Walker Threshold Days by Year (USC00218618)

18 fixed thresholds counted per year at Walker (USC00218618): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Walker Thresholds

Walker: nights with a minimum temperature at or below 0 C (32 F) in 67 years, most in 1946 with 199.
Walker: nights with a minimum temperature at or below -10 C (14 F) in 67 years, most in 1955 with 126.
Walker: nights with a minimum temperature at or below -20 C (-4 F) in 67 years, most in 1950 with 66.
Walker: nights with a minimum temperature at or below -30 C (-22 F) in 67 years, most in 1966 with 18.
18 fixed thresholds have at least one qualifying day at Walker.

Days at or above 30 C (86 F)

64 years with a qualifying day

Days per year at Walker with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 31 in 1910.

Days at or above 30 C (86 F) per year at Walker
Year	Days	Decade average
1908	14	12.5
1909	11	12.5
1910	31	31
1946	5	13.8
1947	21	13.8
1948	17	13.8
1949	12	13.8
1950	8	11.8
1951	6	11.8
1952	13	11.8
1953	15	11.8
1954	5	11.8
1955	23	11.8
1956	6	11.8
1957	12	11.8
1958	13	11.8
1959	17	11.8
1960	14	11.7
1961	19	11.7
1962	3	11.7
1963	13	11.7
1964	16	11.7
1965	4	11.7
1966	8	11.7
1967	12	11.7
1968	6	11.7
1969	22	11.7
1970	30	16.1
1971	9	16.1
1972	5	16.1
1973	6	16.1
1974	13	16.1
1975	20	16.1
1976	30	16.1
1977	16	16.1
1980	25	15.2
1981	8	15.2
1982	11	15.2
1983	30	15.2
1984	14	15.2
1985	3	15.2
1986	9	15.2
1987	20	15.2
1989	17	15.2
1991	19	7.9
1992	3	7.9
1993	3	7.9
1994	1	7.9
1995	15	7.9
1996	8	7.9
1997	6	7.9
1998	6	7.9
1999	10	7.9
2000	7	12.7
2001	19	12.7
2003	11	12.7
2004	9	12.7
2005	15	12.7
2006	15	12.7
2007	13	12.7
2017	5	4
2018	4	4
2019	3	4
2021	26	26

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

First to last qualifying date each year at Walker
Year	First date	Last date
1908	1908-07-09	1908-09-22
1909	1909-06-19	1909-08-27
1910	1910-06-14	1910-10-17
1946	1946-06-16	1946-08-02
1947	1947-07-03	1947-10-05
1948	1948-06-02	1948-09-16
1949	1949-05-03	1949-08-26
1950	1950-05-23	1950-08-16
1951	1951-07-14	1951-08-01
1952	1952-04-28	1952-09-10
1953	1953-05-07	1953-10-02
1954	1954-07-11	1954-08-24
1955	1955-05-21	1955-08-24
1956	1956-06-09	1956-07-15
1957	1957-07-02	1957-08-08
1958	1958-06-28	1958-08-13
1959	1959-05-01	1959-08-20
1960	1960-07-08	1960-09-06
1961	1961-05-31	1961-09-02
1962	1962-06-28	1962-08-27
1963	1963-06-24	1963-10-05
1964	1964-05-21	1964-08-06
1965	1965-07-22	1965-08-13
1966	1966-06-21	1966-07-12
1967	1967-07-10	1967-09-07
1968	1968-07-12	1968-08-07
1969	1969-05-27	1969-09-12
1970	1970-06-04	1970-09-05
1971	1971-06-12	1971-09-03
1972	1972-05-17	1972-08-20
1973	1973-06-09	1973-08-28
1974	1974-07-01	1974-07-19
1975	1975-05-20	1975-08-24
1976	1976-06-05	1976-09-11
1977	1977-04-10	1977-07-23
1980	1980-04-21	1980-09-08
1981	1981-07-05	1981-08-13
1982	1982-07-03	1982-08-08
1983	1983-06-25	1983-09-08
1984	1984-07-02	1984-09-19
1985	1985-07-03	1985-07-07
1986	1986-05-29	1986-07-18
1987	1987-04-18	1987-08-15
1989	1989-06-19	1989-08-05
1991	1991-05-14	1991-08-28
1992	1992-06-11	1992-08-08
1993	1993-08-10	1993-08-25
1994	1994-06-14	1994-06-14
1995	1995-06-15	1995-08-22
1996	1996-06-11	1996-08-24
1997	1997-06-23	1997-08-01
1998	1998-05-18	1998-08-16
1999	1999-05-29	1999-08-27
2000	2000-05-05	2000-09-18
2001	2001-06-25	2001-09-06
2003	2003-07-02	2003-09-07
2004	2004-04-28	2004-09-02
2005	2005-06-19	2005-08-08
2006	2006-05-28	2006-08-01
2007	2007-06-12	2007-09-05
2017	2017-07-05	2017-07-21
2018	2018-05-25	2018-09-18
2019	2019-06-08	2019-07-16
2021	2021-06-04	2021-09-20

Every Fixed Threshold

Fixed thresholds at Walker
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	64	31	1910	26
35 C (95 F): Days	18	5	1910	2
90 F (32.2 C): Days	53	15	1910	13
100 F (37.8 C): Days	4	2	1976	1
0 C (32 F): Ice days (max	64	123	1950	76
0 C (32 F): Frost days (min	67	199	1946	162
-10 C (14 F): Days with min	67	126	1955	68
-20 C (-4 F): Days with min	67	66	1950	33
-30 C (-22 F): Days with min	67	18	1966	10
-40 C (-40 F): Days with min	3	2	1996	1
20 C (68 F): Tropical nights (min	57	15	1910	6
25 C (77 F): Days with min	5	8	1910	1
10 mm (0.39 in): Days with 10 mm or more rain	66	31	1999	16
25 mm (0.98 in): Days with 25 mm or more rain	66	13	1953	5
50 mm (1.97 in): Days with 50 mm or more rain	43	3	1909	1
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1953	1
10 cm (3.9 in): Days with 10 cm or more snowfall	56	12	2019	12
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1951	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

Data for Walker 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Walker Threshold Days by Year (USC00218618)

Key Facts for Walker Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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