Guymon Threshold Days by Year (USC00343835)

16 fixed thresholds counted per year at Guymon (USC00343835): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Guymon Thresholds

Guymon: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1949 with 24.
Guymon: days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 1944 with 11.
Guymon: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 1956 with 138.
Guymon: days with a maximum temperature at or above 35 C (95 F) in 27 years, most in 1956 with 69.
16 fixed thresholds have at least one qualifying day at Guymon.

Days at or above 30 C (86 F)

27 years with a qualifying day

Days per year at Guymon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 138 in 1956.

Days at or above 30 C (86 F) per year at Guymon
Year	Days	Decade average
1941	87	99.2
1942	94	99.2
1943	109	99.2
1944	87	99.2
1945	105	99.2
1946	108	99.2
1947	104	99.2
1948	115	99.2
1949	84	99.2
1950	81	109.7
1951	88	109.7
1952	120	109.7
1953	124	109.7
1954	122	109.7
1955	119	109.7
1956	138	109.7
1957	89	109.7
1958	106	109.7
1959	110	109.7
1960	98	106.3
1961	92	106.3
1962	114	106.3
1963	131	106.3
1964	112	106.3
1965	91	106.3
2007	99	104.5
2008	110	104.5

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

First to last qualifying date each year at Guymon
Year	First date	Last date
1941	1941-05-13	1941-10-13
1942	1942-04-04	1942-10-08
1943	1943-03-29	1943-10-28
1944	1944-05-14	1944-09-30
1945	1945-04-09	1945-11-05
1946	1946-03-31	1946-10-21
1947	1947-05-03	1947-10-21
1948	1948-04-10	1948-10-15
1949	1949-04-24	1949-10-08
1950	1950-03-25	1950-10-31
1951	1951-04-28	1951-10-15
1952	1952-04-07	1952-11-01
1953	1953-04-21	1953-10-17
1954	1954-04-05	1954-10-13
1955	1955-04-15	1955-12-24
1956	1956-03-25	1956-10-13
1957	1957-04-18	1957-10-05
1958	1958-05-11	1958-10-19
1959	1959-04-24	1959-10-25
1960	1960-03-27	1960-10-09
1961	1961-04-18	1961-10-22
1962	1962-02-11	1962-10-14
1963	1963-02-01	1963-10-10
1964	1964-04-15	1964-10-16
1965	1965-04-20	1965-10-10
2007	2007-05-14	2007-10-20
2008	2008-04-16	2008-10-10

Every Fixed Threshold

Fixed thresholds at Guymon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	27	138	1956	110
35 C (95 F): Days	27	69	1956	46
40 C (104 F): Days	19	10	1953	4
90 F (32.2 C): Days	27	116	1956	72
100 F (37.8 C): Days	27	28	1946	15
0 C (32 F): Ice days (max	27	25	2007	4
0 C (32 F): Frost days (min	27	161	2008	161
-10 C (14 F): Days with min	27	33	2007	33
-20 C (-4 F): Days with min	12	5	1948	5
20 C (68 F): Tropical nights (min	27	39	1964	8
25 C (77 F): Days with min	3	3	1953	1
10 mm (0.39 in): Days with 10 mm or more rain	30	24	1949	10
25 mm (0.98 in): Days with 25 mm or more rain	28	11	1944	5
50 mm (1.97 in): Days with 50 mm or more rain	18	3	1942	2
10 cm (3.9 in): Days with 10 cm or more snowfall	14	3	1964	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	0	n/a	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

Data for Guymon 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).

Guymon Threshold Days by Year (USC00343835)

Key Facts for Guymon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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