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Built 2026-10-19 (19 October 2026)

Petersburg Wb City Threshold Days by Year (USW00013738)

17 fixed thresholds counted per year at Petersburg Wb City (USW00013738): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Petersburg Wb City Thresholds

  • Petersburg Wb City: days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 1939 with 95.
  • Petersburg Wb City: days with a maximum temperature at or above 90 F (32.2 C) in 31 years, most in 1943 with 56.
  • Petersburg Wb City: days with a maximum temperature at or below 0 C (32 F) in 31 years, most in 1958 with 25.
  • Petersburg Wb City: nights with a minimum temperature at or below 0 C (32 F) in 31 years, most in 1963 with 143.
  • 17 fixed thresholds have at least one qualifying day at Petersburg Wb City.
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Petersburg Wb City Days per year at Petersburg Wb City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 95 in 1939. 02550751001939: 951940: 551941: 921942: 581943: 781944: 791945: 691946: 521947: 781948: 551949: 611950: 321951: 681952: 761953: 861954: 691955: 581956: 531957: 731958: 571959: 941960: 641961: 701962: 571963: 581964: 831965: 831966: 741967: 361968: 781969: 6719391943194719511955195919631967
Days per year at Petersburg Wb City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 95 in 1939.
Days at or above 30 C (86 F) per year at Petersburg Wb City
YearDaysDecade average
19399595
19405567.7
19419267.7
19425867.7
19437867.7
19447967.7
19456967.7
19465267.7
19477867.7
19485567.7
19496167.7
19503266.6
19516866.6
19527666.6
19538666.6
19546966.6
19555866.6
19565366.6
19577366.6
19585766.6
19599466.6
19606467
19617067
19625767
19635867
19648367
19658367
19667467
19673667
19687867
19696767
First to last qualifying date each year at Petersburg Wb City For each year, a bar from the first to the last day at Petersburg Wb City meeting 30 C (86 F). 1939: 24 April 1939 to 10 October 19391940: 6 May 1940 to 22 September 19401941: 13 April 1941 to 7 October 19411942: 6 April 1942 to 19 September 19421943: 6 May 1943 to 7 September 19431944: 1 May 1944 to 4 September 19441945: 19 March 1945 to 29 September 19451946: 22 April 1946 to 7 October 19461947: 5 April 1947 to 23 October 19471948: 21 March 1948 to 20 September 19481949: 4 May 1949 to 12 October 19491950: 4 May 1950 to 3 September 19501951: 15 May 1951 to 6 October 19511952: 22 April 1952 to 1 October 19521953: 10 May 1953 to 19 October 19531954: 19 April 1954 to 14 October 19541955: 4 May 1955 to 16 September 19551956: 28 April 1956 to 23 September 19561957: 20 April 1957 to 22 September 19571958: 19 April 1958 to 16 October 19581959: 8 April 1959 to 6 October 19591960: 13 April 1960 to 9 September 19601961: 24 April 1961 to 26 September 19611962: 26 April 1962 to 12 October 19621963: 2 April 1963 to 19 October 19631964: 7 May 1964 to 17 September 19641965: 2 May 1965 to 23 September 19651966: 8 May 1966 to 4 September 19661967: 27 May 1967 to 16 August 19671968: 3 May 1968 to 1 October 19681969: 27 April 1969 to 17 September 196919391943194719511955195919631967JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Petersburg Wb City meeting 30 C (86 F).
First to last qualifying date each year at Petersburg Wb City
YearFirst dateLast date
19391939-04-241939-10-10
19401940-05-061940-09-22
19411941-04-131941-10-07
19421942-04-061942-09-19
19431943-05-061943-09-07
19441944-05-011944-09-04
19451945-03-191945-09-29
19461946-04-221946-10-07
19471947-04-051947-10-23
19481948-03-211948-09-20
19491949-05-041949-10-12
19501950-05-041950-09-03
19511951-05-151951-10-06
19521952-04-221952-10-01
19531953-05-101953-10-19
19541954-04-191954-10-14
19551955-05-041955-09-16
19561956-04-281956-09-23
19571957-04-201957-09-22
19581958-04-191958-10-16
19591959-04-081959-10-06
19601960-04-131960-09-09
19611961-04-241961-09-26
19621962-04-261962-10-12
19631963-04-021963-10-19
19641964-05-071964-09-17
19651965-05-021965-09-23
19661966-05-081966-09-04
19671967-05-271967-08-16
19681968-05-031968-10-01
19691969-04-271969-09-17

Every Fixed Threshold

Fixed thresholds at Petersburg Wb City
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3195193967
35 C (95 F): Days292719539
90 F (32.2 C): Days3156194335
100 F (37.8 C): Days8519531
0 C (32 F): Ice days (max3125195813
0 C (32 F): Frost days (min311431963129
-10 C (14 F): Days with min3132196823
-20 C (-4 F): Days with min15519482
20 C (68 F): Tropical nights (min3128194317
25 C (77 F): Days with min5719432
10 mm (0.39 in): Days with 10 mm or more rain3138195228
25 mm (0.98 in): Days with 25 mm or more rain31919674
50 mm (1.97 in): Days with 50 mm or more rain15419492
100 mm (3.94 in): Days with 100 mm or more rain2319491
10 cm (3.9 in): Days with 10 cm or more snowfall20519484
25 cm (9.8 in): Days with 25 cm or more snowfall7219671
50 cm (19.7 in): Days with 50 cm or more snowfall1119621

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

  • Data for Petersburg Wb City 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 . Last revised (2025-12-31).