 mm (1.6 in)
1986	58.7 mm (2.3 in)
1987	69.9 mm (2.8 in)
1988	47.5 mm (1.9 in)
1989	63.8 mm (2.5 in)
1990	41.9 mm (1.6 in)
1991	38.1 mm (1.5 in)
1992	53.3 mm (2.1 in)
1993	92.7 mm (3.6 in)
1994	109.0 mm (4.3 in)
1995	85.1 mm (3.4 in)
1996	76.7 mm (3.0 in)
1997	55.9 mm (2.2 in)
1998	44.5 mm (1.8 in)
1999	52.3 mm (2.1 in)
2000	46.2 mm (1.8 in)
2001	47.5 mm (1.9 in)
2002	41.7 mm (1.6 in)
2003	57.9 mm (2.3 in)
2004	118.6 mm (4.7 in)
2005	82.0 mm (3.2 in)
2006	79.5 mm (3.1 in)
2007	36.8 mm (1.4 in)
2008	47.0 mm (1.9 in)
2009	67.8 mm (2.7 in)
2010	99.8 mm (3.9 in)
2011	61.5 mm (2.4 in)
2012	54.1 mm (2.1 in)
2013	35.6 mm (1.4 in)
2014	58.2 mm (2.3 in)
2015	69.3 mm (2.7 in)
2016	44.7 mm (1.8 in)
2017	49.0 mm (1.9 in)
2018	72.4 mm (2.9 in)
2019	50.5 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Clarence, 1950 to 2019. The record is 193.6 mm (7.6 in) in 1972, marked on the chart; the median year is 80.2 mm (3.2 in).

Wettest five days (Rx5day) at Clarence by year
Year	Wettest five days (Rx5day)
1950	102.3 mm (4.0 in)
1951	83.3 mm (3.3 in)
1952	101.4 mm (4.0 in)
1953	116.5 mm (4.6 in)
1954	79.7 mm (3.1 in)
1955	100.6 mm (4.0 in)
1956	73.2 mm (2.9 in)
1957	75.0 mm (3.0 in)
1958	69.1 mm (2.7 in)
1959	83.8 mm (3.3 in)
1960	90.6 mm (3.6 in)
1961	61.5 mm (2.4 in)
1962	71.1 mm (2.8 in)
1963	91.5 mm (3.6 in)
1964	73.6 mm (2.9 in)
1965	59.4 mm (2.3 in)
1966	80.5 mm (3.2 in)
1967	91.2 mm (3.6 in)
1968	79.0 mm (3.1 in)
1969	72.2 mm (2.8 in)
1970	75.1 mm (3.0 in)
1971	60.0 mm (2.4 in)
1972	193.6 mm (7.6 in)
1973	65.5 mm (2.6 in)
1974	78.3 mm (3.1 in)
1975	152.2 mm (6.0 in)
1976	120.0 mm (4.7 in)
1977	59.9 mm (2.4 in)
1978	106.6 mm (4.2 in)
1979	89.6 mm (3.5 in)
1980	62.2 mm (2.4 in)
1981	72.9 mm (2.9 in)
1982	75.7 mm (3.0 in)
1983	59.1 mm (2.3 in)
1984	113.8 mm (4.5 in)
1985	63.6 mm (2.5 in)
1986	101.9 mm (4.0 in)
1987	81.3 mm (3.2 in)
1988	76.8 mm (3.0 in)
1989	97.8 mm (3.9 in)
1990	70.9 mm (2.8 in)
1991	50.9 mm (2.0 in)
1992	64.8 mm (2.6 in)
1993	95.5 mm (3.8 in)
1994	134.9 mm (5.3 in)
1995	92.0 mm (3.6 in)
1996	97.8 mm (3.9 in)
1997	71.1 mm (2.8 in)
1998	71.9 mm (2.8 in)
1999	82.0 mm (3.2 in)
2000	79.4 mm (3.1 in)
2001	65.8 mm (2.6 in)
2002	79.3 mm (3.1 in)
2003	79.9 mm (3.1 in)
2004	128.2 mm (5.0 in)
2005	96.0 mm (3.8 in)
2006	122.6 mm (4.8 in)
2007	57.6 mm (2.3 in)
2008	80.7 mm (3.2 in)
2009	93.1 mm (3.7 in)
2010	133.3 mm (5.2 in)
2011	147.3 mm (5.8 in)
2012	79.2 mm (3.1 in)
2013	73.5 mm (2.9 in)
2014	68.8 mm (2.7 in)
2015	85.3 mm (3.4 in)
2016	82.8 mm (3.3 in)
2017	77.1 mm (3.0 in)
2018	160.5 mm (6.3 in)
2019	94.0 mm (3.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Clarence, 1950 to 2019. The record is 37 days in 1952, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Clarence by year
Year	Longest dry spell (CDD)
1950	10 days
1951	15 days
1952	37 days
1953	21 days
1954	14 days
1955	16 days
1956	13 days
1957	14 days
1958	13 days
1959	13 days
1960	13 days
1961	17 days
1962	18 days
1963	27 days
1964	19 days
1965	13 days
1966	18 days
1967	17 days
1968	19 days
1969	17 days
1970	15 days
1971	13 days
1972	11 days
1973	15 days
1974	14 days
1975	11 days
1976	17 days
1977	11 days
1978	12 days
1979	10 days
1980	11 days
1981	15 days
1982	16 days
1983	22 days
1984	14 days
1985	14 days
1986	14 days
1987	11 days
1988	22 days
1989	12 days
1990	11 days
1991	25 days
1992	18 days
1993	14 days
1994	12 days
1995	31 days
1996	11 days
1997	19 days
1998	10 days
1999	17 days
2000	11 days
2001	19 days
2002	13 days
2003	14 days
2004	16 days
2005	16 days
2006	17 days
2007	14 days
2008	16 days
2009	21 days
2010	18 days
2011	15 days
2012	10 days
2013	11 days
2014	18 days
2015	11 days
2016	10 days
2017	15 days
2018	8 days
2019	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.

Rainfall Return Levels

67 years, 1951 to 2018

A day with at least 55.1 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 127.6 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Clarence: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	55.1 mm (2.2 in)
5 years	71.7 mm (2.8 in)
10 years	83.8 mm (3.3 in)
25 years	100.3 mm (3.9 in)
50 years	113.5 mm (4.5 in)
100 years	127.6 mm (5.0 in)	Longer than the 67 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, 67 years of values from 1951 to 2018.

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: 118.6 mm (4.7 in) in 2004; 109.0 mm (4.3 in) in 1994; 105.7 mm (4.2 in) in 1972.

Download the Data

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