Kiso

Kiso-gun, Nagano-ken, Japan

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Current Weather

23°

Misty

Feels Like: 21°

Min: 19°

Max: 25°

The next few hours will be foggy, with today reaching 25°C and dropping to 20°C. The coming days will be light rain throughout the day.

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Hourly Forecast

23° 24° 25° 25° 25° 24° 24° 23° 22° 22° 22° 22° 21° 21° 21° 20° 20° 20° 20° 20° 20° 21° 23° 24°
6%
6%
6%
10am
11am
12pm
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4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
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5am
6am
7am
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9am
Today
Tomorrow

Daylight Hours

05:42

Sunrise

17:40

Sunset

11 hours 58 minutes of sunlight today

Moon

Waxing Gibbous

14:52

Moonrise

00:43

Moonset

Daily Forecast

Today

19°
25°

Tuesday

17°
26°

Wednesday

17°
24°

Thursday

17°
26°

Friday

16°
25°

Saturday

17°
19°

Sunday

18°
23°

Monday

17°
23°

Tuesday

14°
22°

Wednesday

13°
23°

Air Quality Data Available

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UV Index

No protection needed
2 Low
Low Extreme

Humidity

91% Very Humid
Low High

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Weather in Kiso today, September 21, 2026

Kiso could see fog on September 21, 2026, so early travel may need extra care. Visibility is the main watchpoint while the air stays still. The morning sky stays heavily clouded, with cover near 100% around 10:00. Grey conditions set the early tone before any later change.

The temperature range runs from about 19°C up to 25°C. Expect humidity between 83% and 98%, most humid near 23:00. Expect gentle winds, highest near 21:00 at 3.8 km/h.

Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 0.4 km, briefly nearer 0.1 km. Expect sunrise at 05:42, sunset at 17:40, and 11 hours 58 minutes of sunlight today overall.

In short, fog or mist is the watchpoint in Kiso on September 21, 2026; leave extra time for travel around a high of 25°C.

Frequently asked questions about weather in Kiso

How warm does it get in Kiso?

The warmest month in Kiso is August, with average high temperatures of 27°C. The average temperature during this period is around 22°C.

How cold does it get in Kiso?

The coldest month in Kiso is January, with average low temperatures of -8°C. The average temperature during this period is around -3°C.

What is the wettest time of year in Kiso?

The wettest month in Kiso is July, with an average of 356mm of precipitation.

What is the driest time of year in Kiso?

The driest month in Kiso is January, with an average of 103mm of precipitation.

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Metric (°C, km/h)