Petersburg Threshold Days by Year (USC00466952)

16 fixed thresholds counted per year at Petersburg (USC00466952): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Petersburg Thresholds

Petersburg: days with 10 mm (0.39 in) or more of precipitation in 19 years, most in 1996 with 42.
Petersburg: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1996 with 11.
Petersburg: nights with a minimum temperature at or below 0 C (32 F) in 16 years, most in 1997 with 135.
Petersburg: nights with a minimum temperature at or below -10 C (14 F) in 16 years, most in 2005 with 26.
16 fixed thresholds have at least one qualifying day at Petersburg.

Days at or above 30 C (86 F)

15 years with a qualifying day

Days per year at Petersburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 93 in 2016.

Days at or above 30 C (86 F) per year at Petersburg
Year	Days	Decade average
1996	30	46.8
1997	38	46.8
1998	61	46.8
1999	58	46.8
2000	26	37.8
2001	47	37.8
2003	23	37.8
2005	47	37.8
2006	35	37.8
2007	49	37.8
2011	83	80.8
2012	81	80.8
2014	66	80.8
2016	93	80.8
2025	45	45

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

First to last qualifying date each year at Petersburg
Year	First date	Last date
1996	1996-04-23	1996-08-25
1997	1997-05-19	1997-10-07
1998	1998-03-28	1998-10-19
1999	1999-04-23	1999-09-09
2000	2000-05-07	2000-09-21
2001	2001-04-13	2001-10-25
2003	2003-06-25	2003-08-30
2005	2005-06-06	2005-09-23
2006	2006-05-30	2006-08-26
2007	2007-05-02	2007-10-10
2011	2011-04-12	2011-09-15
2012	2012-04-16	2012-09-08
2014	2014-04-14	2014-09-22
2016	2016-04-19	2016-10-21
2025	2025-04-20	2025-10-08

Every Fixed Threshold

Fixed thresholds at Petersburg
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	15	93	2016	45
35 C (95 F): Days	10	17	2012	3
40 C (104 F): Days	1	1	2011	1
90 F (32.2 C): Days	15	59	2016	18
100 F (37.8 C): Days	4	3	2012	1
0 C (32 F): Ice days (max	15	25	2003	12
0 C (32 F): Frost days (min	16	135	1997	78
-10 C (14 F): Days with min	16	26	2005	17
-20 C (-4 F): Days with min	4	2	1996	4
20 C (68 F): Tropical nights (min	16	24	2016	10
10 mm (0.39 in): Days with 10 mm or more rain	19	42	1996	19
25 mm (0.98 in): Days with 25 mm or more rain	19	11	1996	5
50 mm (1.97 in): Days with 50 mm or more rain	12	2	1996	2
10 cm (3.9 in): Days with 10 cm or more snowfall	16	5	1996	1
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	2003	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1996	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

Data for Petersburg 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).

Petersburg Threshold Days by Year (USC00466952)

Key Facts for Petersburg Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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