Plainfield, PA
Full City Profile · Pennsylvania · Cumberland County County
3.7
/5.0
B+
Good
283
Population
435/sq mi density
$74,205
Median Income
$35,566 per capita
$160,600
Home Value
$323,473 Zillow
52°F
Avg Temperature
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$74,205 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$160,600 home value, /mo rent
C
Education
2.1 / 5.0
13.4% bachelor's degree or higher
Plainfield experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 29°F in January while summers reach 74°F in July. Annual precipitation totals 48.0 inches. The area receives 27.7 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
29°F Jan (-2°C)
74°F Jul (23°C)
| Annual Average | 51.9°F |
| 4% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 517 ft (158 m) |
| Area | 0.7 sq mi (1.7 km²) |
| Population Density | 435/sq mi |
| Coordinates | 40.2012°N, 77.2833°W |
| Timezone | America/New_York |
| County | Cumberland County County |
| Nearest Airport | Gettysburg Regional (GTY) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
| Good Days % | 72.6% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| PM2.5 (Fine Particles) | 9.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.2 / 100 |
| Social Vulnerability | 23.6 / 100 |
| Community Resilience | 96.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 3.1 in | Coldest |
| February | 31°F (-0°C) | 2.6 in | Driest |
| March | 40°F (4°C) | 4.1 in | |
| April | 51°F (10°C) | 3.8 in | |
| May | 61°F (16°C) | 4.7 in | |
| June | 70°F (21°C) | 4.4 in | |
| July | 74°F (23°C) | 5.5 in | Warmest, Wettest |
| August | 72°F (22°C) | 4.0 in | |
| September | 65°F (19°C) | 5.0 in | |
| October | 54°F (12°C) | 4.3 in | |
| November | 43°F (6°C) | 3.1 in | |
| December | 34°F (1°C) | 3.6 in |
Plainfield has a seasonal temperature swing of 45°F / from 29°F in January to 74°F in July. Total annual precipitation is 48.0 inches, with July being the wettest month (5.5") and February the driest (2.6").