Boswell Weather Records (USC00360821)

Record envelope, standing records and threshold days for Boswell (USC00360821), Pennsylvania, United States, with 56 years of record.

Key Facts for Boswell

Boswell (USC00360821) is a weather station in Pennsylvania, United States at 40.16 latitude and -79.03 longitude, 571 m (1,872 ft) above sea level.
The station reports from 1960 to 2015, 56 years of record.
2 records set at Boswell still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Boswell set a daily record precipitation of 24.1 mm (0.9 in) on 20 April 2015.

About the Station

Location: Pennsylvania, United States, 40.16 latitude, -79.03 longitude.
Elevation: 571 m (1,872 ft).
Period of record: 1960 to 2015, 56 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 Boswell. 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 Boswell, 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	-17.8 C (0.0 F)	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	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

2 standing records

2 records at Boswell still stand. 1969 holds the most, with 2.

All-Time Record Progression

4 new records

4 all-time records were set at Boswell between 26 January 2004 and 12 February 2010. Each dot is a new record.

When Boswell set new all-time records
Date	Kind	Detail
2004-01-26	Record daily precipitation	Record daily precipitation 139.7 mm (5.5 in)
2010-02-06	Record daily snowfall	Record daily snowfall 61.0 cm (24.0 in)
2010-02-11	Record snow depth	Record snow depth 91.4 cm (36.0 in)
2010-02-12	Record snow depth	Record snow depth 96.5 cm (38.0 in)

Wettest Day of Each Month

Jan: 139.7 mm (5.5 in)

The wettest day on record for each calendar month at Boswell. The most was 139.7 mm (5.5 in) on 26 January 2004.

Record daily precipitation for each month at Boswell
Month	Record daily precipitation (mm)	Date
Jan	139.7 mm (5.5 in)	26 January 2004
Feb	72.4 mm (2.9 in)	6 February 2010
Mar	58.7 mm (2.3 in)	5 March 1963
Apr	55.4 mm (2.2 in)	21 April 1964
May	67.3 mm (2.6 in)	16 May 2014
Jun	54.4 mm (2.1 in)	30 June 1984
Jul	53.6 mm (2.1 in)	21 July 1988
Aug	77.5 mm (3.1 in)	28 August 2013
Sep	66.8 mm (2.6 in)	7 September 2011
Oct	109.2 mm (4.3 in)	30 October 2012
Nov	57.2 mm (2.3 in)	8 November 1997
Dec	60.7 mm (2.4 in)	20 December 2008

Period of Record Coverage

1969 to 1969

1 years of record at Boswell, 1969 to 1969. 1 years have data for under 90 percent of days and are left out of rankings: 1969.

Latest Records

Latest records at Boswell
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 2015	Boswell, US	daily rain	24.1 mm (0.9 in)	0.5 mm (0.02 in)	16 years	10 of 100 (Routine)
11 April 2015	Boswell, US	daily rain	25.4 mm (1.0 in)	16.3 mm (0.6 in)	12 years	26 of 100 (Routine)
4 March 2015	Boswell, US	daily rain	43.2 mm (1.7 in)	21.4 mm (0.8 in)	37 years	43 of 100 (Notable)
2 March 2015	Boswell, US	daily snowfall	8.9 cm (3.5 in)	0.3 cm (0.1 in)	9 years	7 of 100 (Routine)
17 December 2014	Boswell, US	daily rain	16.5 mm (0.6 in)	5.3 mm (0.21 in)	5 years	13 of 100 (Routine)
28 November 2014	Boswell, US	daily snow depth (Tie)	10.2 cm (4.0 in)	tie	36 years	4 of 100 (Routine)
27 November 2014	Boswell, US	daily snow depth	15.2 cm (6.0 in)	5.0 cm (2.0 in)	43 years	27 of 100 (Routine)
27 November 2014	Boswell, US	daily snowfall	15.0 cm (5.9 in)	5.9 cm (2.3 in)	12 years	22 of 100 (Routine)
14 November 2014	Boswell, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	53 years	20 of 100 (Routine)
15 October 2014	Boswell, US	daily rain	24.1 mm (0.9 in)	6.3 mm (0.25 in)	12 years	14 of 100 (Routine)
28 June 2014	Boswell, US	daily rain	35.6 mm (1.4 in)	8.9 mm (0.35 in)	24 years	21 of 100 (Routine)
9 June 2014	Boswell, US	daily rain	27.9 mm (1.1 in)	3.3 mm (0.13 in)	27 years	16 of 100 (Routine)
16 May 2014	Boswell, US	monthly rain	67.3 mm (2.6 in)	10.4 mm (0.4 in)	43 years	38 of 100 (Notable)
19 February 2014	Boswell, US	daily snow depth	55.9 cm (22.0 in)	2.6 cm (1.0 in)	35 years	16 of 100 (Routine)
3 February 2014	Boswell, US	daily snowfall	10.2 cm (4.0 in)	0.5 cm (0.2 in)	10 years	8 of 100 (Routine)
30 December 2013	Boswell, US	daily rain	20.8 mm (0.8 in)	7.6 mm (0.30 in)	16 years	19 of 100 (Routine)
18 December 2013	Boswell, US	daily snow depth (Tie)	20.3 cm (8.0 in)	tie	40 years	4 of 100 (Routine)
17 December 2013	Boswell, US	daily snow depth (Tie)	20.3 cm (8.0 in)	tie	10 years	2 of 100 (Routine)
7 December 2013	Boswell, US	daily rain	39.4 mm (1.6 in)	9.7 mm (0.38 in)	51 years	33 of 100 (Routine)
29 August 2013	Boswell, US	daily rain	57.2 mm (2.3 in)	17.6 mm (0.7 in)	4 years	23 of 100 (Routine)

