Petrun Threshold Days by Year (RSM00023324)

12 fixed thresholds counted per year at Petrun (RSM00023324): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Petrun Thresholds

Petrun: days with 10 mm (0.39 in) or more of precipitation in 97 years, most in 2007 with 16.
Petrun: days with a maximum temperature at or below 0 C (32 F) in 91 years, most in 1998 with 208.
Petrun: nights with a minimum temperature at or below 0 C (32 F) in 90 years, most in 1958 with 270.
Petrun: nights with a minimum temperature at or below -10 C (14 F) in 90 years, most in 1998 with 188.
12 fixed thresholds have at least one qualifying day at Petrun.

Days at or above 30 C (86 F)

36 years with a qualifying day

Days per year at Petrun with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 2007.

Days at or above 30 C (86 F) per year at Petrun
Year	Days	Decade average
1931	1	1
1936	1	1
1943	3	3
1946	3	3
1952	1	2.6
1953	1	2.6
1954	6	2.6
1955	3	2.6
1957	2	2.6
1961	2	2.2
1963	2	2.2
1964	4	2.2
1965	1	2.2
1966	2	2.2
1972	1	2.5
1974	4	2.5
1982	1	3.3
1983	2	3.3
1988	2	3.3
1989	8	3.3
1990	9	3.8
1991	1	3.8
1994	4	3.8
1998	1	3.8
2000	3	4.7
2004	6	4.7
2005	5	4.7
2006	2	4.7
2007	10	4.7
2008	2	4.7
2011	3	4.3
2012	1	4.3
2013	9	4.3
2016	5	4.3
2017	4	4.3
2018	4	4.3

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

First to last qualifying date each year at Petrun
Year	First date	Last date
1931	1931-08-13	1931-08-13
1936	1936-07-10	1936-07-10
1943	1943-07-13	1943-07-15
1946	1946-08-01	1946-08-07
1952	1952-07-21	1952-07-21
1953	1953-08-10	1953-08-10
1954	1954-07-18	1954-07-23
1955	1955-06-20	1955-07-24
1957	1957-07-11	1957-07-12
1961	1961-07-12	1961-07-13
1963	1963-06-26	1963-06-27
1964	1964-07-04	1964-07-07
1965	1965-07-08	1965-07-08
1966	1966-07-11	1966-07-12
1972	1972-07-09	1972-07-09
1974	1974-07-16	1974-07-25
1982	1982-07-09	1982-07-09
1983	1983-07-01	1983-07-02
1988	1988-07-06	1988-07-07
1989	1989-07-01	1989-07-21
1990	1990-07-09	1990-07-17
1991	1991-06-02	1991-06-02
1994	1994-07-02	1994-07-29
1998	1998-06-14	1998-06-14
2000	2000-07-15	2000-07-17
2004	2004-06-29	2004-07-20
2005	2005-07-23	2005-07-29
2006	2006-07-11	2006-07-19
2007	2007-07-02	2007-07-17
2008	2008-07-22	2008-07-23
2011	2011-06-26	2011-06-28
2012	2012-07-01	2012-07-01
2013	2013-07-03	2013-07-27
2016	2016-07-14	2016-08-12
2017	2017-07-18	2017-07-23
2018	2018-07-23	2018-07-27

Every Fixed Threshold

Fixed thresholds at Petrun
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	36	10	2007	4
35 C (95 F): Days	1	1	1990	1
90 F (32.2 C): Days	9	9	1990	2
0 C (32 F): Ice days (max	91	208	1998	68
0 C (32 F): Frost days (min	90	270	1958	87
-10 C (14 F): Days with min	90	188	1998	48
-20 C (-4 F): Days with min	90	125	1941	18
-30 C (-22 F): Days with min	90	64	1998	3
-40 C (-40 F): Days with min	82	28	1998	5
20 C (68 F): Tropical nights (min	6	4	1989	1
10 mm (0.39 in): Days with 10 mm or more rain	97	16	2007	7
25 mm (0.98 in): Days with 25 mm or more rain	32	3	1993	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

Data for Petrun 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).

Petrun Threshold Days by Year (RSM00023324)

Key Facts for Petrun Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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