Myrtle Threshold Days by Year (CA005021975)

14 fixed thresholds counted per year at Myrtle (CA005021975): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Myrtle Thresholds

Myrtle: days with a maximum temperature at or above 30 C (86 F) in 15 years, most in 1983 with 39.
Myrtle: days with a maximum temperature at or above 90 F (32.2 C) in 15 years, most in 1980 with 20.
Myrtle: days with a maximum temperature at or below 0 C (32 F) in 15 years, most in 1979 with 132.
Myrtle: nights with a minimum temperature at or below 0 C (32 F) in 15 years, most in 1983 with 212.
14 fixed thresholds have at least one qualifying day at Myrtle.

Days at or above 30 C (86 F)

15 years with a qualifying day

Days per year at Myrtle with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1983.

Days at or above 30 C (86 F) per year at Myrtle
Year	Days	Decade average
1967	18	15.3
1968	6	15.3
1969	22	15.3
1970	27	19.9
1971	11	19.9
1972	27	19.9
1973	14	19.9
1974	29	19.9
1975	15	19.9
1978	25	19.9
1979	11	19.9
1980	30	23.3
1981	13	23.3
1982	11	23.3
1983	39	23.3

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

First to last qualifying date each year at Myrtle
Year	First date	Last date
1967	1967-06-03	1967-09-06
1968	1968-05-01	1968-09-14
1969	1969-05-14	1969-09-14
1970	1970-05-17	1970-09-19
1971	1971-06-03	1971-09-02
1972	1972-05-15	1972-08-30
1973	1973-05-17	1973-08-31
1974	1974-06-03	1974-09-26
1975	1975-06-20	1975-08-23
1978	1978-05-23	1978-09-10
1979	1979-06-13	1979-09-16
1980	1980-05-02	1980-09-07
1981	1981-05-20	1981-08-30
1982	1982-05-28	1982-09-10
1983	1983-06-10	1983-09-02

Every Fixed Threshold

Fixed thresholds at Myrtle
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	15	39	1983	39
35 C (95 F): Days	14	7	1969	6
90 F (32.2 C): Days	15	20	1980	18
100 F (37.8 C): Days	6	2	1980	2
0 C (32 F): Ice days (max	15	132	1979	117
0 C (32 F): Frost days (min	15	212	1983	212
-10 C (14 F): Days with min	15	132	1970	98
-20 C (-4 F): Days with min	15	86	1978	47
-30 C (-22 F): Days with min	15	33	1979	9
20 C (68 F): Tropical nights (min	7	5	1983	5
10 mm (0.39 in): Days with 10 mm or more rain	15	20	1968	9
25 mm (0.98 in): Days with 25 mm or more rain	12	5	1968	2
50 mm (1.97 in): Days with 50 mm or more rain	7	2	1978	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	7	1970	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.

Download the Data

Data for Myrtle 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).

Myrtle Threshold Days by Year (CA005021975)

Key Facts for Myrtle Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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