MCP Weather Server

A Model Context Protocol server exposing three weather tools over the free Open-Meteo API, for use with Claude Desktop or any MCP client.

Tools

City names are resolved to coordinates via Open-Meteo's geocoding endpoint, so tools take plain names rather than lat/long. No API key required.

Related MCP server: mcp-weather-server

Setup

uv venv
source .venv/bin/activate
uv add "mcp[cli]" httpx

Use with Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "weather": {
      "command": "/absolute/path/to/.venv/bin/python",
      "args": ["/absolute/path/to/weather.py"]
    }
  }
}

Restart Claude Desktop. Both paths must be absolute.

Notes

Built against MCP Python SDK v2 (MCPServer, formerly FastMCP). Runs over stdio, so the client launches the server as a subprocess.

Known limitations

• No retry or timeout handling on the upstream API; a network failure surfaces as a tool error rather than a graceful message.

• Unknown city names return a message, but ambiguous ones silently take the first geocoding match.