Current Conditions

Karuizawa, Nagano

69°F21°C

Drizzle

Wind

NW 8 mph13 km/h

Humidity

69%

Cloud Cover

37%

As of Tuesday, September 22, 2026 at 9:43 AM GMT+9

Today's Outlook

Day

Partly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the NW at 7 to 8 mph12 to 13 km/h.

Night

Partly cloudy, with a low around 62°F17°C. Breezy from the NW at 5 to 8 mph8 to 13 km/h. 17% chance of drizzle overnight.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 74°F23°C	Low 62°F17°C	Precip 0.01 in0.3 mm17%	Cloud 41%	Wind NW 6 mph10 km/h	Tuesday: Partly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the NW at 7 to 8 mph12 to 13 km/h. Tuesday Night: Partly cloudy, with a low around 62°F17°C. Breezy from the NW at 5 to 8 mph8 to 13 km/h. 17% chance of drizzle overnight.
Drizzle	High 68°F20°C	Low 60°F16°C	Precip 0.1 in2.6 mm54%	Cloud 78%	Wind ESE 3 mph5 km/h	Wednesday: Overcast and warm, with a high of 68°F20°C and morning low of 60°F16°C. Light wind from the ESE around 4 mph6 km/h. 54% chance of drizzle throughout the day. Wednesday Night: Mostly cloudy, with a low around 60°F16°C. Light wind from the E around 2 mph4 km/h. 40% chance of drizzle throughout the night.
Light Rain	High 73°F23°C	Low 62°F17°C	Precip 0.13 in3.3 mm69%	Cloud 76%	Wind N 3 mph4 km/h	Thursday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 62°F17°C. Light wind from the NNW around 3 mph5 km/h. 69% chance of showers throughout the day. Thursday Night: Overcast, with a low around 62°F17°C. Light wind from the NNE around 2 mph4 km/h. 38% chance of drizzle throughout the night.
Light Rain	High 70°F21°C	Low 61°F16°C	Precip 0.21 in5.3 mm70%	Cloud 89%	Wind NNE 2 mph4 km/h	Friday: Overcast and warm, with a high of 70°F21°C and morning low of 61°F16°C. Light wind from the NE around 2 mph4 km/h. 57% chance of light rain throughout the day. Friday Night: Overcast, with a low around 62°F17°C. Light wind from the NNE around 3 mph4 km/h. 70% chance of light rain throughout the night.
Rain	High 61°F16°C	Low 58°F14°C	Precip 1.04 in26.4 mm95%	Cloud 100%	Wind ESE 3 mph4 km/h	Saturday: Overcast and mild, with a high of 61°F16°C. Light wind from the ESE around 3 mph5 km/h. 95% chance of rain throughout the day. Saturday Night: Overcast, with a low around 58°F14°C. Light wind from the ESE around 2 mph4 km/h. 91% chance of rain throughout the night.
Rain	High 64°F18°C	Low 57°F14°C	Precip 0.71 in18.1 mm75%	Cloud 97%	Wind ESE 2 mph4 km/h	Sunday: Overcast and mild, with a high of 64°F18°C and morning low of 57°F14°C. Light wind from the SE around 3 mph4 km/h. 70% chance of rain throughout the day. Sunday Night: Overcast, with a low around 57°F14°C. Light wind from the ESE around 2 mph3 km/h. 75% chance of rain throughout the night.
Light Rain	High 69°F21°C	Low 60°F15°C	Precip 0.33 in8.5 mm63%	Cloud 92%	Wind WNW 3 mph4 km/h	Monday: Overcast and warm, with a high of 69°F21°C and morning low of 60°F15°C. Light wind from the WNW around 3 mph5 km/h. 60% chance of light rain throughout the day. Monday Night: Overcast, with a low around 60°F15°C. Light wind from the WNW around 3 mph4 km/h. 63% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 22	74°F23°C	62°F17°C	0.01 in0.3 mm· 17%	41%	Drizzle	NW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the NW at 7 to 8 mph12 to 13 km/h. NightPartly cloudy, with a low around 62°F17°C. Breezy from the NW at 5 to 8 mph8 to 13 km/h. 17% chance of drizzle overnight.
	WednesdaySep 23	68°F20°C	60°F16°C	0.1 in2.6 mm· 54%	78%	Drizzle	ESE 3 mph5 km/h
DayOvercast and warm, with a high of 68°F20°C and morning low of 60°F16°C. Light wind from the ESE around 4 mph6 km/h. 54% chance of drizzle throughout the day. NightMostly cloudy, with a low around 60°F16°C. Light wind from the E around 2 mph4 km/h. 40% chance of drizzle throughout the night.
	ThursdaySep 24	73°F23°C	62°F17°C	0.13 in3.3 mm· 69%	76%	Light Rain	N 3 mph4 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 62°F17°C. Light wind from the NNW around 3 mph5 km/h. 69% chance of showers throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the NNE around 2 mph4 km/h. 38% chance of drizzle throughout the night.
	FridaySep 25	70°F21°C	61°F16°C	0.21 in5.3 mm· 70%	89%	Light Rain	NNE 2 mph4 km/h
