Data / Annual precipitation / St. Mary Parish

Annual precipitation in St. Mary Parish

Annual precipitation in St. Mary Parish was 54.58 inches in 2025, according to NOAA National Centers for Environmental Information. That is down 17.8% from 2024. That is the 23rd highest of 64 counties in 2025.

2025, inches54.58
Change on 2024-17.8%
Rank23rd of 64Counties in Louisiana ranked
Series high86.391992
Series low37.892011

Next release: Wednesday, 6 October 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

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Annual precipitation in St. Mary Parish, 1950 to 2025

30405060708090195019611972198319942005201620251950: 53.18 inches1951: 52.1 inches1952: 55.7 inches1953: 62.46 inches1954: 48.47 inches1955: 59.06 inches1956: 54.35 inches1957: 65.29 inches1958: 53.12 inches1959: 66.91 inches1960: 49.59 inches1961: 65.51 inches1962: 43.22 inches1963: 50.98 inches1964: 71.33 inches1965: 53.47 inches1966: 70.42 inches1967: 53.24 inches1968: 53.65 inches1969: 58.32 inches1970: 60.9 inches1971: 53.81 inches1972: 62.68 inches1973: 73.61 inches1974: 57.56 inches1975: 69.83 inches1976: 48.67 inches1977: 66.89 inches1978: 64.42 inches1979: 70.39 inches1980: 71.39 inches1981: 44.5 inches1982: 64.01 inches1983: 74.13 inches1984: 59.93 inches1985: 64.31 inches1986: 56.3 inches1987: 66.13 inches1988: 68.59 inches1989: 66.11 inches1990: 52.32 inches1991: 83.17 inches1992: 86.39 inches1993: 64.41 inches1994: 49.94 inches1995: 62.56 inches1996: 52.28 inches1997: 60.97 inches1998: 69.33 inches1999: 50.54 inches2000: 45.51 inches2001: 66.17 inches2002: 68.45 inches2003: 55.28 inches2004: 66.27 inches2005: 49.53 inches2006: 49.89 inches2007: 54.64 inches2008: 47.81 inches2009: 65.07 inches2010: 47.12 inches2011: 37.89 inches2012: 59.51 inches2013: 65.83 inches2014: 57.14 inches2015: 72.35 inches2016: 76.59 inches2017: 74.8 inches2018: 65.66 inches2019: 59.68 inches2020: 56.91 inches2021: 72.39 inches2022: 48.55 inches2023: 43.19 inches2024: 66.41 inches2025: 54.58 inches2040608010019501976200220252025: 54.58 inches
inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12, published 2026-10-06.
All 76 values
Periodinches
202554.58
202466.41
202343.19
202248.55
202172.39
202056.91
201959.68
201865.66
201774.8
201676.59
201572.35
201457.14
201365.83
201259.51
201137.89
201047.12
200965.07
200847.81
200754.64
200649.89
200549.53
200466.27
200355.28
200268.45
200166.17
200045.51
199950.54
199869.33
199760.97
199652.28
199562.56
199449.94
199364.41
199286.39
199183.17
199052.32
198966.11
198868.59
198766.13
198656.3
198564.31
198459.93
198374.13
198264.01
198144.5
198071.39
197970.39
197864.42
197766.89
197648.67
197569.83
197457.56
197373.61
197262.68
197153.81
197060.9
196958.32
196853.65
196753.24
196670.42
196553.47
196471.33
196350.98
196243.22
196165.51
196049.59
195966.91
195853.12
195765.29
195654.35
195559.06
195448.47
195362.46
195255.7
195152.1
195053.18

