Roadene Threshold Days by Year (CA004026840)

17 fixed thresholds counted per year at Roadene (CA004026840): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roadene Thresholds

Roadene: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1981 with 14.
Roadene: nights with a minimum temperature at or below 0 C (32 F) in 38 years, most in 1961 with 215.
Roadene: nights with a minimum temperature at or below -10 C (14 F) in 38 years, most in 1955 with 130.
Roadene: nights with a minimum temperature at or below -20 C (-4 F) in 38 years, most in 1955 with 63.
17 fixed thresholds have at least one qualifying day at Roadene.

Days at or above 30 C (86 F)

36 years with a qualifying day

Days per year at Roadene with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 44 in 1961.

Days at or above 30 C (86 F) per year at Roadene
Year	Days	Decade average
1937	39	29.3
1938	25	29.3
1939	24	29.3
1940	26	26.6
1941	25	26.6
1943	31	26.6
1944	19	26.6
1945	28	26.6
1946	23	26.6
1947	25	26.6
1948	31	26.6
1949	31	26.6
1954	13	17.5
1955	18	17.5
1956	17	17.5
1959	22	17.5
1960	29	27.5
1961	44	27.5
1962	14	27.5
1963	33	27.5
1964	30	27.5
1965	20	27.5
1966	20	27.5
1967	37	27.5
1968	21	27.5
1969	27	27.5
1970	33	24.8
1971	30	24.8
1972	20	24.8
1973	23	24.8
1974	17	24.8
1976	20	24.8
1977	19	24.8
1979	36	24.8
1980	28	30.5
1981	33	30.5

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

First to last qualifying date each year at Roadene
Year	First date	Last date
1937	1937-06-02	1937-09-20
1938	1938-05-27	1938-09-24
1939	1939-04-28	1939-08-31
1940	1940-07-03	1940-09-03
1941	1941-05-23	1941-08-22
1943	1943-07-02	1943-10-07
1944	1944-05-27	1944-09-07
1945	1945-06-20	1945-09-14
1946	1946-05-26	1946-09-14
1947	1947-07-02	1947-09-04
1948	1948-05-18	1948-09-22
1949	1949-04-28	1949-09-23
1954	1954-05-19	1954-08-30
1955	1955-05-19	1955-09-02
1956	1956-05-19	1956-08-22
1959	1959-06-02	1959-08-08
1960	1960-05-12	1960-09-09
1961	1961-06-03	1961-09-16
1962	1962-06-24	1962-09-27
1963	1963-05-24	1963-10-03
1964	1964-05-19	1964-10-13
1965	1965-06-10	1965-08-23
1966	1966-05-26	1966-09-18
1967	1967-06-26	1967-09-29
1968	1968-04-30	1968-09-11
1969	1969-05-26	1969-09-18
1970	1970-05-16	1970-09-29
1971	1971-05-13	1971-09-11
1972	1972-05-17	1972-08-29
1973	1973-06-13	1973-09-29
1974	1974-06-19	1974-09-17
1976	1976-05-08	1976-09-29
1977	1977-04-25	1977-08-11
1979	1979-05-26	1979-09-16
1980	1980-04-20	1980-10-08
1981	1981-06-26	1981-09-19

Every Fixed Threshold

Fixed thresholds at Roadene
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	36	44	1961	33
35 C (95 F): Days	34	11	1937	3
40 C (104 F): Days	3	1	1937	1
90 F (32.2 C): Days	36	27	1961	17
100 F (37.8 C): Days	15	4	1937	1
0 C (32 F): Ice days (max	36	117	1955	55
0 C (32 F): Frost days (min	38	215	1961	175
-10 C (14 F): Days with min	38	130	1955	55
-20 C (-4 F): Days with min	38	63	1955	14
-30 C (-22 F): Days with min	38	25	1937	3
-40 C (-40 F): Days with min	12	4	1969	1
20 C (68 F): Tropical nights (min	9	2	1941	1
10 mm (0.39 in): Days with 10 mm or more rain	40	14	1981	9
25 mm (0.98 in): Days with 25 mm or more rain	24	4	1965	3
50 mm (1.97 in): Days with 50 mm or more rain	5	1	1939	1
10 cm (3.9 in): Days with 10 cm or more snowfall	36	7	1967	3
25 cm (9.8 in): Days with 25 cm or more snowfall	4	1	1939	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

Data for Roadene 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).

Roadene Threshold Days by Year (CA004026840)

Key Facts for Roadene Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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