Current Conditions

Arai, Niigata

75°F24°C

Showers

Wind

NNE 3 mph5 km/h

Humidity

73%

Cloud Cover

60%

As of Wednesday, September 23, 2026 at 2:29 PM GMT+9

Today's Outlook

Day

Partly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Light wind from the NE around 3 mph4 km/h. 36% chance of drizzle in the afternoon.

Night

Overcast, with a low around 69°F20°C. Light wind from the SE around 2 mph3 km/h. 87% chance of light rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Showers	High 77°F25°C	Low 69°F20°C	Precip 0.09 in2.3 mm87%	Cloud 58%	Wind ENE 2 mph4 km/h	Wednesday: Partly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Light wind from the NE around 3 mph4 km/h. 36% chance of drizzle in the afternoon. Wednesday Night: Overcast, with a low around 69°F20°C. Light wind from the SE around 2 mph3 km/h. 87% chance of light rain throughout the night.
Rain	High 72°F22°C	Low 66°F19°C	Precip 0.43 in10.9 mm100%	Cloud 86%	Wind NNW 3 mph5 km/h	Thursday: Overcast and warm, with a high of 72°F22°C and morning low of 66°F19°C. Light wind from the NNW around 4 mph6 km/h. 100% chance of rain throughout the day. Humid. Thursday Night: Overcast, with a low around 66°F19°C. Light wind from the NNE around 2 mph4 km/h. 92% chance of light rain throughout the night.
Drizzle	High 74°F23°C	Low 61°F16°C	Precip 0.03 in0.8 mm30%	Cloud 85%	Wind NNE 3 mph4 km/h	Friday: Mostly cloudy and warm, with a high of 74°F23°C and morning low of 61°F16°C. Light wind from the NNE around 3 mph5 km/h. 18% chance of drizzle in the afternoon. Friday Night: Overcast, with a low around 62°F17°C. Light wind from the ENE around 2 mph4 km/h. 30% chance of drizzle in the evening.
Rain	High 66°F19°C	Low 61°F16°C	Precip 0.67 in17 mm95%	Cloud 99%	Wind SE 2 mph4 km/h	Saturday: Overcast and mild, with a high of 66°F19°C and morning low of 61°F16°C. Light wind from the SE around 3 mph4 km/h. 95% chance of rain throughout the day. Saturday Night: Overcast, with a low around 62°F17°C. Light wind from the SE around 2 mph4 km/h. 90% chance of rain throughout the night.
Light Rain	High 70°F21°C	Low 61°F16°C	Precip 0.32 in8.1 mm72%	Cloud 96%	Wind SSE 3 mph5 km/h	Sunday: Overcast and warm, with a high of 70°F21°C and morning low of 61°F16°C. Light wind from the SSE around 3 mph5 km/h. 72% chance of light rain throughout the day. Sunday Night: Overcast, with a low around 62°F16°C. Light wind from the SSE around 3 mph4 km/h. 61% chance of light rain throughout the night.
Light Rain	High 71°F22°C	Low 63°F17°C	Precip 0.42 in10.6 mm85%	Cloud 95%	Wind SW 3 mph5 km/h	Monday: Overcast and warm, with a high of 71°F22°C and morning low of 63°F17°C. Light wind from the WSW around 3 mph5 km/h. 85% chance of light rain throughout the day. Monday Night: Overcast, with a low around 64°F18°C. Light wind from the SSW around 3 mph5 km/h. 75% chance of light rain throughout the night.
Light Rain	High 69°F21°C	Low 62°F17°C	Precip 0.47 in11.9 mm64%	Cloud 89%	Wind NNW 2 mph4 km/h	Tuesday: Overcast and warm, with a high of 69°F21°C and morning low of 62°F17°C. Light wind from the NNW around 3 mph4 km/h. 56% chance of light rain throughout the day. Tuesday Night: Overcast, with a low around 63°F17°C. Light wind from the SW around 2 mph4 km/h. 64% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	77°F25°C	69°F20°C	0.09 in2.3 mm· 87%	58%	Showers	ENE 2 mph4 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Light wind from the NE around 3 mph4 km/h. 36% chance of drizzle in the afternoon. NightOvercast, with a low around 69°F20°C. Light wind from the SE around 2 mph3 km/h. 87% chance of light rain throughout the night.
	ThursdaySep 24	72°F22°C	66°F19°C	0.43 in10.9 mm· 100%	86%	Rain	NNW 3 mph5 km/h
DayOvercast and warm, with a high of 72°F22°C and morning low of 66°F19°C. Light wind from the NNW around 4 mph6 km/h. 100% chance of rain throughout the day. Humid. NightOvercast, with a low around 66°F19°C. Light wind from the NNE around 2 mph4 km/h. 92% chance of light rain throughout the night.
	FridaySep 25	74°F23°C	61°F16°C	0.03 in0.8 mm· 30%	85%	Drizzle	NNE 3 mph4 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 61°F16°C. Light wind from the NNE around 3 mph5 km/h. 18% chance of drizzle in the afternoon. NightOvercast, with a low around 62°F17°C. Light wind from the ENE around 2 mph4 km/h. 30% chance of drizzle in the evening.
