Counties in Pennsylvania by average annual temperature

Philadelphia County had the highest average annual temperature of 67 counties in 2015, at 56 °F. Potter County had the lowest, at 45.4 °F. The median was 49.8 °F and the figure for Pennsylvania was 49.5 °F. Source: NOAA National Centers for Environmental Information.

Highest56Philadelphia County

Lowest45.4Potter County

Median49.867 counties

Pennsylvania49.5History

Map of counties, 2015

Under 48
48 to 50
50 to 51
51 to 52
52 and over

°F, 2015. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2015

°F. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2015 °F	Change on 2014
1	Philadelphia County	56	+3.7%
2	Delaware County	55.7	+4.1%
3	Montgomery County	54.1	+4%
4	Chester County	53.7	+4.3%
5	Bucks County	53.2	+3.9%
6	Lancaster County	53.1	+4.3%
6	York County	53.1	+4.5%
8	Cumberland County	52.9	+4.5%
9	Adams County	52.8	+4.3%
9	Franklin County	52.8	+4.8%
11	Berks County	52.4	+4.4%
12	Lebanon County	52.2	+4.4%
13	Greene County	52.1	+4.8%
13	Lehigh County	52.1	+4.2%
15	Dauphin County	52	+4.2%
15	Perry County	52	+4.4%
17	Fulton County	51.9	+5.1%
18	Allegheny County	51.8	+4.2%
19	Washington County	51.6	+4.5%
20	Juniata County	51.5	+4.3%
21	Northampton County	51.3	+3.8%
22	Huntingdon County	51	+4.5%
23	Beaver County	50.8	+4.5%
23	Westmoreland County	50.8	+4.7%
25	Bedford County	50.7	+5.2%
25	Fayette County	50.7	+4.8%
25	Mifflin County	50.7	+4.1%
28	Lawrence County	50.6	+5%
29	Snyder County	50.5	+3.7%
30	Northumberland County	50	+4%
31	Butler County	49.9	+4%
31	Montour County	49.9	+3.7%
33	Armstrong County	49.8	+4.2%
33	Union County	49.8	+4%
35	Blair County	49.7	+4.9%
36	Schuylkill County	49.6	+4.4%
37	Indiana County	49.4	+4.7%
38	Mercer County	49.1	+4.5%
39	Columbia County	49	+4.3%
40	Centre County	48.8	+4.3%
40	Clarion County	48.8	+4.5%
42	Carbon County	48.6	+4.5%
42	Venango County	48.6	+3.8%
44	Clearfield County	48.4	+5%
44	Jefferson County	48.4	+4.8%
44	Luzerne County	48.4	+4.8%
47	Somerset County	48.2	+5%
48	Lycoming County	48.1	+3.7%
48	Monroe County	48.1	+4.1%
50	Cambria County	48	+5%
50	Clinton County	48	+3.9%
50	Crawford County	48	+4.6%
53	Wyoming County	47.9	+4.4%
54	Erie County	47.8	+4.1%
55	Lackawanna County	47.7	+4.4%
56	Forest County	47.6	+3.9%
57	Pike County	47.3	+3.3%
58	Elk County	47	+4%
59	Bradford County	46.7	+3.8%
59	Cameron County	46.7	+3.3%
61	Warren County	46.6	+3.8%
62	Susquehanna County	46.5	+3.6%
63	Wayne County	46.4	+3.6%
64	Tioga County	45.8	+3.9%
65	McKean County	45.7	+4.1%
66	Sullivan County	45.6	+4.3%
67	Potter County	45.4	+3.9%

Other periods

About this ranking

Mean air temperature from January to December, in degrees Fahrenheit: the average of the 12 monthly mean temperatures. 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, so a county with mountains and valleys has one value for very different local climates. 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 average temperature, 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 average temperature, counties (Counties in Pennsylvania by average annual temperature, 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 average temperature, counties, Counties in Pennsylvania by average annual temperature, 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/average-annual-temperature/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 average temperature, counties. Counties in Pennsylvania by average annual temperature, 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/average-annual-temperature/pennsylvania-counties?period=2015.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in Pennsylvania by average annual temperature, 2015 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/average-annual-temperature/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 average temperature, counties: Counties in Pennsylvania by average annual temperature, 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/average-annual-temperature/pennsylvania-counties?period=2015. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, 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 average temperature, counties: Counties in Pennsylvania by average annual temperature, 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/average-annual-temperature/pennsylvania-counties?period=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/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 average temperature, 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  -

Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Embed code

<iframe src="https://invokely.ai/embed/rankings/average-annual-temperature/pennsylvania-counties?period=2015" width="760" height="500" title="Counties in Pennsylvania by average annual temperature, 2015, chart from Invokely" loading="lazy" style="border:0;width:100%;max-width:760px" referrerpolicy="strict-origin-when-cross-origin"></iframe>

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Pennsylvania by average annual temperature using official data, and cite the source.

rank_places {"indicator":"average_temperature_annual","level":"province","within":"Pennsylvania","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=average_temperature_annual&level=province&within=Pennsylvania&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest average annual temperature?

Philadelphia County, with 56 °F in 2015, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Potter County, with 45.4 °F 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 average temperature, counties. Retrieved 2026-10-12.