Weather MCP Server
Provides real-time weather data to Claude using the Open-Meteo API, with no API key required. Enables natural language queries like 'What's the weather in Tokyo?'.
README
☀️ Weather MCP Server
Real-time weather data for Claude — powered by Open-Meteo. No API key required.
What is this?
A Model Context Protocol (MCP) server that gives Claude the ability to fetch live weather and 5-day forecasts for any city in the world. Pair it with the included React UI for a standalone weather app.
MCP Tools
getWeather
Returns current conditions for a given city.
| Parameter | Type | Description |
|---|---|---|
city |
string |
Name of the city |
Returns: condition, temperature (°C), humidity (%), wind speed (km/h)
getForecast
Returns a 5-day daily forecast.
| Parameter | Type | Description |
|---|---|---|
latitude |
number |
Latitude |
longitude |
number |
Longitude |
Returns: daily high/low, precipitation, wind, weather code
Quickstart
1. Install dependencies
npm install
2. Register with Claude Code
claude mcp add weather-example npx tsx /path/to/main.ts
3. Ask Claude about the weather
What's the weather in Tokyo?
Will it rain in London this week?
Is it cold in New York right now?
Web UI
A React + Tailwind app with live city search, animated weather icons, current conditions, and a 5-day forecast strip.
Run locally:
cd ui
npm install
npm run dev
How it works
Claude → MCP tool call
↓
Open-Meteo Geocoding API (city name → lat/lon)
↓
Open-Meteo Forecast API (lat/lon → weather data)
↓
Claude
Everything is free and open — no accounts, no keys, no rate limits for reasonable usage.
Requirements
- Node.js 18+
- Claude Code
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