Rothsay Threshold Days by Year (USC00217149)

18 fixed thresholds counted per year at Rothsay (USC00217149): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rothsay Thresholds

Rothsay: nights with a minimum temperature at or below 0 C (32 F) in 54 years, most in 1972 with 192.
Rothsay: nights with a minimum temperature at or below -10 C (14 F) in 54 years, most in 1970 with 117.
Rothsay: nights with a minimum temperature at or below -20 C (-4 F) in 54 years, most in 1972 with 67.
Rothsay: nights with a minimum temperature at or above 20 C (68 F) in 54 years, most in 1983 with 20.
18 fixed thresholds have at least one qualifying day at Rothsay.

Days at or above 30 C (86 F)

50 years with a qualifying day

Days per year at Rothsay with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 65 in 1970.

Days at or above 30 C (86 F) per year at Rothsay
Year	Days	Decade average
1960	31	25.7
1961	36	25.7
1962	15	25.7
1963	23	25.7
1964	31	25.7
1965	13	25.7
1967	21	25.7
1968	27	25.7
1969	34	25.7
1970	65	38.2
1971	23	38.2
1972	35	38.2
1973	34	38.2
1974	35	38.2
1975	37	38.2
1976	63	38.2
1977	28	38.2
1978	39	38.2
1979	23	38.2
1980	44	31
1981	25	31
1982	29	31
1983	44	31
1986	13	31
1990	19	14.4
1991	22	14.4
1992	11	14.4
1993	5	14.4
1994	7	14.4
1995	20	14.4
1996	14	14.4
1997	12	14.4
1998	16	14.4
1999	18	14.4
2001	31	19.1
2002	30	19.1
2004	8	19.1
2005	16	19.1
2006	21	19.1
2007	25	19.1
2009	3	19.1
2011	14	16.7
2012	31	16.7
2013	24	16.7
2014	6	16.7
2015	17	16.7
2016	8	16.7
2020	18	22.7
2021	41	22.7
2024	9	22.7

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

First to last qualifying date each year at Rothsay
Year	First date	Last date
1960	1960-07-15	1960-09-06
1961	1961-05-31	1961-10-06
1962	1962-04-24	1962-08-31
1963	1963-06-04	1963-10-05
1964	1964-05-18	1964-09-09
1965	1965-06-19	1965-08-14
1967	1967-06-29	1967-09-07
1968	1968-06-03	1968-09-15
1969	1969-05-27	1969-09-15
1970	1970-05-18	1970-10-06
1971	1971-05-14	1971-09-04
1972	1972-05-16	1972-09-20
1973	1973-06-01	1973-08-30
1974	1974-06-03	1974-09-27
1975	1975-06-24	1975-10-07
1976	1976-06-04	1976-10-01
1977	1977-04-10	1977-09-08
1978	1978-05-25	1978-09-11
1979	1979-06-13	1979-09-27
1980	1980-04-20	1980-09-09
1981	1981-07-05	1981-09-13
1982	1982-06-24	1982-09-10
1983	1983-06-10	1983-09-27
1986	1986-05-29	1986-08-15
1990	1990-04-22	1990-09-12
1991	1991-05-12	1991-09-02
1992	1992-04-30	1992-10-01
1993	1993-08-10	1993-10-06
1994	1994-05-18	1994-09-10
1995	1995-06-15	1995-09-04
1996	1996-06-10	1996-09-05
1997	1997-06-01	1997-08-26
1998	1998-07-10	1998-09-19
1999	1999-05-29	1999-08-27
2001	2001-05-14	2001-09-05
2002	2002-05-30	2002-09-16
2004	2004-04-28	2004-09-19
2005	2005-06-19	2005-09-10
2006	2006-05-23	2006-08-09
2007	2007-05-13	2007-09-23
2009	2009-06-26	2009-08-14
2011	2011-06-06	2011-09-28
2012	2012-05-14	2012-09-10
2013	2013-05-13	2013-09-07
2014	2014-05-24	2014-08-16
2015	2015-06-09	2015-10-11
2016	2016-05-05	2016-07-25
2020	2020-06-01	2020-08-23
2021	2021-05-01	2021-09-28
2024	2024-06-12	2024-09-27

Every Fixed Threshold

Fixed thresholds at Rothsay
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	50	65	1970	9
35 C (95 F): Days	31	17	1976	3
40 C (104 F): Days	1	1	1976	1
90 F (32.2 C): Days	50	40	1976	2
100 F (37.8 C): Days	7	6	1976	2
0 C (32 F): Ice days (max	50	122	1996	62
0 C (32 F): Frost days (min	54	192	1972	137
-10 C (14 F): Days with min	54	117	1970	55
-20 C (-4 F): Days with min	54	67	1972	19
-30 C (-22 F): Days with min	48	17	1972	8
20 C (68 F): Tropical nights (min	54	20	1983	8
25 C (77 F): Days with min	5	2	1975	1
10 mm (0.39 in): Days with 10 mm or more rain	49	33	1977	1
25 mm (0.98 in): Days with 25 mm or more rain	48	10	1986	1
50 mm (1.97 in): Days with 50 mm or more rain	28	4	2002	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1972	1
10 cm (3.9 in): Days with 10 cm or more snowfall	37	8	1997	1
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	1975	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

Data for Rothsay 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Rothsay Threshold Days by Year (USC00217149)

Key Facts for Rothsay Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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