Current Conditions

Karuizawa, Nagano

69°F21°C

Rain

Wind

W 2 mph4 km/h

Humidity

95%

Cloud Cover

96%

As of Wednesday, September 9, 2026 at 5:01 AM GMT+9

Today's Outlook

Day

Overcast and warm, with a high of 72°F22°C and morning low of 65°F19°C. Breezy from the NW at 5 to 7 mph8 to 11 km/h. 100% chance of rain throughout the day. Humid.

Night

Overcast, with a low around 62°F16°C. Light wind from the NW around 4 mph6 km/h. 100% chance of rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 72°F22°C	Low 62°F16°C	Precip 1.35 in34.3 mm100%	Cloud 97%	Wind NW 4 mph7 km/h	Wednesday: Overcast and warm, with a high of 72°F22°C and morning low of 65°F19°C. Breezy from the NW at 5 to 7 mph8 to 11 km/h. 100% chance of rain throughout the day. Humid. Wednesday Night: Overcast, with a low around 62°F16°C. Light wind from the NW around 4 mph6 km/h. 100% chance of rain throughout the night.
Light Rain	High 63°F17°C	Low 59°F15°C	Precip 0.36 in9.2 mm68%	Cloud 91%	Wind E 4 mph6 km/h	Thursday: Overcast and mild, with a high of 63°F17°C. Light wind from the ESE around 4 mph6 km/h. 68% chance of light rain throughout the day. Thursday Night: Overcast, with a low around 60°F15°C. Light wind from the NE around 4 mph6 km/h. 56% chance of light rain throughout the night.
Rain	High 68°F20°C	Low 59°F15°C	Precip 0.72 in18.4 mm89%	Cloud 92%	Wind ENE 2 mph4 km/h	Friday: Overcast and warm, with a high of 68°F20°C and morning low of 59°F15°C. Light wind from the NNE around 2 mph4 km/h. 89% chance of rain throughout the day. Friday Night: Overcast, with a low around 59°F15°C. Light wind from the E around 2 mph4 km/h. 68% chance of rain throughout the night.
Light Rain	High 71°F22°C	Low 63°F17°C	Precip 0.16 in4.1 mm71%	Cloud 88%	Wind E 3 mph4 km/h	Saturday: Overcast and warm, with a high of 71°F22°C and morning low of 63°F17°C. Light wind from the E around 3 mph5 km/h. 71% chance of light rain throughout the day. Saturday Night: Overcast, with a low around 63°F17°C. Light wind from the E around 2 mph4 km/h. 61% chance of light rain throughout the night.
Light Rain	High 73°F23°C	Low 64°F18°C	Precip 0.15 in3.7 mm57%	Cloud 87%	Wind ESE 3 mph5 km/h	Sunday: Overcast and warm, with a high of 73°F23°C and morning low of 64°F18°C. Light wind from the ESE around 4 mph6 km/h. 55% chance of light rain throughout the day. Sunday Night: Overcast, with a low around 64°F18°C. Light wind from the ESE around 3 mph5 km/h. 57% chance of drizzle throughout the night.
Light Rain	High 77°F25°C	Low 66°F19°C	Precip 0.24 in6.1 mm86%	Cloud 80%	Wind SSE 2 mph4 km/h	Monday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 66°F19°C. Light wind from the SW around 2 mph4 km/h. 86% chance of light rain throughout the day. Humid. Monday Night: Overcast, with a low around 66°F19°C. Light wind from the E around 2 mph3 km/h. 84% chance of light rain throughout the night.
Rain	High 71°F22°C	Low 66°F19°C	Precip 0.56 in14.3 mm97%	Cloud 96%	Wind E 2 mph3 km/h	Tuesday: Overcast and warm, with a high of 71°F22°C and morning low of 67°F19°C. Light wind from the E around 2 mph4 km/h. 96% chance of rain throughout the day. Humid. Tuesday Night: Overcast, with a low around 66°F19°C. Light wind from the E around 2 mph3 km/h. 97% chance of rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	72°F22°C	62°F16°C	1.35 in34.3 mm· 100%	97%	Rain	NW 4 mph7 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 65°F19°C. Breezy from the NW at 5 to 7 mph8 to 11 km/h. 100% chance of rain throughout the day. Humid. NightOvercast, with a low around 62°F16°C. Light wind from the NW around 4 mph6 km/h. 100% chance of rain throughout the night.
	ThursdaySep 10	63°F17°C	59°F15°C	0.36 in9.2 mm· 68%	91%	Light Rain	E 4 mph6 km/h
DayOvercast and mild, with a high of 63°F17°C. Light wind from the ESE around 4 mph6 km/h. 68% chance of light rain throughout the day. NightOvercast, with a low around 60°F15°C. Light wind from the NE around 4 mph6 km/h. 56% chance of light rain throughout the night.
	FridaySep 11	68°F20°C	59°F15°C	0.72 in18.4 mm· 89%	92%	Rain	ENE 2 mph4 km/h
DayOvercast and warm, with a high of 68°F20°C and morning low of 59°F15°C. Light wind from the NNE around 2 mph4 km/h. 89% chance of rain throughout the day. NightOvercast, with a low around 59°F15°C. Light wind from the E around 2 mph4 km/h. 68% chance of rain throughout the night.
