Lone Rock Tri Co AP Threshold Days by Year

18 fixed thresholds counted per year at Lone Rock Tri Co AP (USW00014921): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lone Rock Tri Co AP Thresholds

Lone Rock Tri Co AP: days with a maximum temperature at or above 30 C (86 F) in 59 years, most in 2012 with 62.
Lone Rock Tri Co AP: days with a maximum temperature at or below 0 C (32 F) in 59 years, most in 1978 with 84.
Lone Rock Tri Co AP: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1952 with 187.
Lone Rock Tri Co AP: nights with a minimum temperature at or below -10 C (14 F) in 59 years, most in 1978 with 96.
18 fixed thresholds have at least one qualifying day at Lone Rock Tri Co AP.

Days at or above 30 C (86 F)

59 years with a qualifying day

Days per year at Lone Rock Tri Co AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 2012.

Days at or above 30 C (86 F) per year at Lone Rock Tri Co AP
Year	Days	Decade average
1949	52	52
1950	19	34.2
1951	13	34.2
1952	42	34.2
1953	42	34.2
1954	35	34.2
1955	57	34.2
1956	33	34.2
1957	27	34.2
1958	28	34.2
1959	46	34.2
1960	25	28.8
1961	39	28.8
1962	24	28.8
1963	45	28.8
1964	38	28.8
1965	20	28.8
1966	28	28.8
1967	15	28.8
1968	30	28.8
1969	24	28.8
1970	42	33.2
1971	35	33.2
1972	36	33.2
1973	31	33.2
1974	18	33.2
1975	35	33.2
1976	44	33.2
1977	31	33.2
1978	30	33.2
1979	30	33.2
1980	47	29.3
1981	23	29.3
1982	18	29.3
2001	30	27.5
2002	34	27.5
2003	36	27.5
2004	6	27.5
2005	40	27.5
2006	21	27.5
2007	39	27.5
2009	14	27.5
2010	33	35
2011	47	35
2012	62	35
2013	36	35
2014	42	35
2015	20	35
2016	26	35
2017	26	35
2018	36	35
2019	22	35
2020	31	37.7
2021	38	37.7
2022	38	37.7
2023	51	37.7
2024	34	37.7
2025	42	37.7
2026	30	37.7

For each year, a bar from the first to the last day at Lone Rock Tri Co AP meeting 30 C (86 F).

First to last qualifying date each year at Lone Rock Tri Co AP
Year	First date	Last date
1949	1949-05-03	1949-10-08
1950	1950-05-24	1950-08-24
1951	1951-05-18	1951-08-28
1952	1952-04-28	1952-09-28
1953	1953-05-20	1953-10-02
1954	1954-06-09	1954-09-27
1955	1955-05-03	1955-09-18
1956	1956-05-22	1956-08-27
1957	1957-05-01	1957-09-01
1958	1958-05-14	1958-09-03
1959	1959-05-02	1959-09-09
1960	1960-07-21	1960-09-08
1961	1961-05-12	1961-09-10
1962	1962-04-26	1962-09-12
1963	1963-06-02	1963-10-06
1964	1964-05-18	1964-09-09
1965	1965-05-02	1965-08-17
1966	1966-05-26	1966-09-01
1967	1967-05-18	1967-08-16
1968	1968-05-15	1968-09-03
1969	1969-05-27	1969-09-13
1970	1970-04-29	1970-09-07
1971	1971-06-04	1971-10-01
1972	1972-05-17	1972-08-30
1973	1973-06-08	1973-09-01
1974	1974-06-21	1974-08-27
1975	1975-05-19	1975-10-14
1976	1976-06-08	1976-10-02
1977	1977-04-19	1977-08-28
1978	1978-05-26	1978-09-20
1979	1979-05-09	1979-09-12
1980	1980-04-23	1980-09-09
1981	1981-06-06	1981-09-12
1982	1982-05-15	1982-09-12
2001	2001-05-15	2001-08-09
2002	2002-04-15	2002-09-09
2003	2003-04-14	2003-09-11
2004	2004-04-28	2004-07-20
2005	2005-06-06	2005-10-04
2006	2006-05-28	2006-08-04
2007	2007-04-29	2007-10-07
2009	2009-04-24	2009-08-15
2010	2010-05-23	2010-10-09
2011	2011-05-10	2011-09-12
2012	2012-05-15	2012-09-11
2013	2013-04-30	2013-09-19
2014	2014-05-20	2014-09-29
2015	2015-06-09	2015-09-06
2016	2016-05-06	2016-09-06
2017	2017-06-02	2017-09-25
2018	2018-05-24	2018-10-03
2019	2019-06-27	2019-09-30
2020	2020-05-26	2020-08-28
2021	2021-05-01	2021-10-01
2022	2022-05-10	2022-09-20
2023	2023-04-12	2023-10-03
2024	2024-05-12	2024-09-20
2025	2025-05-15	2025-10-04
2026	2026-05-25	2026-09-04

Every Fixed Threshold

Fixed thresholds at Lone Rock Tri Co AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	59	62	2012	30
35 C (95 F): Days	38	16	1955	2
90 F (32.2 C): Days	58	40	1955	10
100 F (37.8 C): Days	3	5	2012	1
0 C (32 F): Ice days (max	59	84	1978	34
0 C (32 F): Frost days (min	59	187	1952	93
-10 C (14 F): Days with min	59	96	1978	32
-20 C (-4 F): Days with min	59	56	1978	13
-30 C (-22 F): Days with min	34	17	1977	1
-40 C (-40 F): Days with min	2	2	1951	1
20 C (68 F): Tropical nights (min	59	26	2010	18
25 C (77 F): Days with min	5	2	2011	2
10 mm (0.39 in): Days with 10 mm or more rain	59	36	1981	24
25 mm (0.98 in): Days with 25 mm or more rain	59	14	1954	12
50 mm (1.97 in): Days with 50 mm or more rain	40	5	2007	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1959	1
10 cm (3.9 in): Days with 10 cm or more snowfall	27	4	1959	4
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1959	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Lone Rock Tri Co AP 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).

Lone Rock Tri Co AP Threshold Days by Year

Key Facts for Lone Rock Tri Co AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related