Current Conditions

Saku, Nagano

69°F20°C

Rain

Wind

SSW 2 mph3 km/h

Humidity

91%

Cloud Cover

100%

As of Thursday, September 3, 2026 at 5:15 AM GMT+9

Today's Outlook

Day

Overcast and warm, with a high of 73°F23°C and morning low of 69°F20°C. Light wind from the W around 2 mph4 km/h. 98% chance of rain throughout the day. Humid.

Night

Overcast, with a low around 66°F19°C. Light wind from the SW around 2 mph3 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 73°F23°C	Low 66°F19°C	Precip 0.6 in15.2 mm100%	Cloud 100%	Wind W 2 mph3 km/h	Thursday: Overcast and warm, with a high of 73°F23°C and morning low of 69°F20°C. Light wind from the W around 2 mph4 km/h. 98% chance of rain throughout the day. Humid. Thursday Night: Overcast, with a low around 66°F19°C. Light wind from the SW around 2 mph3 km/h. 100% chance of rain throughout the night.
Rain	High 68°F20°C	Low 64°F18°C	Precip 0.47 in12 mm95%	Cloud 100%	Wind NNW 2 mph3 km/h	Friday: Overcast and warm, with a high of 68°F20°C. Light wind from the NNW around 2 mph3 km/h. 89% chance of light rain throughout the day. Friday Night: Overcast, with a low around 64°F18°C. Light wind from the NNW around 2 mph3 km/h. 95% chance of rain throughout the night.
Rain	High 70°F21°C	Low 61°F16°C	Precip 0.38 in9.6 mm89%	Cloud 96%	Wind E 3 mph5 km/h	Saturday: Overcast and warm, with a high of 70°F21°C and morning low of 61°F16°C. Light wind from the ENE around 3 mph5 km/h. 68% chance of light rain throughout the day. Saturday Night: Overcast, with a low around 62°F16°C. Light wind from the E around 3 mph5 km/h. 89% chance of rain throughout the night.
Rain	High 65°F19°C	Low 60°F16°C	Precip 0.45 in11.5 mm80%	Cloud 98%	Wind E 5 mph8 km/h	Sunday: Overcast and mild, with a high of 65°F19°C and morning low of 60°F16°C. Light wind from the ESE around 6 mph9 km/h. 71% chance of light rain throughout the day. Sunday Night: Overcast, with a low around 61°F16°C. Light wind from the E around 4 mph7 km/h. 80% chance of rain throughout the night.
Rain	High 68°F20°C	Low 62°F16°C	Precip 1.43 in36.3 mm94%	Cloud 97%	Wind ESE 3 mph5 km/h	Monday: Overcast and warm, with a high of 68°F20°C and morning low of 62°F17°C. Light wind from the ESE around 3 mph5 km/h. 94% chance of rain throughout the day. Monday Night: Overcast, with a low around 62°F16°C. Light wind from the ESE around 3 mph5 km/h. 91% chance of rain throughout the night.
Light Rain	High 76°F24°C	Low 65°F19°C	Precip 0.43 in11 mm76%	Cloud 82%	Wind SE 3 mph4 km/h	Tuesday: Overcast and warm, with a high of 76°F24°C and morning low of 65°F19°C. Light wind from the SE around 3 mph5 km/h. 76% chance of light rain throughout the day. Humid. Tuesday Night: Overcast, with a low around 65°F19°C. Light wind from the SE around 3 mph4 km/h. 62% chance of light rain throughout the night.
Light Rain	High 77°F25°C	Low 68°F20°C	Precip 0.34 in8.6 mm79%	Cloud 82%	Wind SSW 3 mph4 km/h	Wednesday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the SW around 3 mph5 km/h. 79% chance of light rain throughout the day. Humid. Wednesday Night: Overcast, with a low around 68°F20°C. Light wind from the S around 2 mph4 km/h. 75% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdaySep 3	73°F23°C	66°F19°C	0.6 in15.2 mm· 100%	100%	Rain	W 2 mph3 km/h
DayOvercast and warm, with a high of 73°F23°C and morning low of 69°F20°C. Light wind from the W around 2 mph4 km/h. 98% chance of rain throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the SW around 2 mph3 km/h. 100% chance of rain throughout the night.
	FridaySep 4	68°F20°C	64°F18°C	0.47 in12 mm· 95%	100%	Rain	NNW 2 mph3 km/h
DayOvercast and warm, with a high of 68°F20°C. Light wind from the NNW around 2 mph3 km/h. 89% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the NNW around 2 mph3 km/h. 95% chance of rain throughout the night.
	SaturdaySep 5	70°F21°C	61°F16°C	0.38 in9.6 mm· 89%	96%	Rain	E 3 mph5 km/h
DayOvercast and warm, with a high of 70°F21°C and morning low of 61°F16°C. Light wind from the ENE around 3 mph5 km/h. 68% chance of light rain throughout the day. NightOvercast, with a low around 62°F16°C. Light wind from the E around 3 mph5 km/h. 89% chance of rain throughout the night.
