Weather Forecast

Get hourly weather forecasts to plan outdoor activities (running, cycling, climbing, skiing, etc.).

When to Invoke

•User asks about weather for outdoor activity planning
•User wants to know when to go outside / best time for a run
•Phrases like "good weather window", "when should I go running", "cloud cover forecast"
•User mentions travel and weather (skill works globally with auto model selection)

Quick Usage

bash

~/.claude/skills/weather/weather.sh                    # Vienna (default)
~/.claude/skills/weather/weather.sh -l Innsbruck       # Any location by name
~/.claude/skills/weather/weather.sh -l "Chamonix, FR"  # Include country for accuracy

Options

Flag	Description	Default
`-l, --location NAME`	Search location by name	Vienna
`--lat N`	Override latitude	48.18601
`--lon N`	Override longitude	16.32105
`--days N`	Forecast days (max 2 for ICON-D2)	2
`--threshold N`	Cloud % for "good" windows	30
`--model MODEL`	Force model: auto, icon_d2, best_match	auto
`--raw`	Output raw JSON	-

What It Shows

For each daylight hour:

•Cloud cover - Visual bar + percentage
•Temperature - Actual temp in Celsius
•Wind speed - km/h
•Rain probability - Percentage

Plus:

•Current conditions - Temp, feels-like, clouds, wind, conditions
•Best windows - Consecutive hours with low clouds AND low rain probability
•Sunrise/sunset - Daylight planning

Output Example

code

Weather for Vienna (48.19°N, 16.32°E) - ICON-D2
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Now: -1°C (feels -5°C), 82% clouds, 11 km/h wind
Conditions: Overcast
Sunrise: 07:43  Sunset: 16:18

📅 2026-01-08:
  Time  Cloud                         Temp   Wind  Rain%
  08:00   0% ████████████████████  -8°C   7km/h   0% ✓
  09:00   0% ████████████████████  -7°C   8km/h   0% ✓
  10:00   0% ████████████████████  -5°C  10km/h   0% ✓
  11:00   0% ████████████████████  -4°C   9km/h   0% ✓
  12:00  64% ████████░░░░░░░░░░░░  -3°C   9km/h   0%

Best outdoor windows:
  ✓ 08:00-11:00  0% clouds, -8--4°C, 10km/h max wind

Model Selection

The skill auto-selects the best weather model:

Model	Resolution	Region	Forecast
ICON-D2	2.2km	Central Europe/Alps	48 hours
Best Match	varies	Global	7+ days

For Alps/Europe locations, ICON-D2 provides superior accuracy. The skill auto-detects location and switches appropriately.

Activity Considerations

Different activities have different weather needs:

•Running/Hiking: Cloud cover + temperature
•Cycling: Wind is critical (>25km/h = challenging)
•Climbing: Needs dry conditions, check precipitation history
•Skiing: Check specialized sources for snow/avalanche
•Open water: Consider water temp (not in this API)

This skill focuses on general outdoor windows. For specialized forecasts:

•Alpine: bergfex.at
•Avalanche: avalanche.report
•Marine: windy.com marine layer

Data Source

•API: Open-Meteo (free, no key required)
•Units: Metric (Celsius, km/h, mm)
•Update frequency: Every 3 hours (ICON-D2)
•Timezone: Auto-detected based on location

Dependencies

•curl - HTTP requests
•jq - JSON parsing (brew install jq)