Treherne Threshold Days by Year (CA005012930)

17 fixed thresholds counted per year at Treherne (CA005012930): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Treherne Thresholds

Treherne: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1896 with 25.
Treherne: days with a maximum temperature at or below 0 C (32 F) in 38 years, most in 1909 with 148.
Treherne: nights with a minimum temperature at or below 0 C (32 F) in 38 years, most in 1907 with 239.
Treherne: nights with a minimum temperature at or below -10 C (14 F) in 38 years, most in 1907 with 144.
17 fixed thresholds have at least one qualifying day at Treherne.

Days at or above 30 C (86 F)

37 years with a qualifying day

Days per year at Treherne with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 33 in 1933.

Days at or above 30 C (86 F) per year at Treherne
Year	Days	Decade average
1896	2	7
1897	13	7
1898	9	7
1899	4	7
1900	13	8.8
1901	11	8.8
1902	13	8.8
1903	8	8.8
1905	3	8.8
1906	10	8.8
1907	2	8.8
1908	10	8.8
1909	9	8.8
1910	22	15.9
1911	6	15.9
1912	8	15.9
1913	15	15.9
1914	25	15.9
1915	13	15.9
1916	12	15.9
1917	23	15.9
1918	8	15.9
1919	27	15.9
1920	16	13.1
1921	15	13.1
1922	13	13.1
1923	19	13.1
1924	8	13.1
1925	12	13.1
1926	11	13.1
1927	7	13.1
1928	8	13.1
1929	22	13.1
1930	26	28.8
1932	28	28.8
1933	33	28.8
1934	28	28.8

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

First to last qualifying date each year at Treherne
Year	First date	Last date
1896	1896-07-01	1896-07-11
1897	1897-05-04	1897-09-22
1898	1898-06-18	1898-08-19
1899	1899-06-18	1899-07-11
1900	1900-05-12	1900-08-19
1901	1901-05-16	1901-09-03
1902	1902-07-04	1902-09-25
1903	1903-06-04	1903-08-20
1905	1905-06-03	1905-09-29
1906	1906-07-11	1906-09-09
1907	1907-06-21	1907-07-12
1908	1908-06-26	1908-09-16
1909	1909-06-18	1909-10-06
1910	1910-05-27	1910-08-20
1911	1911-05-17	1911-08-14
1912	1912-06-22	1912-07-01
1913	1913-05-27	1913-09-04
1914	1914-06-02	1914-09-19
1915	1915-07-12	1915-09-05
1916	1916-07-05	1916-08-18
1917	1917-05-15	1917-09-23
1918	1918-05-04	1918-08-03
1919	1919-05-24	1919-08-19
1920	1920-06-13	1920-10-07
1921	1921-06-17	1921-09-01
1922	1922-06-03	1922-10-01
1923	1923-05-26	1923-09-21
1924	1924-07-04	1924-08-27
1925	1925-05-19	1925-09-02
1926	1926-04-29	1926-08-01
1927	1927-07-26	1927-09-13
1928	1928-05-21	1928-09-06
1929	1929-06-15	1929-09-01
1930	1930-05-03	1930-09-10
1932	1932-05-18	1932-09-08
1933	1933-06-01	1933-08-20
1934	1934-05-05	1934-09-13

Every Fixed Threshold

Fixed thresholds at Treherne
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	37	33	1933	28
35 C (95 F): Days	24	11	1933	4
40 C (104 F): Days	1	1	1900	1
90 F (32.2 C): Days	36	18	1933	17
100 F (37.8 C): Days	6	3	1910	1
0 C (32 F): Ice days (max	38	148	1909	96
0 C (32 F): Frost days (min	38	239	1907	183
-10 C (14 F): Days with min	38	144	1907	98
-20 C (-4 F): Days with min	38	83	1906	40
-30 C (-22 F): Days with min	38	34	1917	7
-40 C (-40 F): Days with min	12	4	1899	2
20 C (68 F): Tropical nights (min	25	7	1933	3
10 mm (0.39 in): Days with 10 mm or more rain	39	25	1896	22
25 mm (0.98 in): Days with 25 mm or more rain	35	11	1977	11
50 mm (1.97 in): Days with 50 mm or more rain	14	3	1900	1
10 cm (3.9 in): Days with 10 cm or more snowfall	36	9	1916	1
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	1911	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Treherne 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).

Treherne Threshold Days by Year (CA005012930)

Key Facts for Treherne Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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