Seminoe Dam Threshold Days by Year (USC00488070)

15 fixed thresholds counted per year at Seminoe Dam (USC00488070): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Seminoe Dam Thresholds

Seminoe Dam: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 2003 with 15.
Seminoe Dam: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 2003 with 46.
Seminoe Dam: days with a maximum temperature at or below 0 C (32 F) in 36 years, most in 1984 with 98.
Seminoe Dam: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 1984 with 209.
15 fixed thresholds have at least one qualifying day at Seminoe Dam.

Days at or above 30 C (86 F)

36 years with a qualifying day

Days per year at Seminoe Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 2003.

Days at or above 30 C (86 F) per year at Seminoe Dam
Year	Days	Decade average
1949	7	7
1950	5	18.6
1951	20	18.6
1952	13	18.6
1953	18	18.6
1954	34	18.6
1955	25	18.6
1958	14	18.6
1959	20	18.6
1960	25	21.3
1961	20	21.3
1962	16	21.3
1963	20	21.3
1965	11	21.3
1966	29	21.3
1967	14	21.3
1968	17	21.3
1969	40	21.3
1970	30	23.7
1971	34	23.7
1972	12	23.7
1976	20	23.7
1977	23	23.7
1978	19	23.7
1979	28	23.7
1980	20	21.3
1981	24	21.3
1982	30	21.3
1983	27	21.3
1984	15	21.3
1985	20	21.3
1986	19	21.3
1987	15	21.3
2003	46	29
2004	18	29
2005	23	29

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

First to last qualifying date each year at Seminoe Dam
Year	First date	Last date
1949	1949-07-02	1949-08-22
1950	1950-07-10	1950-09-05
1951	1951-07-05	1951-08-18
1952	1952-07-18	1952-09-11
1953	1953-06-16	1953-08-08
1954	1954-05-20	1954-09-01
1955	1955-06-23	1955-09-06
1958	1958-07-15	1958-09-07
1959	1959-06-12	1959-08-18
1960	1960-06-29	1960-08-15
1961	1961-06-21	1961-08-23
1962	1962-06-27	1962-09-06
1963	1963-06-27	1963-08-16
1965	1965-07-23	1965-08-13
1966	1966-06-28	1966-08-26
1967	1967-07-13	1967-08-25
1968	1968-06-19	1968-08-07
1969	1969-06-05	1969-08-28
1970	1970-06-23	1970-08-31
1971	1971-06-22	1971-08-28
1972	1972-07-08	1972-08-18
1976	1976-06-30	1976-09-05
1977	1977-06-04	1977-09-08
1978	1978-06-24	1978-09-08
1979	1979-06-26	1979-09-09
1980	1980-06-25	1980-09-06
1981	1981-06-25	1981-08-20
1982	1982-06-28	1982-09-04
1983	1983-06-23	1983-09-07
1984	1984-06-22	1984-08-19
1985	1985-06-08	1985-08-31
1986	1986-06-16	1986-08-19
1987	1987-06-27	1987-08-09
2003	2003-05-28	2003-08-27
2004	2004-06-07	2004-09-01
2005	2005-06-20	2005-08-29

Every Fixed Threshold

Fixed thresholds at Seminoe Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	36	46	2003	23
35 C (95 F): Days	8	12	2003	5
90 F (32.2 C): Days	33	34	2003	15
0 C (32 F): Ice days (max	36	98	1984	41
0 C (32 F): Frost days (min	35	209	1984	174
-10 C (14 F): Days with min	35	83	1951	38
-20 C (-4 F): Days with min	34	24	1949	4
-30 C (-22 F): Days with min	11	4	1963	2
20 C (68 F): Tropical nights (min	4	2	2003	2
25 C (77 F): Days with min	1	1	1985	1
10 mm (0.39 in): Days with 10 mm or more rain	43	15	2003	11
25 mm (0.98 in): Days with 25 mm or more rain	23	4	2003	3
50 mm (1.97 in): Days with 50 mm or more rain	4	1	1962	1
10 cm (3.9 in): Days with 10 cm or more snowfall	5	9	1949	3
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Seminoe Dam 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).

Seminoe Dam Threshold Days by Year (USC00488070)

Key Facts for Seminoe Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related