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Hamilton Weather and climate
Data source：Meteostat
Update date：2025-09
Hamilton year round climate
- Spring (March–May): Average 36–57°F, climate transitioning from cold to warm, moderate rainfall. Common activities: Late maple leaf viewing, outdoor walks. Suggested clothing: Warm jacket, sweater, long pants.
- Summer (June–August): Average 65–71°F, warm and humid climate, most rainfall in July. Common activities: Outdoor picnics, hiking, water activities. Suggested clothing: Light and breathable clothing, rain gear.
- Autumn (September–November): Average 63–42°F, climate transitioning from mild to cool, decreased rainfall. Common activities: Maple leaf viewing, fruit picking. Suggested clothing: Jacket, comfortable long pants.
- Winter (December–February): Average -37–34°F, cold climate, low probability of snowfall, moderate rainfall. Common activities: Indoor activities, skiing (requires travel to other areas). Suggested clothing: Heavy coat, warm clothing, hat, gloves, scarf.
Hamilton climatological average
Annual average temperature: approx. 49.6°F / Annual rainfall: approx. 852 mm / Summer humidity: 65%–75% / Rainiest month: July
Hamilton monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
26.6°F
75.2
February
30.2°F
67.5
March
36.3°F
77.3
April
46.2°F
78
May
57.4°F
57
June
65.8°F
79.3
July
71.1°F
131.8
August
69.3°F
86.8
September
63.9°F
36.3
October
52°F
43.6
November
42.1°F
44.1
December
34.2°F
75.5
Hamilton weather for the next seven days
10/15
Wednesday
Sunny
64°F/47.1°F
10/16
Thursday
Sunny
63.1°F/39.7°F
10/17
Friday
Sunny
62.1°F/40.5°F
10/18
Saturday
Moderate rain
67.2°F/50.4°F
10/19
Sunday
Moderate rain
73.3°F/51.7°F
10/20
Monday
Patchy rain nearby
53.1°F/48.6°F
10/21
Tuesday
Patchy rain nearby
59.1°F/48.2°F
