Princeville Threshold Days by Year (USC00117004)

18 fixed thresholds counted per year at Princeville (USC00117004): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Princeville Thresholds

Princeville: days with 10 mm (0.39 in) or more of precipitation in 81 years, most in 1998 with 47.
Princeville: days with 25 mm (0.98 in) or more of precipitation in 81 years, most in 2011 with 17.
Princeville: days with 50 mm (1.97 in) or more of precipitation in 60 years, most in 1970 with 5.
Princeville: days with 10 cm (3.9 in) or more of snowfall in 60 years, most in 1957 with 5.
18 fixed thresholds have at least one qualifying day at Princeville.

Days at or above 30 C (86 F)

45 years with a qualifying day

Days per year at Princeville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 86 in 1983.

Days at or above 30 C (86 F) per year at Princeville
Year	Days	Decade average
1965	29	33.7
1968	38	33.7
1969	34	33.7
1970	29	41.7
1971	56	41.7
1972	46	41.7
1973	31	41.7
1974	31	41.7
1975	40	41.7
1976	31	41.7
1977	47	41.7
1978	62	41.7
1979	44	41.7
1980	64	47.9
1981	20	47.9
1982	38	47.9
1983	86	47.9
1984	52	47.9
1985	36	47.9
1986	32	47.9
1987	49	47.9
1988	72	47.9
1989	30	47.9
1990	25	33.3
1991	46	33.3
1992	23	33.3
1993	16	33.3
1994	38	33.3
1995	48	33.3
1996	37	33.3
1997	33	33.3
1998	36	33.3
1999	31	33.3
2000	29	49.3
2001	54	49.3
2002	64	49.3
2003	47	49.3
2004	34	49.3
2005	83	49.3
2006	57	49.3
2007	63	49.3
2008	42	49.3
2009	20	49.3
2010	70	65
2011	60	65

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

First to last qualifying date each year at Princeville
Year	First date	Last date
1965	1965-05-07	1965-09-19
1968	1968-06-04	1968-09-03
1969	1969-05-28	1969-10-05
1970	1970-04-28	1970-09-21
1971	1971-05-17	1971-10-02
1972	1972-05-19	1972-09-21
1973	1973-06-09	1973-09-03
1974	1974-07-01	1974-08-27
1975	1975-05-18	1975-09-03
1976	1976-06-08	1976-10-03
1977	1977-05-15	1977-08-31
1978	1978-05-25	1978-09-20
1979	1979-05-08	1979-10-21
1980	1980-04-22	1980-09-22
1981	1981-04-27	1981-09-30
1982	1982-05-16	1982-10-05
1983	1983-06-09	1983-10-02
1984	1984-05-19	1984-09-25
1985	1985-04-19	1985-09-20
1986	1986-03-30	1986-09-26
1987	1987-04-21	1987-09-06
1988	1988-05-08	1988-09-28
1989	1989-04-27	1989-10-15
1990	1990-06-13	1990-09-28
1991	1991-05-15	1991-09-15
1992	1992-05-02	1992-08-26
1993	1993-06-18	1993-08-31
1994	1994-04-26	1994-10-01
1995	1995-06-08	1995-09-06
1996	1996-05-18	1996-08-23
1997	1997-05-18	1997-10-06
1998	1998-05-14	1998-09-27
1999	1999-05-29	1999-09-05
2000	2000-05-18	2000-09-20
2001	2001-05-01	2001-09-13
2002	2002-04-16	2002-10-02
2003	2003-04-15	2003-10-21
2004	2004-04-17	2004-09-24
2005	2005-05-09	2005-10-06
2006	2006-04-14	2006-10-04
2007	2007-04-30	2007-10-09
2008	2008-05-07	2008-09-03
2009	2009-05-22	2009-08-16
2010	2010-04-15	2010-09-24
2011	2011-04-04	2011-09-13

Every Fixed Threshold

Fixed thresholds at Princeville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	45	86	1983	60
35 C (95 F): Days	34	31	1983	17
40 C (104 F): Days	2	2	1988	2
90 F (32.2 C): Days	45	68	1983	36
100 F (37.8 C): Days	7	12	1988	1
0 C (32 F): Ice days (max	45	73	1978	37
0 C (32 F): Frost days (min	43	180	1988	120
-10 C (14 F): Days with min	43	74	1985	27
-20 C (-4 F): Days with min	43	28	1985	9
-30 C (-22 F): Days with min	9	4	1994	2
20 C (68 F): Tropical nights (min	43	32	1968	30
25 C (77 F): Days with min	3	2	1974	1
10 mm (0.39 in): Days with 10 mm or more rain	81	47	1998	23
25 mm (0.98 in): Days with 25 mm or more rain	81	17	2011	7
50 mm (1.97 in): Days with 50 mm or more rain	60	5	1970	1
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1951	1
10 cm (3.9 in): Days with 10 cm or more snowfall	60	5	1957	3
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1975	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

Data for Princeville 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).

Princeville Threshold Days by Year (USC00117004)

Key Facts for Princeville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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