Compared with Louisiana and United States

Place2025
St. Mary Parish54.58
Louisiana53.05
United States29.26

St. Mary Parish compared with nearby places

Acadia Parish: 59.88 inchesAllen Parish: 53.09 inchesAscension Parish: 55.73 inchesAssumption Parish: 52.24 inchesAvoyelles Parish: 53.76 inchesBeauregard Parish: 51.8 inchesBienville Parish: 49.53 inchesBossier Parish: 48.15 inchesCaddo Parish: 49.72 inchesCalcasieu Parish: 52.22 inchesCaldwell Parish: 52.99 inchesCameron Parish: 52.95 inchesCatahoula Parish: 51.46 inchesClaiborne Parish: 54.68 inchesConcordia Parish: 52.21 inchesDe Soto Parish: 51.29 inchesEast Baton Rouge Parish: 57.57 inchesEast Carroll Parish: 56.11 inchesEast Feliciana Parish: 56.83 inchesEvangeline Parish: 55.28 inchesFranklin Parish: 49.47 inchesGrant Parish: 51.64 inchesIberia Parish: 56.39 inchesIberville Parish: 59.41 inchesJackson Parish: 51.69 inchesJefferson Parish: 54.78 inchesJefferson Davis Parish: 56.41 inchesLafayette Parish: 61.68 inchesLafourche Parish: 51.25 inchesLaSalle Parish: 52.71 inchesLincoln Parish: 53.47 inchesLivingston Parish: 51.84 inchesMadison Parish: 51.3 inchesMorehouse Parish: 54.68 inchesNatchitoches Parish: 52.15 inchesOrleans Parish: 53.81 inchesOuachita Parish: 52.69 inchesPlaquemines Parish: 52.92 inchesPointe Coupee Parish: 58.17 inchesRapides Parish: 53.46 inchesRed River Parish: 49.82 inchesRichland Parish: 51.98 inchesSabine Parish: 56.58 inchesSt. Bernard Parish: 54.07 inchesSt. Charles Parish: 54.76 inchesSt. Helena Parish: 52.3 inchesSt. James Parish: 52.81 inchesSt. John the Baptist Parish: 52.62 inchesSt. Landry Parish: 60.89 inchesSt. Martin Parish: 59.11 inchesSt. Mary Parish: 54.58 inchesSt. Tammany Parish: 48.34 inchesTangipahoa Parish: 47.54 inchesTensas Parish: 49.38 inchesTerrebonne Parish: 47.28 inchesUnion Parish: 53.41 inchesVermilion Parish: 55.6 inchesVernon Parish: 52.21 inchesWashington Parish: 47.96 inchesWebster Parish: 50.58 inchesWest Baton Rouge Parish: 58.66 inchesWest Carroll Parish: 57.21 inchesWest Feliciana Parish: 57.17 inchesWinn Parish: 51.05 inches
  • Under 51
  • 51 to 52
  • 52 to 53
  • 53 to 55
  • 55 to 57
  • 57 and over
Annual precipitation, 2025, inches. St. Mary Parish is outlined. Same source and period for every area shown. Source: NOAA National Centers for Environmental Information. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

Definition

Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.

Values are area averages, not the reading at one weather station. NOAA revises the last two years every month.

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How to cite

NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

NOAA National Centers for Environmental Information. (2026). NOAA Climate at a Glance, January to December precipitation, counties (Annual precipitation, St. Mary Parish, 1950 to 2025) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping

MLA 9

NOAA Climate at a Glance, January to December precipitation, counties, Annual precipitation, St. Mary Parish, 1950 to 2025. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Invokely, https://invokely.ai/en/annual-precipitation/st-mary-parish-louisiana. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December precipitation, counties. Annual precipitation, St. Mary Parish, 1950 to 2025. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Also distributed by Invokely, https://invokely.ai/en/annual-precipitation/st-mary-parish-louisiana.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Annual precipitation, St. Mary Parish, 1950 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/en/annual-precipitation/st-mary-parish-louisiana (Accessed: 12 October 2026).

BibTeX
@misc{noaa_annual_precipitation_st_mary_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Annual precipitation, St. Mary Parish, 1950 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/annual-precipitation/st-mary-parish-louisiana. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - NOAA National Centers for Environmental Information
TI  - NOAA Climate at a Glance, January to December precipitation, counties: Annual precipitation, St. Mary Parish, 1950 to 2025
PY  - 2026
DA  - 2026/10/06
PB  - NOAA National Centers for Environmental Information
DB  - Invokely
UR  - https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping
L2  - https://invokely.ai/en/annual-precipitation/st-mary-parish-louisiana
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/annual-precipitation/st-mary-parish-louisiana.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
ER  -
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Questions

What is the annual precipitation in St. Mary Parish?

Annual precipitation in St. Mary Parish was 54.58 inches in 2025, according to NOAA National Centers for Environmental Information. That is down 17.8% from 2024. That is the 23rd highest of 64 counties in 2025.

Where does this figure come from?

NOAA National Centers for Environmental Information. NOAA Climate at a Glance, January to December precipitation, counties. Retrieved by Invokely on 2026-10-12.

What was the highest annual precipitation in St. Mary Parish?

86.39 inches in 1992, the highest value since 1950 in this series.

Related statistics for St. Mary Parish

All statistics for St. Mary Parish | St. Mary Parish in figures