Bowman Dam Threshold Days by Year

16 fixed thresholds counted per year at Bowman Dam (USC00041018): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bowman Dam Thresholds

Bowman Dam: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1983 with 78.
Bowman Dam: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 1983 with 45.
Bowman Dam: days with 50 mm (1.97 in) or more of precipitation in 68 years, most in 1940 with 20.
Bowman Dam: nights with a minimum temperature at or below 0 C (32 F) in 60 years, most in 1926 with 200.
16 fixed thresholds have at least one qualifying day at Bowman Dam.

Days at or above 30 C (86 F)

58 years with a qualifying day

Days per year at Bowman Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 1926.

Days at or above 30 C (86 F) per year at Bowman Dam
Year	Days	Decade average
1902	25	25
1926	92	33
1927	3	33
1928	26	33
1929	11	33
1930	4	15.8
1931	18	15.8
1932	7	15.8
1933	43	15.8
1934	17	15.8
1935	16	15.8
1936	14	15.8
1938	9	15.8
1939	14	15.8
1940	9	8.8
1941	3	8.8
1942	18	8.8
1946	5	8.8
1950	19	12.6
1951	14	12.6
1952	7	12.6
1953	8	12.6
1954	7	12.6
1955	20	12.6
1956	13	12.6
1957	6	12.6
1958	8	12.6
1959	24	12.6
1960	20	11.6
1961	19	11.6
1962	4	11.6
1964	7	11.6
1965	1	11.6
1966	17	11.6
1967	11	11.6
1968	14	11.6
1969	11	11.6
1970	15	12.8
1971	8	12.8
1972	18	12.8
1973	14	12.8
1974	6	12.8
1975	8	12.8
1976	6	12.8
1977	16	12.8
1978	20	12.8
1979	17	12.8
1980	9	15.4
1981	22	15.4
1983	2	15.4
1984	17	15.4
1985	20	15.4
1986	16	15.4
1987	22	15.4
2007	21	21
2015	7	4.5
2016	2	4.5
2026	9	9

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

First to last qualifying date each year at Bowman Dam
Year	First date	Last date
1902	1902-06-17	1902-09-12
1926	1926-04-24	1926-10-26
1927	1927-07-12	1927-07-22
1928	1928-07-13	1928-09-22
1929	1929-06-22	1929-09-17
1930	1930-06-14	1930-07-15
1931	1931-07-03	1931-08-23
1932	1932-08-03	1932-09-15
1933	1933-06-11	1933-09-01
1934	1934-06-29	1934-09-15
1935	1935-06-04	1935-09-17
1936	1936-06-21	1936-09-23
1938	1938-07-18	1938-09-15
1939	1939-07-12	1939-08-18
1940	1940-06-13	1940-08-13
1941	1941-07-07	1941-07-22
1942	1942-06-30	1942-08-23
1946	1946-07-19	1946-08-09
1950	1950-06-28	1950-08-31
1951	1951-05-26	1951-09-15
1952	1952-07-07	1952-07-28
1953	1953-08-11	1953-09-15
1954	1954-06-21	1954-08-19
1955	1955-06-08	1955-09-07
1956	1956-06-26	1956-09-02
1957	1957-06-27	1957-09-09
1958	1958-07-27	1958-09-06
1959	1959-06-18	1959-08-13
1960	1960-06-03	1960-08-19
1961	1961-06-14	1961-08-04
1962	1962-07-27	1962-09-04
1964	1964-07-11	1964-08-23
1965	1965-08-06	1965-08-06
1966	1966-06-14	1966-09-05
1967	1967-06-29	1967-08-31
1968	1968-06-24	1968-09-01
1969	1969-07-20	1969-09-06
1970	1970-06-20	1970-08-13
1971	1971-07-16	1971-09-14
1972	1972-06-29	1972-08-10
1973	1973-06-26	1973-09-05
1974	1974-06-28	1974-09-26
1975	1975-07-21	1975-09-08
1976	1976-07-25	1976-09-02
1977	1977-06-05	1977-09-08
1978	1978-07-21	1978-10-11
1979	1979-07-13	1979-10-04
1980	1980-07-21	1980-10-03
1981	1981-06-04	1981-09-14
1983	1983-08-06	1983-08-07
1984	1984-05-29	1984-09-18
1985	1985-06-12	1985-08-26
1986	1986-06-24	1986-09-07
1987	1987-06-13	1987-10-06
2007	2007-07-06	2007-09-11
2015	2015-08-16	2015-09-12
2016	2016-07-13	2016-07-15
2026	2026-06-17	2026-08-21

Every Fixed Threshold

Fixed thresholds at Bowman Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	58	92	1926	9
35 C (95 F): Days	11	21	1926	1
90 F (32.2 C): Days	42	56	1926	4
100 F (37.8 C): Days	2	4	1926	4
0 C (32 F): Ice days (max	56	22	1971	2
0 C (32 F): Frost days (min	60	200	1926	21
-10 C (14 F): Days with min	53	25	1926	1
20 C (68 F): Tropical nights (min	19	7	1933	1
10 mm (0.39 in): Days with 10 mm or more rain	68	78	1983	12
25 mm (0.98 in): Days with 25 mm or more rain	68	45	1983	9
50 mm (1.97 in): Days with 50 mm or more rain	68	20	1940	7
100 mm (3.94 in): Days with 100 mm or more rain	48	5	1940	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	58	37	1967	2
25 cm (9.8 in): Days with 25 cm or more snowfall	58	13	1964	2
50 cm (19.7 in): Days with 50 cm or more snowfall	34	5	1985	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Bowman 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Bowman Dam Threshold Days by Year

Key Facts for Bowman Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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