Roseway Threshold Days by Year (CA008204600)

15 fixed thresholds counted per year at Roseway (CA008204600): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roseway Thresholds

Roseway: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1967 with 65.
Roseway: days with 25 mm (0.98 in) or more of precipitation in 32 years, most in 1967 with 25.
Roseway: days with 10 cm (3.9 in) or more of snowfall in 32 years, most in 1956 with 11.
Roseway: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 1979 with 6.
15 fixed thresholds have at least one qualifying day at Roseway.

Days at or above 30 C (86 F)

17 years with a qualifying day

Days per year at Roseway with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 1973.

Days at or above 30 C (86 F) per year at Roseway
Year	Days	Decade average
1956	2	1.3
1957	1	1.3
1958	1	1.3
1960	1	2.1
1961	4	2.1
1963	5	2.1
1964	1	2.1
1966	1	2.1
1968	2	2.1
1969	1	2.1
1970	4	3.3
1973	8	3.3
1976	2	3.3
1977	2	3.3
1978	2	3.3
1979	2	3.3
1983	2	2

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

First to last qualifying date each year at Roseway
Year	First date	Last date
1956	1956-06-13	1956-06-16
1957	1957-06-16	1957-06-16
1958	1958-07-02	1958-07-02
1960	1960-08-30	1960-08-30
1961	1961-08-09	1961-09-12
1963	1963-06-25	1963-07-28
1964	1964-05-24	1964-05-24
1966	1966-06-28	1966-06-28
1968	1968-07-02	1968-07-16
1969	1969-09-01	1969-09-01
1970	1970-07-24	1970-07-27
1973	1973-07-07	1973-09-03
1976	1976-08-22	1976-08-23
1977	1977-05-23	1977-07-20
1978	1978-08-18	1978-08-23
1979	1979-06-16	1979-07-13
1983	1983-06-22	1983-06-23

Every Fixed Threshold

Fixed thresholds at Roseway
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	17	8	1973	2
35 C (95 F): Days	1	1	1976	1
90 F (32.2 C): Days	4	2	1963	1
0 C (32 F): Ice days (max	25	68	1970	32
0 C (32 F): Frost days (min	25	197	1965	136
-10 C (14 F): Days with min	25	58	1962	27
-20 C (-4 F): Days with min	23	11	1961	6
-30 C (-22 F): Days with min	1	1	1971	1
20 C (68 F): Tropical nights (min	3	3	1979	3
10 mm (0.39 in): Days with 10 mm or more rain	32	65	1967	56
25 mm (0.98 in): Days with 25 mm or more rain	32	25	1967	18
50 mm (1.97 in): Days with 50 mm or more rain	30	6	1979	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1954	1
10 cm (3.9 in): Days with 10 cm or more snowfall	32	11	1956	4
25 cm (9.8 in): Days with 25 cm or more snowfall	10	2	1957	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

Data for Roseway 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).

Roseway Threshold Days by Year (CA008204600)

Key Facts for Roseway Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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