{ "name": "Sun Valley", "alternateNames": [ "サンバレー", "선밸리", "森瓦利" ], "type": "ski resort", "url": "https://snowingplaces.com/ski-resorts/sun-valley/", "summary": "A resort at Sun Valley and Ketchum, Idaho, with skiing on Bald Mountain and Dollar Mountain.", "location": { "country": "United States", "region": "Idaho", "latitude": 43.66, "longitude": -114.41 }, "elevationMetres": { "topLift": 2789, "village": 1753 }, "season": { "opens": "Late November", "closes": "Early April" }, "officialWebsite": "https://www.sunvalley.com", "factsVerified": false, "forecast": { "generatedUtc": "2026-09-18T16:00:00.000Z", "models": [ "ECMWF IFS", "NOAA GFS", "DWD ICON" ], "updateFrequency": "every 3 hours", "topLift": { "headline": "No snow in the next 24 hours.", "detail": "No snow expected in the next 7 days.", "confidence": { "label": "High confidence", "modelsAgreeing": 3, "reason": "all three forecast models agree" }, "next24Hours": { "snowfallCm": { "low": 0, "high": 0, "mean": 0 }, "modelsForecastingSnow": 0, "text": "Under 1 cm" }, "next7Days": { "snowfallCm": { "low": 0, "high": 0, "mean": 0 }, "modelsForecastingSnow": 0, "text": "Under 1 cm" }, "conditionsAtForecastTime": { "temperatureC": 6, "windKmh": 8, "gustKmh": 16, "freezingLevelM": 3750 }, "days": [ { "day": "Today", "weather": "Rain", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 2, "temperatureC": { "min": 1, "max": 8 }, "maxGustKmh": 27, "freezingLevelM": 3550 }, { "day": "Sat", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 0, "max": 10 }, "maxGustKmh": 25, "freezingLevelM": 3450 }, { "day": "Sun", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 0, "max": 13 }, "maxGustKmh": 23, "freezingLevelM": 3900 }, { "day": "Mon", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 1, "max": 14 }, "maxGustKmh": 20, "freezingLevelM": 4100 }, { "day": "Tue", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 2, "max": 15 }, "maxGustKmh": 24, "freezingLevelM": 4050 }, { "day": "Wed", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 1, "max": 16 }, "maxGustKmh": 28, "freezingLevelM": 4050 }, { "day": "Thu", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 3, "max": 17 }, "maxGustKmh": 34, "freezingLevelM": 4250 } ], "outlookDays8To14": [ { "day": "Fri 25 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 4, "max": 16 } }, { "day": "Sat 26 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 3, "max": 16 } }, { "day": "Sun 27 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 3, "max": 16 } }, { "day": "Mon 28 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 3, "max": 13 } }, { "day": "Tue 29 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 2, "max": 14 } }, { "day": "Wed 30 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 1, "max": 9 } }, { "day": "Thu 1 Oct", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": -2, "max": 8 } } ], "modelledSnowDepth": "No snow on the ground", "modelledSnowDepthCm": 0, "localTimeAtForecast": "10:00", "timezone": "GMT-6" }, "village": { "headline": "No snow in the next 24 hours.", "detail": "No snow expected in the next 7 days.", "confidence": { "label": "High confidence", "modelsAgreeing": 3, "reason": "all three forecast models agree" }, "next24Hours": { "snowfallCm": { "low": 0, "high": 0, "mean": 0 }, "modelsForecastingSnow": 0, "text": "Under 1 cm" }, "next7Days": { "snowfallCm": { "low": 0, "high": 0, "mean": 0 }, "modelsForecastingSnow": 0, "text": "Under 1 cm" }, "conditionsAtForecastTime": { "temperatureC": 13, "windKmh": 6, "gustKmh": 15, "freezingLevelM": 3750 }, "days": [ { "day": "Today", "weather": "Rain", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 2, "temperatureC": { "min": 8, "max": 15 }, "maxGustKmh": 27, "freezingLevelM": 3600 }, { "day": "Sat", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 6, "max": 17 }, "maxGustKmh": 24, "freezingLevelM": 3450 }, { "day": "Sun", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 7, "max": 20 }, "maxGustKmh": 23, "freezingLevelM": 3900 }, { "day": "Mon", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 8, "max": 21 }, "maxGustKmh": 20, "freezingLevelM": 4100 }, { "day": "Tue", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 9, "max": 21 }, "maxGustKmh": 24, "freezingLevelM": 4050 }, { "day": "Wed", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 8, "max": 22 }, "maxGustKmh": 28, "freezingLevelM": 4050 }, { "day": "Thu", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsAgreeing": 3, "temperatureC": { "min": 9, "max": 23 }, "maxGustKmh": 34, "freezingLevelM": 4250 } ], "outlookDays8To14": [ { "day": "Fri 25 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 11, "max": 23 } }, { "day": "Sat 26 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 10, "max": 23 } }, { "day": "Sun 27 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 10, "max": 23 } }, { "day": "Mon 28 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 10, "max": 20 } }, { "day": "Tue 29 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 9, "max": 20 } }, { "day": "Wed 30 Sep", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 8, "max": 16 } }, { "day": "Thu 1 Oct", "weather": "Dry", "snowfall": "No snow", "snowfallCm": null, "modelsWithData": 2, "modelsShowingSnow": 0, "temperatureC": { "min": 5, "max": 15 } } ], "modelledSnowDepth": "No snow on the ground", "modelledSnowDepthCm": 0, "localTimeAtForecast": "10:00", "timezone": "GMT-6" } }, "snowRecord": { "metric": "average days per month with at least 1 cm of snowfall", "period": "2016–2025", "source": "ERA5 reanalysis via Open-Meteo", "elevation": "mid-mountain", "daysPerMonth": { "january": 10.3, "february": 9.7, "march": 10.3, "april": 6.5, "may": 3.9, "june": 1.1, "july": 0, "august": 0, "september": 0.5, "october": 3.9, "november": 6, "december": 9.4 }, "shareOfAnnualSnowfallPercent": { "january": 15, "february": 19, "march": 18, "april": 8, "may": 5, "june": 1, "july": 0, "august": 0, "september": 1, "october": 5, "november": 10, "december": 18 }, "averageDailyTemperatureC": { "january": { "low": -13.2, "high": -2.7 }, "february": { "low": -12.7, "high": -2 }, "march": { "low": -9.9, "high": 1.3 }, "april": { "low": -6.6, "high": 5.7 }, "may": { "low": -2.8, "high": 11 }, "june": { "low": 2.2, "high": 18.6 }, "july": { "low": 7, "high": 24.7 }, "august": { "low": 6.5, "high": 23.5 }, "september": { "low": 2.4, "high": 18.1 }, "october": { "low": -3.8, "high": 9.4 }, "november": { "low": -8.8, "high": 2.5 }, "december": { "low": -13, "high": -2.1 } }, "wintersAsPercentOfAverage": { "2016/17": 148, "2017/18": 93, "2018/19": 122, "2019/20": 72, "2020/21": 73, "2021/22": 91, "2022/23": 131, "2023/24": 95, "2024/25": 100, "2025/26": 76 }, "holidays": { "christmas": { "years": 10, "yearsWithSnowOnGround": 9, "yearsWithFreshSnow": 10 }, "newYear": { "years": 10, "yearsWithSnowOnGround": 10, "yearsWithFreshSnow": 9 }, "midFebruary": { "years": 10, "yearsWithSnowOnGround": 10, "yearsWithFreshSnow": 10 }, "easter": { "years": 10, "yearsWithSnowOnGround": 10, "yearsWithFreshSnow": 5 }, "midJuly": { "years": 10, "yearsWithSnowOnGround": 0, "yearsWithFreshSnow": 0 } }, "note": "Absolute snowfall and depth are not published: ERA5 underestimates them in mountain terrain." }, "sources": [ { "label": "Sun Valley: Bald Mountain", "url": "https://www.sunvalley.com/the-mountain/bald-mountain/" }, { "label": "Sun Valley: getting here", "url": "https://www.sunvalley.com/about/getting-here/" }, { "label": "Wikipedia: Sun Valley, Idaho", "url": "https://en.wikipedia.org/wiki/Sun_Valley,_Idaho" }, { "label": "J2Ski: Sun Valley season dates", "url": "https://us.j2ski.com/american_ski_resorts/USA/Sun_Valley.html" } ], "methodology": "https://snowingplaces.com/methodology/", "attribution": "snowingplaces.com. Weather data by Open-Meteo.com." }