Current Conditions

Saku, Nagano

69°F21°C

Heavy Rain

Wind

SW 2 mph4 km/h

Humidity

94%

Cloud Cover

96%

As of Wednesday, September 9, 2026 at 5:05 AM GMT+9

Today's Outlook

Day

Overcast and warm, with a high of 72°F22°C and morning low of 65°F18°C. Light wind from the NW around 4 mph7 km/h. 100% chance of rain throughout the day. Humid.

Night

Overcast, with a low around 61°F16°C. Light wind from the NW around 3 mph5 km/h. 100% chance of heavy rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Heavy Rain	High 72°F22°C	Low 61°F16°C	Precip 1.42 in36.1 mm100%	Cloud 98%	Wind NW 4 mph6 km/h	Wednesday: Overcast and warm, with a high of 72°F22°C and morning low of 65°F18°C. Light wind from the NW around 4 mph7 km/h. 100% chance of rain throughout the day. Humid. Wednesday Night: Overcast, with a low around 61°F16°C. Light wind from the NW around 3 mph5 km/h. 100% chance of heavy rain throughout the night.
Light Rain	High 64°F18°C	Low 58°F15°C	Precip 0.33 in8.4 mm62%	Cloud 92%	Wind E 4 mph6 km/h	Thursday: Overcast and mild, with a high of 64°F18°C and morning low of 58°F15°C. Light wind from the E around 4 mph6 km/h. 62% chance of light rain throughout the day. Thursday Night: Overcast, with a low around 59°F15°C. Light wind from the ENE around 3 mph6 km/h. 59% chance of light rain throughout the night.
Rain	High 68°F20°C	Low 59°F15°C	Precip 0.71 in18.1 mm88%	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 NE around 2 mph4 km/h. 88% chance of rain throughout the day. Friday Night: Overcast, with a low around 59°F15°C. Light wind from the E around 3 mph4 km/h. 67% chance of rain throughout the night.
Light Rain	High 72°F22°C	Low 63°F17°C	Precip 0.14 in3.5 mm68%	Cloud 85%	Wind E 3 mph4 km/h	Saturday: Overcast and warm, with a high of 72°F22°C and morning low of 63°F17°C. Light wind from the E around 3 mph4 km/h. 68% chance of light rain throughout the day. Saturday Night: Overcast, with a low around 63°F17°C. Light wind from the E around 3 mph4 km/h. 58% chance of drizzle throughout the night.
Drizzle	High 74°F23°C	Low 64°F18°C	Precip 0.09 in2.4 mm49%	Cloud 83%	Wind ESE 3 mph5 km/h	Sunday: Mostly cloudy and warm, with a high of 74°F23°C and morning low of 64°F18°C. Light wind from the SE around 3 mph5 km/h. 49% chance of drizzle throughout the day. Sunday Night: Overcast, with a low around 64°F18°C. Light wind from the ESE around 3 mph5 km/h. 36% chance of drizzle throughout the night.
Light Rain	High 77°F25°C	Low 66°F19°C	Precip 0.17 in4.3 mm79%	Cloud 75%	Wind SW 3 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 3 mph5 km/h. 79% chance of showers throughout the day. Humid. Monday Night: Overcast, with a low around 66°F19°C. Light wind from the SSE around 2 mph3 km/h. 73% chance of light rain in the evening.
Rain	High 71°F22°C	Low 66°F19°C	Precip 0.43 in11 mm95%	Cloud 95%	Wind ESE 2 mph3 km/h	Tuesday: Overcast and warm, with a high of 71°F22°C and morning low of 66°F19°C. Light wind from the ESE around 2 mph3 km/h. 95% chance of rain throughout the day. Tuesday Night: Overcast, with a low around 66°F19°C. Light wind from the SE around 2 mph3 km/h. 94% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	72°F22°C	61°F16°C	1.42 in36.1 mm· 100%	98%	Heavy Rain	NW 4 mph6 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 65°F18°C. Light wind from the NW around 4 mph7 km/h. 100% chance of rain throughout the day. Humid. NightOvercast, with a low around 61°F16°C. Light wind from the NW around 3 mph5 km/h. 100% chance of heavy rain throughout the night.
	ThursdaySep 10	64°F18°C	58°F15°C	0.33 in8.4 mm· 62%	92%	Light Rain	E 4 mph6 km/h
DayOvercast and mild, with a high of 64°F18°C and morning low of 58°F15°C. Light wind from the E around 4 mph6 km/h. 62% chance of light rain throughout the day. NightOvercast, with a low around 59°F15°C. Light wind from the ENE around 3 mph6 km/h. 59% chance of light rain throughout the night.
	FridaySep 11	68°F20°C	59°F15°C	0.71 in18.1 mm· 88%	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 NE around 2 mph4 km/h. 88% chance of rain throughout the day. NightOvercast, with a low around 59°F15°C. Light wind from the E around 3 mph4 km/h. 67% chance of rain throughout the night.
