Hay River Climate: A Detailed Look at Subarctic Weather Patterns
Hay River is characterized by a subarctic climate (classified as Dfc), a weather pattern defined by long, frigid winters and short, mild to warm summers. Located at an elevation of 164.9 meters (541 feet), the region experiences extreme temperature swings that dictate the pace of life and the natural environment of the Northwest Territories.
The climate data for the region is primarily recorded at the Hay River/Merlyn Carter Airport (WMO ID: 71935), with historical records dating back to 1893. This long-term data provides a comprehensive view of the area's meteorological extremes and seasonal norms.
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Key Facts
- Climate Classification: Subarctic (Dfc).
- Temperature Extremes: Record high of 36.7°C (98.1°F) and record low of -52.2°C (-62.0°F).
- Annual Precipitation: Average of 320.3 mm (12.61 inches).
- Coldest Month: January, with a mean daily minimum of -25.8°C (-14.4°F).
- Warmest Month: July, with a mean daily maximum of 21.7°C (71.1°F).
- Wind Chill: Record low wind chill reached -60.4°C.
Seasonal Weather Breakdown
Winter: Long and Severe
Winters in Hay River are long and intensely cold. From November through March, mean daily maximums often hover well below freezing, with January seeing an average high of only -16.9°C (1.6°F). The region is prone to extreme cold snaps, with record lows plummeting to -52.2°C. Snowfall is a dominant feature of this season, particularly in November, which sees an average snowfall of 145.5 cm.
Spring and Autumn: Rapid Transitions
The transition seasons are brief. Spring begins in April, where temperatures start to climb above freezing (mean daily maximum of 2.4°C), while autumn arrives quickly in October, with mean daily maximums dropping to 4.3°C. These periods are marked by a shift from snow to rain, though snowfall can still occur in early spring and late autumn.
Summer: Mild to Warm
Summers are the most hospitable time of year, peaking in July. During this month, the mean daily maximum reaches 21.7°C (71.1°F), and the record high humidex—a measure of how hot it feels when humidity is combined with air temperature—has reached 44.6. July and August also receive the highest amount of precipitation, with August averaging 59.7 mm.
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Climate Data Summary
| Metric | Coldest (Jan) | Warmest (Jul) | Annual Average/Record |
|---|---|---|---|
| Mean Daily Max Temp (°C) | -16.9 | 21.7 | 2.7 (Yearly Mean) |
| Mean Daily Min Temp (°C) | -25.8 | 11.5 | -7.0 (Yearly Mean) |
| Average Precipitation (mm) | 16.6 | 41.9 | 320.3 (Total) |
| Record Temperature (°C) | -52.2 (Low) | 35.6 (High) | -52.2 to 36.7 (Range) |
Frequently Asked Questions
What is the coldest temperature ever recorded in Hay River?
The record low temperature recorded in Hay River is -52.2°C (-62.0°F), with wind chill factors reaching as low as -60.4°C.
When is the warmest time to visit Hay River?
July is the warmest month, featuring a mean daily maximum temperature of 21.7°C (71.1°F) and the highest record humidex of 44.6.
How much snow does Hay River get annually?
While total precipitation is 320.3 mm, snowfall is significant during winter months, with November being particularly heavy, averaging 145.5 cm of snow.
What does a 'Dfc' climate classification mean?
A Dfc classification refers to a subarctic climate, which typically features short, cool summers and long, very cold winters, common in high-latitude regions.
Which month has the most precipitation?
August is the wettest month on average, receiving 59.7 mm (2.35 inches) of precipitation.