weva

An R package with a Rapp-powered command-line interface (CLI) to generate a limited and opinionated weather report for a UK postcode.

Uses data from the:

• Open-Meteo API
• postcodes.io API

Install

You can install the package from the R console.

install.packages("pak") # if not yet installed
pak::pak("matt-dray/weva")

Then you can install the CLI.

weva::install_cli()

Use

Run weva from a terminal with a valid UK postcode—the only required positional argument—to receive a tiny weather report with segments for now and later.

weva wc2n5du

now 8.2°C ☀️ | +1h 7.6°C ☀️ 

The temperature values are styled with ANSI escape codes if your terminal supports them.

You can also supply options to:

• extend the forecast by a user-supplied number of --hours (shortcut -h)
• show a segment with today's --extremes (-e) of temperature

weva "WC2N 5DU" -h 24 -e

now 8.2°C ☀️ | +24h 11.1°C ☁️ | today 6.9°C to 10.7°C 

The Open-Meteo API returns 'current' data at the nearest 15 minutes and 'hourly' at the top of the hour. {weva} aligns these by rounding to the nearest hour before adding the user's --hours input.

To give more precise time-related information, you can show interpreted --datetimes (-d) for each segment.

weva "WC2N 5DU" -h 24 -e -d

2026-02-28 20:30 8.2°C ☀️ | 2026-03-01 21:00 11.1°C ☁️ | 2026-02-28 6.9°C to 10.7°C 

Run weva --help for further information.