Portageville 1N Weather Records (USC00306745)

Record envelope, standing records and threshold days for Portageville 1N (USC00306745), New York, United States, with 125 years of record.

Key Facts for Portageville 1N

Portageville 1N (USC00306745) is a weather station in New York, United States at 42.59 latitude and -78.03 longitude, 362 m (1,188 ft) above sea level.
The station reports from 1898 to 2022, 125 years of record.
1,464 records set at Portageville 1N still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Portageville 1N set a daily record snowfall of 23.6 cm (9.3 in) on 4 February 2022.

About the Station

Location: New York, United States, 42.59 latitude, -78.03 longitude.
Elevation: 362 m (1,188 ft).
Period of record: 1898 to 2022, 125 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 Portageville 1N. 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 Portageville 1N, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.6 C (69.1 F)	-31.7 C (-25.1 F)	n/a	n/a
Feb	23.9 C (75.0 F)	-29.4 C (-20.9 F)	n/a	n/a
Mar	28.9 C (84.0 F)	-25.6 C (-14.1 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-12.2 C (10.0 F)	n/a	n/a
May	36.7 C (98.1 F)	-5.6 C (21.9 F)	n/a	n/a
Jun	34.4 C (93.9 F)	-1.7 C (28.9 F)	n/a	n/a
Jul	37.8 C (100.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	35.6 C (96.1 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	25.6 C (78.1 F)	-18.9 C (-2.0 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-27.8 C (-18.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Portageville 1N still stand. 1911 holds the most, with 88.

Standing records at Portageville 1N by the year they were set
Year set	Standing records
1898	75
1899	87
1900	50
1901	24
1902	52
1903	64
1904	41
1905	74
1906	82
1907	57
1908	85
1909	64
1910	65
1911	88
1912	78
1913	78
1914	75
1915	46
1916	61
1917	64
1918	75
1919	49
1920	25
2015	5

Wettest Day of Each Month

Jun: 108.0 mm (4.3 in)

The wettest day on record for each calendar month at Portageville 1N. The most was 108.0 mm (4.3 in) on 14 June 1908.

Record daily precipitation for each month at Portageville 1N
Month	Record daily precipitation (mm)	Date
Jan	55.1 mm (2.2 in)	22 January 1902
Feb	49.5 mm (1.9 in)	26 February 1961
Mar	63.5 mm (2.5 in)	25 March 1913
Apr	58.4 mm (2.3 in)	3 April 1901
May	64.3 mm (2.5 in)	16 May 1916
Jun	108.0 mm (4.3 in)	14 June 1908
Jul	64.0 mm (2.5 in)	1 July 1995
Aug	69.3 mm (2.7 in)	31 August 2005
Sep	88.9 mm (3.5 in)	29 September 1967
Oct	86.4 mm (3.4 in)	1 October 1959
Nov	40.6 mm (1.6 in)	1 November 1994
Dec	47.2 mm (1.9 in)	2 December 2010

Period of Record Coverage

1898 to 2015

24 years of record at Portageville 1N, 1898 to 2015. 9 years have data for under 90 percent of days and are left out of rankings: 1899, 1900, 1901, 1902, 1903, 1904, 1919, 1920 and others.

Days with data per year at Portageville 1N
Year	Days with data	Share of year	Complete
1898	334	92%	Yes
1899	328	90%	No
1900	240	66%	No
1901	175	48%	No
1902	258	71%	No
1903	297	81%	No
1904	233	64%	No
1905	365	100%	Yes
1906	355	97%	Yes
1907	342	94%	Yes
1908	346	95%	Yes
1909	354	97%	Yes
1910	362	99%	Yes
1911	362	99%	Yes
1912	362	99%	Yes
1913	360	99%	Yes
1914	360	99%	Yes
1915	357	98%	Yes
1916	362	99%	Yes
1917	363	99%	Yes
1918	350	96%	Yes
1919	286	78%	No
1920	85	23%	No
2015	4	1%	No

