Current Conditions

Niiza, Saitama

80°F27°C
Heavy Rain

Wind

SSW 13 mph20 km/h

Humidity

89%

Cloud Cover

82%

As of Wednesday, September 9, 2026 at 5:00 AM GMT+9

Today's Outlook

Day

Overcast and hot, with a high of 87°F31°C and morning low of 80°F27°C — feels like 102°F39°C. Breezy from the SSW at 12 to 13 mph19 to 21 km/h. 93% chance of rain throughout the day. Heat risk in the afternoon.

Night

Overcast, with a low around 72°F22°C. Breezy from the ESE at 10 to 13 mph16 to 22 km/h. 100% chance of heavy rain throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Heavy RainHigh 87°F31°CFeels 102°F39°CLow 72°F22°CPrecip 0.97 in24.7 mm100%Cloud 89%Wind SSW 11 mph17 km/hWednesday: Overcast and hot, with a high of 87°F31°C and morning low of 80°F27°C — feels like 102°F39°C. Breezy from the SSW at 12 to 13 mph19 to 21 km/h. 93% chance of rain throughout the day. Heat risk in the afternoon. Wednesday Night: Overcast, with a low around 72°F22°C. Breezy from the ESE at 10 to 13 mph16 to 22 km/h. 100% chance of heavy rain throughout the night.
RainHigh 71°F22°CLow 68°F20°CPrecip 0.54 in13.8 mm95%Cloud 97%Wind NE 5 mph8 km/hThursday: Overcast and warm, with a high of 71°F22°C. Light wind from the NE around 5 mph8 km/h. 63% chance of light rain throughout the day. Thursday Night: Overcast, with a low around 68°F20°C. Light wind from the NE around 5 mph7 km/h. 95% chance of rain throughout the night.
RainHigh 73°F23°CLow 66°F19°CPrecip 1.1 in28 mm90%Cloud 90%Wind N 4 mph7 km/hFriday: Overcast and warm, with a high of 73°F23°C and morning low of 66°F19°C. Light wind from the N around 5 mph8 km/h. 90% chance of rain throughout the day. Humid. Friday Night: Overcast, with a low around 66°F19°C. Light wind from the N around 4 mph6 km/h. 82% chance of rain throughout the night.
Light RainHigh 78°F26°CLow 70°F21°CPrecip 0.1 in2.5 mm22%Cloud 78%Wind NE 4 mph7 km/hSaturday: Overcast and warm, with a high of 78°F26°C and morning low of 70°F21°C. Light wind from the NE around 5 mph7 km/h. 22% chance of light rain throughout the day. Humid. Saturday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the NE around 4 mph6 km/h. 17% chance of drizzle throughout the night.
DrizzleHigh 80°F26°CLow 70°F21°CPrecip 0.07 in1.8 mm28%Cloud 79%Wind NE 4 mph6 km/hSunday: Overcast and warm, with a high of 80°F26°C and morning low of 70°F21°C. Light wind from the NE around 4 mph7 km/h. 28% chance of drizzle throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 71°F22°C. Light wind from the NE around 3 mph6 km/h. 11% chance of drizzle throughout the night.
ShowersHigh 85°F29°CFeels 93°F34°CLow 73°F23°CPrecip 0.07 in1.7 mm32%Cloud 64%Wind S 5 mph7 km/hMonday: Mostly cloudy and warm, with a high of 85°F29°C and morning low of 73°F23°C — feels like 93°F34°C. Breezy from the S at 5 to 8 mph9 to 14 km/h. 19% chance of drizzle around midday. Heavy, humid air. Monday Night: Mostly cloudy, with a low around 74°F23°C. Light wind from the S around 4 mph6 km/h. 32% chance of showers in the evening.
Light RainHigh 80°F27°CLow 74°F23°CPrecip 0.41 in10.3 mm85%Cloud 93%Wind ENE 5 mph8 km/hTuesday: Overcast and warm, with a high of 80°F27°C and morning low of 75°F24°C. Light wind from the E around 5 mph8 km/h. 78% chance of light rain throughout the day. Heavy, humid air. Tuesday Night: Overcast, with a low around 74°F23°C. Light wind from the ENE around 4 mph7 km/h. 85% chance of light rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 987°F31°C
Feels 102°F39°C
72°F22°C0.97 in24.7 mm· 100%89%Heavy RainSSW 11 mph17 km/h
ThursdaySep 1071°F22°C68°F20°C0.54 in13.8 mm· 95%97%RainNE 5 mph8 km/h
FridaySep 1173°F23°C66°F19°C1.1 in28 mm· 90%90%RainN 4 mph7 km/h
SaturdaySep 1278°F26°C70°F21°C0.1 in2.5 mm· 22%78%Light RainNE 4 mph7 km/h
SundaySep 1380°F26°C70°F21°C0.07 in1.8 mm· 28%79%DrizzleNE 4 mph6 km/h
MondaySep 1485°F29°C
Feels 93°F34°C
73°F23°C0.07 in1.7 mm· 32%64%ShowersS 5 mph7 km/h
TuesdaySep 1580°F27°C74°F23°C0.41 in10.3 mm· 85%93%Light RainENE 5 mph8 km/h
WednesdaySep 1676°F25°C72°F22°C0.55 in13.9 mm· 79%97%Light RainNE 5 mph8 km/h
ThursdaySep 1776°F24°C71°F22°C0.47 in12 mm· 68%93%Light RainNNE 6 mph10 km/h
FridaySep 1876°F24°C70°F21°C0.51 in13 mm· 64%86%Light RainN 7 mph12 km/h
SaturdaySep 1976°F24°C70°F21°C0.98 in25 mm· 63%83%RainN 9 mph14 km/h
SundaySep 2076°F25°C70°F21°C1.22 in31 mm· 63%83%RainNNE 10 mph16 km/h
MondaySep 2178°F25°C70°F21°C0.74 in18.9 mm· 54%73%RainE 9 mph14 km/h
TuesdaySep 2279°F26°C69°F21°C0.48 in12.3 mm· 36%65%ShowersNNE 8 mph12 km/h
WednesdaySep 2379°F26°C68°F20°C0.22 in5.6 mm· 26%58%ShowersNNE 6 mph9 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: 35.8209°N, 139.5579°E·Elevation: 13m·Timezone: Asia/Tokyo·Population: 166,017