Extremes by Year

1960 to 2015

Yearly extremes at Boswell: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	-17.8 C (0.0 F)	1969	-17.8 C (0.0 F)	1
Wettest day (Rx1day)	139.7 mm (5.5 in)	2004	47.8 mm (1.9 in)	52
Wettest five days (Rx5day)	163.3 mm (6.4 in)	2004	78.4 mm (3.1 in)	52
Longest dry spell (CDD)	31 days	1988	15 days	52

Hottest day (TXx)

The hottest day of the year at Boswell, 1960 to 2015. The record is -17.8 C (0.0 F) in 1969, marked on the chart; the median year is -17.8 C (0.0 F).

Hottest day (TXx) at Boswell by year
Year	Hottest day (TXx)
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	-17.8 C (0.0 F)
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
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	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a

Wettest day (Rx1day)

The wettest day of the year at Boswell, 1960 to 2015. The record is 139.7 mm (5.5 in) in 2004, marked on the chart; the median year is 47.8 mm (1.9 in).

Wettest day (Rx1day) at Boswell by year
Year	Wettest day (Rx1day)
1960	39.9 mm (1.6 in)
1961	42.4 mm (1.7 in)
1962	48.0 mm (1.9 in)
1963	58.7 mm (2.3 in)
1964	55.4 mm (2.2 in)
1965	51.6 mm (2.0 in)
1966	45.7 mm (1.8 in)
1967	37.3 mm (1.5 in)
1968	34.8 mm (1.4 in)
1969	36.8 mm (1.4 in)
1970	42.2 mm (1.7 in)
1971	56.9 mm (2.2 in)
1972	49.5 mm (1.9 in)
1973	50.8 mm (2.0 in)
1974	43.7 mm (1.7 in)
1975	34.0 mm (1.3 in)
1976	51.6 mm (2.0 in)
1977	52.1 mm (2.1 in)
1978	31.0 mm (1.2 in)
1979	51.8 mm (2.0 in)
1980	49.0 mm (1.9 in)
1981	39.6 mm (1.6 in)
1982	55.1 mm (2.2 in)
1983	32.8 mm (1.3 in)
1984	54.4 mm (2.1 in)
1985	37.3 mm (1.5 in)
1986	41.1 mm (1.6 in)
1987	45.5 mm (1.8 in)
1988	53.6 mm (2.1 in)
1989	40.9 mm (1.6 in)
1990	47.5 mm (1.9 in)
1991	24.1 mm (0.9 in)
1996	29.2 mm (1.1 in)
1997	57.2 mm (2.3 in)
1998	51.1 mm (2.0 in)
1999	33.0 mm (1.3 in)
2000	49.8 mm (2.0 in)
2001	33.8 mm (1.3 in)
2002	44.7 mm (1.8 in)
2003	47.0 mm (1.9 in)
2004	139.7 mm (5.5 in)
2005	51.3 mm (2.0 in)
2006	36.8 mm (1.4 in)
2007	56.1 mm (2.2 in)
2008	60.7 mm (2.4 in)
2009	46.2 mm (1.8 in)
2010	72.4 mm (2.9 in)
2011	66.8 mm (2.6 in)
2012	109.2 mm (4.3 in)
2013	77.5 mm (3.1 in)
2014	67.3 mm (2.6 in)
2015	43.2 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Boswell, 1960 to 2015. The record is 163.3 mm (6.4 in) in 2004, marked on the chart; the median year is 78.4 mm (3.1 in).