Latest Records

Latest records at Portageville 1N
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 February 2022	Portageville 1N, US	daily snowfall	23.6 cm (9.3 in)	8.4 cm (3.3 in)	104 years	56 of 100 (Notable)
24 January 2022	Portageville 1N, US	daily snowfall	8.9 cm (3.5 in)	1.3 cm (0.5 in)	46 years	25 of 100 (Routine)
17 January 2022	Portageville 1N, US	daily snowfall	36.1 cm (14.2 in)	19.8 cm (7.8 in)	24 years	57 of 100 (Notable)
24 December 2021	Portageville 1N, US	daily rain	15.2 mm (0.6 in)	1.2 mm (0.05 in)	14 years	16 of 100 (Routine)
20 June 2019	Portageville 1N, US	daily rain	61.2 mm (2.4 in)	39.6 mm (1.6 in)	44 years	62 of 100 (Major)
15 April 2019	Portageville 1N, US	daily rain	22.4 mm (0.9 in)	5.9 mm (0.23 in)	98 years	20 of 100 (Routine)
27 February 2019	Portageville 1N, US	daily snowfall	12.2 cm (4.8 in)	0.8 cm (0.3 in)	11 years	14 of 100 (Routine)
16 November 2018	Portageville 1N, US	daily snowfall	21.1 cm (8.3 in)	7.4 cm (2.9 in)	23 years	31 of 100 (Routine)
11 November 2018	Portageville 1N, US	daily snowfall	11.4 cm (4.5 in)	6.3 cm (2.5 in)	41 years	34 of 100 (Routine)
11 November 2018	Portageville 1N, US	daily snow depth	10.2 cm (4.0 in)	2.6 cm (1.0 in)	41 years	25 of 100 (Routine)
28 October 2018	Portageville 1N, US	daily rain	36.6 mm (1.4 in)	12.5 mm (0.5 in)	12 years	28 of 100 (Routine)
5 October 2018	Portageville 1N, US	daily rain	25.4 mm (1.0 in)	5.1 mm (0.20 in)	12 years	19 of 100 (Routine)
10 September 2018	Portageville 1N, US	daily rain	45.7 mm (1.8 in)	15.2 mm (0.6 in)	51 years	40 of 100 (Notable)
30 August 2018	Portageville 1N, US	daily rain	18.3 mm (0.7 in)	4.6 mm (0.18 in)	28 years	20 of 100 (Routine)
24 July 2018	Portageville 1N, US	daily rain	17.8 mm (0.7 in)	1.5 mm (0.06 in)	28 years	19 of 100 (Routine)
17 July 2018	Portageville 1N, US	daily rain	33.0 mm (1.3 in)	15.2 mm (0.6 in)	29 years	34 of 100 (Routine)
16 April 2018	Portageville 1N, US	daily rain	23.1 mm (0.9 in)	10.1 mm (0.4 in)	32 years	20 of 100 (Routine)
16 March 2018	Portageville 1N, US	daily snowfall	7.6 cm (3.0 in)	1.2 cm (0.5 in)	44 years	24 of 100 (Routine)
2 March 2018	Portageville 1N, US	daily snowfall	33.5 cm (13.2 in)	23.3 cm (9.2 in)	104 years	75 of 100 (Major)
2 March 2018	Portageville 1N, US	daily rain	37.3 mm (1.5 in)	17.0 mm (0.7 in)	41 years	48 of 100 (Notable)

Climate Trend

14 complete years, 1905 to 1918

One stripe for each of 14 complete years at Portageville 1N, 1905 to 1918. Blue stripes are years cooler than the station's own mean of 8.2 C (46.7 F); red stripes are warmer. The coolest year was 1917, at 5.9 C (42.6 F), and the warmest was 1913, at 9.6 C (49.2 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Portageville 1N as warming stripes, 1905 to 1918
Year	Annual mean temperature	Difference from the station mean
1905	7.4 C	-0.82 C
1906	8.2 C	+0.05 C
1907	8.1 C	-0.04 C
1908	9.5 C	+1.37 C
1909	9.0 C	+0.84 C
1910	9.0 C	+0.78 C
1911	9.4 C	+1.26 C
1912	7.9 C	-0.32 C
1913	9.6 C	+1.38 C
1914	7.4 C	-0.82 C
1915	7.6 C	-0.53 C
1916	7.7 C	-0.49 C
1917	5.9 C	-2.30 C
1918	7.8 C	-0.38 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

1898 to 2022

Yearly extremes at Portageville 1N: 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)	1899	33.6 C (92.5 F)	24
Coldest night (TNn)	-31.7 C (-25.1 F)	1904	-26.4 C (-15.5 F)	24
Wettest day (Rx1day)	108.0 mm (4.3 in)	1908	45.7 mm (1.8 in)	89
Wettest five days (Rx5day)	159.3 mm (6.3 in)	1972	72.3 mm (2.8 in)	89
Longest dry spell (CDD)	40 days	1908	14 days	89

Hottest day (TXx)

The hottest day of the year at Portageville 1N, 1898 to 2022. The record is 37.8 C (100.0 F) in 1899, marked on the chart; the median year is 33.6 C (92.5 F).

