Weather MCP Server

A Model Context Protocol (MCP) server that provides real-time weather data to Claude using the Open-Meteo API — free, no API key required.

Live UI: ui-plum-five-69.vercel.app

Tool

getWeather — Returns current weather for a given city.

Response includes:

• Condition (e.g. Clear sky, Rain, Thunderstorm)

• Temperature (°C)

• Humidity (%)

• Wind speed (km/h)

Related MCP server: weather-mcp-server

How it works

1. Geocodes the city name using the Open-Meteo Geocoding API

2. Fetches live weather using the Open-Meteo Forecast API

No API key or account needed.

Setup

1. Install dependencies:

   npm install

2. Register the MCP server with Claude Code:

   claude mcp add weather-example npx tsx /path/to/main.ts

3. Restart Claude Code — the getWeather tool will be available in your session.

Usage

Once registered, ask Claude things like:

• "What's the weather in Tokyo?"

• "Get the weather for New York"

• "Is it raining in London?"

UI

A React web app with city search and animated 5-day forecast is available at: https://ui-plum-five-69.vercel.app

To run it locally:

cd ui
npm install
npm run dev

Requirements

• Node.js 18+

• Claude Code