n8n Weather Webhook: Get City Forecast via OpenWeatherMap

Get City Forecasts on Demand with an n8n Weather Webhook (OpenWeatherMap)

This n8n automation workflow turns a simple webhook request into a city weather forecast by calling OpenWeatherMap. Send a request, get forecast data—ideal for building reliable weather-aware features into your apps and automations.

What this workflow does

Designed as a companion workflow for a blog post, this workflow provides a straightforward pattern for exposing weather forecasting via HTTP:

• Receives an incoming request through the n8n Webhook trigger.
• Processes request details using a set node to prepare the data needed for the forecast lookup.
• Fetches the forecast from OpenWeatherMap using the workflow’s OpenWeatherMap integration.
• Returns the resulting forecast information to the caller.

Use cases

• SaaS dashboards: show city forecasts without running a scheduled job.
• Customer-facing automations: request weather details based on a city entered in a form or API call.
• Ops and monitoring: trigger downstream steps (e.g., notifications) when weather conditions change for specific locations.
• Personal tooling: power lightweight apps or scripts that need quick city forecast lookups.

Technical details

• Workflow type: n8n automation workflow
• Nodes / integrations: webhook, set, OpenWeatherMap
• Goal: provide an HTTP-accessible endpoint that returns city forecast data via OpenWeatherMap

If you’re an n8n user, automation engineer, or SaaS operator looking for a clean webhook-based approach to weather forecasting, this workflow offers a practical foundation you can adapt.