Current Conditions

Ōmachi, Nagano

65°F19°C
Rain

Wind

SSE 2 mph4 km/h

Humidity

77%

Cloud Cover

48%

As of Wednesday, September 23, 2026 at 10:07 AM GMT+9

Today's Outlook

Day

Mostly cloudy and warm, with a high of 69°F21°C. Light wind from the SE around 3 mph4 km/h. 95% chance of light rain around midday.

Night

Overcast, with a low around 62°F17°C. Light wind from the SSE around 2 mph3 km/h. 100% chance of rain throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
RainHigh 69°F21°CLow 62°F17°CPrecip 0.3 in7.6 mm100%Cloud 80%Wind SE 2 mph4 km/hWednesday: Mostly cloudy and warm, with a high of 69°F21°C. Light wind from the SE around 3 mph4 km/h. 95% chance of light rain around midday. Wednesday Night: Overcast, with a low around 62°F17°C. Light wind from the SSE around 2 mph3 km/h. 100% chance of rain throughout the night.
Light RainHigh 69°F20°CLow 60°F16°CPrecip 0.28 in7.1 mm97%Cloud 84%Wind NNW 3 mph5 km/hThursday: Mostly cloudy and warm, with a high of 69°F20°C and morning low of 60°F16°C. Light wind from the NW around 3 mph5 km/h. 97% chance of light rain throughout the day. Thursday Night: Overcast, with a low around 60°F16°C. Light wind from the NNW around 3 mph4 km/h. 76% chance of light rain throughout the night.
Light RainHigh 68°F20°CLow 56°F14°CPrecip 0.22 in5.5 mm73%Cloud 89%Wind N 2 mph3 km/hFriday: Overcast and warm, with a high of 68°F20°C and morning low of 56°F14°C. Light wind from the N around 2 mph3 km/h. 57% chance of light rain throughout the day. Friday Night: Overcast, with a low around 57°F14°C. Light wind from the N around 2 mph3 km/h. 73% chance of light rain throughout the night.
RainHigh 59°F15°CLow 55°F13°CPrecip 1.15 in29.1 mm98%Cloud 100%Wind SE 2 mph3 km/hSaturday: Overcast and mild, with a high of 59°F15°C. Light wind from the ESE around 2 mph3 km/h. 98% chance of rain throughout the day. Saturday Night: Overcast, with a low around 56°F14°C. Light wind from the SSE around 2 mph3 km/h. 96% chance of rain throughout the night.
RainHigh 62°F17°CLow 56°F13°CPrecip 0.7 in17.9 mm92%Cloud 97%Wind SSW 2 mph4 km/hSunday: Overcast and mild, with a high of 62°F17°C and morning low of 56°F13°C. Light wind from the S around 2 mph4 km/h. 92% chance of rain throughout the day. Sunday Night: Overcast, with a low around 56°F13°C. Light wind from the SW around 2 mph3 km/h. 91% chance of rain throughout the night.
RainHigh 64°F18°CLow 57°F14°CPrecip 0.88 in22.4 mm87%Cloud 97%Wind WSW 3 mph5 km/hMonday: Overcast and mild, with a high of 64°F18°C and morning low of 57°F14°C. Light wind from the SW around 3 mph5 km/h. 87% chance of rain throughout the day. Monday Night: Overcast, with a low around 57°F14°C. Light wind from the WSW around 3 mph5 km/h. 87% chance of rain throughout the night.
RainHigh 64°F18°CLow 57°F14°CPrecip 1 in25.4 mm71%Cloud 90%Wind W 3 mph4 km/hTuesday: Overcast and mild, with a high of 64°F18°C and morning low of 57°F14°C. Light wind from the W around 3 mph4 km/h. 65% chance of rain throughout the day. Tuesday Night: Overcast, with a low around 57°F14°C. Light wind from the W around 3 mph5 km/h. 71% chance of rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2369°F21°C62°F17°C0.3 in7.6 mm· 100%80%RainSE 2 mph4 km/h
ThursdaySep 2469°F20°C60°F16°C0.28 in7.1 mm· 97%84%Light RainNNW 3 mph5 km/h
FridaySep 2568°F20°C56°F14°C0.22 in5.5 mm· 73%89%Light RainN 2 mph3 km/h
SaturdaySep 2659°F15°C55°F13°C1.15 in29.1 mm· 98%100%RainSE 2 mph3 km/h
SundaySep 2762°F17°C56°F13°C0.7 in17.9 mm· 92%97%RainSSW 2 mph4 km/h
MondaySep 2864°F18°C57°F14°C0.88 in22.4 mm· 87%97%RainWSW 3 mph5 km/h
TuesdaySep 2964°F18°C57°F14°C1 in25.4 mm· 71%90%RainW 3 mph4 km/h
WednesdaySep 3065°F19°C56°F14°C1 in25.5 mm· 69%80%RainWSW 3 mph5 km/h
ThursdayOct 162°F17°C52°F11°C0.69 in17.4 mm· 64%75%RainWNW 4 mph6 km/h
FridayOct 260°F16°C48°F9°C0.33 in8.5 mm· 44%67%ShowersNNW 3 mph5 km/h
SaturdayOct 362°F17°C47°F8°C0.29 in7.4 mm· 34%67%ShowersNW 3 mph4 km/h
SundayOct 462°F16°C49°F9°C0.25 in6.4 mm· 36%62%FlurriesNNW 3 mph5 km/h
MondayOct 563°F17°C47°F9°C0.14 in3.5 mm· 27%55%ShowersNNW 3 mph5 km/h
TuesdayOct 663°F17°C48°F9°C0.15 in3.8 mm· 32%57%ShowersNNW 3 mph4 km/h
WednesdayOct 762°F17°C50°F10°C0.25 in6.3 mm· 40%64%ShowersNNW 3 mph5 km/h

Nearby Cities

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

PatternExampleDescription
/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=11.5Find 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: 36.5000°N, 137.8667°E·Elevation: 714m·Timezone: Asia/Tokyo·Population: 27,559