Portageville 1N Threshold Days by Year (USC00306745)

17 fixed thresholds counted per year at Portageville 1N (USC00306745): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Portageville 1N Thresholds

Portageville 1N: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 1977 with 41.
Portageville 1N: days with 25 mm (0.98 in) or more of precipitation in 74 years, most in 2017 with 12.
Portageville 1N: days with 10 cm (3.9 in) or more of snowfall in 47 years, most in 1993 with 9.
Portageville 1N: days with 50 mm (1.97 in) or more of precipitation in 33 years, most in 1898 with 2.
17 fixed thresholds have at least one qualifying day at Portageville 1N.

Days at or above 30 C (86 F)

15 years with a qualifying day

Days per year at Portageville 1N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 47 in 1898.

Days at or above 30 C (86 F) per year at Portageville 1N
Year	Days	Decade average
1898	47	47
1905	17	20
1906	22	20
1907	20	20
1908	25	20
1909	16	20
1910	21	19.1
1911	30	19.1
1912	18	19.1
1913	37	19.1
1914	16	19.1
1915	6	19.1
1916	18	19.1
1917	5	19.1
1918	21	19.1

For each year, a bar from the first to the last day at Portageville 1N meeting 30 C (86 F).

First to last qualifying date each year at Portageville 1N
Year	First date	Last date
1898	1898-06-06	1898-09-30
1905	1905-06-15	1905-10-15
1906	1906-05-18	1906-09-19
1907	1907-05-13	1907-08-20
1908	1908-05-25	1908-09-25
1909	1909-06-21	1909-09-23
1910	1910-06-21	1910-08-16
1911	1911-05-11	1911-09-02
1912	1912-05-23	1912-09-10
1913	1913-04-24	1913-10-10
1914	1914-05-21	1914-09-22
1915	1915-04-24	1915-09-15
1916	1916-07-11	1916-09-07
1917	1917-07-23	1917-08-01
1918	1918-07-05	1918-08-23

Every Fixed Threshold

Fixed thresholds at Portageville 1N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	15	47	1898	21
35 C (95 F): Days	8	7	1898	2
90 F (32.2 C): Days	14	27	1898	12
100 F (37.8 C): Days	1	2	1911	2
0 C (32 F): Ice days (max	15	70	1917	53
0 C (32 F): Frost days (min	16	173	1905	140
-10 C (14 F): Days with min	16	60	1905	43
-20 C (-4 F): Days with min	15	15	1917	12
-30 C (-22 F): Days with min	1	1	1914	1
20 C (68 F): Tropical nights (min	16	22	1911	10
25 C (77 F): Days with min	1	1	1911	1
10 mm (0.39 in): Days with 10 mm or more rain	74	41	1977	32
25 mm (0.98 in): Days with 25 mm or more rain	74	12	2017	12
50 mm (1.97 in): Days with 50 mm or more rain	33	2	1898	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1908	1
10 cm (3.9 in): Days with 10 cm or more snowfall	47	9	1993	5
25 cm (9.8 in): Days with 25 cm or more snowfall	16	2	1971	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Portageville 1N Threshold Days by Year (USC00306745)

Key Facts for Portageville 1N Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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