Island Falls Threshold Days by Year (CA006073840)

16 fixed thresholds counted per year at Island Falls (CA006073840): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Island Falls Thresholds

Island Falls: nights with a minimum temperature at or below 0 C (32 F) in 28 years, most in 1958 with 226.
Island Falls: nights with a minimum temperature at or below -10 C (14 F) in 28 years, most in 1978 with 142.
Island Falls: nights with a minimum temperature at or below -20 C (-4 F) in 28 years, most in 1972 with 97.
Island Falls: nights with a minimum temperature at or below -30 C (-22 F) in 28 years, most in 1976 with 48.
16 fixed thresholds have at least one qualifying day at Island Falls.

Days at or above 30 C (86 F)

23 years with a qualifying day

Days per year at Island Falls with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 16 in 1976.

Days at or above 30 C (86 F) per year at Island Falls
Year	Days	Decade average
1956	3	4.8
1957	6	4.8
1958	1	4.8
1959	9	4.8
1962	7	3.8
1964	5	3.8
1967	2	3.8
1968	2	3.8
1969	3	3.8
1970	13	6.7
1971	3	6.7
1972	5	6.7
1973	4	6.7
1974	2	6.7
1975	12	6.7
1976	16	6.7
1977	5	6.7
1978	4	6.7
1979	3	6.7
1980	5	7
1981	3	7
1982	5	7
1983	15	7

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

First to last qualifying date each year at Island Falls
Year	First date	Last date
1956	1956-06-11	1956-06-13
1957	1957-06-18	1957-08-08
1958	1958-08-02	1958-08-02
1959	1959-06-09	1959-09-09
1962	1962-05-17	1962-07-07
1964	1964-06-29	1964-07-24
1967	1967-06-02	1967-07-21
1968	1968-07-14	1968-07-17
1969	1969-07-13	1969-08-23
1970	1970-06-09	1970-08-15
1971	1971-06-28	1971-08-09
1972	1972-05-19	1972-06-29
1973	1973-07-23	1973-08-28
1974	1974-07-08	1974-07-13
1975	1975-06-22	1975-08-02
1976	1976-06-05	1976-08-26
1977	1977-05-16	1977-07-20
1978	1978-05-18	1978-08-15
1979	1979-07-07	1979-07-13
1980	1980-06-23	1980-07-18
1981	1981-07-07	1981-08-01
1982	1982-05-25	1982-07-06
1983	1983-06-12	1983-09-03

Every Fixed Threshold

Fixed thresholds at Island Falls
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	23	16	1976	15
35 C (95 F): Days	3	2	1975	1
90 F (32.2 C): Days	13	6	1975	3
0 C (32 F): Ice days (max	25	144	1959	126
0 C (32 F): Frost days (min	28	226	1958	211
-10 C (14 F): Days with min	28	142	1978	120
-20 C (-4 F): Days with min	28	97	1972	68
-30 C (-22 F): Days with min	28	48	1976	23
-40 C (-40 F): Days with min	27	15	1957	4
20 C (68 F): Tropical nights (min	16	6	1975	3
10 mm (0.39 in): Days with 10 mm or more rain	28	32	1979	22
25 mm (0.98 in): Days with 25 mm or more rain	28	7	1979	3
50 mm (1.97 in): Days with 50 mm or more rain	6	2	1974	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1982	1
10 cm (3.9 in): Days with 10 cm or more snowfall	27	9	1964	6
25 cm (9.8 in): Days with 25 cm or more snowfall	8	1	1956	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 Island Falls 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).

Island Falls Threshold Days by Year (CA006073840)

Key Facts for Island Falls Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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