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Weather & Climate in Stephenville, NL
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Stephenville has a cool climate with an average annual temperature of 44°F (6°C). Winters average 29°F in January while summers reach 67°F in July. The area gets 165 sunny days per year, below the national average of 205. Annual precipitation totals 76.2 inches (wetter than the 38-inch national average). The area receives 115.7 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 49 feet.
Temperature
29°F Jan (-2°C)
67°F Jul (19°C)
| Annual Average | 43.6°F |
| 19% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 165 days/yr |
Geography
| Elevation | 49 ft (15 m) |
| Area | 13.6 sq mi (35.3 km²) |
| Population Density | 480/sq mi |
| Coordinates | 48.5500°N, 58.5818°W |
| Timezone | America/St_Johns |
Precipitation & Snow
Air Quality
Hurricane History
3 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2009 | Bill | Category 1 | 75 mph | 255 km |
| 2002 | Gustav | Category 1 | 86 mph | 106 km |
| 2000 | Michael | Category 1 | — | 279 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 5.4 in | |
| February | 17°F (-8°C) | 4.1 in | Coldest |
| March | 24°F (-4°C) | 3.7 in | |
| April | 33°F (1°C) | 3.0 in | Driest |
| May | 43°F (6°C) | 4.1 in | |
| June | 52°F (11°C) | 4.2 in | |
| July | 67°F (19°C) | 4.7 in | Warmest |
| August | 60°F (15°C) | 4.9 in | |
| September | 52°F (11°C) | 5.6 in | Wettest |
| October | 43°F (6°C) | 5.6 in | |
| November | 34°F (1°C) | 5.3 in | |
| December | 25°F (-4°C) | 5.2 in |
Stephenville has a seasonal temperature swing of 49°F / from 17°F in February to 67°F in July. Total annual precipitation is 55.9 inches, with September being the wettest month (5.6") and April the driest (3.0").