	SaturdaySep 26	66°F19°C	61°F16°C	0.67 in17 mm· 95%	99%	Rain	SE 2 mph4 km/h
DayOvercast and mild, with a high of 66°F19°C and morning low of 61°F16°C. Light wind from the SE around 3 mph4 km/h. 95% chance of rain throughout the day. NightOvercast, with a low around 62°F17°C. Light wind from the SE around 2 mph4 km/h. 90% chance of rain throughout the night.
	SundaySep 27	70°F21°C	61°F16°C	0.32 in8.1 mm· 72%	96%	Light Rain	SSE 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 SSE around 3 mph5 km/h. 72% chance of light rain throughout the day. NightOvercast, with a low around 62°F16°C. Light wind from the SSE around 3 mph4 km/h. 61% chance of light rain throughout the night.
	MondaySep 28	71°F22°C	63°F17°C	0.42 in10.6 mm· 85%	95%	Light Rain	SW 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 WSW around 3 mph5 km/h. 85% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the SSW around 3 mph5 km/h. 75% chance of light rain throughout the night.
	TuesdaySep 29	69°F21°C	62°F17°C	0.47 in11.9 mm· 64%	89%	Light Rain	NNW 2 mph4 km/h
DayOvercast and warm, with a high of 69°F21°C and morning low of 62°F17°C. Light wind from the NNW around 3 mph4 km/h. 56% chance of light rain throughout the day. NightOvercast, with a low around 63°F17°C. Light wind from the SW around 2 mph4 km/h. 64% chance of light rain throughout the night.
	WednesdaySep 30	71°F22°C	62°F17°C	0.65 in16.6 mm· 66%	75%	Light Rain	WSW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 62°F17°C. Light wind from the W around 3 mph5 km/h. 66% chance of light rain throughout the day. NightMostly cloudy, with a low around 62°F17°C. Light wind from the SW around 3 mph4 km/h. 60% chance of light rain throughout the night.
	ThursdayOct 1	67°F19°C	59°F15°C	0.52 in13.2 mm· 61%	72%	Light Rain	NW 4 mph7 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 60°F16°C. Light wind from the NW around 5 mph8 km/h. 59% chance of light rain throughout the day. NightMostly cloudy, with a low around 59°F15°C. Light wind from the NW around 4 mph6 km/h. 61% chance of light rain throughout the night.
	FridayOct 2	65°F19°C	55°F13°C	0.17 in4.2 mm· 45%	59%	Showers	NNE 4 mph6 km/h
DayMostly cloudy and mild, with a high of 65°F19°C and morning low of 55°F13°C. Light wind from the NNE around 4 mph6 km/h. 27% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Light wind from the NE around 3 mph5 km/h. 45% chance of showers throughout the night.
	SaturdayOct 3	68°F20°C	55°F13°C	0.22 in5.6 mm· 34%	64%	Showers	SSE 4 mph6 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 55°F13°C. Light wind from the SE around 4 mph7 km/h. 33% chance of showers throughout the day. NightMostly cloudy, with a low around 55°F13°C. Light wind from the SSE around 4 mph6 km/h. 34% chance of showers throughout the night.
	SundayOct 4	66°F19°C	57°F14°C	0.38 in9.6 mm· 52%	69%	Showers	NNW 4 mph7 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 57°F14°C. Light wind from the NNW around 5 mph8 km/h. 52% chance of showers throughout the day. NightMostly cloudy, with a low around 57°F14°C. Light wind from the W around 4 mph7 km/h. 47% chance of showers throughout the night.
	MondayOct 5	66°F19°C	55°F13°C	0.14 in3.6 mm· 37%	60%	Showers	N 4 mph6 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 55°F13°C. Light wind from the N around 4 mph7 km/h. 30% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Light wind from the NNE around 3 mph6 km/h. 37% chance of showers throughout the night.
	TuesdayOct 6	68°F20°C	54°F12°C	0.11 in2.7 mm· 18%	53%	Showers	NE 4 mph6 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 54°F12°C. Light wind from the NNE around 4 mph6 km/h. 18% chance of drizzle throughout the day. NightMostly cloudy, with a low around 54°F12°C. Light wind from the ESE around 3 mph5 km/h. 17% chance of showers throughout the night.
	WednesdayOct 7	67°F20°C	55°F13°C	0.26 in6.7 mm· 37%	58%	Showers	ENE 4 mph6 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 55°F13°C. Light wind from the NNE around 4 mph7 km/h. 36% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Light wind from the SE around 4 mph6 km/h. 37% chance of showers throughout the night.

Nearby Cities

Myoko2 mi4 km Jōetsu10 mi16 km Iiyama13 mi21 km Nakano19 mi31 km Itoigawa21 mi34 km Nagano24 mi39 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: 37.0006°N, 138.2259°E·Elevation: 175m·Timezone: Asia/Tokyo·Population: 27,481