Sunnyside Threshold Days by Year

13 fixed thresholds counted per year at Sunnyside (USC00428474): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sunnyside Thresholds

Sunnyside: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1916 with 16.
Sunnyside: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 1962 with 58.
Sunnyside: days with a maximum temperature at or below 0 C (32 F) in 27 years, most in 1979 with 60.
Sunnyside: nights with a minimum temperature at or below 0 C (32 F) in 27 years, most in 1970 with 204.
13 fixed thresholds have at least one qualifying day at Sunnyside.

Days at or above 30 C (86 F)

27 years with a qualifying day

Days per year at Sunnyside with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 58 in 1962.

Days at or above 30 C (86 F) per year at Sunnyside
Year	Days	Decade average
1921	34	31.4
1922	36	31.4
1923	17	31.4
1924	36	31.4
1925	24	31.4
1926	40	31.4
1927	23	31.4
1928	32	31.4
1929	41	31.4
1962	58	45
1967	45	45
1968	34	45
1969	43	45
1970	41	22
1975	16	22
1976	11	22
1977	22	22
1978	17	22
1979	25	22
1980	25	19.4
1981	29	19.4
1982	23	19.4
1983	11	19.4
1984	8	19.4
1985	29	19.4
1986	20	19.4
1987	10	19.4

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

First to last qualifying date each year at Sunnyside
Year	First date	Last date
1921	1921-06-11	1921-08-07
1922	1922-06-18	1922-09-17
1923	1923-06-29	1923-07-31
1924	1924-06-13	1924-09-04
1925	1925-05-21	1925-08-07
1926	1926-05-22	1926-08-28
1927	1927-06-23	1927-08-23
1928	1928-06-25	1928-08-21
1929	1929-06-21	1929-08-31
1962	1962-06-10	1962-08-19
1967	1967-05-24	1967-09-12
1968	1968-06-17	1968-08-07
1969	1969-05-29	1969-08-28
1970	1970-07-13	1970-08-25
1975	1975-07-01	1975-08-11
1976	1976-06-20	1976-09-05
1977	1977-06-05	1977-09-08
1978	1978-07-01	1978-08-12
1979	1979-06-25	1979-08-09
1980	1980-06-27	1980-08-15
1981	1981-06-23	1981-08-27
1982	1982-06-29	1982-08-24
1983	1983-06-19	1983-08-11
1984	1984-06-29	1984-08-10
1985	1985-06-08	1985-09-01
1986	1986-06-18	1986-08-19
1987	1987-06-14	1987-08-06

Every Fixed Threshold

Fixed thresholds at Sunnyside
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	27	58	1962	10
35 C (95 F): Days	6	8	1969	2
90 F (32.2 C): Days	24	26	1969	2
0 C (32 F): Ice days (max	27	60	1979	42
0 C (32 F): Frost days (min	27	204	1970	167
-10 C (14 F): Days with min	27	68	1975	54
-20 C (-4 F): Days with min	13	5	1982	3
20 C (68 F): Tropical nights (min	2	2	1925	2
10 mm (0.39 in): Days with 10 mm or more rain	32	16	1916	11
25 mm (0.98 in): Days with 25 mm or more rain	24	5	1906	3
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1985	1
10 cm (3.9 in): Days with 10 cm or more snowfall	15	13	1969	3
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1969	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1921.

Download the Data

Data for Sunnyside 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).

Sunnyside Threshold Days by Year

Key Facts for Sunnyside Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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