Built 2026-10-19 (19 October 2026)

Bolivar Threshold Days by Year (USC00300766)

15 fixed thresholds counted per year at Bolivar (USC00300766): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bolivar Thresholds

  • Bolivar: days with a maximum temperature at or below 0 C (32 F) in 53 years, most in 1978 with 78.
  • Bolivar: nights with a minimum temperature at or below 0 C (32 F) in 53 years, most in 1924 with 198.
  • Bolivar: nights with a minimum temperature at or below -10 C (14 F) in 53 years, most in 1989 with 74.
  • Bolivar: nights with a minimum temperature at or below -20 C (-4 F) in 53 years, most in 1904 with 27.
  • 15 fixed thresholds have at least one qualifying day at Bolivar.
50 years with a qualifying day
Days at or above 30 C (86 F) per year at Bolivar Days per year at Bolivar with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 43 in 1900. 02040601897: 91898: 111899: 271900: 431901: 341902: 51903: 131904: 111905: 161906: 291909: 271910: 231913: 311914: 281915: 101916: 311917: 101918: 211919: 221920: 61921: 261922: 111923: 151924: 71971: 81972: 51973: 111974: 51975: 71976: 11977: 71978: 31979: 31980: 21981: 31982: 51983: 161984: 21986: 51987: 201988: 311989: 61990: 61991: 211993: 151994: 91995: 211996: 61997: 51998: 91897190219091916192119721977198219881994
Days per year at Bolivar with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 43 in 1900.
Days at or above 30 C (86 F) per year at Bolivar
YearDaysDecade average
1897915.7
18981115.7
18992715.7
19004322.3
19013422.3
1902522.3
19031322.3
19041122.3
19051622.3
19062922.3
19092722.3
19102322
19133122
19142822
19151022
19163122
19171022
19182122
19192222
1920613
19212613
19221113
19231513
1924713
197185.6
197255.6
1973115.6
197455.6
197575.6
197615.6
197775.6
197835.6
197935.6
1980210
1981310
1982510
19831610
1984210
1986510
19872010
19883110
1989610
1990611.5
19912111.5
19931511.5
1994911.5
19952111.5
1996611.5
1997511.5
1998911.5
First to last qualifying date each year at Bolivar For each year, a bar from the first to the last day at Bolivar meeting 30 C (86 F). 1897: 3 July 1897 to 16 September 18971898: 7 June 1898 to 3 September 18981899: 30 April 1899 to 3 September 18991900: 14 May 1900 to 6 October 19001901: 5 June 1901 to 7 September 19011902: 22 May 1902 to 31 August 19021903: 17 May 1903 to 16 September 19031904: 4 June 1904 to 2 September 19041905: 4 May 1905 to 30 September 19051906: 18 May 1906 to 19 September 19061909: 21 June 1909 to 14 September 19091910: 19 June 1910 to 16 August 19101913: 25 April 1913 to 7 September 19131914: 25 May 1914 to 22 September 19141915: 25 April 1915 to 16 September 19151916: 7 July 1916 to 7 September 19161917: 13 June 1917 to 1 August 19171918: 27 May 1918 to 24 August 19181919: 29 May 1919 to 7 August 19191920: 1 June 1920 to 30 August 19201921: 26 April 1921 to 2 September 19211922: 24 May 1922 to 9 September 19221923: 1 June 1923 to 21 July 19231924: 20 June 1924 to 31 August 19241971: 20 May 1971 to 19 August 19711972: 20 July 1972 to 25 August 19721973: 12 June 1973 to 5 September 19731974: 4 July 1974 to 15 July 19741975: 23 May 1975 to 27 August 19751976: 19 April 1976 to 19 April 19761977: 22 May 1977 to 29 August 19771978: 21 July 1978 to 23 July 19781979: 9 May 1979 to 14 July 19791980: 21 July 1980 to 22 July 19801981: 1 July 1981 to 10 July 19811982: 8 July 1982 to 18 July 19821983: 15 June 1983 to 11 September 19831984: 14 June 1984 to 15 July 19841986: 6 July 1986 to 26 July 19861987: 29 May 1987 to 18 August 19871988: 31 May 1988 to 18 August 19881989: 10 July 1989 to 6 August 19891990: 28 April 1990 to 20 July 19901991: 17 May 1991 to 17 September 19911993: 19 June 1993 to 1 September 19931994: 16 June 1994 to 22 July 19941995: 20 June 1995 to 1 September 19951996: 19 May 1996 to 8 August 19961997: 22 June 1997 to 18 July 19971998: 17 May 1998 to 15 September 199818971904191519221975198219901998JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bolivar meeting 30 C (86 F).
First to last qualifying date each year at Bolivar
YearFirst dateLast date
18971897-07-031897-09-16
18981898-06-071898-09-03
18991899-04-301899-09-03
19001900-05-141900-10-06
19011901-06-051901-09-07
19021902-05-221902-08-31
19031903-05-171903-09-16
19041904-06-041904-09-02
19051905-05-041905-09-30
19061906-05-181906-09-19
19091909-06-211909-09-14
19101910-06-191910-08-16
19131913-04-251913-09-07
19141914-05-251914-09-22
19151915-04-251915-09-16
19161916-07-071916-09-07
19171917-06-131917-08-01
19181918-05-271918-08-24
19191919-05-291919-08-07
19201920-06-011920-08-30
19211921-04-261921-09-02
19221922-05-241922-09-09
19231923-06-011923-07-21
19241924-06-201924-08-31
19711971-05-201971-08-19
19721972-07-201972-08-25
19731973-06-121973-09-05
19741974-07-041974-07-15
19751975-05-231975-08-27
19761976-04-191976-04-19
19771977-05-221977-08-29
19781978-07-211978-07-23
19791979-05-091979-07-14
19801980-07-211980-07-22
19811981-07-011981-07-10
19821982-07-081982-07-18
19831983-06-151983-09-11
19841984-06-141984-07-15
19861986-07-061986-07-26
19871987-05-291987-08-18
19881988-05-311988-08-18
19891989-07-101989-08-06
19901990-04-281990-07-20
19911991-05-171991-09-17
19931993-06-191993-09-01
19941994-06-161994-07-22
19951995-06-201995-09-01
19961996-05-191996-08-08
19971997-06-221997-07-18
19981998-05-171998-09-15

Every Fixed Threshold

Fixed thresholds at Bolivar
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days504319009
35 C (95 F): Days8419002
90 F (32.2 C): Days331919002
0 C (32 F): Ice days (max5378197820
0 C (32 F): Frost days (min531981924150
-10 C (14 F): Days with min5374198933
-20 C (-4 F): Days with min532719041
-30 C (-22 F): Days with min22519792
20 C (68 F): Tropical nights (min11219161
10 mm (0.39 in): Days with 10 mm or more rain5245191724
25 mm (0.98 in): Days with 25 mm or more rain521219178
50 mm (1.97 in): Days with 50 mm or more rain27319192
100 mm (3.94 in): Days with 100 mm or more rain1119721
10 cm (3.9 in): Days with 10 cm or more snowfall28819773
25 cm (9.8 in): Days with 25 cm or more snowfall8319781

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

  • Data for Bolivar 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).