Monthly climate averages for Stanstead, Canada. Based on 10-year ERA5 reanalysis data.
Dfb Warm-Summer Continental
Climate OverviewStanstead, Canada in December has cold conditions, with highs averaging around -1.1°C (30°F). Rain falls on about 14 days this month.
This month falls at the beginning of Winter. Cold conditions dominate the month.
Daily highs in December gradually drop from around 1°C (33°F) at the start to -1°C (29°F) by month's end.
December sees fairly even rainfall, totalling about 95 mm across the month.
The warmest days tend to fall around the 1th, averaging 1.9°C (35°F).
Compared to November, this month is about 6°C cooler with 0 fewer rainy days. Temperatures begin dropping heading into January.
Daily averages based on historical data (2016–2025)
Cold daytime highs of -1°C (30°F) mean shorter outdoor excursions with warming breaks. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.
3 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -4°C / -12°C | -8°C / -17°C | 14days (82 mm) Wet | 4.9h Fair | 79% Humid | 1.8 Low | Poor | View Details |
| February | -2°C / -11°C | -6°C / -16°C | 13days (78 mm) Wet | 6h Fair | 75% Muggy | 2.9 Moderate | Poor | View Details |
| March | 3°C / -6°C | -1°C / -11°C | 14days (90 mm) Wet | 7.1h Good | 72% Muggy | 3.8 Moderate | Poor | View Details |
| April | 10°C / 0°C | 6°C / -4°C | 15days (108 mm) Wet | 7.9h Good | 70% Muggy | 4.9 Moderate | Poor | View Details |
| May best | 17°C / 7°C | 16°C / 5°C | 13days (101 mm) Wet | 9.6h Good | 71% Muggy | 5.4 High | Good | View Details |
| June best | 22°C / 13°C | 22°C / 12°C | 15days (129 mm) Wet | 10.6h Excellent | 75% Muggy | 6.2 High | Good | View Details |
| July best | 25°C / 16°C | 26°C / 17°C | 15days (126 mm) Wet | 11.4h Excellent | 79% Humid | 6.8 High | Excellent | View Details |
| August best | 23°C / 15°C | 24°C / 15°C | 14days (115 mm) Wet | 10.5h Excellent | 79% Humid | 5.9 High | Excellent | View Details |
| September best | 20°C / 12°C | 20°C / 11°C | 9days (85 mm) Wet | 8.9h Good | 79% Humid | 4.9 Moderate | Excellent | View Details |
| October | 13°C / 6°C | 11°C / 3°C | 14days (125 mm) Wet | 6.2h Fair | 79% Humid | 3.2 Moderate | Fair | View Details |
| November | 5°C / -2°C | 1°C / -6°C | 14days (99 mm) Wet | 4.9h Fair | 79% Humid | 1.9 Low | Poor | View Details |
| December | -1°C / -9°C | -5°C / -14°C | 14days (95 mm) Wet | 4.3h Fair | 78% Humid | 1.5 Low | Poor | View Details |
Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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