	SundaySep 6	65°F19°C	60°F16°C	0.45 in11.5 mm· 80%	98%	Rain	E 5 mph8 km/h
DayOvercast and mild, with a high of 65°F19°C and morning low of 60°F16°C. Light wind from the ESE around 6 mph9 km/h. 71% chance of light rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the E around 4 mph7 km/h. 80% chance of rain throughout the night.
	MondaySep 7	68°F20°C	62°F16°C	1.43 in36.3 mm· 94%	97%	Rain	ESE 3 mph5 km/h
DayOvercast and warm, with a high of 68°F20°C and morning low of 62°F17°C. Light wind from the ESE around 3 mph5 km/h. 94% chance of rain throughout the day. NightOvercast, with a low around 62°F16°C. Light wind from the ESE around 3 mph5 km/h. 91% chance of rain throughout the night.
	TuesdaySep 8	76°F24°C	65°F19°C	0.43 in11 mm· 76%	82%	Light Rain	SE 3 mph4 km/h
DayOvercast and warm, with a high of 76°F24°C and morning low of 65°F19°C. Light wind from the SE around 3 mph5 km/h. 76% chance of light rain throughout the day. Humid. NightOvercast, with a low around 65°F19°C. Light wind from the SE around 3 mph4 km/h. 62% chance of light rain throughout the night.
	WednesdaySep 9	77°F25°C	68°F20°C	0.34 in8.6 mm· 79%	82%	Light Rain	SSW 3 mph4 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the SW around 3 mph5 km/h. 79% chance of light rain throughout the day. Humid. NightOvercast, with a low around 68°F20°C. Light wind from the S around 2 mph4 km/h. 75% chance of light rain throughout the night.
	ThursdaySep 10	72°F22°C	66°F19°C	0.49 in12.4 mm· 77%	86%	Light Rain	NNW 3 mph5 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 67°F19°C. Light wind from the NNW around 3 mph6 km/h. 77% chance of light rain throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the N around 3 mph4 km/h. 72% chance of light rain throughout the night.
	FridaySep 11	70°F21°C	64°F18°C	0.34 in8.6 mm· 75%	88%	Light Rain	E 3 mph5 km/h
DayOvercast and warm, with a high of 70°F21°C and morning low of 64°F18°C. Light wind from the ENE around 3 mph5 km/h. 75% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the E around 3 mph4 km/h. 60% chance of light rain throughout the night.
	SaturdaySep 12	71°F22°C	63°F17°C	0.28 in7 mm· 74%	88%	Light Rain	ESE 3 mph5 km/h
DayOvercast and warm, with a high of 71°F22°C and morning low of 63°F17°C. Light wind from the ESE around 3 mph5 km/h. 74% 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. 66% chance of light rain throughout the night.
	SundaySep 13	72°F22°C	63°F17°C	0.24 in6.1 mm· 69%	84%	Light Rain	E 3 mph5 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 mph5 km/h. 69% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the E around 3 mph4 km/h. 66% chance of light rain throughout the night.
	MondaySep 14	72°F22°C	63°F17°C	0.28 in7.1 mm· 73%	84%	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 ESE around 3 mph5 km/h. 73% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the E around 3 mph4 km/h. 64% chance of light rain throughout the night.
	TuesdaySep 15	71°F22°C	62°F17°C	0.3 in7.5 mm· 72%	85%	Light Rain	E 3 mph4 km/h
DayOvercast and warm, with a high of 71°F22°C and morning low of 62°F17°C. Light wind from the ESE around 3 mph5 km/h. 72% 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. 65% chance of light rain throughout the night.
	WednesdaySep 16	71°F22°C	61°F16°C	0.27 in6.8 mm· 66%	83%	Light Rain	ESE 3 mph4 km/h
DayOvercast and warm, with a high of 71°F22°C and morning low of 61°F16°C. Light wind from the ESE around 3 mph5 km/h. 66% chance of light rain throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the E around 2 mph4 km/h. 58% chance of light rain throughout the night.
	ThursdaySep 17	71°F22°C	61°F16°C	0.24 in6.2 mm· 63%	85%	Light Rain	E 3 mph5 km/h
DayOvercast and warm, with a high of 71°F22°C and morning low of 61°F16°C. Light wind from the ESE around 3 mph5 km/h. 63% chance of light rain throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the E around 3 mph4 km/h. 58% chance of light rain 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