EnvironmentStandardNLODComing soon

Frost — MET Norway climate data

Name: Frost — MET Norway climate data
License: NLOD

Frost is MET Norway's API for historical meteorological observations and climate normals. Contains temperature, precipitation, wind and snow depth from hundreds of Norwegian weather stations. Climate normals are calculated over 30-year periods and are the standard reference for Norwegian climate research and planning.

—

Data volume

Daily

Updates

MCP tools

Frost — MET Norway climate data is on its way into the catalogue and is not connected yet. The endpoints below are a preview of planned coverage.

Example response — /observations

{
  "data": "..."
}

MCP integration

Available MCP tools

frost.klima.normaler

frost.observasjoner

frost.stasjoner.sok

Configuration for Claude Desktop / Cursor

{
  "mcpServers": {
    "frost": {
      "url": "https://data.ketl.no/mcp/frost",
      "headers": {
        "Authorization": "Bearer $KETL_API_KEY"
      }
    }
  }
}

Analysis apps that use this source

Ready-made tools built on Frost — MET Norway climate data data. Use them directly in the browser, or wire the same data into your own analysis via the API below.

Weather and climate

Weather forecasts, observations and climate data for all of Norway.

Climate normals

30-year climate normals (1991–2020) for Norwegian cities from the MET Norway Frost API — monthly mean temperature and precipitation totals for Oslo, Bergen, Trondheim, Stavanger and Tromsø.

API endpoints

GET

/observations

Historiske observasjoner

stationIds required: Kommaseparert liste over MET stasjons-IDer (f.eks. `SN18700` = Oslo Blindern). stationIds=SN18700
elements required: Kommaseparert liste over element-koder (f.eks. `mean(air_temperature P1D)`). elements=mean(air_temperature P1D)
referencetime required: ISO 8601 tidsintervall `<start>/<end>` (f.eks. `2026-05-01/2026-05-10`). referencetime=2026-05-01/2026-05-10

Show curl example

# GET https://data.ketl.no/api/connectors/frost/observations?stationIds=SN18700&elements=mean(air_temperature%20P1D)&referencetime=2026-05-01%2F2026-05-10
curl \
  -H "Accept: application/json" \
  "https://data.ketl.no/api/connectors/frost/observations?stationIds=SN18700&elements=mean(air_temperature%20P1D)&referencetime=2026-05-01%2F2026-05-10"

Authenticated call — add one of these headers: x-api-key: ketl_… · Authorization: Bearer … — See the full reference in the documentation.

GET

/klimanormaler

Klimanormaler (30-årsperioder)

by required: Bynavn (avgjør stasjon via CITY_STATIONS-lookup). by=oslo

Show curl example

# GET https://data.ketl.no/api/connectors/frost/klimanormaler?by=oslo
curl \
  -H "Accept: application/json" \
  "https://data.ketl.no/api/connectors/frost/klimanormaler?by=oslo"

Authenticated call — add one of these headers: x-api-key: ketl_… · Authorization: Bearer … — See the full reference in the documentation.

GET

/health

Tilgjengelighetssjekk

Show curl example

# GET https://data.ketl.no/api/connectors/frost/health
curl \
  -H "Accept: application/json" \
  "https://data.ketl.no/api/connectors/frost/health"

Authenticated call — add one of these headers: x-api-key: ketl_… · Authorization: Bearer … — See the full reference in the documentation.

Access and pricing

Frost — MET Norway climate data is planned for the Standard plan. It is not connected yet. Follow updates

klimavaertemperaturnedboermeteorologiMET