Bay City Wtr Wks Threshold Days by Year (USC00410569)

15 fixed thresholds counted per year at Bay City Wtr Wks (USC00410569): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bay City Wtr Wks Thresholds

Bay City Wtr Wks: days with 10 mm (0.39 in) or more of precipitation in 77 years, most in 2007 with 48.
Bay City Wtr Wks: days with 25 mm (0.98 in) or more of precipitation in 77 years, most in 2024 with 24.
Bay City Wtr Wks: days with 50 mm (1.97 in) or more of precipitation in 76 years, most in 1992 with 11.
Bay City Wtr Wks: nights with a minimum temperature at or above 20 C (68 F) in 73 years, most in 2000 with 171.
15 fixed thresholds have at least one qualifying day at Bay City Wtr Wks.

Days at or above 30 C (86 F)

70 years with a qualifying day

Days per year at Bay City Wtr Wks with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 174 in 1950.

Days at or above 30 C (86 F) per year at Bay City Wtr Wks
Year	Days	Decade average
1915	87	87
1943	135	134.4
1944	132	134.4
1945	136	134.4
1948	143	134.4
1949	126	134.4
1950	174	151.7
1951	134	151.7
1952	133	151.7
1953	166	151.7
1954	158	151.7
1955	154	151.7
1956	171	151.7
1957	134	151.7
1958	152	151.7
1959	141	151.7
1960	140	145.1
1961	135	145.1
1962	155	145.1
1963	166	145.1
1964	139	145.1
1965	147	145.1
1966	135	145.1
1967	146	145.1
1968	136	145.1
1969	152	145.1
1970	118	131
1971	113	131
1972	157	131
1974	133	131
1978	147	131
1979	118	131
1980	133	127.5
1981	144	127.5
1982	113	127.5
1983	130	127.5
1984	122	127.5
1985	124	127.5
1986	127	127.5
1989	127	127.5
1990	135	132.1
1991	138	132.1
1992	124	132.1
1993	125	132.1
1994	127	132.1
1995	128	132.1
1997	119	132.1
1999	161	132.1
2000	148	140.8
2001	128	140.8
2002	141	140.8
2003	142	140.8
2004	153	140.8
2006	138	140.8
2007	132	140.8
2008	140	140.8
2009	145	140.8
2010	126	137
2011	150	137
2012	120	137
2013	136	137
2015	165	137
2017	139	137
2018	121	137
2019	139	137
2020	139	140
2021	123	140
2024	163	140
2025	167	140
2026	108	140

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

First to last qualifying date each year at Bay City Wtr Wks
Year	First date	Last date
1915	1915-05-13	1915-10-30
1943	1943-04-12	1943-10-31
1944	1944-04-14	1944-10-21
1945	1945-04-25	1945-11-13
1948	1948-04-01	1948-11-01
1949	1949-03-07	1949-11-30
1950	1950-02-27	1950-11-17
1951	1951-04-23	1951-11-22
1952	1952-05-05	1952-10-18
1953	1953-03-23	1953-10-22
1954	1954-02-28	1954-10-26
1955	1955-04-27	1955-11-14
1956	1956-03-04	1956-10-26
1957	1957-04-21	1957-10-13
1958	1958-04-04	1958-10-26
1959	1959-04-21	1959-11-05
1960	1960-04-27	1960-10-28
1961	1961-04-04	1961-11-01
1962	1962-02-10	1962-10-24
1963	1963-03-13	1963-11-08
1964	1964-04-28	1964-10-30
1965	1965-04-13	1965-10-24
1966	1966-04-02	1966-10-15
1967	1967-03-16	1967-10-25
1968	1968-04-15	1968-10-31
1969	1969-04-06	1969-11-13
1970	1970-05-19	1970-10-28
1971	1971-03-17	1971-11-03
1972	1972-03-18	1972-11-07
1974	1974-03-30	1974-10-20
1978	1978-03-01	1978-11-12
1979	1979-04-13	1979-10-29
1980	1980-03-11	1980-09-30
1981	1981-04-21	1981-10-23
1982	1982-04-06	1982-11-03
1983	1983-04-02	1983-10-21
1984	1984-03-28	1984-10-16
1985	1985-04-17	1985-10-25
1986	1986-04-22	1986-10-06
1989	1989-03-30	1989-11-08
1990	1990-05-13	1990-10-17
1991	1991-04-19	1991-10-29
1992	1992-05-13	1992-11-03
1993	1993-05-03	1993-10-19
1994	1994-05-08	1994-10-24
1995	1995-05-04	1995-10-27
1997	1997-05-26	1997-10-04
1999	1999-04-14	1999-10-17
2000	2000-03-27	2000-11-01
2001	2001-04-13	2001-10-12
2002	2002-04-24	2002-10-07
2003	2003-04-17	2003-10-29
2004	2004-03-19	2004-10-31
2006	2006-04-23	2006-10-22
2007	2007-05-04	2007-10-21
2008	2008-03-16	2008-10-16
2009	2009-04-11	2009-10-16
2010	2010-05-03	2010-11-03
2011	2011-04-12	2011-11-17
2012	2012-04-06	2012-10-26
2013	2013-05-18	2013-10-20
2015	2015-03-16	2015-10-28
2017	2017-04-04	2017-11-08
2018	2018-05-07	2018-11-08
2019	2019-04-10	2019-10-21
2020	2020-04-09	2020-11-11
2021	2021-04-25	2021-10-26
2024	2024-03-06	2024-11-09
2025	2025-03-14	2025-10-29
2026	2026-04-29	2026-09-06

Every Fixed Threshold

Fixed thresholds at Bay City Wtr Wks
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	70	174	1950	108
35 C (95 F): Days	68	63	1953	29
40 C (104 F): Days	5	3	1962	1
90 F (32.2 C): Days	70	135	1954	80
100 F (37.8 C): Days	25	13	2000	2
0 C (32 F): Ice days (max	15	6	1989	2
0 C (32 F): Frost days (min	72	26	1948	11
-10 C (14 F): Days with min	6	2	1989	2
20 C (68 F): Tropical nights (min	73	171	2000	133
25 C (77 F): Days with min	73	65	2004	28
10 mm (0.39 in): Days with 10 mm or more rain	77	48	2007	23
25 mm (0.98 in): Days with 25 mm or more rain	77	24	2024	9
50 mm (1.97 in): Days with 50 mm or more rain	76	11	1992	5
100 mm (3.94 in): Days with 100 mm or more rain	36	4	1961	1
200 mm (7.87 in): Days with 200 mm or more rain	3	2	1961	2

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

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Data for Bay City Wtr Wks 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Bay City Wtr Wks Threshold Days by Year (USC00410569)

Key Facts for Bay City Wtr Wks Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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