	SaturdaySep 12	71°F22°C	63°F17°C	0.16 in4.1 mm· 71%	88%	Light Rain	E 3 mph4 km/h
DayOvercast and warm, with a high of 71°F22°C and morning low of 63°F17°C. Light wind from the E around 3 mph5 km/h. 71% chance of light rain throughout the day. NightOvercast, with a low around 63°F17°C. Light wind from the E around 2 mph4 km/h. 61% chance of light rain throughout the night.
	SundaySep 13	73°F23°C	64°F18°C	0.15 in3.7 mm· 57%	87%	Light Rain	ESE 3 mph5 km/h
DayOvercast and warm, with a high of 73°F23°C and morning low of 64°F18°C. Light wind from the ESE around 4 mph6 km/h. 55% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the ESE around 3 mph5 km/h. 57% chance of drizzle throughout the night.
	MondaySep 14	77°F25°C	66°F19°C	0.24 in6.1 mm· 86%	80%	Light Rain	SSE 2 mph4 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 66°F19°C. Light wind from the SW around 2 mph4 km/h. 86% chance of light rain throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the E around 2 mph3 km/h. 84% chance of light rain throughout the night.
	TuesdaySep 15	71°F22°C	66°F19°C	0.56 in14.3 mm· 97%	96%	Rain	E 2 mph3 km/h
DayOvercast and warm, with a high of 71°F22°C and morning low of 67°F19°C. Light wind from the E around 2 mph4 km/h. 96% chance of rain throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the E around 2 mph3 km/h. 97% chance of rain throughout the night.
	WednesdaySep 16	69°F21°C	64°F18°C	0.68 in17.2 mm· 98%	97%	Rain	E 3 mph4 km/h
DayOvercast and warm, with a high of 69°F21°C and morning low of 64°F18°C. Light wind from the E around 3 mph4 km/h. 98% chance of rain throughout the day. NightOvercast, with a low around 65°F18°C. Light wind from the ESE around 2 mph4 km/h. 97% chance of rain throughout the night.
	ThursdaySep 17	68°F20°C	63°F17°C	0.62 in15.8 mm· 89%	94%	Rain	E 3 mph4 km/h
DayOvercast and warm, with a high of 68°F20°C and morning low of 63°F17°C. Light wind from the E around 3 mph5 km/h. 89% chance of rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the E around 3 mph4 km/h. 78% chance of light rain throughout the night.
	FridaySep 18	68°F20°C	62°F17°C	0.49 in12.4 mm· 72%	90%	Light Rain	ENE 3 mph5 km/h
DayOvercast and mild, with a high of 68°F20°C and morning low of 62°F17°C. Light wind from the ENE around 4 mph6 km/h. 72% chance of light rain throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the E around 3 mph5 km/h. 71% chance of light rain throughout the night.
	SaturdaySep 19	67°F20°C	61°F16°C	0.93 in23.7 mm· 68%	86%	Rain	ENE 4 mph6 km/h
DayOvercast and mild, with a high of 67°F20°C and morning low of 61°F16°C. Light wind from the NE around 4 mph7 km/h. 66% chance of rain throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the E around 4 mph6 km/h. 68% chance of rain throughout the night.
	SundaySep 20	67°F20°C	61°F16°C	1.05 in26.6 mm· 68%	86%	Rain	E 5 mph8 km/h
DayOvercast and mild, with a high of 67°F20°C and morning low of 61°F16°C. Light wind from the E around 5 mph8 km/h. 68% chance of rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the E around 4 mph7 km/h. 66% chance of rain throughout the night.
	MondaySep 21	69°F21°C	61°F16°C	0.78 in19.8 mm· 62%	79%	Rain	ESE 4 mph7 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 61°F16°C. Light wind from the ESE around 5 mph8 km/h. 60% chance of rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the E around 4 mph7 km/h. 62% chance of rain throughout the night.
	TuesdaySep 22	70°F21°C	60°F15°C	0.45 in11.4 mm· 46%	71%	Light Rain	N 4 mph6 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 60°F15°C. Light wind from the N around 4 mph7 km/h. 46% chance of light rain throughout the day. NightMostly cloudy, with a low around 60°F16°C. Light wind from the NNE around 4 mph6 km/h. 42% chance of light rain throughout the night.
	WednesdaySep 23	71°F21°C	58°F15°C	0.17 in4.4 mm· 39%	66%	Showers	N 3 mph5 km/h
DayMostly cloudy and warm, with a high of 71°F21°C and morning low of 58°F15°C. Light wind from the NNW around 4 mph6 km/h. 39% chance of showers throughout the day. NightMostly cloudy, with a low around 59°F15°C. Light wind from the NNE around 3 mph5 km/h. 31% chance of showers throughout the night.

Nearby Cities

Miyota7 mi11 km Komoro11 mi18 km Saku12 mi20 km Annaka15 mi24 km Tōmi15 mi24 km Tomioka16 mi26 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 36.3500°N, 138.6333°E·Elevation: 952m·Timezone: Asia/Tokyo·Population: 20,023