🇯🇵 Weather in Nagaoka
Map Overlays:
Hourly Forecast for Nagaoka
13:00
30°
29%
14:00
31°
36%
15:00
30°
36%
16:00
30°
25%
17:00
29°
49%
18:00
28°
25%
19:00
25°
16%
20:00
24°
20%
21:00
23°
20%
22:00
23°
20%
23:00
23°
20%
00:00
23°
20%
01:00
22°
21%
02:00
22°
21%
03:00
22°
22%
04:00
22°
23%
05:00
22°
19%
06:00
24°
15%
07:00
27°
11%
08:00
29°
8%
09:00
30°
12%
10:00
30°
22%
11:00
31°
24%
12:00
31°
22%
14-Day Forecast for Nagaoka
2026-07-21
Patchy rain nearby
31° /
23°
2026-07-22
Mist
32° /
22°
2026-07-23
Mist
30° /
22°
2026-07-24
Light rain shower
30° /
22°
2026-07-25
Light rain shower
27° /
22°
2026-07-26
Light rain shower
25° /
21°
2026-07-27
Light rain shower
27° /
21°
Additional Forecasts for Nagaoka
Air Quality
💨 US EPA Index 2 (Moderate)
CO (Carbon Monoxide) 155.0 μg/m³
O₃ (Ozone) 128.0 μg/m³
NO₂ (Nitrogen Dioxide) 2.2 μg/m³
SO₂ (Sulphur Dioxide) 4.5 μg/m³
PM2.5 (Fine particles) 17.5 μg/m³
PM10 (Coarse particles) 21.8 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Japan
Weather in Nagaoka — FAQ
Answers refreshed each request based on current conditions in Nagaoka.
What is the weather like right now in Nagaoka?
Right now in Nagaoka, Japan the temperature is 30.4°C (feels like 36.7°C), with partly cloudy. Relative humidity is 79% and wind is 6.8 km/h.
What is today's high and low temperature in Nagaoka?
Today's forecast high in Nagaoka is 30.6°C and the overnight low is 22.9°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Nagaoka today?
The chance of precipitation in Nagaoka today is 78%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Nagaoka differ from nearby cities?
Even short distances can change temperatures noticeably. Nagaoka's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.