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weather

The weather skill retrieves current conditions and forecasts for any global location using wttr.in or Open-Meteo APIs without requiring an API key. Use it when users ask about current weather, temperature, precipitation, or multi-day forecasts for travel planning or daily reference, but avoid it for historical weather data, climate trend analysis, severe weather alerts, or specialized aviation and marine forecasts.

View source Repository: openagent

Install in Claude Code

Copy

git clone --depth 1 https://github.com/the-open-agent/openagent /tmp/weather && cp -r /tmp/weather/skills/weather ~/.claude/skills/weather

Then start a new Claude Code session; the skill loads automatically.

Definition

SKILL.md

# Weather Skill

Get current weather conditions and forecasts.

## When to Use

✅ **USE this skill when:**

- "What's the weather?"
- "Will it rain today/tomorrow?"
- "Temperature in [city]"
- "Weather forecast for the week"
- Travel planning weather checks

## When NOT to Use

❌ **DON'T use this skill when:**

- Historical weather data → use weather archives/APIs
- Climate analysis or trends → use specialized data sources
- Hyper-local microclimate data → use local sensors
- Severe weather alerts → check official NWS sources
- Aviation/marine weather → use specialized services (METAR, etc.)

## Location

Always include a city, region, or airport code in weather queries.

## Commands

### Current Weather

```bash
# One-line summary
curl "wttr.in/London?format=3"

# Detailed current conditions
curl "wttr.in/London?0"

# Specific city
curl "wttr.in/New+York?format=3"
```

### Forecasts

```bash
# 3-day forecast
curl "wttr.in/London"

# Week forecast
curl "wttr.in/London?format=v2"

# Specific day (0=today, 1=tomorrow, 2=day after)
curl "wttr.in/London?1"
```

### Format Options

```bash
# One-liner
curl "wttr.in/London?format=%l:+%c+%t+%w"

# JSON output
curl "wttr.in/London?format=j1"

# PNG image
curl "wttr.in/London.png"
```

### Format Codes

- `%c` — Weather condition emoji
- `%t` — Temperature
- `%f` — "Feels like"
- `%w` — Wind
- `%h` — Humidity
- `%p` — Precipitation
- `%l` — Location

## Quick Responses

**"What's the weather?"**

```bash
curl -s "wttr.in/London?format=%l:+%c+%t+(feels+like+%f),+%w+wind,+%h+humidity"
```

**"Will it rain?"**

```bash
curl -s "wttr.in/London?format=%l:+%c+%p"
```

**"Weekend forecast"**

```bash
curl "wttr.in/London?format=v2"
```

## Notes

- No API key needed (uses wttr.in)
- Rate limited; don't spam requests
- Works for most global cities
- Supports airport codes: `curl wttr.in/ORD`