Weather & Climate in Johnstown, OH
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Johnstown experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 30°F in January while summers reach 75°F in July. Annual precipitation totals 40.9 inches. The area receives 25.8 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 42. 84% of days have good air quality. The city sits at an elevation of 1,134 feet.
Temperature
30°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 53.2°F |
| 1% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 1,134 ft (346 m) |
| Area | 3.0 sq mi (7.7 km²) |
| Population Density | 1,755/sq mi |
| Coordinates | 40.1491°N, 82.6869°W |
| Timezone | America/New_York |
| County | Licking County County |
| Nearest Airport | John Glenn Columbus International (CMH) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 83.7% |
| Unhealthy Days | 0 |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.9 / 100 |
| Social Vulnerability | 19.2 / 100 |
| Community Resilience | 83.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
25 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.
| Feb 19, 1995 | 8 km SSE of Rocky Fork Point, Ohio | M3.6 | 133 km | 10 km |
| Nov 20, 2013 | 2 km SW of Buchtel, Ohio | M3.5 | 89 km | 8 km |
| Jun 3, 2017 | 1 km WNW of Batesville, Ohio | M3.4 | 121 km | 2 km |
| Apr 24, 2009 | 7 km ENE of Rio Grande, Ohio | M3.4 | 143 km | 8 km |
| May 24, 2017 | 1 km S of McArthur, Ohio | M3.4 | 104 km | 10 km |
| Aug 31, 2011 | 3 km SE of Lowell, Ohio | M3.1 | 126 km | 5 km |
| Apr 22, 2025 | 3 km ESE of Buffalo, Ohio | M3.1 | 106 km | 5 km |
| Apr 24, 2025 | 3 km S of Pleasant City, Ohio | M3.1 | 102 km | 6 km |
| Feb 3, 2025 | 2 km NNW of Oak Hill, Ohio | M3.1 | 137 km | 26 km |
| Apr 2, 2017 | 5 km W of Graysville, Ohio | M3.0 | 134 km | 4 km |
| Jun 5, 2011 | 5 km W of Lodi, Ohio | M3.0 | 111 km | 5 km |
| May 9, 2025 | 3 km S of Pleasant City, Ohio | M2.9 | 102 km | 5 km |
| Apr 4, 1994 | 2 km WNW of Minster, Ohio | M2.9 | 148 km | 5 km |
| May 6, 2002 | 3 km SE of Racine, Ohio | M2.8 | 150 km | 5 km |
| Feb 3, 2025 | 0 km NE of Reno, Ohio | M2.8 | 140 km | 10 km |
| Aug 31, 2011 | 2 km NNW of Belmont, West Virginia | M2.8 | 147 km | 5 km |
| Apr 29, 2025 | 1 km SE of Pleasant City, Ohio | M2.8 | 103 km | 2 km |
| May 12, 2006 | 2 km E of Lima, Ohio | M2.8 | 135 km | 5 km |
| Nov 25, 1998 | 1 km SSW of New London, Ohio | M2.7 | 105 km | 5 km |
| May 14, 2010 | 1 km ENE of Gibsonburg, Ohio | M2.7 | 147 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
372 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 10 fatalities, 389 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 10, 2002 | EF3 | 77 km | 9.0 mi | 0 |
| Oct 13, 1999 | EF3 | 66 km | 3.6 mi | 0 |
| May 31, 1985 | EF3 | 4 km | 29.0 mi | 1 |
| Jun 13, 1981 | EF3 | 43 km | 3.8 mi | 4 |
| May 10, 1973 | EF3 | 98 km | 89.6 mi | 0 |
| Feb 22, 1971 | EF3 | 29 km | 6.8 mi | 0 |
| Sep 3, 1970 | EF3 | 61 km | 2.3 mi | 0 |
| Nov 16, 1965 | EF3 | 99 km | 3.8 mi | 0 |
| Jun 5, 2024 | EF2 | 47 km | 1.3 mi | 0 |
| Mar 14, 2024 | EF2 | 75 km | 19.5 mi | 0 |
| Mar 14, 2024 | EF2 | 93 km | 10.3 mi | 0 |
| Feb 28, 2024 | EF2 | 100 km | 21.1 mi | 0 |
| Feb 28, 2024 | EF2 | 18 km | 14.0 mi | 0 |
| Jun 8, 2022 | EF2 | 86 km | 9.1 mi | 0 |
| May 27, 2019 | EF2 | 71 km | 5.3 mi | 0 |
| Apr 14, 2019 | EF2 | 77 km | 17.0 mi | 0 |
| Nov 5, 2017 | EF2 | 65 km | 1.1 mi | 0 |
| Sep 4, 2017 | EF2 | 73 km | 16.7 mi | 0 |
| Apr 20, 2011 | EF2 | 23 km | 3.9 mi | 0 |
| Sep 16, 2010 | EF2 | 50 km | 7.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
4 wildfires (100+ acres) recorded within 100 km. Largest: LONG RIDGE RX UNIT 37-38 (1,050 acres, 2022).
| Year | Name | Acres Burned | Distance |
| 2022 | LONG RIDGE RX UNIT 37-38 | 1,050 | 88 km |
| 2021 | LONG RIDGE RX UNIT 1-12 | 1,037 | 85 km |
| 2022 | LONG RIDGE RX UNIT 11-19 | 936 | 85 km |
| 2022 | LONG RIDGE RX UNIT 24 | 709 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.1 in | Coldest |
| February | 33°F (0°C) | 2.3 in | Driest |
| March | 42°F (5°C) | 3.6 in | |
| April | 53°F (12°C) | 3.6 in | |
| May | 63°F (17°C) | 4.1 in | |
| June | 72°F (22°C) | 4.0 in | |
| July | 75°F (24°C) | 4.2 in | Warmest, Wettest |
| August | 73°F (23°C) | 4.0 in | |
| September | 66°F (19°C) | 3.3 in | |
| October | 55°F (13°C) | 2.9 in | |
| November | 44°F (6°C) | 2.8 in | |
| December | 35°F (2°C) | 3.2 in |
Johnstown has a seasonal temperature swing of 45°F / from 30°F in January to 75°F in July. Total annual precipitation is 40.9 inches, with July being the wettest month (4.2") and February the driest (2.3").