Porcupine 11 N Threshold Days by Year (USC00396736)

20 fixed thresholds counted per year at Porcupine 11 N (USC00396736): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Porcupine 11 N Thresholds

Porcupine 11 N: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1993 with 25.
Porcupine 11 N: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1977 with 6.
Porcupine 11 N: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1987 with 86.
Porcupine 11 N: days with a maximum temperature at or above 35 C (95 F) in 39 years, most in 1974 with 38.
20 fixed thresholds have at least one qualifying day at Porcupine 11 N.

Days at or above 30 C (86 F)

39 years with a qualifying day

Days per year at Porcupine 11 N with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 86 in 1987.

Days at or above 30 C (86 F) per year at Porcupine 11 N
Year	Days	Decade average
1966	71	61
1967	51	61
1968	48	61
1969	74	61
1970	85	71.2
1971	69	71.2
1972	66	71.2
1973	68	71.2
1974	72	71.2
1975	68	71.2
1976	81	71.2
1977	57	71.2
1978	78	71.2
1979	68	71.2
1980	78	74.4
1981	70	74.4
1982	60	74.4
1983	77	74.4
1984	81	74.4
1985	81	74.4
1986	62	74.4
1987	86	74.4
1990	67	49
1991	56	49
1992	41	49
1993	23	49
1994	55	49
1995	50	49
1996	57	49
1997	48	49
1998	49	49
1999	44	49
2003	72	59.6
2004	54	59.6
2005	66	59.6
2006	71	59.6
2009	35	59.6
2010	59	59
2011	59	59

For each year, a bar from the first to the last day at Porcupine 11 N meeting 30 C (86 F).

First to last qualifying date each year at Porcupine 11 N
Year	First date	Last date
1966	1966-05-04	1966-09-23
1967	1967-05-22	1967-10-03
1968	1968-06-02	1968-10-29
1969	1969-05-14	1969-09-28
1970	1970-05-07	1970-10-05
1971	1971-06-10	1971-09-25
1972	1972-05-15	1972-10-10
1973	1973-05-18	1973-10-23
1974	1974-05-19	1974-10-21
1975	1975-05-15	1975-10-07
1976	1976-05-11	1976-10-02
1977	1977-04-09	1977-09-28
1978	1978-05-14	1978-09-27
1979	1979-05-16	1979-10-07
1980	1980-04-18	1980-10-12
1981	1981-04-24	1981-10-02
1982	1982-05-02	1982-09-27
1983	1983-05-26	1983-09-27
1984	1984-05-15	1984-10-12
1985	1985-04-11	1985-09-18
1986	1986-05-03	1986-08-31
1987	1987-04-17	1987-10-03
1990	1990-06-05	1990-10-06
1991	1991-05-15	1991-10-17
1992	1992-05-01	1992-10-22
1993	1993-05-27	1993-10-07
1994	1994-05-17	1994-09-29
1995	1995-06-15	1995-09-29
1996	1996-04-11	1996-10-06
1997	1997-03-21	1997-10-12
1998	1998-06-25	1998-09-27
1999	1999-05-30	1999-10-07
2003	2003-04-13	2003-10-20
2004	2004-05-04	2004-09-20
2005	2005-05-20	2005-10-01
2006	2006-05-19	2006-10-07
2009	2009-04-24	2009-09-27
2010	2010-05-29	2010-10-08
2011	2011-06-03	2011-10-05

Every Fixed Threshold

Fixed thresholds at Porcupine 11 N
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	39	86	1987	59
35 C (95 F): Days	39	38	1974	17
40 C (104 F): Days	27	11	1987	1
45 C (113 F): Days	1	1	1980	1
90 F (32.2 C): Days	39	71	1985	42
100 F (37.8 C): Days	36	20	1974	9
110 F (43.3 C): Days	5	2	1980	1
0 C (32 F): Ice days (max	39	76	1978	45
0 C (32 F): Frost days (min	38	203	1990	183
-10 C (14 F): Days with min	38	88	1996	74
-20 C (-4 F): Days with min	38	38	1996	17
-30 C (-22 F): Days with min	30	10	1996	2
-40 C (-40 F): Days with min	3	3	1990	1
20 C (68 F): Tropical nights (min	31	13	1984	6
25 C (77 F): Days with min	2	1	1977	1
10 mm (0.39 in): Days with 10 mm or more rain	41	25	1993	16
25 mm (0.98 in): Days with 25 mm or more rain	41	6	1977	1
50 mm (1.97 in): Days with 50 mm or more rain	13	1	1967	1
10 cm (3.9 in): Days with 10 cm or more snowfall	35	8	2009	4
25 cm (9.8 in): Days with 25 cm or more snowfall	5	2	1977	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.

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Data for Porcupine 11 N 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).

Porcupine 11 N Threshold Days by Year (USC00396736)

Key Facts for Porcupine 11 N Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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