{
  "name": "Tromsø",
  "type": "city",
  "url": "https://snowingplaces.com/cities/tromso/",
  "summary": "City in Arctic Norway, above the Arctic Circle, with snow on the ground all winter and the northern lights overhead.",
  "location": {
    "country": "Norway",
    "region": "Troms",
    "latitude": 69.65,
    "longitude": 18.96
  },
  "elevationMetres": {
    "city": 9
  },
  "factsVerified": false,
  "forecast": {
    "generatedUtc": "2026-09-18T16:00:00.000Z",
    "models": [
      "ECMWF IFS",
      "NOAA GFS",
      "DWD ICON"
    ],
    "updateFrequency": "every 3 hours",
    "city": {
      "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": 8,
        "windKmh": 3,
        "gustKmh": 5,
        "freezingLevelM": 1100
      },
      "days": [
        {
          "day": "Tonight",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsAgreeing": 3,
          "temperatureC": {
            "min": 6,
            "max": 8
          },
          "maxGustKmh": 6,
          "freezingLevelM": 1100
        },
        {
          "day": "Sat",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsAgreeing": 3,
          "temperatureC": {
            "min": 4,
            "max": 11
          },
          "maxGustKmh": 10,
          "freezingLevelM": 1300
        },
        {
          "day": "Sun",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsAgreeing": 3,
          "temperatureC": {
            "min": 6,
            "max": 11
          },
          "maxGustKmh": 10,
          "freezingLevelM": 1350
        },
        {
          "day": "Mon",
          "weather": "Rain",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsAgreeing": 3,
          "temperatureC": {
            "min": 7,
            "max": 9
          },
          "maxGustKmh": 18,
          "freezingLevelM": 1200
        },
        {
          "day": "Tue",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsAgreeing": 3,
          "temperatureC": {
            "min": 7,
            "max": 10
          },
          "maxGustKmh": 23,
          "freezingLevelM": 1400
        },
        {
          "day": "Wed",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsAgreeing": 3,
          "temperatureC": {
            "min": 8,
            "max": 11
          },
          "maxGustKmh": 53,
          "freezingLevelM": 1650
        },
        {
          "day": "Thu",
          "weather": "Rain",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsAgreeing": 2,
          "temperatureC": {
            "min": 7,
            "max": 11
          },
          "maxGustKmh": 35,
          "freezingLevelM": 1400
        }
      ],
      "outlookDays8To14": [
        {
          "day": "Fri 25 Sep",
          "weather": "Rain",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsWithData": 3,
          "modelsShowingSnow": 0,
          "temperatureC": {
            "min": 8,
            "max": 11
          }
        },
        {
          "day": "Sat 26 Sep",
          "weather": "Rain",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsWithData": 2,
          "modelsShowingSnow": 0,
          "temperatureC": {
            "min": 8,
            "max": 11
          }
        },
        {
          "day": "Sun 27 Sep",
          "weather": "Rain",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsWithData": 2,
          "modelsShowingSnow": 0,
          "temperatureC": {
            "min": 6,
            "max": 9
          }
        },
        {
          "day": "Mon 28 Sep",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsWithData": 2,
          "modelsShowingSnow": 0,
          "temperatureC": {
            "min": 6,
            "max": 8
          }
        },
        {
          "day": "Tue 29 Sep",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsWithData": 2,
          "modelsShowingSnow": 0,
          "temperatureC": {
            "min": 6,
            "max": 11
          }
        },
        {
          "day": "Wed 30 Sep",
          "weather": "Rain",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsWithData": 2,
          "modelsShowingSnow": 0,
          "temperatureC": {
            "min": 5,
            "max": 9
          }
        },
        {
          "day": "Thu 1 Oct",
          "weather": "Dry",
          "snowfall": "No snow",
          "snowfallCm": null,
          "modelsWithData": 2,
          "modelsShowingSnow": 0,
          "temperatureC": {
            "min": 3,
            "max": 8
          }
        }
      ],
      "modelledSnowDepth": "No snow on the ground",
      "modelledSnowDepthCm": 0,
      "localTimeAtForecast": "18:00",
      "timezone": "GMT+2"
    }
  },
  "snowRecord": {
    "metric": "average days per month with at least 1 cm of snowfall",
    "period": "2016–2025",
    "source": "ERA5 reanalysis via Open-Meteo",
    "elevation": "city centre",
    "daysPerMonth": {
      "january": 14.4,
      "february": 13.5,
      "march": 16.2,
      "april": 12.6,
      "may": 6.1,
      "june": 0.7,
      "july": 0,
      "august": 0,
      "september": 0.7,
      "october": 8,
      "november": 11.3,
      "december": 13
    },
    "shareOfAnnualSnowfallPercent": {
      "january": 19,
      "february": 14,
      "march": 18,
      "april": 11,
      "may": 6,
      "june": 0,
      "july": 0,
      "august": 0,
      "september": 1,
      "october": 6,
      "november": 11,
      "december": 13
    },
    "averageDailyTemperatureC": {
      "january": {
        "low": -8.1,
        "high": -3.4
      },
      "february": {
        "low": -6.8,
        "high": -2.3
      },
      "march": {
        "low": -5.8,
        "high": -0.8
      },
      "april": {
        "low": -3,
        "high": 2.7
      },
      "may": {
        "low": 1.7,
        "high": 7.9
      },
      "june": {
        "low": 7,
        "high": 13.2
      },
      "july": {
        "low": 10.5,
        "high": 17.3
      },
      "august": {
        "low": 9.6,
        "high": 15.7
      },
      "september": {
        "low": 6.4,
        "high": 11.8
      },
      "october": {
        "low": 0.6,
        "high": 4.7
      },
      "november": {
        "low": -3.7,
        "high": 0.3
      },
      "december": {
        "low": -6.4,
        "high": -1.9
      }
    },
    "wintersAsPercentOfAverage": {
      "2016/17": 95,
      "2017/18": 64,
      "2018/19": 101,
      "2019/20": 133,
      "2020/21": 90,
      "2021/22": 115,
      "2022/23": 105,
      "2023/24": 81,
      "2024/25": 136,
      "2025/26": 79
    },
    "holidays": {
      "christmas": {
        "years": 10,
        "yearsWithSnowOnGround": 10,
        "yearsWithFreshSnow": 10
      },
      "newYear": {
        "years": 10,
        "yearsWithSnowOnGround": 10,
        "yearsWithFreshSnow": 9
      },
      "midFebruary": {
        "years": 10,
        "yearsWithSnowOnGround": 10,
        "yearsWithFreshSnow": 9
      },
      "easter": {
        "years": 10,
        "yearsWithSnowOnGround": 10,
        "yearsWithFreshSnow": 7
      },
      "midJuly": {
        "years": 10,
        "yearsWithSnowOnGround": 0,
        "yearsWithFreshSnow": 0
      }
    },
    "note": "Absolute snowfall and depth are not published: ERA5 underestimates them in mountain terrain."
  },
  "sources": [
    {
      "label": "Tromsø Municipality on Wikidata",
      "url": "https://www.wikidata.org/wiki/Q26087"
    },
    {
      "label": "Elevation from the Open-Meteo terrain model at the city centre coordinates",
      "url": "https://open-meteo.com/en/docs/elevation-api"
    }
  ],
  "methodology": "https://snowingplaces.com/methodology/",
  "attribution": "snowingplaces.com. Weather data by Open-Meteo.com."
}