Hottest day (TXx) at Portageville 1N by year
Year	Hottest day (TXx)
1898	35.6 C (96.1 F)
1899	37.8 C (100.0 F)
1900	33.9 C (93.0 F)
1901	28.3 C (82.9 F)
1902	32.2 C (90.0 F)
1903	34.4 C (93.9 F)
1904	32.8 C (91.0 F)
1905	33.3 C (91.9 F)
1906	33.3 C (91.9 F)
1907	33.3 C (91.9 F)
1908	34.4 C (93.9 F)
1909	35.6 C (96.1 F)
1910	35.0 C (95.0 F)
1911	37.8 C (100.0 F)
1912	36.1 C (97.0 F)
1913	35.6 C (96.1 F)
1914	35.0 C (95.0 F)
1915	31.1 C (88.0 F)
1916	33.3 C (91.9 F)
1917	32.2 C (90.0 F)
1918	35.6 C (96.1 F)
1919	32.2 C (90.0 F)
1920	23.9 C (75.0 F)
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	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	32.2 C (90.0 F)
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2021	n/a
2022	n/a

Coldest night (TNn)

The coldest night of the year at Portageville 1N, 1898 to 2022. The record is -31.7 C (-25.1 F) in 1904, marked on the chart; the median year is -26.4 C (-15.5 F).

Coldest night (TNn) at Portageville 1N by year
Year	Coldest night (TNn)
1898	-22.2 C (-8.0 F)
1899	-27.2 C (-17.0 F)
1900	-21.1 C (-6.0 F)
1901	-21.1 C (-6.0 F)
1902	-22.2 C (-8.0 F)
1903	-22.2 C (-8.0 F)
1904	-31.7 C (-25.1 F)
1905	-28.3 C (-18.9 F)
1906	-24.4 C (-11.9 F)
1907	-29.4 C (-20.9 F)
1908	-28.9 C (-20.0 F)
1909	-25.0 C (-13.0 F)
1910	-23.9 C (-11.0 F)
1911	-22.2 C (-8.0 F)
1912	-28.9 C (-20.0 F)
1913	-23.9 C (-11.0 F)
1914	-31.1 C (-24.0 F)
1915	-19.4 C (-2.9 F)
1916	-29.4 C (-20.9 F)
1917	-25.6 C (-14.1 F)
1918	-27.8 C (-18.0 F)
1919	-27.8 C (-18.0 F)
1920	-28.3 C (-18.9 F)
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	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	-28.9 C (-20.0 F)
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2021	n/a
2022	n/a

Wettest day (Rx1day)

The wettest day of the year at Portageville 1N, 1898 to 2022. The record is 108.0 mm (4.3 in) in 1908, marked on the chart; the median year is 45.7 mm (1.8 in).

