Current Conditions
Iiyama, Nagano
Wind
SE 3 mph5 km/h
Humidity
67%
Cloud Cover
63%
As of Wednesday, September 23, 2026 at 11:35 AM GMT+9
Today's Outlook
Day
Mostly cloudy and warm, with a high of 75°F24°C and morning low of 69°F20°C. Light wind from the SE around 3 mph5 km/h. 49% chance of drizzle around midday.
Night
Overcast, with a low around 66°F19°C. Light wind from the SE around 3 mph4 km/h. 75% chance of light rain throughout the night.
7-Day Forecast
| Day | Condition | High (°F) | Low (°F) | Precip (mm) | Cloud Cover (%) | Wind (mph) | |
|---|---|---|---|---|---|---|---|
| Showers | High 75°F24°C | Low 66°F19°C | Precip 0.08 in2 mm75% | Cloud 69% | Wind SE 3 mph5 km/h | Wednesday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 69°F20°C. Light wind from the SE around 3 mph5 km/h. 49% chance of drizzle around midday. Wednesday Night: Overcast, with a low around 66°F19°C. Light wind from the SE around 3 mph4 km/h. 75% chance of light rain throughout the night. | |
| Light Rain | High 71°F21°C | Low 63°F17°C | Precip 0.3 in7.6 mm99% | Cloud 87% | Wind N 3 mph5 km/h | Thursday: Overcast and warm, with a high of 71°F21°C and morning low of 63°F17°C. Light wind from the NNW around 4 mph6 km/h. 99% chance of light rain throughout the day. Thursday Night: Overcast, with a low around 64°F18°C. Light wind from the NE around 3 mph5 km/h. 71% chance of light rain throughout the night. | |
| Light Rain | High 72°F22°C | Low 59°F15°C | Precip 0.06 in1.6 mm36% | Cloud 86% | Wind NNE 2 mph4 km/h | Friday: Mostly cloudy and warm, with a high of 72°F22°C and morning low of 59°F15°C. Light wind from the N around 3 mph4 km/h. 19% chance of drizzle around midday. Friday Night: Overcast, with a low around 60°F16°C. Light wind from the NE around 2 mph3 km/h. 36% chance of light rain in the evening. | |
| Rain | High 64°F18°C | Low 59°F15°C | Precip 0.72 in18.3 mm91% | Cloud 99% | Wind SE 3 mph4 km/h | Saturday: Overcast and mild, with a high of 64°F18°C and morning low of 59°F15°C. Light wind from the SE around 3 mph4 km/h. 91% chance of rain throughout the day. Saturday Night: Overcast, with a low around 60°F16°C. Light wind from the SE around 2 mph4 km/h. 90% chance of rain throughout the night. | |
| Light Rain | High 67°F19°C | Low 58°F15°C | Precip 0.33 in8.3 mm74% | Cloud 95% | Wind SSE 3 mph5 km/h | Sunday: Overcast and mild, with a high of 67°F19°C and morning low of 58°F15°C. Light wind from the SSE around 3 mph5 km/h. 74% chance of light rain throughout the day. Sunday Night: Overcast, with a low around 59°F15°C. Light wind from the SSE around 3 mph5 km/h. 56% chance of light rain throughout the night. | |
| Rain | High 69°F20°C | Low 60°F16°C | Precip 0.5 in12.7 mm82% | Cloud 96% | Wind SSE 3 mph4 km/h | Monday: Overcast and warm, with a high of 69°F20°C and morning low of 60°F16°C. Light wind from the S around 3 mph4 km/h. 82% chance of rain throughout the day. Monday Night: Overcast, with a low around 61°F16°C. Light wind from the SSE around 3 mph4 km/h. 79% chance of rain throughout the night. | |
| Light Rain | High 68°F20°C | Low 61°F16°C | Precip 0.67 in16.9 mm66% | Cloud 92% | Wind NNE 2 mph4 km/h | Tuesday: Overcast and mild, with a high of 68°F20°C and morning low of 61°F16°C. Light wind from the N around 3 mph4 km/h. 63% chance of light rain throughout the day. Tuesday Night: Overcast, with a low around 61°F16°C. Light wind from the E around 2 mph4 km/h. 66% chance of light rain throughout the night. |
15-Day Forecast
| Day | High | Low | Precip | Cloud Cover | Condition | Wind | |
|---|---|---|---|---|---|---|---|
| WednesdaySep 23 | 75°F24°C | 66°F19°C | 0.08 in2 mm· 75% | 69% | Showers | SE 3 mph5 km/h | |
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 69°F20°C. Light wind from the SE around 3 mph5 km/h. 49% chance of drizzle around midday. NightOvercast, with a low around 66°F19°C. Light wind from the SE around 3 mph4 km/h. 75% chance of light rain throughout the night. | |||||||
| ThursdaySep 24 | 71°F21°C | 63°F17°C | 0.3 in7.6 mm· 99% | 87% | Light Rain | N 3 mph5 km/h | |
DayOvercast and warm, with a high of 71°F21°C and morning low of 63°F17°C. Light wind from the NNW around 4 mph6 km/h. 99% chance of light rain throughout the day. NightOvercast, with a low around 64°F18°C. Light wind from the NE around 3 mph5 km/h. 71% chance of light rain throughout the night. | |||||||
| FridaySep 25 | 72°F22°C | 59°F15°C | 0.06 in1.6 mm· 36% | 86% | Light Rain | NNE 2 mph4 km/h | |
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 59°F15°C. Light wind from the N around 3 mph4 km/h. 19% chance of drizzle around midday. NightOvercast, with a low around 60°F16°C. Light wind from the NE around 2 mph3 km/h. 36% chance of light rain in the evening. | |||||||
