PlainClimate
NOAA 1991–2020 normals 46°F annual avg Public-domain federal data

Port Allegany, PA Climate

Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →

46°F
Avg annual temp
54/100
Comfort score
42.6"
Annual precip
144d
Growing season

30-year climate normals from 1 weather station (1991-2020).

The climate verdict for Port Allegany

Port Allegany, Pennsylvania averages 46°F a year and scores 54/100 on the comfort index - moderate, milder than 27% of U.S. cities.

46°F
annual average temperature (NOAA normal)
54/100
comfort score, milder than 27% of U.S. cities
42.6"
annual precipitation · 55" snow
144 days
frost-free days per growing season

Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.

Avg Temperature

46°F (8°C)

Avg High

57°F

Avg Low

35°F

Annual Precip

42.6"

Annual Snow

55.1"

Comfort Score

54/100

Moderate

Climate Comfort Score

54/100

Moderate

Avg Annual Temperature

46°F

30-year mean (NOAA NCEI)

Annual Precipitation

42.6"

Plus 55.1" of snow

Comfort score vs national 100-point ceiling (Port Allegany) 54.0%
National median (63)

PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Port Allegany area.

How Port Allegany compares to every U.S. city

Port Allegany's comfort score vs. all U.S. cities

PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals

54 Top 73% higher than 27% of 6,915 US cities

0–10: 0 US cities (0%). Below this entry. 10–20: 0 US cities (0%). Below this entry. 20–30: 58 US cities (1%). Below this entry. 30–40: 439 US cities (6%). Below this entry. 40–50: 1,302 US cities (19%). Below this entry. 50–60: 1,433 US cities (21%). This entry sits in this band. 60–70: 1,357 US cities (20%). Above this entry. 70–80: 1,102 US cities (16%). Above this entry. 80–90: 778 US cities (11%). Above this entry. 90–100: 420 US cities (6%). Above this entry. This city 0 100 every U.S. city, bucketed by value

Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020

Warming context for Port Allegany

Methodology

Port Allegany's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running warmer than the 30-year mean.

Warming context, U.S. vs global, with Paris reference lines Anomaly chart from 1900 to 2024. Local series shows warming of 0.11 °C per decade versus a global rate of 0.11 °C per decade (ratio 1.00). Paris Agreement thresholds at 1.5 and 2.0 °C are dashed. -1.0°C -0.5°C +0.0°C +0.5°C +1.0°C +1.5°C +2.0°C +2.5°C Paris 1.5°C Paris 2.0°C 1900192019401960198020002020
  • United States land mean (NOAA NCEI) +0.11 °C/decade
  • Global anomaly (NASA GISTEMP) +0.11 °C/decade
  • Paris Agreement thresholds 1.5°C / 2.0°C
Sources: NOAA NCEI, NASA GISTEMP. Paris thresholds per IPCC AR6 WG1.

Monthly Temperatures

Average daily high and low temperatures by month

Month Avg High Avg Low Mean
January 31°F (-1°C) 14°F (-10°C) 22°F (-5°C)
February 34°F (1°C) 15°F (-10°C) 24°F (-4°C)
March 43°F (6°C) 22°F (-5°C) 33°F (0°C)
April 57°F (14°C) 31°F (0°C) 44°F (7°C)
May 68°F (20°C) 43°F (6°C) 55°F (13°C)
June 76°F (24°C) 52°F (11°C) 64°F (18°C)
July 80°F (26°C) 56°F (13°C) 68°F (20°C)
August 78°F (26°C) 55°F (13°C) 66°F (19°C)
September 71°F (22°C) 48°F (9°C) 60°F (15°C)
October 59°F (15°C) 37°F (3°C) 48°F (9°C)
November 47°F (8°C) 28°F (-2°C) 38°F (3°C)
December 36°F (2°C) 21°F (-6°C) 28°F (-2°C)

Monthly Precipitation

Average monthly rainfall and snowfall

January 3.0"

Snow: 14.1"

16.1 days with precipitation

February 2.3"

Snow: 12.1"

13.3 days with precipitation

March 3.0"

Snow: 9.4"

13.8 days with precipitation

April 3.5"

Snow: 1.7"

13.7 days with precipitation

May 3.8"

13.5 days with precipitation

June 4.2"

13.7 days with precipitation

July 4.5"

12.6 days with precipitation

August 4.1"

12.2 days with precipitation

September 3.7"

12.1 days with precipitation

October 3.9"

Snow: 0.6"

15.0 days with precipitation

November 3.3"

Snow: 3.9"

13.6 days with precipitation

December 3.2"

Snow: 13.3"

15.8 days with precipitation

Frost Dates & Growing Season

First Fall Freeze

October 6

50% probability date

Last Spring Freeze

May 15

50% probability date

Growing Season

144 days

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

7,278

Higher = more heating needed

Cooling Degree Days

302

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

What Port Allegany's climate means for you

Port Allegany runs 46°F a year - peaking in July, coldest in January.

  • Gardeners get about 144 frost-free days, with the last spring freeze near May 15 - plan the planting calendar around it, not the regional average.
  • Energy bills track 7,278 heating and 302 cooling degree days a year, higher means the furnace or AC runs more.
  • Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings

These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.

Climate Guides

Climate Insight: Port Allegany, PA

Port Allegany, Pennsylvania runs an annual average of 46°F, ranging from a mean daily high of 57°F to a mean daily low of 35°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00367103, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.

Beyond temperature, Port Allegany averages 42.6 inches of precipitation annually, with 55.1 inches typically falling as snow - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 144 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 15 and the first fall freeze near October 6. Turning to energy use, 7,278 heating degree days and 302 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Port Allegany scores 54/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.

Frequently Asked Questions

What is the average temperature in Port Allegany, PA?
The average annual temperature in Port Allegany, Pennsylvania is 46°F. The warmest month averages 80°F (26°C) and the coldest averages 14°F (-10°C).
How much rain does Port Allegany get?
Port Allegany receives 42.6 inches of precipitation annually, including 55.1 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Port Allegany?
Port Allegany has a climate comfort score of 54/100 (Moderate), milder than 27% of U.S. cities in the PlainClimate database.
When is the growing season in Port Allegany?
Port Allegany has approximately 144 frost-free days per year, with the last spring freeze around May 15 and the first fall freeze around October 6.
How much energy does heating and cooling require in Port Allegany?
Port Allegany has 7,278 heating degree days and 302 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Port Allegany climate data come from?
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00367103 near Port Allegany.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00367103. For informational purposes only.

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial

Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.