State Line Threshold Days by Year (USC00228382)

14 fixed thresholds counted per year at State Line (USC00228382): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for State Line Thresholds

State Line: days with a maximum temperature at or above 30 C (86 F) in 18 years, most in 1962 with 152.
State Line: days with a maximum temperature at or above 90 F (32.2 C) in 18 years, most in 1962 with 111.
State Line: nights with a minimum temperature at or below 0 C (32 F) in 18 years, most in 1963 with 79.
State Line: nights with a minimum temperature at or above 20 C (68 F) in 18 years, most in 1970 with 98.
14 fixed thresholds have at least one qualifying day at State Line.

Days at or above 30 C (86 F)

18 years with a qualifying day

Days per year at State Line with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 152 in 1962.

Days at or above 30 C (86 F) per year at State Line
Year	Days	Decade average
1957	132	129.3
1958	120	129.3
1959	136	129.3
1960	126	132.9
1961	111	132.9
1962	152	132.9
1963	148	132.9
1965	141	132.9
1967	134	132.9
1968	134	132.9
1969	117	132.9
1970	131	119.1
1971	124	119.1
1972	134	119.1
1973	120	119.1
1974	120	119.1
1975	103	119.1
1976	102	119.1

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

First to last qualifying date each year at State Line
Year	First date	Last date
1957	1957-02-05	1957-09-23
1958	1958-04-25	1958-10-11
1959	1959-04-20	1959-10-14
1960	1960-04-22	1960-10-05
1961	1961-05-06	1961-11-01
1962	1962-04-21	1962-10-21
1963	1963-03-14	1963-10-28
1965	1965-04-06	1965-10-18
1967	1967-03-12	1967-10-15
1968	1968-04-18	1968-10-15
1969	1969-05-14	1969-10-14
1970	1970-04-18	1970-10-04
1971	1971-04-21	1971-10-18
1972	1972-04-13	1972-11-03
1973	1973-03-10	1973-10-11
1974	1974-03-08	1974-09-29
1975	1975-04-27	1975-09-29
1976	1976-04-20	1976-10-06

Every Fixed Threshold

Fixed thresholds at State Line
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	18	152	1962	102
35 C (95 F): Days	17	43	1962	10
90 F (32.2 C): Days	18	111	1962	56
100 F (37.8 C): Days	2	1	1963	1
0 C (32 F): Ice days (max	4	4	1962	1
0 C (32 F): Frost days (min	18	79	1963	56
-10 C (14 F): Days with min	6	6	1962	1
20 C (68 F): Tropical nights (min	18	98	1970	53
10 mm (0.39 in): Days with 10 mm or more rain	18	67	1961	40
25 mm (0.98 in): Days with 25 mm or more rain	18	37	1961	15
50 mm (1.97 in): Days with 50 mm or more rain	18	11	1961	3
100 mm (3.94 in): Days with 100 mm or more rain	8	3	1961	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1961	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

Download the Data

Data for State Line 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).

State Line Threshold Days by Year (USC00228382)

Key Facts for State Line Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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