Pittsburgh ASOS Threshold Days by Year (USW00094823)

18 fixed thresholds counted per year at Pittsburgh ASOS (USW00094823): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pittsburgh ASOS Thresholds

Pittsburgh ASOS: days with a maximum temperature at or above 30 C (86 F) in 79 years, most in 1991 with 70.
Pittsburgh ASOS: days with a maximum temperature at or below 0 C (32 F) in 79 years, most in 1960 with 69.
Pittsburgh ASOS: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 1963 with 140.
Pittsburgh ASOS: nights with a minimum temperature at or below -10 C (14 F) in 79 years, most in 1977 with 48.
18 fixed thresholds have at least one qualifying day at Pittsburgh ASOS.

Days at or above 30 C (86 F)

79 years with a qualifying day

Days per year at Pittsburgh ASOS with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 70 in 1991.

Days at or above 30 C (86 F) per year at Pittsburgh ASOS
Year	Days	Decade average
1948	28	35.5
1949	43	35.5
1950	16	31.3
1951	33	31.3
1952	43	31.3
1953	40	31.3
1954	32	31.3
1955	45	31.3
1956	14	31.3
1957	26	31.3
1958	9	31.3
1959	55	31.3
1960	16	27
1961	28	27
1962	34	27
1963	24	27
1964	32	27
1965	25	27
1966	43	27
1967	21	27
1968	29	27
1969	18	27
1970	32	20.7
1971	24	20.7
1972	14	20.7
1973	31	20.7
1974	17	20.7
1975	26	20.7
1976	3	20.7
1977	18	20.7
1978	29	20.7
1979	13	20.7
1980	38	27.7
1981	17	27.7
1982	16	27.7
1983	30	27.7
1984	21	27.7
1985	12	27.7
1986	19	27.7
1987	41	27.7
1988	53	27.7
1989	30	27.7
1990	23	34.2
1991	70	34.2
1992	13	34.2
1993	48	34.2
1994	36	34.2
1995	54	34.2
1996	22	34.2
1997	18	34.2
1998	22	34.2
1999	36	34.2
2000	8	24.4
2001	22	24.4
2002	52	24.4
2003	14	24.4
2004	5	24.4
2005	43	24.4
2006	21	24.4
2007	41	24.4
2008	25	24.4
2009	13	24.4
2010	48	33.6
2011	41	33.6
2012	46	33.6
2013	19	33.6
2014	13	33.6
2015	33	33.6
2016	55	33.6
2017	23	33.6
2018	28	33.6
2019	30	33.6
2020	43	33.9
2021	30	33.9
2022	27	33.9
2023	19	33.9
2024	51	33.9
2025	41	33.9
2026	26	33.9

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

First to last qualifying date each year at Pittsburgh ASOS
Year	First date	Last date
1948	1948-05-11	1948-09-17
1949	1949-05-04	1949-10-10
1950	1950-06-07	1950-08-28
1951	1951-06-01	1951-10-05
1952	1952-06-06	1952-09-14
1953	1953-05-30	1953-09-30
1954	1954-05-31	1954-09-29
1955	1955-05-04	1955-09-19
1956	1956-06-12	1956-09-01
1957	1957-04-27	1957-09-03
1958	1958-06-05	1958-09-04
1959	1959-05-06	1959-10-06
1960	1960-04-23	1960-09-08
1961	1961-06-12	1961-09-25
1962	1962-05-14	1962-08-31
1963	1963-05-09	1963-09-12
1964	1964-05-19	1964-09-10
1965	1965-05-09	1965-09-10
1966	1966-06-05	1966-09-03
1967	1967-05-27	1967-08-02
1968	1968-06-06	1968-09-04
1969	1969-05-29	1969-09-01
1970	1970-04-30	1970-09-24
1971	1971-06-04	1971-09-10
1972	1972-07-01	1972-09-17
1973	1973-06-09	1973-09-05
1974	1974-05-14	1974-08-27
1975	1975-06-15	1975-08-26
1976	1976-04-18	1976-07-15
1977	1977-05-17	1977-09-02
1978	1978-05-26	1978-09-20
1979	1979-05-08	1979-08-08
1980	1980-06-14	1980-09-13
1981	1981-05-24	1981-09-01
1982	1982-05-18	1982-09-13
1983	1983-06-14	1983-09-11
1984	1984-06-06	1984-09-22
1985	1985-07-13	1985-09-08
1986	1986-04-28	1986-09-30
1987	1987-05-28	1987-08-17
1988	1988-05-29	1988-08-27
1989	1989-05-31	1989-09-09
1990	1990-04-25	1990-09-06
1991	1991-05-12	1991-09-16
1992	1992-06-14	1992-08-26
1993	1993-05-10	1993-09-14
1994	1994-05-22	1994-09-15
1995	1995-06-05	1995-09-06
1996	1996-05-10	1996-08-23
1997	1997-06-20	1997-08-16
1998	1998-05-15	1998-09-26
1999	1999-06-07	1999-09-12
2000	2000-05-07	2000-09-02
2001	2001-06-12	2001-09-07
2002	2002-04-16	2002-09-20
2003	2003-06-24	2003-08-29
2004	2004-05-13	2004-08-02
2005	2005-06-05	2005-08-20
2006	2006-05-29	2006-08-26
2007	2007-05-01	2007-10-08
2008	2008-06-05	2008-09-14
2009	2009-04-25	2009-08-20
2010	2010-05-26	2010-09-24
2011	2011-05-29	2011-09-03
2012	2012-05-03	2012-09-06
2013	2013-05-21	2013-09-11
2014	2014-05-13	2014-09-05
2015	2015-05-08	2015-09-09
2016	2016-05-27	2016-09-23
2017	2017-04-30	2017-09-27
2018	2018-05-28	2018-09-21
2019	2019-05-19	2019-10-03
2020	2020-05-25	2020-09-10
2021	2021-05-23	2021-08-29
2022	2022-05-21	2022-08-29
2023	2023-06-01	2023-09-06
2024	2024-05-03	2024-09-21
2025	2025-04-19	2025-09-21
2026	2026-05-18	2026-09-16

Every Fixed Threshold

Fixed thresholds at Pittsburgh ASOS
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	79	70	1991	26
35 C (95 F): Days	25	13	1988	1
90 F (32.2 C): Days	71	38	1988	7
100 F (37.8 C): Days	2	3	1988	1
0 C (32 F): Ice days (max	79	69	1960	29
0 C (32 F): Frost days (min	79	140	1963	68
-10 C (14 F): Days with min	79	48	1977	25
-20 C (-4 F): Days with min	38	10	1963	3
-30 C (-22 F): Days with min	1	1	1994	1
20 C (68 F): Tropical nights (min	78	39	2024	36
25 C (77 F): Days with min	2	1	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	79	51	2018	36
25 mm (0.98 in): Days with 25 mm or more rain	79	14	1975	14
50 mm (1.97 in): Days with 50 mm or more rain	38	3	2004	3
100 mm (3.94 in): Days with 100 mm or more rain	1	1	2004	1
10 cm (3.9 in): Days with 10 cm or more snowfall	66	5	1950	2
25 cm (9.8 in): Days with 25 cm or more snowfall	11	2	1950	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1993	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

Data for Pittsburgh ASOS 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).

Pittsburgh ASOS Threshold Days by Year (USW00094823)

Key Facts for Pittsburgh ASOS Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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