Piestany Threshold Days by Year (LOM00011826)

10 fixed thresholds counted per year at Piestany (LOM00011826): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Piestany Thresholds

Piestany: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 2015 with 44.
Piestany: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 1996 with 41.
Piestany: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 2010 with 32.
Piestany: days with a maximum temperature at or above 90 F (32.2 C) in 31 years, most in 2015 with 29.
10 fixed thresholds have at least one qualifying day at Piestany.

Days at or above 30 C (86 F)

36 years with a qualifying day

Days per year at Piestany with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 44 in 2015.

Days at or above 30 C (86 F) per year at Piestany
Year	Days	Decade average
1973	14	11.7
1974	13	11.7
1976	15	11.7
1977	9	11.7
1978	5	11.7
1979	14	11.7
1980	4	11.6
1981	18	11.6
1984	7	11.6
1986	13	11.6
1987	8	11.6
1988	18	11.6
1989	13	11.6
1990	19	13.3
1995	19	13.3
1996	7	13.3
1997	8	13.3
1998	21	13.3
1999	6	13.3
2000	22	21.5
2001	19	21.5
2002	16	21.5
2003	41	21.5
2004	13	21.5
2005	10	21.5
2006	31	21.5
2007	27	21.5
2008	19	21.5
2009	17	21.5
2010	18	25.7
2011	15	25.7
2012	39	25.7
2013	23	25.7
2014	15	25.7
2015	44	25.7
2025	20	20

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

First to last qualifying date each year at Piestany
Year	First date	Last date
1973	1973-06-28	1973-09-09
1974	1974-07-14	1974-08-21
1976	1976-06-27	1976-07-21
1977	1977-06-10	1977-08-09
1978	1978-06-03	1978-08-07
1979	1979-05-20	1979-08-15
1980	1980-08-03	1980-08-21
1981	1981-06-02	1981-08-16
1984	1984-07-11	1984-08-05
1986	1986-06-16	1986-08-12
1987	1987-07-01	1987-09-14
1988	1988-07-05	1988-08-20
1989	1989-07-03	1989-08-23
1990	1990-06-28	1990-08-31
1995	1995-07-01	1995-08-24
1996	1996-06-08	1996-08-02
1997	1997-06-28	1997-08-27
1998	1998-06-06	1998-08-18
1999	1999-07-04	1999-08-09
2000	2000-05-27	2000-08-21
2001	2001-07-07	2001-08-27
2002	2002-06-15	2002-08-18
2003	2003-05-07	2003-09-22
2004	2004-07-17	2004-08-20
2005	2005-05-28	2005-08-03
2006	2006-06-19	2006-08-19
2007	2007-05-24	2007-08-23
2008	2008-05-28	2008-09-06
2009	2009-06-30	2009-09-03
2010	2010-06-10	2010-08-13
2011	2011-06-22	2011-09-11
2012	2012-04-30	2012-09-11
2013	2013-06-17	2013-08-19
2014	2014-06-08	2014-08-11
2015	2015-06-07	2015-09-17
2025	2025-06-23	2025-08-16

Every Fixed Threshold

Fixed thresholds at Piestany
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	36	44	2015	20
35 C (95 F): Days	11	17	2015	3
90 F (32.2 C): Days	31	29	2015	12
100 F (37.8 C): Days	3	2	2007	2
0 C (32 F): Ice days (max	35	41	1996	3
0 C (32 F): Frost days (min	1	0	n/a	48
-10 C (14 F): Days with min	1	0	n/a	4
10 mm (0.39 in): Days with 10 mm or more rain	32	32	2010	11
25 mm (0.98 in): Days with 25 mm or more rain	29	5	2013	2
50 mm (1.97 in): Days with 50 mm or more rain	8	1	1974	5

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

Data for Piestany 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).

Piestany Threshold Days by Year (LOM00011826)

Key Facts for Piestany Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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