Robeline Threshold Days by Year (USC00167905)

17 fixed thresholds counted per year at Robeline (USC00167905): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Robeline Thresholds

Robeline: days with 10 mm (0.39 in) or more of precipitation in 54 years, most in 1946 with 55.
Robeline: days with 25 mm (0.98 in) or more of precipitation in 54 years, most in 1946 with 28.
Robeline: days with 50 mm (1.97 in) or more of precipitation in 54 years, most in 1955 with 12.
Robeline: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 1915 with 162.
17 fixed thresholds have at least one qualifying day at Robeline.

Days at or above 30 C (86 F)

45 years with a qualifying day

Days per year at Robeline with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 162 in 1915.

Days at or above 30 C (86 F) per year at Robeline
Year	Days	Decade average
1897	149	142.5
1898	136	142.5
1901	123	132
1902	118	132
1904	133	132
1905	129	132
1908	141	132
1909	148	132
1910	153	143.3
1911	156	143.3
1912	148	143.3
1913	132	143.3
1914	145	143.3
1915	162	143.3
1917	128	143.3
1919	122	143.3
1920	142	137.7
1924	139	137.7
1926	139	137.7
1927	147	137.7
1928	133	137.7
1929	126	137.7
1930	126	145.3
1931	145	145.3
1932	144	145.3
1933	155	145.3
1934	153	145.3
1935	146	145.3
1936	144	145.3
1937	147	145.3
1938	145	145.3
1939	148	145.3
1940	104	136.5
1941	147	136.5
1942	124	136.5
1943	144	136.5
1944	139	136.5
1945	133	136.5
1946	131	136.5
1947	146	136.5
1948	149	136.5
1949	148	136.5
1950	121	132.3
1951	138	132.3
1952	138	132.3

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

First to last qualifying date each year at Robeline
Year	First date	Last date
1897	1897-03-21	1897-10-25
1898	1898-03-15	1898-10-11
1901	1901-04-24	1901-09-24
1902	1902-04-30	1902-10-26
1904	1904-02-08	1904-10-12
1905	1905-04-27	1905-10-19
1908	1908-03-07	1908-10-21
1909	1909-03-07	1909-12-10
1910	1910-03-22	1910-10-27
1911	1911-03-10	1911-11-11
1912	1912-04-14	1912-11-01
1913	1913-04-01	1913-11-19
1914	1914-01-19	1914-11-07
1915	1915-04-11	1915-11-13
1917	1917-02-26	1917-10-19
1919	1919-04-24	1919-10-30
1920	1920-04-17	1920-10-21
1924	1924-04-14	1924-10-20
1926	1926-05-09	1926-10-19
1927	1927-04-09	1927-11-10
1928	1928-03-26	1928-10-13
1929	1929-03-23	1929-10-30
1930	1930-04-03	1930-10-16
1931	1931-04-16	1931-10-27
1932	1932-02-28	1932-10-25
1933	1933-03-14	1933-10-22
1934	1934-04-11	1934-11-09
1935	1935-03-20	1935-11-10
1936	1936-03-25	1936-11-02
1937	1937-04-16	1937-10-31
1938	1938-03-21	1938-10-31
1939	1939-04-02	1939-10-27
1940	1940-04-03	1940-10-24
1941	1941-04-12	1941-10-24
1942	1942-04-26	1942-11-02
1943	1943-01-24	1943-10-21
1944	1944-02-06	1944-10-30
1945	1945-03-15	1945-11-01
1946	1946-03-29	1946-10-28
1947	1947-04-06	1947-10-29
1948	1948-04-07	1948-11-04
1949	1949-04-09	1949-10-21
1950	1950-05-02	1950-10-16
1951	1951-05-01	1951-10-31
1952	1952-04-30	1952-10-27

Every Fixed Threshold

Fixed thresholds at Robeline
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	45	162	1915	138
35 C (95 F): Days	45	85	1914	65
40 C (104 F): Days	15	9	1951	9
90 F (32.2 C): Days	45	131	1915	117
100 F (37.8 C): Days	33	37	1934	6
110 F (43.3 C): Days	1	1	1909	1
0 C (32 F): Ice days (max	16	4	1897	3
0 C (32 F): Frost days (min	41	73	1912	22
-10 C (14 F): Days with min	17	4	1930	3
20 C (68 F): Tropical nights (min	41	118	1941	85
25 C (77 F): Days with min	28	8	1950	1
10 mm (0.39 in): Days with 10 mm or more rain	54	55	1946	41
25 mm (0.98 in): Days with 25 mm or more rain	54	28	1946	16
50 mm (1.97 in): Days with 50 mm or more rain	54	12	1955	3
100 mm (3.94 in): Days with 100 mm or more rain	23	3	1913	2
200 mm (7.87 in): Days with 200 mm or more rain	1	0	n/a	2
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1940	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Robeline 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).

Robeline Threshold Days by Year (USC00167905)

Key Facts for Robeline Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related