Tremonton Threshold Days by Year (USC00428817)

17 fixed thresholds counted per year at Tremonton (USC00428817): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tremonton Thresholds

Tremonton: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 2001 with 94.
Tremonton: days with a maximum temperature at or above 90 F (32.2 C) in 40 years, most in 1942 with 66.
Tremonton: days with a maximum temperature at or below 0 C (32 F) in 40 years, most in 1985 with 73.
Tremonton: nights with a minimum temperature at or below 0 C (32 F) in 40 years, most in 1916 with 181.
17 fixed thresholds have at least one qualifying day at Tremonton.

Days at or above 30 C (86 F)

40 years with a qualifying day

Days per year at Tremonton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 94 in 2001.

Days at or above 30 C (86 F) per year at Tremonton
Year	Days	Decade average
1915	59	62.3
1916	61	62.3
1917	64	62.3
1918	65	62.3
1920	65	57
1925	51	57
1927	55	57
1933	71	78.8
1934	81	78.8
1935	81	78.8
1936	83	78.8
1937	81	78.8
1938	76	78.8
1940	76	69.7
1941	57	69.7
1942	76	69.7
1980	54	58
1981	77	58
1982	52	58
1983	47	58
1984	51	58
1985	60	58
1986	65	58
1987	46	58
1988	77	58
1989	51	58
1990	68	59.8
1991	62	59.8
1992	59	59.8
1993	28	59.8
1994	78	59.8
1995	55	59.8
1996	70	59.8
1997	51	59.8
1998	63	59.8
1999	64	59.8
2000	79	84
2001	94	84
2002	79	84
2003	84	84

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

First to last qualifying date each year at Tremonton
Year	First date	Last date
1915	1915-06-17	1915-09-24
1916	1916-06-17	1916-10-01
1917	1917-06-17	1917-09-10
1918	1918-06-06	1918-09-21
1920	1920-06-07	1920-09-21
1925	1925-06-19	1925-09-16
1927	1927-05-15	1927-10-19
1933	1933-05-30	1933-09-20
1934	1934-05-06	1934-09-18
1935	1935-06-08	1935-09-22
1936	1936-05-12	1936-09-22
1937	1937-05-17	1937-09-19
1938	1938-05-26	1938-09-29
1940	1940-05-24	1940-09-11
1941	1941-05-11	1941-09-17
1942	1942-06-08	1942-09-08
1980	1980-06-10	1980-09-19
1981	1981-06-21	1981-09-20
1982	1982-05-27	1982-09-10
1983	1983-05-28	1983-09-08
1984	1984-05-30	1984-09-20
1985	1985-06-08	1985-09-02
1986	1986-05-27	1986-09-09
1987	1987-05-15	1987-09-13
1988	1988-05-27	1988-09-10
1989	1989-06-16	1989-09-06
1990	1990-06-10	1990-09-16
1991	1991-06-12	1991-09-06
1992	1992-06-11	1992-10-03
1993	1993-06-21	1993-09-12
1994	1994-05-12	1994-09-21
1995	1995-06-13	1995-09-17
1996	1996-05-14	1996-09-11
1997	1997-06-01	1997-09-15
1998	1998-06-30	1998-09-19
1999	1999-05-24	1999-08-30
2000	2000-05-29	2000-09-18
2001	2001-05-14	2001-10-02
2002	2002-05-20	2002-09-06
2003	2003-05-23	2003-09-30

Every Fixed Threshold

Fixed thresholds at Tremonton
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	40	94	2001	84
35 C (95 F): Days	39	45	1940	33
40 C (104 F): Days	4	2	1940	2
90 F (32.2 C): Days	40	66	1942	61
100 F (37.8 C): Days	21	18	1940	16
0 C (32 F): Ice days (max	40	73	1985	15
0 C (32 F): Frost days (min	40	181	1916	123
-10 C (14 F): Days with min	40	73	1985	9
-20 C (-4 F): Days with min	23	17	1937	2
-30 C (-22 F): Days with min	1	1	1933	1
20 C (68 F): Tropical nights (min	29	12	2002	12
25 C (77 F): Days with min	1	1	1933	1
10 mm (0.39 in): Days with 10 mm or more rain	30	25	1983	9
25 mm (0.98 in): Days with 25 mm or more rain	20	4	1982	4
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1985	1
10 cm (3.9 in): Days with 10 cm or more snowfall	27	6	2003	7
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1996	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

Data for Tremonton 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).

Tremonton Threshold Days by Year (USC00428817)

Key Facts for Tremonton Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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