Jasper 1 NNW Threshold Days by Year (USC00094648)

16 fixed thresholds counted per year at Jasper 1 NNW (USC00094648): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jasper 1 NNW Thresholds

Jasper 1 NNW: days with 10 mm (0.39 in) or more of precipitation in 83 years, most in 1989 with 66.
Jasper 1 NNW: days with 25 mm (0.98 in) or more of precipitation in 83 years, most in 1989 with 26.
Jasper 1 NNW: nights with a minimum temperature at or below 0 C (32 F) in 80 years, most in 1960 with 91.
Jasper 1 NNW: nights with a minimum temperature at or above 20 C (68 F) in 80 years, most in 2002 with 65.
16 fixed thresholds have at least one qualifying day at Jasper 1 NNW.

Days at or above 30 C (86 F)

79 years with a qualifying day

Days per year at Jasper 1 NNW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 117 in 1941.

Days at or above 30 C (86 F) per year at Jasper 1 NNW
Year	Days	Decade average
1941	117	90.2
1942	89	90.2
1943	104	90.2
1944	97	90.2
1945	84	90.2
1946	84	90.2
1947	88	90.2
1948	77	90.2
1949	72	90.2
1950	51	80.7
1951	94	80.7
1952	90	80.7
1953	92	80.7
1954	99	80.7
1955	100	80.7
1956	91	80.7
1957	64	80.7
1958	65	80.7
1959	61	80.7
1960	65	44.9
1961	42	44.9
1962	71	44.9
1963	42	44.9
1964	49	44.9
1965	33	44.9
1966	36	44.9
1967	17	44.9
1968	48	44.9
1969	46	44.9
1970	51	48.7
1971	32	48.7
1972	39	48.7
1973	40	48.7
1974	34	48.7
1975	49	48.7
1976	43	48.7
1977	78	48.7
1978	79	48.7
1979	42	48.7
1980	91	62.6
1981	58	62.6
1983	63	62.6
1984	49	62.6
1986	69	62.6
1987	73	62.6
1988	67	62.6
1989	31	62.6
1990	56	45.2
1991	40	45.2
1992	15	45.2
1993	68	45.2
1994	15	45.2
1995	44	45.2
1996	45	45.2
1997	41	45.2
1998	74	45.2
1999	54	45.2
2000	50	47.1
2001	18	47.1
2002	61	47.1
2004	25	47.1
2005	43	47.1
2006	68	47.1
2007	67	47.1
2008	45	47.1
2010	79	51
2011	71	51
2012	36	51
2016	70	51
2017	15	51
2018	23	51
2019	63	51
2020	20	32.9
2021	19	32.9
2022	40	32.9
2023	26	32.9
2024	49	32.9
2025	37	32.9
2026	39	32.9

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

First to last qualifying date each year at Jasper 1 NNW
Year	First date	Last date
1941	1941-04-19	1941-10-23
1942	1942-04-05	1942-09-24
1943	1943-04-28	1943-10-20
1944	1944-05-13	1944-10-07
1945	1945-04-03	1945-09-26
1946	1946-04-20	1946-09-26
1947	1947-05-15	1947-09-25
1948	1948-05-12	1948-09-22
1949	1949-05-04	1949-09-18
1950	1950-05-04	1950-10-15
1951	1951-04-30	1951-10-06
1952	1952-05-02	1952-09-30
1953	1953-05-22	1953-10-01
1954	1954-05-30	1954-10-13
1955	1955-04-17	1955-09-30
1956	1956-04-30	1956-09-18
1957	1957-05-17	1957-09-14
1958	1958-05-16	1958-09-26
1959	1959-05-02	1959-10-05
1960	1960-04-24	1960-09-09
1961	1961-06-03	1961-09-27
1962	1962-04-30	1962-09-14
1963	1963-05-09	1963-09-21
1964	1964-05-18	1964-09-10
1965	1965-04-23	1965-08-28
1966	1966-06-08	1966-09-06
1967	1967-05-26	1967-09-20
1968	1968-06-10	1968-08-26
1969	1969-05-30	1969-09-18
1970	1970-04-30	1970-09-26
1971	1971-06-02	1971-09-11
1972	1972-06-05	1972-09-19
1973	1973-06-17	1973-09-12
1974	1974-05-18	1974-09-13
1975	1975-05-21	1975-09-10
1976	1976-04-19	1976-08-29
1977	1977-04-11	1977-09-03
1978	1978-04-02	1978-09-22
1979	1979-05-10	1979-09-06
1980	1980-04-23	1980-09-24
1981	1981-05-30	1981-10-01
1983	1983-06-17	1983-09-13
1984	1984-05-02	1984-09-26
1986	1986-04-27	1986-09-29
1987	1987-05-01	1987-09-11
1988	1988-05-31	1988-09-15
1989	1989-06-01	1989-09-09
1990	1990-06-08	1990-09-13
1991	1991-05-31	1991-09-18
1992	1992-06-26	1992-08-12
1993	1993-06-05	1993-09-20
1994	1994-06-03	1994-09-02
1995	1995-06-09	1995-09-10
1996	1996-05-19	1996-09-08
1997	1997-06-21	1997-09-21
1998	1998-05-15	1998-09-23
1999	1999-06-05	1999-09-09
2000	2000-05-19	2000-09-06
2001	2001-05-17	2001-08-28
2002	2002-06-03	2002-09-12
2004	2004-05-09	2004-09-25
2005	2005-06-06	2005-09-24
2006	2006-05-21	2006-08-31
2007	2007-03-26	2007-10-09
2008	2008-06-04	2008-09-13
2010	2010-06-12	2010-09-25
2011	2011-05-23	2011-09-04
2012	2012-05-27	2012-09-08
2016	2016-06-01	2016-09-26
2017	2017-07-14	2017-08-23
2018	2018-05-15	2018-09-21
2019	2019-05-27	2019-10-05
2020	2020-06-30	2020-08-13
2021	2021-05-26	2021-08-26
2022	2022-05-20	2022-09-22
2023	2023-07-02	2023-09-05
2024	2024-06-15	2024-09-25
2025	2025-06-18	2025-09-21
2026	2026-06-12	2026-10-01

Every Fixed Threshold

Fixed thresholds at Jasper 1 NNW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	79	117	1941	39
35 C (95 F): Days	40	27	1944	3
90 F (32.2 C): Days	72	73	1941	7
100 F (37.8 C): Days	8	7	1944	2
0 C (32 F): Ice days (max	70	16	2010	4
0 C (32 F): Frost days (min	80	91	1960	38
-10 C (14 F): Days with min	69	20	1977	4
-20 C (-4 F): Days with min	7	2	1983	2
20 C (68 F): Tropical nights (min	80	65	2002	51
25 C (77 F): Days with min	2	2	1988	2
10 mm (0.39 in): Days with 10 mm or more rain	83	66	1989	38
25 mm (0.98 in): Days with 25 mm or more rain	83	26	1989	15
50 mm (1.97 in): Days with 50 mm or more rain	77	10	2018	6
100 mm (3.94 in): Days with 100 mm or more rain	24	2	1964	1
10 cm (3.9 in): Days with 10 cm or more snowfall	7	1	1958	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

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Data for Jasper 1 NNW 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Jasper 1 NNW Threshold Days by Year (USC00094648)

Key Facts for Jasper 1 NNW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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