Current Conditions

Okaya, Nagano

67°F20°C

Rain

Wind

NE 3 mph5 km/h

Humidity

87%

Cloud Cover

74%

As of Thursday, August 13, 2026 at 8:17 PM GMT+9

Today's Outlook

Night

Overcast, with a low around 66°F19°C. Light wind from the ENE around 2 mph3 km/h. 93% chance of light rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 75°F24°C	Low 66°F19°C	Precip 0.46 in11.7 mm98%	Cloud 83%	Wind ENE 2 mph4 km/h	Friday: Overcast and warm, with a high of 75°F24°C and morning low of 66°F19°C. Light wind from the E around 3 mph4 km/h. 98% chance of rain throughout the day. Humid. Friday Night: Overcast, with a low around 66°F19°C. Light wind from the ENE around 2 mph3 km/h. 93% chance of light rain throughout the night.
Rain	High 78°F26°C	Low 66°F19°C	Precip 0.26 in6.6 mm96%	Cloud 84%	Wind ESE 2 mph3 km/h	Saturday: Overcast and warm, with a high of 78°F26°C and morning low of 66°F19°C. Light wind from the ESE around 2 mph4 km/h. 96% chance of rain throughout the day. Humid. Saturday Night: Overcast, with a low around 66°F19°C. Light wind from the ESE around 2 mph3 km/h. 94% chance of rain in the evening.
Drizzle	High 80°F26°C	Low 68°F20°C	Precip 0.08 in2 mm38%	Cloud 91%	Wind SE 2 mph4 km/h	Sunday: Overcast and warm, with a high of 80°F26°C and morning low of 68°F20°C. Light wind from the SE around 3 mph4 km/h. 38% chance of drizzle throughout the day. Sunday Night: Overcast, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h. 34% chance of drizzle throughout the night.
Cloudy	High 80°F27°C	Low 67°F19°C	Precip 0.02 in0.4 mm6%	Cloud 94%	Wind SSE 3 mph4 km/h	Monday: Overcast and warm, with a high of 80°F27°C and morning low of 67°F19°C. Light wind from the S around 3 mph5 km/h. Monday Night: Overcast, with a low around 68°F20°C. Light wind from the SE around 2 mph4 km/h.
Drizzle	High 83°F28°C	Low 68°F20°C	Precip 0.03 in0.8 mm18%	Cloud 78%	Wind S 2 mph4 km/h	Tuesday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 68°F20°C. Light wind from the S around 3 mph4 km/h. 18% chance of drizzle in the afternoon. Tuesday Night: Mostly cloudy, with a low around 68°F20°C. Light wind from the S around 2 mph4 km/h. 15% chance of drizzle in the evening.
Showers	High 83°F28°C	Low 69°F20°C	Precip 0.08 in2 mm53%	Cloud 69%	Wind S 2 mph3 km/h	Wednesday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 69°F20°C. Light wind from the ESE around 2 mph3 km/h. 53% chance of showers around midday. Humid. Wednesday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the SW around 2 mph3 km/h. 36% chance of light rain in the evening.
Showers	High 82°F28°C	Low 69°F20°C	Precip 0.18 in4.6 mm72%	Cloud 68%	Wind S 2 mph3 km/h	Thursday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 69°F20°C. Light wind from the SE around 2 mph3 km/h. 72% chance of showers throughout the day. Humid. Thursday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the SW around 2 mph3 km/h. 61% chance of showers in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	FridayAug 14	75°F24°C	66°F19°C	0.46 in11.7 mm· 98%	83%	Rain	ENE 2 mph4 km/h
DayOvercast and warm, with a high of 75°F24°C and morning low of 66°F19°C. Light wind from the E around 3 mph4 km/h. 98% chance of rain throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the ENE around 2 mph3 km/h. 93% chance of light rain throughout the night.
	SaturdayAug 15	78°F26°C	66°F19°C	0.26 in6.6 mm· 96%	84%	Rain	ESE 2 mph3 km/h
DayOvercast and warm, with a high of 78°F26°C and morning low of 66°F19°C. Light wind from the ESE 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 ESE around 2 mph3 km/h. 94% chance of rain in the evening.
	SundayAug 16	80°F26°C	68°F20°C	0.08 in2 mm· 38%	91%	Drizzle	SE 2 mph4 km/h
DayOvercast and warm, with a high of 80°F26°C and morning low of 68°F20°C. Light wind from the SE around 3 mph4 km/h. 38% chance of drizzle throughout the day. NightOvercast, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h. 34% chance of drizzle throughout the night.
