See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:31
Sunrise
17:41
Sunset
Moon
Waxing Crescent
10:29
Moonrise
20:17
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
Upgrade to access real-time air quality data for Iruma.
Resources
UV Index
Humidity
Weather in Iruma tomorrow, September 17, 2026
Iruma starts September 17, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Wetter spells lean into the morning, when rain odds reach about 100% near 00:00. Skies look heaviest around 00:00, with cover close to 99%.
The temperature range runs from about 18°C up to 23°C. The air stays humid, with relative humidity between 64% and 96% and the peak around 00:00. Winds stay light, near 3.1 km/h by 12:00, so the day feels still more than breezy.
Later hours look less wet than the morning, when rain odds were closer to 100%; afternoon chances sit nearer 0%. Residual cloud near 83% around 12:00 may linger. Horizontal visibility sits around 14.4 km, briefly nearer 7.6 km. Expect sunrise at 05:32, sunset at 17:40, and 12 hours 8 minutes of sunlight today overall.
Taken together, Iruma looks wet enough on September 17, 2026 that flexible outdoor plans work best, with temperatures peaking near 23°C.
Explore more weather forecasts
- Sayama, Saitama-ken
- Tokyo, Tokyo Prefecture
- Hannō, Saitama-ken
- Yokohama, Kanagawa
- Tokorozawa, Saitama-ken
- Osaka, Ōsaka-fu
- Hidaka, Saitama-ken
- Nagoya, Aichi-ken
- Ōi, Saitama-ken
- Sapporo, Hokkaido
- Morohongō, Saitama-ken
- Fukuoka, Fukuoka Prefecture
- Kamifukuoka, Saitama-ken
- Kawasaki, Kanagawa
- Kawagoe, Saitama-ken
- Kobe, Hyōgo