DayOvercast and warm, with a high of 70°F21°C and morning low of 61°F16°C. Light wind from the NE around 2 mph4 km/h. 57% chance of light rain throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the NNE around 3 mph4 km/h. 70% chance of light rain throughout the night.
	SaturdaySep 26	61°F16°C	58°F14°C	1.04 in26.4 mm· 95%	100%	Rain	ESE 3 mph4 km/h
DayOvercast and mild, with a high of 61°F16°C. Light wind from the ESE around 3 mph5 km/h. 95% chance of rain throughout the day. NightOvercast, with a low around 58°F14°C. Light wind from the ESE around 2 mph4 km/h. 91% chance of rain throughout the night.
	SundaySep 27	64°F18°C	57°F14°C	0.71 in18.1 mm· 75%	97%	Rain	ESE 2 mph4 km/h
DayOvercast and mild, with a high of 64°F18°C and morning low of 57°F14°C. Light wind from the SE around 3 mph4 km/h. 70% chance of rain throughout the day. NightOvercast, with a low around 57°F14°C. Light wind from the ESE around 2 mph3 km/h. 75% chance of rain throughout the night.
	MondaySep 28	69°F21°C	60°F15°C	0.33 in8.5 mm· 63%	92%	Light Rain	WNW 3 mph4 km/h
DayOvercast and warm, with a high of 69°F21°C and morning low of 60°F15°C. Light wind from the WNW around 3 mph5 km/h. 60% chance of light rain throughout the day. NightOvercast, with a low around 60°F15°C. Light wind from the WNW around 3 mph4 km/h. 63% chance of light rain throughout the night.
	TuesdaySep 29	66°F19°C	58°F15°C	0.39 in10 mm· 52%	81%	Light Rain	NNW 3 mph5 km/h
DayOvercast and mild, with a high of 66°F19°C and morning low of 58°F15°C. Light wind from the NNW around 4 mph6 km/h. 51% chance of light rain throughout the day. NightOvercast, with a low around 59°F15°C. Light wind from the NNW around 3 mph5 km/h. 52% chance of light rain throughout the night.
	WednesdaySep 30	68°F20°C	57°F14°C	0.35 in8.8 mm· 47%	75%	Light Rain	SE 3 mph5 km/h
DayMostly cloudy and warm, with a high of 68°F20°C and morning low of 57°F14°C. Light wind from the SSE around 3 mph5 km/h. 44% chance of light rain throughout the day. NightMostly cloudy, with a low around 57°F14°C. Light wind from the SE around 3 mph4 km/h. 47% chance of light rain throughout the night.
	ThursdayOct 1	70°F21°C	59°F15°C	0.33 in8.3 mm· 46%	71%	Light Rain	NW 4 mph6 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 59°F15°C. Light wind from the NW 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 NW around 3 mph5 km/h. 42% chance of light rain throughout the night.
	FridayOct 2	66°F19°C	56°F14°C	0.3 in7.5 mm· 38%	68%	Showers	NNW 4 mph6 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 56°F14°C. Light wind from the NNW around 4 mph7 km/h. 36% chance of showers throughout the day. NightMostly cloudy, with a low around 57°F14°C. Light wind from the NNW around 3 mph5 km/h. 38% chance of showers throughout the night.
	SaturdayOct 3	64°F18°C	53°F12°C	0.25 in6.4 mm· 36%	68%	Showers	N 3 mph5 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 53°F12°C. Light wind from the N around 4 mph6 km/h. 33% chance of showers throughout the day. NightMostly cloudy, with a low around 54°F12°C. Light wind from the N around 3 mph5 km/h. 36% chance of showers throughout the night.
	SundayOct 4	64°F18°C	52°F11°C	0.16 in4 mm· 27%	64%	Showers	N 4 mph6 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 52°F11°C. Light wind from the NNW around 4 mph7 km/h. 24% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 53°F12°C. Light wind from the N around 3 mph5 km/h. 27% chance of showers throughout the night.
	MondayOct 5	64°F18°C	51°F11°C	0.12 in3.1 mm· 23%	58%	Showers	NNE 4 mph6 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 51°F11°C. Light wind from the N around 4 mph6 km/h. 23% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 52°F11°C. Light wind from the NNE around 3 mph5 km/h. 23% chance of showers throughout the night.
	TuesdayOct 6	64°F18°C	52°F11°C	0.23 in5.8 mm· 28%	62%	Showers	NNE 3 mph5 km/h
DayMostly cloudy and mild, with a high of 64°F18°C and morning low of 52°F11°C. Light wind from the NNE around 4 mph6 km/h. 26% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 52°F11°C. Light wind from the NE around 3 mph5 km/h. 28% 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