Wettest five days (Rx5day) at Boswell by year
Year	Wettest five days (Rx5day)
1960	63.0 mm (2.5 in)
1961	58.1 mm (2.3 in)
1962	95.3 mm (3.8 in)
1963	82.1 mm (3.2 in)
1964	75.9 mm (3.0 in)
1965	63.1 mm (2.5 in)
1966	54.8 mm (2.2 in)
1967	76.7 mm (3.0 in)
1968	54.8 mm (2.2 in)
1969	57.6 mm (2.3 in)
1970	102.3 mm (4.0 in)
1971	90.2 mm (3.6 in)
1972	112.7 mm (4.4 in)
1973	69.3 mm (2.7 in)
1974	83.1 mm (3.3 in)
1975	77.2 mm (3.0 in)
1976	89.7 mm (3.5 in)
1977	78.0 mm (3.1 in)
1978	98.1 mm (3.9 in)
1979	105.6 mm (4.2 in)
1980	84.1 mm (3.3 in)
1981	78.7 mm (3.1 in)
1982	69.1 mm (2.7 in)
1983	77.5 mm (3.1 in)
1984	91.2 mm (3.6 in)
1985	85.0 mm (3.3 in)
1986	80.2 mm (3.2 in)
1987	59.7 mm (2.4 in)
1988	100.1 mm (3.9 in)
1989	72.4 mm (2.9 in)
1990	99.9 mm (3.9 in)
1991	47.4 mm (1.9 in)
1996	39.6 mm (1.6 in)
1997	109.7 mm (4.3 in)
1998	61.8 mm (2.4 in)
1999	45.8 mm (1.8 in)
2000	79.6 mm (3.1 in)
2001	63.5 mm (2.5 in)
2002	69.3 mm (2.7 in)
2003	67.1 mm (2.6 in)
2004	163.3 mm (6.4 in)
2005	90.2 mm (3.6 in)
2006	62.5 mm (2.5 in)
2007	117.6 mm (4.6 in)
2008	83.1 mm (3.3 in)
2009	63.4 mm (2.5 in)
2010	85.6 mm (3.4 in)
2011	54.3 mm (2.1 in)
2012	134.9 mm (5.3 in)
2013	145.8 mm (5.7 in)
2014	79.2 mm (3.1 in)
2015	66.4 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Boswell, 1960 to 2015. The record is 31 days in 1988, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Boswell by year
Year	Longest dry spell (CDD)
1960	13 days
1961	11 days
1962	13 days
1963	23 days
1964	27 days
1965	15 days
1966	16 days
1967	21 days
1968	30 days
1969	13 days
1970	15 days
1971	15 days
1972	14 days
1973	15 days
1974	19 days
1975	11 days
1976	17 days
1977	14 days
1978	16 days
1979	11 days
1980	12 days
1981	21 days
1982	28 days
1983	15 days
1984	20 days
1985	15 days
1986	21 days
1987	12 days
1988	31 days
1989	11 days
1990	14 days
1991	14 days
1996	8 days
1997	23 days
1998	11 days
1999	17 days
2000	22 days
2001	18 days
2002	20 days
2003	14 days
2004	15 days
2005	25 days
2006	13 days
2007	11 days
2008	15 days
2009	14 days
2010	11 days
2011	2 days
2012	12 days
2013	11 days
2014	9 days
2015	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

44 years, 1961 to 2014

A day with at least 47.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 123.1 mm (4.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Boswell: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	47.2 mm (1.9 in)
5 years	60.5 mm (2.4 in)
10 years	71.7 mm (2.8 in)
25 years	89.0 mm (3.5 in)
50 years	104.6 mm (4.1 in)	Longer than the 44 years of record
100 years	123.1 mm (4.8 in)	Longer than the 44 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, 44 years of values from 1961 to 2014.

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: 139.7 mm (5.5 in) in 2004; 109.2 mm (4.3 in) in 2012; 77.5 mm (3.1 in) in 2013.

Download the Data

Data for Boswell standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Boswell 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 2026-10-13 (13 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).