Weather via Slack 🌦️💬

Overview

This workflow provides real-time weather updates via Slack using a custom Slack command :
/weather [cityname]

Users can type this command in Slack (eg, /weather New York ), and the workflow will fetch and post the latest forecast, including temperature, wind conditions, and a short weather summary.

While this workflow is designed for Slack, users can modify it to send weather updates via email, Discord, Microsoft Teams, or any other communication platform .

How It Works

1. Webhook Trigger – The workflow is triggered when a user runs /weather [cityname] in Slack.
2. Geocoding with OpenStreetMap – The city name is converted into latitude and longitude coordinates.
3. Weather Data from NOAA – The coordinates are used to retrieve detailed weather data from the National Weather Service (NWS) API.
4. Formatted Weather Report – The workflow extracts relevant weather details, such as:
   • Temperature (°F/°C)
   • Wind speed and direction
   • Short forecast summary
5. Slack Notification – The weather forecast is posted back to the Slack channel in a structured format.

Requirements

• A custom Slack app with:
  • The ability to create a Slash Command ( /weather )
  • OAuth permissions to post messages in Slack
• An n8n instance to host and execute the workflow

Customization

• Replace Slack messaging with email, Discord, Microsoft Teams, Telegram, or another service .
• Modify the weather data format for different output preferences.
• Set up scheduled weather updates for specific locations.

Use Cases

• Instantly check the weather for any location directly in Slack.
• Automate weather reports for team members or projects.
• Useful for remote teams, outdoor event planning, or general weather tracking.

Setup Instructions

1. Create a custom Slack app :
   • Go to api.slack.com/apps and create a new app.
   • Add a Slash Command ( /weather ) with the webhook URL from n8n.
   • Enable OAuth scopes for sending messages.
2. Deploy the webhook – Ensure it can receive and process Slack commands.
3. Run the workflow – Type /weather [cityname] in Slack and receive instant weather updates.