| SaturdaySep 26 | 64°F18°C | 59°F15°C | 0.72 in18.3 mm· 91% | 99% | Rain | SE 3 mph4 km/h | |
DayOvercast and mild, with a high of 64°F18°C and morning low of 59°F15°C. Light wind from the SE around 3 mph4 km/h. 91% chance of rain throughout the day. NightOvercast, with a low around 60°F16°C. Light wind from the SE around 2 mph4 km/h. 90% chance of rain throughout the night. | |||||||
| SundaySep 27 | 67°F19°C | 58°F15°C | 0.33 in8.3 mm· 74% | 95% | Light Rain | SSE 3 mph5 km/h | |
DayOvercast and mild, with a high of 67°F19°C and morning low of 58°F15°C. Light wind from the SSE around 3 mph5 km/h. 74% chance of light rain throughout the day. NightOvercast, with a low around 59°F15°C. Light wind from the SSE around 3 mph5 km/h. 56% chance of light rain throughout the night. | |||||||
| MondaySep 28 | 69°F20°C | 60°F16°C | 0.5 in12.7 mm· 82% | 96% | Rain | SSE 3 mph4 km/h | |
DayOvercast and warm, with a high of 69°F20°C and morning low of 60°F16°C. Light wind from the S around 3 mph4 km/h. 82% chance of rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the SSE around 3 mph4 km/h. 79% chance of rain throughout the night. | |||||||
| TuesdaySep 29 | 68°F20°C | 61°F16°C | 0.67 in16.9 mm· 66% | 92% | Light Rain | NNE 2 mph4 km/h | |
DayOvercast and mild, with a high of 68°F20°C and morning low of 61°F16°C. Light wind from the N around 3 mph4 km/h. 63% chance of light rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the E around 2 mph4 km/h. 66% chance of light rain throughout the night. | |||||||
| WednesdaySep 30 | 69°F21°C | 60°F16°C | 0.65 in16.6 mm· 71% | 80% | Light Rain | NE 3 mph5 km/h | |
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 60°F16°C. Light wind from the NNW around 3 mph5 km/h. 71% chance of light rain throughout the day. NightOvercast, with a low around 61°F16°C. Light wind from the ENE around 3 mph4 km/h. 63% chance of light rain throughout the night. | |||||||
| ThursdayOct 1 | 65°F18°C | 57°F14°C | 0.55 in14 mm· 68% | 80% | Light Rain | NNW 4 mph6 km/h | |
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 58°F15°C. Light wind from the NNW around 4 mph7 km/h. 68% chance of light rain throughout the day. NightOvercast, with a low around 57°F14°C. Light wind from the N around 3 mph5 km/h. 64% chance of light rain throughout the night. | |||||||
| FridayOct 2 | 63°F17°C | 53°F11°C | 0.28 in7 mm· 43% | 67% | Showers | N 4 mph6 km/h | |
DayMostly cloudy and mild, with a high of 63°F17°C and morning low of 53°F11°C. Light wind from the N around 4 mph7 km/h. 36% chance of showers throughout the day. NightMostly cloudy, with a low around 54°F12°C. Light wind from the NNE around 3 mph5 km/h. 43% chance of showers throughout the night. | |||||||
| SaturdayOct 3 | 65°F19°C | 51°F11°C | 0.16 in4 mm· 27% | 63% | Showers | ESE 3 mph6 km/h | |
DayMostly cloudy and mild, with a high of 65°F19°C and morning low of 51°F11°C. Light wind from the ESE around 4 mph6 km/h. 27% chance of showers throughout the day. NightMostly cloudy, with a low around 52°F11°C. Light wind from the ESE around 3 mph5 km/h. 26% chance of showers throughout the night. | |||||||
| SundayOct 4 | 66°F19°C | 53°F12°C | 0.2 in5 mm· 31% | 63% | Showers | NE 4 mph6 km/h | |
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 53°F12°C. Light wind from the N around 4 mph6 km/h. 31% chance of showers throughout the day. NightMostly cloudy, with a low around 54°F12°C. Light wind from the E around 4 mph6 km/h. 30% chance of showers throughout the night. | |||||||
| MondayOct 5 | 66°F19°C | 52°F11°C | 0.12 in3.1 mm· 23% | 57% | Drizzle | NNE 4 mph6 km/h | |
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 52°F11°C. Light wind from the N around 4 mph6 km/h. 23% chance of drizzle throughout the day. NightMostly cloudy, with a low around 53°F12°C. Light wind from the NE around 3 mph5 km/h. 22% chance of drizzle throughout the night. | |||||||
| TuesdayOct 6 | 66°F19°C | 52°F11°C | 0.18 in4.6 mm· 27% | 56% | Showers | NNE 4 mph6 km/h | |
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 52°F11°C. Light wind from the N around 4 mph7 km/h. 25% chance of showers throughout the day. NightMostly cloudy, with a low around 53°F11°C. Light wind from the NE around 3 mph6 km/h. 27% chance of showers throughout the night. | |||||||
| WednesdayOct 7 | 66°F19°C | 53°F11°C | 0.21 in5.4 mm· 29% | 61% | Showers | NNE 4 mph6 km/h | |
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 53°F11°C. Light wind from the N around 4 mph7 km/h. 29% chance of showers throughout the day. NightMostly cloudy, with a low around 53°F12°C. Light wind from the NE around 3 mph5 km/h. 25% chance of showers throughout the night. | |||||||
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 →
Coordinates: 36.8500°N, 138.3667°E·Elevation: 311m·Timezone: Asia/Tokyo·Population: 20,118