Spring (March–May): Average 37–57°F, the climate transitions from cold to mild. Temperatures rise from March to May, but significant temperature differences remain. Common activities: Picnics, flower viewing (e.g., cherry blossoms, depending on blooming conditions). Recommended clothing: Warm jacket, sweater, long pants; light jacket when sunny.
Summer (June–August): Average 65–76°F, the climate is warm and humid with relatively high rainfall, particularly in August. Common activities: Hiking, stream activities, visiting summer resorts. Recommended clothing: Light and breathable clothing, rain gear.
Autumn (September–November): Average 55–68°F, the climate is comfortable and pleasant, but rainfall remains relatively high, and temperatures begin to drop. Common activities: Maple leaf viewing (depending on leaf conditions), hiking. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -3.1–-34.3°F, the climate is cold and dry with a higher probability of snowfall; pay attention to keeping warm. Common activities: Skiing, onsen experiences (depending on snow conditions). Recommended clothing: Heavy warm clothing, snow boots, hat, scarf, and gloves.
Shiroishi Ward climatological average
Annual average temperature: approx. 50.9°F / Annual rainfall: approx. 1083 mm / Summer humidity: 70%–80% / Rainiest month: August
Shiroishi Ward monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
26.4°F
132
February
27.9°F
111
March
37°F
53
April
49.3°F
37
May
57.7°F
43
June
65.1°F
81
July
74.1°F
89.7
August
76.5°F
135.3
September
68.7°F
103
October
55.8°F
109.7
November
43.9°F
114.7
December
29.7°F
73.7
Shiroishi Ward weather for the next seven days
11/7
Friday
Moderate rain
42.6°F/33.1°F
11/8
Saturday
Moderate rain
38.6°F/30.6°F
11/9
Sunday
Patchy rain nearby
47.2°F/29.7°F
11/10
Monday
Patchy rain nearby
43.2°F/36.9°F
11/11
Tuesday
Patchy rain nearby
42.5°F/32.5°F
11/12
Wednesday
Patchy rain nearby
43.8°F/31.3°F
11/13
Thursday
Patchy rain nearby
48.1°F/31.3°F
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