Spring (March–May): Average 38–56°F, mild but still chilly, increasing rainfall. Common activities: Hiking, flower viewing (e.g., cherry blossoms, depending on blooming conditions). Recommended clothing: Warm jacket, sweater, long pants.
Summer (June–August): Average 64–76°F, warm and humid, with the most rainfall in August. Common activities: Outdoor activities, but be mindful of rain. Recommended clothing: Light and breathable clothing, rain gear.
Autumn (September–November): Average 56–69°F, comfortable and pleasant, but with a larger temperature difference between morning and evening. Common activities: Maple leaf viewing (depending on leaf color change), hiking and trekking. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -2.0–-33.3°F, cold, with a low probability of snowfall. Common activities: Skiing (depending on snow conditions), indoor activities. Recommended clothing: Heavy coat, warm clothing, hat, gloves, scarf.
Onuma climatological average
Annual average temperature: approx. 51.4°F / Annual rainfall: approx. 1172 mm / Summer humidity: 70%–80% / Rainiest month: August
Onuma monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
28.4°F
94
February
29.7°F
36
March
38.1°F
64.7
April
49.3°F
44.3
May
56.7°F
72
June
64.2°F
129.3
July
72.9°F
93.7
August
76.1°F
245
September
69.4°F
94.3
October
56.7°F
116.7
November
44.8°F
99.7
December
30.7°F
83
Onuma weather for the next seven days
12/23
Tuesday
Sunny
35.5°F/29.9°F
12/24
Wednesday
Moderate rain
50.1°F/38°F
12/25
Thursday
Patchy rain nearby
37.2°F/33°F
12/26
Friday
Blizzard
36.1°F/19.6°F
12/27
Saturday
Moderate or heavy snow showers
25.3°F/20°F
12/28
Sunday
Blowing snow
36.2°F/27°F
12/29
Monday
Patchy rain nearby
40.7°F/29.8°F
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