	SaturdaySep 12	72°F22°C	63°F17°C	0.14 in3.5 mm· 68%	85%	Light Rain	E 3 mph4 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 63°F17°C. Light wind from the E around 3 mph4 km/h. 68% chance of light rain throughout the day. NightOvercast, with a low around 63°F17°C. Light wind from the E around 3 mph4 km/h. 58% chance of drizzle throughout the night.
	SundaySep 13	74°F23°C	64°F18°C	0.09 in2.4 mm· 49%	83%	Drizzle	ESE 3 mph5 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 64°F18°C. Light wind from the SE around 3 mph5 km/h. 49% chance of drizzle throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the ESE around 3 mph5 km/h. 36% chance of drizzle throughout the night.
	MondaySep 14	77°F25°C	66°F19°C	0.17 in4.3 mm· 79%	75%	Light Rain	SW 3 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 3 mph5 km/h. 79% chance of showers throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the SSE around 2 mph3 km/h. 73% chance of light rain in the evening.
	TuesdaySep 15	71°F22°C	66°F19°C	0.43 in11 mm· 95%	95%	Rain	ESE 2 mph3 km/h
DayOvercast and warm, with a high of 71°F22°C and morning low of 66°F19°C. Light wind from the ESE around 2 mph3 km/h. 95% chance of rain throughout the day. NightOvercast, with a low around 66°F19°C. Light wind from the SE around 2 mph3 km/h. 94% chance of light rain throughout the night.
	WednesdaySep 16	69°F21°C	64°F18°C	0.57 in14.4 mm· 99%	96%	Rain	E 2 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. 99% chance of rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the ESE around 2 mph4 km/h. 96% chance of rain throughout the night.
	ThursdaySep 17	68°F20°C	63°F17°C	0.51 in12.9 mm· 87%	93%	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. 87% chance of rain throughout the day. NightOvercast, with a low around 63°F17°C. Light wind from the E around 3 mph4 km/h. 72% chance of light rain throughout the night.
	FridaySep 18	68°F20°C	62°F16°C	0.4 in10.1 mm· 69%	88%	Light Rain	ENE 3 mph5 km/h
DayOvercast and mild, with a high of 68°F20°C and morning low of 62°F16°C. Light wind from the ENE around 4 mph6 km/h. 69% chance of light rain throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the ENE around 3 mph5 km/h. 65% chance of light rain throughout the night.
	SaturdaySep 19	67°F20°C	61°F16°C	0.77 in19.5 mm· 63%	85%	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. 63% chance of light rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the ENE around 3 mph6 km/h. 63% chance of rain throughout the night.
	SundaySep 20	67°F19°C	60°F16°C	0.89 in22.7 mm· 67%	86%	Rain	ENE 5 mph7 km/h
DayOvercast and mild, with a high of 67°F19°C and morning low of 60°F16°C. Light wind from the ENE around 5 mph8 km/h. 67% chance of rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the E around 4 mph7 km/h. 64% chance of rain throughout the night.
	MondaySep 21	69°F21°C	60°F15°C	0.61 in15.6 mm· 57%	78%	Rain	E 4 mph7 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 60°F15°C. Light wind from the ESE around 5 mph7 km/h. 57% chance of light rain throughout the day. NightMostly cloudy, with a low around 60°F16°C. Light wind from the E around 4 mph6 km/h. 57% chance of rain throughout the night.
	TuesdaySep 22	70°F21°C	59°F15°C	0.37 in9.4 mm· 43%	69%	Showers	NNE 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. 43% chance of showers throughout the day. NightMostly cloudy, with a low around 60°F15°C. Light wind from the E around 3 mph5 km/h. 35% chance of showers throughout the night.
	WednesdaySep 23	70°F21°C	57°F14°C	0.13 in3.3 mm· 34%	63%	Showers	NNE 3 mph5 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 57°F14°C. Light wind from the NW around 3 mph5 km/h. 34% chance of showers throughout the day. NightMostly cloudy, with a low around 58°F15°C. Light wind from the NE around 3 mph5 km/h. 27% chance of drizzle throughout the night.

Nearby Cities

Komoro7 mi12 km Miyota8 mi14 km Tōmi12 mi19 km Karuizawa12 mi20 km Kamimaruko14 mi22 km Ueda17 mi27 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: 36.2167°N, 138.4833°E·Elevation: 684m·Timezone: Asia/Tokyo·Population: 99,131