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Built 2026-10-16 (16 October 2026)

Bay St Louis Nasa Threshold Days by Year

15 fixed thresholds counted per year at Bay St Louis Nasa (USC00220521): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bay St Louis Nasa Thresholds

  • Bay St Louis Nasa: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1993 with 59.
  • Bay St Louis Nasa: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1993 with 30.
  • Bay St Louis Nasa: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1991 with 13.
  • Bay St Louis Nasa: days with a maximum temperature at or above 30 C (86 F) in 26 years, most in 2003 with 146.
  • 15 fixed thresholds have at least one qualifying day at Bay St Louis Nasa.
26 years with a qualifying day
Days at or above 30 C (86 F) per year at Bay St Louis Nasa Days per year at Bay St Louis Nasa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 146 in 2003. 0501001501979: 1341980: 1301981: 1401982: 1341983: 1161984: 1161985: 1221986: 1311987: 1261988: 1161989: 1291990: 1341991: 1281992: 1061993: 1281994: 1151995: 1341996: 1241997: 1191998: 1401999: 1392000: 1432001: 1262002: 1342003: 1462006: 104197919821985198819911994199720002003
Days per year at Bay St Louis Nasa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 146 in 2003.
Days at or above 30 C (86 F) per year at Bay St Louis Nasa
YearDaysDecade average
1979134134
1980130126
1981140126
1982134126
1983116126
1984116126
1985122126
1986131126
1987126126
1988116126
1989129126
1990134126.7
1991128126.7
1992106126.7
1993128126.7
1994115126.7
1995134126.7
1996124126.7
1997119126.7
1998140126.7
1999139126.7
2000143130.6
2001126130.6
2002134130.6
2003146130.6
2006104130.6
First to last qualifying date each year at Bay St Louis Nasa For each year, a bar from the first to the last day at Bay St Louis Nasa meeting 30 C (86 F). 1979: 14 April 1979 to 19 October 19791980: 23 April 1980 to 18 October 19801981: 15 April 1981 to 16 October 19811982: 18 March 1982 to 12 October 19821983: 9 May 1983 to 9 October 19831984: 29 April 1984 to 1 November 19841985: 29 April 1985 to 24 October 19851986: 8 April 1986 to 7 October 19861987: 19 April 1987 to 29 October 19871988: 25 April 1988 to 29 October 19881989: 19 March 1989 to 16 October 19891990: 23 April 1990 to 22 October 19901991: 23 March 1991 to 15 October 19911992: 14 April 1992 to 23 September 19921993: 7 May 1993 to 21 October 19931994: 8 May 1994 to 1 October 19941995: 30 April 1995 to 23 October 19951996: 11 May 1996 to 2 November 19961997: 2 May 1997 to 22 October 19971998: 8 May 1998 to 1 November 19981999: 21 March 1999 to 28 October 19992000: 9 March 2000 to 30 October 20002001: 13 April 2001 to 24 October 20012002: 18 March 2002 to 11 October 20022003: 13 April 2003 to 6 November 20032006: 17 April 2006 to 5 October 20061979198319871991199519992003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bay St Louis Nasa meeting 30 C (86 F).
First to last qualifying date each year at Bay St Louis Nasa
YearFirst dateLast date
19791979-04-141979-10-19
19801980-04-231980-10-18
19811981-04-151981-10-16
19821982-03-181982-10-12
19831983-05-091983-10-09
19841984-04-291984-11-01
19851985-04-291985-10-24
19861986-04-081986-10-07
19871987-04-191987-10-29
19881988-04-251988-10-29
19891989-03-191989-10-16
19901990-04-231990-10-22
19911991-03-231991-10-15
19921992-04-141992-09-23
19931993-05-071993-10-21
19941994-05-081994-10-01
19951995-04-301995-10-23
19961996-05-111996-11-02
19971997-05-021997-10-22
19981998-05-081998-11-01
19991999-03-211999-10-28
20002000-03-092000-10-30
20012001-04-132001-10-24
20022002-03-182002-10-11
20032003-04-132003-11-06
20062006-04-172006-10-05

Every Fixed Threshold

Fixed thresholds at Bay St Louis Nasa
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days261462003104
35 C (95 F): Days2565200014
40 C (104 F): Days2220002
90 F (32.2 C): Days26109199049
100 F (37.8 C): Days132120001
0 C (32 F): Ice days (max3219892
0 C (32 F): Frost days (min1939198019
-10 C (14 F): Days with min3419893
20 C (68 F): Tropical nights (min191411991100
25 C (77 F): Days with min131219802
10 mm (0.39 in): Days with 10 mm or more rain2759199343
25 mm (0.98 in): Days with 25 mm or more rain2730199315
50 mm (1.97 in): Days with 50 mm or more rain271319916
100 mm (3.94 in): Days with 100 mm or more rain20419911
200 mm (7.87 in): Days with 200 mm or more rain3119911

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1979.

Download the Data

  • Data for Bay St Louis Nasa 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).