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Hamilton Weather, Climate and Best Time to Visit

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

1/19
Monday
Light freezing rain
23.4°F/12.9°F
1/20
Tuesday
Partly Cloudy
15.8°F/8.2°F
1/21
Wednesday
Blowing snow
32°F/11.7°F
1/22
Thursday
Light freezing rain
27.3°F/8.5°F
1/23
Friday
Moderate snow
36.5°F/3.1°F
1/24
Saturday
Patchy moderate snow
32.9°F/-0.6°F
1/25
Sunday
Heavy snow
14.4°F/-7.7°F