Wettest day (Rx1day) at Portageville 1N by year
Year	Wettest day (Rx1day)
1898	55.4 mm (2.2 in)
1899	44.5 mm (1.8 in)
1900	55.9 mm (2.2 in)
1901	58.4 mm (2.3 in)
1902	55.1 mm (2.2 in)
1903	50.8 mm (2.0 in)
1904	29.7 mm (1.2 in)
1905	33.0 mm (1.3 in)
1906	52.1 mm (2.1 in)
1907	38.1 mm (1.5 in)
1908	108.0 mm (4.3 in)
1909	33.8 mm (1.3 in)
1910	32.5 mm (1.3 in)
1911	51.3 mm (2.0 in)
1912	33.3 mm (1.3 in)
1913	63.5 mm (2.5 in)
1914	56.9 mm (2.2 in)
1915	45.7 mm (1.8 in)
1916	64.3 mm (2.5 in)
1917	50.8 mm (2.0 in)
1918	31.2 mm (1.2 in)
1919	45.7 mm (1.8 in)
1920	16.5 mm (0.6 in)
1956	41.9 mm (1.6 in)
1957	45.7 mm (1.8 in)
1958	26.7 mm (1.1 in)
1959	86.4 mm (3.4 in)
1960	41.9 mm (1.6 in)
1961	49.5 mm (1.9 in)
1962	50.8 mm (2.0 in)
1963	35.6 mm (1.4 in)
1964	26.7 mm (1.1 in)
1965	27.2 mm (1.1 in)
1966	51.6 mm (2.0 in)
1967	88.9 mm (3.5 in)
1968	54.6 mm (2.1 in)
1969	41.9 mm (1.6 in)
1970	55.9 mm (2.2 in)
1971	38.9 mm (1.5 in)
1972	61.0 mm (2.4 in)
1973	71.1 mm (2.8 in)
1974	36.8 mm (1.4 in)
1975	38.1 mm (1.5 in)
1976	47.0 mm (1.9 in)
1977	57.7 mm (2.3 in)
1978	31.2 mm (1.2 in)
1979	35.3 mm (1.4 in)
1980	58.7 mm (2.3 in)
1981	55.6 mm (2.2 in)
1982	56.9 mm (2.2 in)
1983	55.9 mm (2.2 in)
1984	65.8 mm (2.6 in)
1985	31.2 mm (1.2 in)
1986	33.8 mm (1.3 in)
1987	33.0 mm (1.3 in)
1988	25.7 mm (1.0 in)
1989	67.3 mm (2.6 in)
1990	44.2 mm (1.7 in)
1991	44.7 mm (1.8 in)
1992	48.5 mm (1.9 in)
1993	40.4 mm (1.6 in)
1994	40.6 mm (1.6 in)
1995	69.9 mm (2.8 in)
1996	40.6 mm (1.6 in)
1997	39.9 mm (1.6 in)
1998	55.1 mm (2.2 in)
1999	39.9 mm (1.6 in)
2000	32.3 mm (1.3 in)
2001	32.0 mm (1.3 in)
2002	49.5 mm (1.9 in)
2003	35.6 mm (1.4 in)
2004	70.9 mm (2.8 in)
2005	69.3 mm (2.7 in)
2006	66.0 mm (2.6 in)
2007	36.8 mm (1.4 in)
2008	75.7 mm (3.0 in)
2009	41.1 mm (1.6 in)
2010	47.2 mm (1.9 in)
2011	38.9 mm (1.5 in)
2012	38.4 mm (1.5 in)
2013	31.2 mm (1.2 in)
2014	33.0 mm (1.3 in)
2015	51.1 mm (2.0 in)
2016	51.6 mm (2.0 in)
2017	59.7 mm (2.4 in)
2018	45.7 mm (1.8 in)
2019	61.2 mm (2.4 in)
2021	15.2 mm (0.6 in)
2022	11.2 mm (0.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Portageville 1N, 1898 to 2022. The record is 159.3 mm (6.3 in) in 1972, marked on the chart; the median year is 72.3 mm (2.8 in).

