Monthly climate averages for Devon, Canada. Based on 10-year ERA5 reanalysis data.
Dfb Warm-Summer Continental
Climate OverviewDevon, Canada in September has warm conditions, with highs averaging 20.9°C (70°F).
This month falls at the beginning of Autumn.
Daily highs in September gradually drop from around 23°C (73°F) at the start to 19°C (66°F) by month's end.
September sees fairly even rainfall, totalling about 81 mm across the month.
Expect around 9.7h of sunshine at the start of September, decreasing to 7.7h by the end.
The warmest days tend to fall around the 4th, averaging 22.8°C (73°F).
Compared to August, this month is about 4°C cooler with 3 fewer rainy days. Temperatures begin dropping heading into October.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 21°C (70°F) are ideal for full-day outdoor exploration.
Rain usually comes in shorter passing showers rather than all-day rain.
2 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 | -2°C / -11°C | -7°C / -16°C | 11days (102 mm) Wet | 5.3h Fair | 75% Muggy | 1.9 Low | Poor | View Details |
| February | -1°C / -11°C | -6°C / -16°C | 11days (87 mm) Wet | 6.6h Fair | 73% Muggy | 2.8 Moderate | Poor | View Details |
| March | 3°C / -6°C | -1°C / -10°C | 12days (108 mm) Wet | 7.2h Good | 72% Muggy | 3.5 Moderate | Poor | View Details |
| April | 10°C / 1°C | 6°C / -3°C | 12days (101 mm) Wet | 7.9h Good | 70% Muggy | 4.6 Moderate | Poor | View Details |
| May | 17°C / 7°C | 16°C / 4°C | 11days (96 mm) Wet | 9.1h Good | 69% Muggy | 5.4 High | Fair | View Details |
| June best | 22°C / 13°C | 22°C / 12°C | 13days (101 mm) Wet | 9.9h Good | 74% Muggy | 5.7 High | Excellent | View Details |
| July best | 26°C / 17°C | 27°C / 17°C | 12days (100 mm) Wet | 10.7h Excellent | 76% Humid | 6.5 High | Excellent | View Details |
| August best | 25°C / 16°C | 26°C / 16°C | 11days (92 mm) Wet | 9.9h Good | 76% Humid | 5.9 High | Excellent | View Details |
| September best | 21°C / 12°C | 20°C / 11°C | 8days (81 mm) Wet | 8.4h Good | 76% Humid | 4.8 Moderate | Excellent | View Details |
| October | 15°C / 7°C | 12°C / 4°C | 10days (99 mm) Wet | 6.6h Fair | 77% Humid | 3.2 Moderate | Fair | View Details |
| November | 6°C / 0°C | 2°C / -5°C | 11days (109 mm) Wet | 5.2h Fair | 76% Humid | 1.8 Low | Poor | View Details |
| December | 0°C / -7°C | -4°C / -12°C | 12days (113 mm) Wet | 4.7h Fair | 75% Muggy | 1.5 Low | Poor | View Details |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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