Counties in Pennsylvania by annual precipitation

Indiana County had the highest annual precipitation of 67 counties in 2015, at 51.16 inches. Bradford County had the lowest, at 34.89 inches. The median was 43.41 inches and the figure for Pennsylvania was 43.09 inches. Source: NOAA National Centers for Environmental Information.

Keep it in a collection in your library.
Highest51.16Indiana County
Lowest34.89Bradford County
Median43.4167 counties
Pennsylvania43.09History

Map of counties, 2015

Adams County: 44.06 inchesAllegheny County: 43.49 inchesArmstrong County: 50.72 inchesBeaver County: 41.46 inchesBedford County: 37.24 inchesBerks County: 42.9 inchesBlair County: 40.09 inchesBradford County: 34.89 inchesBucks County: 43.41 inchesButler County: 45.44 inchesCambria County: 46.56 inchesCameron County: 47.48 inchesCarbon County: 46.27 inchesCentre County: 42.98 inchesChester County: 45.49 inchesClarion County: 49.73 inchesClearfield County: 45.2 inchesClinton County: 41.98 inchesColumbia County: 39.34 inchesCrawford County: 45.35 inchesCumberland County: 39.8 inchesDauphin County: 42.02 inchesDelaware County: 46.53 inchesElk County: 48.64 inchesErie County: 42.61 inchesFayette County: 47.2 inchesForest County: 48.58 inchesFranklin County: 35.85 inchesFulton County: 36.62 inchesGreene County: 41.75 inchesHuntingdon County: 38.65 inchesIndiana County: 51.16 inchesJefferson County: 48.74 inchesJuniata County: 39.3 inchesLackawanna County: 38.37 inchesLancaster County: 42.78 inchesLawrence County: 45.08 inchesLebanon County: 44.28 inchesLehigh County: 43.61 inchesLuzerne County: 38.99 inchesLycoming County: 41.51 inchesMcKean County: 45.34 inchesMercer County: 45.97 inchesMifflin County: 39.54 inchesMonroe County: 46.61 inchesMontgomery County: 43.65 inchesMontour County: 38.83 inchesNorthampton County: 43.63 inchesNorthumberland County: 38.22 inchesPerry County: 40 inchesPhiladelphia County: 46.01 inchesPike County: 41.94 inchesPotter County: 42.71 inchesSchuylkill County: 44.17 inchesSnyder County: 39.4 inchesSomerset County: 47.29 inchesSullivan County: 40.62 inchesSusquehanna County: 39.42 inchesTioga County: 37.92 inchesUnion County: 38.77 inchesVenango County: 47.21 inchesWarren County: 44.51 inchesWashington County: 43.52 inchesWayne County: 40.17 inchesWestmoreland County: 48.97 inchesWyoming County: 37.09 inchesYork County: 44.64 inches
  • Under 39
  • 39 to 41
  • 41 to 43
  • 43 to 45
  • 45 to 47
  • 47 and over
inches, 2015. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2015

Indiana County: 51.16 inchesIndiana County51.16Armstrong County: 50.72 inchesArmstrong County50.72Clarion County: 49.73 inchesClarion County49.73Westmoreland County: 48.97 inchesWestmoreland County48.97Jefferson County: 48.74 inchesJefferson County48.74Elk County: 48.64 inchesElk County48.64Forest County: 48.58 inchesForest County48.58Cameron County: 47.48 inchesCameron County47.48Somerset County: 47.29 inchesSomerset County47.29Venango County: 47.21 inchesVenango County47.21Fayette County: 47.2 inchesFayette County47.2Monroe County: 46.61 inchesMonroe County46.61Cambria County: 46.56 inchesCambria County46.56Delaware County: 46.53 inchesDelaware County46.53Carbon County: 46.27 inchesCarbon County46.27Philadelphia County: 46.01 inchesPhiladelphia County46.01Mercer County: 45.97 inchesMercer County45.97Chester County: 45.49 inchesChester County45.49Butler County: 45.44 inchesButler County45.44Crawford County: 45.35 inchesCrawford County45.35McKean County: 45.34 inchesMcKean County45.34Clearfield County: 45.2 inchesClearfield County45.2Lawrence County: 45.08 inchesLawrence County45.08York County: 44.64 inchesYork County44.64Warren County: 44.51 inchesWarren County44.51Lebanon County: 44.28 inchesLebanon County44.28Schuylkill County: 44.17 inchesSchuylkill County44.17Adams County: 44.06 inchesAdams County44.06Montgomery County: 43.65 inchesMontgomery County43.65Northampton County: 43.63 inchesNorthampton County43.63Lehigh County: 43.61 inchesLehigh County43.61Washington County: 43.52 inchesWashington County43.52Allegheny County: 43.49 inchesAllegheny County43.49Bucks County: 43.41 inchesBucks County43.41Centre County: 42.98 inchesCentre County42.98Berks County: 42.9 inchesBerks County42.9Lancaster County: 42.78 inchesLancaster County42.78Potter County: 42.71 inchesPotter County42.71Erie County: 42.61 inchesErie County42.61Dauphin County: 42.02 inchesDauphin County42.02Indiana County: 51.16 inchesIndiana County51.16Armstrong County: 50.72 inchesArmstrong County50.72Clarion County: 49.73 inchesClarion County49.73Westmoreland County: 48.97 inchesWestmoreland County48.97Jefferson County: 48.74 inchesJefferson County48.74Elk County: 48.64 inchesElk County48.64Forest County: 48.58 inchesForest County48.58Cameron County: 47.48 inchesCameron County47.48Somerset County: 47.29 inchesSomerset County47.29Venango County: 47.21 inchesVenango County47.21Fayette County: 47.2 inchesFayette County47.2Monroe County: 46.61 inchesMonroe County46.61Cambria County: 46.56 inchesCambria County46.56Delaware County: 46.53 inchesDelaware County46.53Carbon County: 46.27 inchesCarbon County46.27Philadelphia County: 46.01 inchesPhiladelphia County46.01Mercer County: 45.97 inchesMercer County45.97Chester County: 45.49 inchesChester County45.49Butler County: 45.44 inchesButler County45.44Crawford County: 45.35 inchesCrawford County45.35McKean County: 45.34 inchesMcKean County45.34Clearfield County: 45.2 inchesClearfield County45.2Lawrence County: 45.08 inchesLawrence County45.08York County: 44.64 inchesYork County44.64Warren County: 44.51 inchesWarren County44.51Lebanon County: 44.28 inchesLebanon County44.28Schuylkill County: 44.17 inchesSchuylkill County44.17Adams County: 44.06 inchesAdams County44.06Montgomery County: 43.65 inchesMontgomery County43.65Northampton County: 43.63 inchesNorthampton County43.63Lehigh County: 43.61 inchesLehigh County43.61Washington County: 43.52 inchesWashington County43.52Allegheny County: 43.49 inchesAllegheny County43.49Bucks County: 43.41 inchesBucks County43.41Centre County: 42.98 inchesCentre County42.98Berks County: 42.9 inchesBerks County42.9Lancaster County: 42.78 inchesLancaster County42.78Potter County: 42.71 inchesPotter County42.71Erie County: 42.61 inchesErie County42.61Dauphin County: 42.02 inchesDauphin County42.02
inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