	MondayAug 17	80°F27°C	67°F19°C	0.02 in0.4 mm· 6%	94%	Cloudy	SSE 3 mph4 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 67°F19°C. Light wind from the S around 3 mph5 km/h. NightOvercast, with a low around 68°F20°C. Light wind from the SE around 2 mph4 km/h.
	TuesdayAug 18	83°F28°C	68°F20°C	0.03 in0.8 mm· 18%	78%	Drizzle	S 2 mph4 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 68°F20°C. Light wind from the S around 3 mph4 km/h. 18% chance of drizzle in the afternoon. NightMostly cloudy, with a low around 68°F20°C. Light wind from the S around 2 mph4 km/h. 15% chance of drizzle in the evening.
	WednesdayAug 19	83°F28°C	69°F20°C	0.08 in2 mm· 53%	69%	Showers	S 2 mph3 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 69°F20°C. Light wind from the ESE around 2 mph3 km/h. 53% chance of showers around midday. Humid. NightMostly cloudy, with a low around 70°F21°C. Light wind from the SW around 2 mph3 km/h. 36% chance of light rain in the evening.
	ThursdayAug 20	82°F28°C	69°F20°C	0.18 in4.6 mm· 72%	68%	Showers	S 2 mph3 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 69°F20°C. Light wind from the SE around 2 mph3 km/h. 72% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 70°F21°C. Light wind from the SW around 2 mph3 km/h. 61% chance of showers in the evening.
	FridayAug 21	80°F27°C	68°F20°C	0.26 in6.6 mm· 71%	78%	Light Rain	SSW 2 mph4 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 68°F20°C. Light wind from the SSW around 2 mph4 km/h. 71% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Light wind from the SSW around 2 mph3 km/h. 60% chance of light rain throughout the night.
	SaturdayAug 22	81°F27°C	67°F20°C	0.14 in3.5 mm· 49%	73%	Light Rain	SSW 3 mph4 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 67°F20°C. Light wind from the SSW around 3 mph5 km/h. 49% chance of light rain throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the SSW around 2 mph4 km/h. 37% chance of light rain throughout the night.
	SundayAug 23	81°F27°C	67°F20°C	0.13 in3.4 mm· 44%	73%	Light Rain	SW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 67°F20°C. Light wind from the SW around 3 mph5 km/h. 44% chance of light rain throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the SW around 3 mph4 km/h. 34% chance of light rain throughout the night.
	MondayAug 24	81°F27°C	67°F19°C	0.11 in2.8 mm· 44%	65%	Showers	SW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 67°F19°C. Light wind from the SW around 3 mph5 km/h. 44% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the SW around 3 mph4 km/h. 26% chance of drizzle throughout the night.
	TuesdayAug 25	82°F28°C	67°F19°C	0.1 in2.5 mm· 32%	62%	Drizzle	SW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F19°C. Light wind from the SW around 3 mph5 km/h. 32% chance of drizzle throughout the day. NightMostly cloudy, with a low around 67°F20°C. Light wind from the SW around 3 mph4 km/h. 23% chance of drizzle throughout the night.
	WednesdayAug 26	82°F28°C	67°F19°C	0.13 in3.3 mm· 33%	59%	Showers	SW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F19°C. Light wind from the SSW around 3 mph6 km/h. 33% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the SW around 3 mph5 km/h. 26% chance of showers in the evening.
	ThursdayAug 27	81°F27°C	67°F20°C	0.16 in4.1 mm· 40%	65%	Showers	SSW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 67°F20°C. Light wind from the SSW around 3 mph6 km/h. 40% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the SW around 3 mph4 km/h. 30% chance of showers throughout the night.
	FridayAug 28	81°F27°C	67°F20°C	0.14 in3.5 mm· 36%	65%	Showers	SSW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 67°F20°C. Light wind from the S around 3 mph5 km/h. 36% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Light wind from the SSW around 3 mph4 km/h. 19% chance of drizzle throughout the night.

Nearby Cities

Shimosuwa2 mi4 km Suwa4 mi6 km Shiojiri5 mi9 km Tatsuno6 mi9 km Chino7 mi12 km Kinoshita11 mi18 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.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 36.0566°N, 138.0451°E·Elevation: 773m·Timezone: Asia/Tokyo·Population: 54,286