Counties in Maine by annual precipitation

Franklin County had the highest annual precipitation of 16 counties in 2024, at 50.41 inches. Aroostook County had the lowest, at 35.7 inches. The median was 46.96 inches and the figure for Maine was 42.9 inches. Source: NOAA National Centers for Environmental Information.

Highest50.41Franklin County

Lowest35.7Aroostook County

Median46.9616 counties

Maine42.9History

Map of counties, 2024

Under 43
43 to 46
46 to 47
47 to 48
48 and over

inches, 2024. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2024 inches	Change on 2023
1	Franklin County	50.41	-15.4%
2	Knox County	49.37	-19%
3	Oxford County	49.07	-16.3%
4	Androscoggin County	48.05	-21.3%
5	Cumberland County	47.85	-19.7%
6	Lincoln County	47.58	-18.9%
7	Sagadahoc County	47.38	-20.2%
8	York County	46.99	-23.3%
9	Hancock County	46.92	-19.2%
10	Kennebec County	46.23	-20.3%
11	Waldo County	45.75	-21.6%
12	Washington County	44.69	-20%
13	Somerset County	43.15	-20%
14	Piscataquis County	41.31	-24.8%
15	Penobscot County	41.28	-21.8%
16	Aroostook County	35.7	-21.8%

Other periods

About this ranking

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.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

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 (Counties in Maine by annual precipitation, 2024) [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, Counties in Maine by annual precipitation, 2024. 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/rankings/annual-precipitation/maine-counties?period=2024. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December precipitation, counties. Counties in Maine by annual precipitation, 2024. 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/rankings/annual-precipitation/maine-counties?period=2024.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Maine by annual precipitation, 2024 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/annual-precipitation/maine-counties?period=2024 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_maine_by_2024,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Maine by annual precipitation, 2024}},
  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/rankings/annual-precipitation/maine-counties?period=2024. 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: Counties in Maine by annual precipitation, 2024
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/rankings/annual-precipitation/maine-counties?period=2024
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/maine-counties?period=2024.
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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Rank Counties in Maine by annual precipitation using official data, and cite the source.

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Questions

Which county has the highest annual precipitation?

Franklin County, with 50.41 inches in 2024, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Aroostook County, with 35.7 inches in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.