Current weather and forecasts (up to 16 days) via openmeteo CLI. No API key required.

Quick reference

openmeteo weather --current --city=Berlin --llm
openmeteo weather --current --forecast-days=2 --city=London --llm
openmeteo weather --forecast-days=7 --forecast-since=5 --city=Rome --llm
openmeteo weather --current --lat=48.85 --lon=2.35 --llm

Location (pick one)

• --city=NAME — city name (auto-geocoded)
• --city=NAME --country=CODE — disambiguate (e.g. Portland --country=US)
• --lat=NUM --lon=NUM — direct coordinates

Options

• --current — current conditions
• --forecast-days=N — forecast length, 1–16 (default 7)
• --forecast-since=N — start from day N (1=today, 2=tomorrow). Must be <= forecast-days.
• --hourly-params=LIST — override hourly variables (comma-separated)
• --daily-params=LIST — override daily variables (comma-separated)
• --current-params=LIST — override current variables (comma-separated)
• --temperature-unit=UNIT — celsius (default) / fahrenheit
• --llm — always pass this

Variables

Defaults are sensible for general weather. Override only when needed.

Current & hourly:

• temperature_2m — air temp, C
• apparent_temperature — feels-like, C
• precipitation — rain+showers+snow, mm
• precipitation_probability (hourly only) — chance of precipitation, %
• weather_code — condition, auto-resolved to text
• wind_speed_10m — wind, km/h
• wind_gusts_10m — gusts, km/h
• cloud_cover — cloud cover, %
• snowfall — snowfall, cm
• uv_index (hourly only) — UV index

Daily:

• temperature_2m_max / temperature_2m_min — max/min temp, C
• precipitation_sum — total precipitation, mm
• precipitation_probability_max — max precipitation chance, %
• weather_code — dominant condition
• wind_speed_10m_max — max wind, km/h
• sunrise / sunset — times
• snowfall_sum — total snowfall, cm

Rules

• Always pass --llm.
• Quote all user-provided values in shell commands: --city="New York", --city="St. Petersburg". Only known-safe tokens (numbers, single ASCII words) may be unquoted.
• Never use help subcommand or --raw — work only with what's described here.
• No location specified -> use the user's default city/country if known from session context.
• Summarize results naturally — never paste raw output.
• Use --forecast-days=1 for today, =2 for tomorrow — minimize token waste.
• Use --forecast-since=N to skip to a specific future day.
• For targeted questions, override params to fetch only what's needed.
• When the user switches cities ("and what about London?"), carry over all params used in prior weather queries this conversation — including any added in follow-ups. The new city gets the union of all previously requested params.

Examples

"What's the weather like?" -> openmeteo weather --current --city=Berlin --llm Summarize: "Clear, -12C (feels -17C), wind 9 km/h."

"When will the rain stop?" -> openmeteo weather --forecast-days=2 --city=Berlin --hourly-params=precipitation,precipitation_probability,weather_code --llm Find when precipitation hits ~0. Answer: "Should stop around 14:00."

"Do I need an umbrella?" -> openmeteo weather --forecast-days=1 --city=Berlin --hourly-params=precipitation,precipitation_probability,weather_code --llm "Yes — 70% chance between 11:00-15:00, up to 2mm."

"Weather this weekend in Rome?" -> openmeteo weather --forecast-days=7 --forecast-since=5 --city=Rome --daily-params=temperature_2m_max,temperature_2m_min,weather_code,precipitation_sum --llm Present only Sat/Sun: "Saturday: 14/8C, partly cloudy. Sunday: 16/9C, clear."

"Temperature outside?" -> openmeteo weather --current --city=Berlin --current-params=temperature_2m,apparent_temperature --llm "-5C, feels like -9C."