Wettest five days (Rx5day) at Portageville 1N by year
Year	Wettest five days (Rx5day)
1898	76.0 mm (3.0 in)
1899	46.7 mm (1.8 in)
1900	71.1 mm (2.8 in)
1901	77.5 mm (3.1 in)
1902	109.2 mm (4.3 in)
1903	73.7 mm (2.9 in)
1904	41.0 mm (1.6 in)
1905	62.0 mm (2.4 in)
1906	62.3 mm (2.5 in)
1907	40.7 mm (1.6 in)
1908	108.0 mm (4.3 in)
1909	50.6 mm (2.0 in)
1910	70.3 mm (2.8 in)
1911	84.7 mm (3.3 in)
1912	57.1 mm (2.2 in)
1913	118.1 mm (4.6 in)
1914	100.1 mm (3.9 in)
1915	61.8 mm (2.4 in)
1916	105.8 mm (4.2 in)
1917	80.1 mm (3.2 in)
1918	53.4 mm (2.1 in)
1919	91.2 mm (3.6 in)
1920	17.2 mm (0.7 in)
1956	59.4 mm (2.3 in)
1957	89.7 mm (3.5 in)
1958	53.6 mm (2.1 in)
1959	104.9 mm (4.1 in)
1960	92.7 mm (3.6 in)
1961	79.0 mm (3.1 in)
1962	97.3 mm (3.8 in)
1963	50.8 mm (2.0 in)
1964	52.6 mm (2.1 in)
1965	36.8 mm (1.4 in)
1966	61.8 mm (2.4 in)
1967	123.2 mm (4.9 in)
1968	71.4 mm (2.8 in)
1969	91.9 mm (3.6 in)
1970	66.6 mm (2.6 in)
1971	54.6 mm (2.1 in)
1972	159.3 mm (6.3 in)
1973	78.0 mm (3.1 in)
1974	77.4 mm (3.0 in)
1975	55.8 mm (2.2 in)
1976	91.4 mm (3.6 in)
1977	96.7 mm (3.8 in)
1978	51.8 mm (2.0 in)
1979	57.2 mm (2.3 in)
1980	69.6 mm (2.7 in)
1981	75.4 mm (3.0 in)
1982	68.9 mm (2.7 in)
1983	59.2 mm (2.3 in)
1984	90.2 mm (3.6 in)
1985	47.6 mm (1.9 in)
1986	74.5 mm (2.9 in)
1987	53.3 mm (2.1 in)
1988	68.7 mm (2.7 in)
1989	99.6 mm (3.9 in)
1990	93.9 mm (3.7 in)
1991	51.8 mm (2.0 in)
1992	84.8 mm (3.3 in)
1993	47.5 mm (1.9 in)
1994	80.7 mm (3.2 in)
1995	99.8 mm (3.9 in)
1996	87.6 mm (3.4 in)
1997	62.6 mm (2.5 in)
1998	93.8 mm (3.7 in)
1999	56.9 mm (2.2 in)
2000	55.7 mm (2.2 in)
2001	50.0 mm (2.0 in)
2002	58.2 mm (2.3 in)
2003	82.5 mm (3.2 in)
2004	82.8 mm (3.3 in)
2005	108.4 mm (4.3 in)
2006	85.3 mm (3.4 in)
2007	59.2 mm (2.3 in)
2008	111.3 mm (4.4 in)
2009	72.3 mm (2.8 in)
2010	82.8 mm (3.3 in)
2011	59.2 mm (2.3 in)
2012	59.8 mm (2.4 in)
2013	58.4 mm (2.3 in)
2014	52.7 mm (2.1 in)
2015	79.3 mm (3.1 in)
2016	83.6 mm (3.3 in)
2017	100.3 mm (3.9 in)
2018	84.1 mm (3.3 in)
2019	102.6 mm (4.0 in)
2021	15.3 mm (0.6 in)
2022	5.1 mm (0.20 in)

Longest dry spell (CDD)

The longest dry spell of the year at Portageville 1N, 1898 to 2022. The record is 40 days in 1908, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Portageville 1N by year
Year	Longest dry spell (CDD)
1898	13 days
1899	10 days
1900	10 days
1901	10 days
1902	15 days
1903	15 days
1904	26 days
1905	18 days
1906	10 days
1907	20 days
1908	40 days
1909	22 days
1910	19 days
1911	12 days
1912	22 days
1913	21 days
1914	17 days
1915	15 days
1916	12 days
1917	20 days
1918	21 days
1919	19 days
1920	12 days
1956	14 days
1957	26 days
1958	10 days
1959	16 days
1960	13 days
1961	18 days
1962	14 days
1963	23 days
1964	9 days
1965	12 days
1966	16 days
1967	15 days
1968	16 days
1969	18 days
1970	16 days
1971	11 days
1972	9 days
1973	9 days
1974	10 days
1975	12 days
1976	13 days
1977	15 days
1978	16 days
1979	11 days
1980	15 days
1981	9 days
1982	10 days
1983	16 days
1984	15 days
1985	14 days
1986	15 days
1987	21 days
1988	12 days
1989	14 days
1990	12 days
1991	13 days
1992	14 days
1993	10 days
1994	12 days
1995	18 days
1996	11 days
1997	12 days
1998	13 days
1999	15 days
2000	9 days
2001	17 days
2002	13 days
2003	13 days
2004	14 days
2005	14 days
2006	16 days
2007	12 days
2008	12 days
2009	22 days
2010	16 days
2011	27 days
2012	12 days
2013	11 days
2014	17 days
2015	19 days
2016	13 days
2017	15 days
2018	15 days
2019	10 days
2021	4 days
2022	5 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

74 years, 1898 to 2018

A day with at least 45.8 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 99.9 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Portageville 1N: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	45.8 mm (1.8 in)
5 years	60.0 mm (2.4 in)
10 years	69.6 mm (2.7 in)
25 years	81.7 mm (3.2 in)
50 years	90.8 mm (3.6 in)
100 years	99.9 mm (3.9 in)	Longer than the 74 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, 74 years of values from 1898 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: 108.0 mm (4.3 in) in 1908; 88.9 mm (3.5 in) in 1967; 86.4 mm (3.4 in) in 1959.

Download the Data

Data for Portageville 1N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Portageville 1N 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).