Waco Threshold Days by Year

16 fixed thresholds counted per year at Waco (USC00419421): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waco Thresholds

Waco: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1957 with 45.
Waco: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1919 with 18.
Waco: days with 50 mm (1.97 in) or more of precipitation in 47 years, most in 1902 with 9.
Waco: days with a maximum temperature at or above 30 C (86 F) in 38 years, most in 1904 with 171.
16 fixed thresholds have at least one qualifying day at Waco.

Days at or above 30 C (86 F)

38 years with a qualifying day

Days per year at Waco with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 171 in 1904.

Days at or above 30 C (86 F) per year at Waco
Year	Days	Decade average
1903	125	145.1
1904	171	145.1
1905	144	145.1
1906	146	145.1
1907	145	145.1
1908	141	145.1
1909	144	145.1
1910	158	135.4
1911	154	135.4
1912	144	135.4
1913	128	135.4
1914	122	135.4
1915	121	135.4
1916	147	135.4
1917	137	135.4
1918	126	135.4
1919	117	135.4
1920	135	139.9
1921	141	139.9
1922	124	139.9
1923	142	139.9
1924	106	139.9
1925	164	139.9
1926	138	139.9
1927	144	139.9
1928	156	139.9
1929	149	139.9
1930	135	146.8
1931	148	146.8
1932	130	146.8
1933	164	146.8
1934	164	146.8
1935	124	146.8
1936	139	146.8
1937	156	146.8
1938	152	146.8
1939	156	146.8
1940	137	137

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

First to last qualifying date each year at Waco
Year	First date	Last date
1903	1903-04-02	1903-11-16
1904	1904-02-26	1904-12-09
1905	1905-03-28	1905-10-19
1906	1906-03-27	1906-11-17
1907	1907-03-15	1907-10-08
1908	1908-03-17	1908-11-25
1909	1909-03-03	1909-11-13
1910	1910-03-22	1910-11-26
1911	1911-01-30	1911-11-12
1912	1912-04-26	1912-10-12
1913	1913-03-31	1913-10-11
1914	1914-04-16	1914-10-18
1915	1915-04-30	1915-11-09
1916	1916-03-07	1916-10-16
1917	1917-02-26	1917-10-29
1918	1918-02-26	1918-10-20
1919	1919-04-12	1919-10-27
1920	1920-04-16	1920-10-14
1921	1921-04-25	1921-11-17
1922	1922-04-13	1922-10-15
1923	1923-04-07	1923-10-03
1924	1924-04-14	1924-10-12
1925	1925-03-25	1925-10-23
1926	1926-05-08	1926-10-19
1927	1927-04-03	1927-10-20
1928	1928-03-12	1928-10-15
1929	1929-03-06	1929-11-01
1930	1930-04-07	1930-10-11
1931	1931-05-15	1931-10-27
1932	1932-03-21	1932-10-24
1933	1933-04-10	1933-10-25
1934	1934-04-10	1934-11-01
1935	1935-03-21	1935-10-17
1936	1936-03-15	1936-10-22
1937	1937-04-16	1937-10-31
1938	1938-03-05	1938-11-17
1939	1939-04-01	1939-10-28
1940	1940-03-01	1940-10-23

Every Fixed Threshold

Fixed thresholds at Waco
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	38	171	1904	137
35 C (95 F): Days	38	108	1911	45
40 C (104 F): Days	17	10	1909	4
90 F (32.2 C): Days	38	144	1925	97
100 F (37.8 C): Days	36	50	1925	8
110 F (43.3 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	23	6	1905	6
0 C (32 F): Frost days (min	37	46	1940	46
-10 C (14 F): Days with min	14	6	1940	6
20 C (68 F): Tropical nights (min	37	162	1925	75
25 C (77 F): Days with min	37	83	1925	1
10 mm (0.39 in): Days with 10 mm or more rain	50	45	1957	45
25 mm (0.98 in): Days with 25 mm or more rain	50	18	1919	16
50 mm (1.97 in): Days with 50 mm or more rain	47	9	1902	5
100 mm (3.94 in): Days with 100 mm or more rain	11	2	1913	1
10 cm (3.9 in): Days with 10 cm or more snowfall	2	1	1937	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for Waco 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Waco Threshold Days by Year

Key Facts for Waco Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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