RankCounties2015
inches
Change on 2014
1Indiana County51.16+21.1%
2Armstrong County50.72+18.9%
3Clarion County49.73+4.2%
4Westmoreland County48.97+14.3%
5Jefferson County48.74+6.7%
6Elk County48.64+5.4%
7Forest County48.58-1%
8Cameron County47.48+15.8%
9Somerset County47.29+12.6%
10Venango County47.21-3.2%
11Fayette County47.2+6.6%
12Monroe County46.61+2.7%
13Cambria County46.56+11.1%
14Delaware County46.53-2%
15Carbon County46.27+0.6%
16Philadelphia County46.01-4.4%
17Mercer County45.97+1.8%
18Chester County45.49-9.5%
19Butler County45.44+7.9%
20Crawford County45.35-3.7%
21McKean County45.34-4.9%
22Clearfield County45.2+11.9%
23Lawrence County45.08+9.2%
24York County44.64-0.1%
25Warren County44.51-8.2%
26Lebanon County44.28-4.7%
27Schuylkill County44.17-6.9%
28Adams County44.06-1.8%
29Montgomery County43.65-8.8%
30Northampton County43.63-5.6%
31Lehigh County43.61-7.1%
32Washington County43.52+13.8%
33Allegheny County43.49+13.3%
34Bucks County43.41-8.6%
35Centre County42.98+5.6%
36Berks County42.9-9%
37Lancaster County42.78-10.4%
38Potter County42.71+6%
39Erie County42.61-9.2%
40Dauphin County42.02-6.3%
41Clinton County41.98+10%
42Pike County41.94-4.3%
43Greene County41.75+9%
44Lycoming County41.51+7.3%
45Beaver County41.46+8.1%
46Sullivan County40.62-2.1%
47Wayne County40.17-4.7%
48Blair County40.09+4.1%
49Perry County40-6%
50Cumberland County39.8-6.6%
51Mifflin County39.54-3.3%
52Susquehanna County39.42-2.8%
53Snyder County39.4-2.5%
54Columbia County39.34-2.4%
55Juniata County39.3-4.4%
56Luzerne County38.99-1.4%
57Montour County38.83+3.1%
58Union County38.77+0.6%
59Huntingdon County38.65+2.9%
60Lackawanna County38.37+0.3%
61Northumberland County38.22+0.4%
62Tioga County37.92+4.1%
63Bedford County37.24+7.4%
64Wyoming County37.09-1.1%
65Fulton County36.62-0.8%
66Franklin County35.85-11.8%
67Bradford County34.89+3.4%

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 Pennsylvania by annual precipitation, 2015) [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 Pennsylvania by annual precipitation, 2015. 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/pennsylvania-counties?period=2015. 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 Pennsylvania by annual precipitation, 2015. 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/pennsylvania-counties?period=2015.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Pennsylvania by annual precipitation, 2015 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/annual-precipitation/pennsylvania-counties?period=2015 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_counties_in_pennsylvania_by_2015,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Pennsylvania by annual precipitation, 2015}},
  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/pennsylvania-counties?period=2015. 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 Pennsylvania by annual precipitation, 2015
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/pennsylvania-counties?period=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/pennsylvania-counties?period=2015.
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 Pennsylvania by annual precipitation using official data, and cite the source.
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Questions

Which county has the highest annual precipitation?

Indiana County, with 51.16 inches in 2015, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Bradford County, with 34.89 inches in 2015.

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.

Annual precipitation: other rankings

Counties in Pennsylvania: more rankings