Weather CLI

Use the weathercli command to retrieve weather information for any location worldwide.

Commands

Current Weather

Get real-time weather conditions including temperature, humidity, wind, and precipitation.

weathercli current "<location>"
weathercli current "<location>" --json

Returns: Current temperature, "feels like" temperature, humidity %, wind speed/direction, pressure, cloud cover, UV index, precipitation, weather condition description, and timestamp in local timezone.

Forecast

Get daily or hourly weather forecasts.

# Daily forecast (default: 7 days, max: 16)
weathercli forecast "<location>" --days <N>

# Hourly forecast (max: 384 hours)
weathercli forecast "<location>" --hourly --hours <N>

# JSON output for parsing
weathercli forecast "<location>" --json

Returns: For each day/hour: temperature (high/low or current), weather condition, precipitation probability and amount, wind speed/direction, UV index, sunrise/sunset times (daily only).

Location Search

Find coordinates and timezone information for a location.

weathercli search "<location>"
weathercli search "<location>" --json

Returns: Location name, coordinates (lat/lon), country, region/state, timezone.

Location Format

Locations are flexible and geocoded automatically:

City names: "London", "Tokyo", "New York"
City + country: "Paris, France", "Berlin, Germany"
City + state/region: "Portland, Oregon", "Barcelona, Catalonia"
Ambiguous names: Add country/region for precision

Options

--json - Output structured JSON (recommended for parsing)
--no-color - Disable color output (for plain text parsing)
--days N - Number of days for forecast (1-16, default: 7)
--hourly - Show hourly instead of daily forecast
--hours N - Number of hours for hourly forecast (1-384)
--verbose - Show detailed request information

Output Format

Human-Readable (default)

Color-coded temperatures, formatted with emojis and units. Times shown in location's local timezone.

JSON Structure

Current weather:

{
  "location": {
    "name": "Tokyo",
    "latitude": 35.6895,
    "longitude": 139.6917,
    "country": "Japan",
    "timezone": "Asia/Tokyo"
  },
  "time": "2026-01-12T18:45:00+09:00",
  "temperature": 4.7,
  "apparent": 1.8,
  "humidity": 66,
  "wind_speed": 3.6,
  "wind_direction": 135,
  "condition": "Clear sky",
  "weather_code": 0,
  "precipitation": 0,
  "cloud_cover": 0,
  "pressure": 1015.2,
  "uv_index": 0
}

Forecast:

{
  "location": { ... },
  "daily": [
    {
      "date": "2026-01-12",
      "temp_max": 12.1,
      "temp_min": 4.3,
      "condition": "Slight rain",
      "precip_prob": 75,
      "precipitation": 1.5,
      "sunrise": "2026-01-12T08:04:00+09:00",
      "sunset": "2026-01-12T16:45:00+09:00",
      "wind_speed_max": 15.3,
      "wind_direction": 202,
      "uv_index_max": 2.4
    }
  ]
}

Usage Guidelines

When to Use

User asks for weather, temperature, forecast, or conditions
Planning activities and need weather data
Checking if it will rain, snow, or be sunny
Getting climate information for travel planning
Need sunrise/sunset times
Comparing weather across locations

Location Handling

If user provides clear location, use it directly
If ambiguous (e.g., "Portland"), ask for clarification or add context
If location not found, suggest checking spelling or adding country
For coordinates, use search command first to validate

Parsing Output

Always use --json for programmatic parsing
Extract temperature, condition, wind_speed for quick summaries
Check precip_prob for rain likelihood
Use sunrise/sunset for daylight planning
weather_code follows WMO standard (0-99)

Best Practices

Request 3-5 days for travel planning (not full 16)
Use hourly forecast for detailed day planning
Check apparent temperature for "feels like" comfort
UV index >3 = recommend sun protection
Wind speed >20 km/h = mention it's windy

Examples

Quick weather check:

weathercli current "London" --json | jq '.temperature, .condition'

Week forecast for trip:

weathercli forecast "Barcelona" --days 5 --json

Detailed today's hourly:

weathercli forecast "Seattle" --hourly --hours 24

Check multiple cities:

for city in "Tokyo" "London" "New York"; do
  weathercli current "$city" --json | jq -r '"\(.location.name): \(.temperature)°C, \(.condition)"'
done

Find exact location:

weathercli search "Springfield" --json

Notes

No API key required - Uses free Open-Meteo API
Worldwide coverage - Works for any location globally
Temperatures in Celsius - Convert if needed (°F = °C × 9/5 + 32)
Wind speed in km/h - Convert to mph if needed (×0.621)
Local timezone - All times automatically converted
Rate limits - Reasonable for personal/agent use; avoid hammering
Accuracy - Data from multiple meteorological sources
Updates - Current weather updates every 15 minutes
Offline - Requires internet connection

Error Handling

Location not found:

Error: location not found: Atlantis

→ Check spelling, try adding country/region

Network error:

Error: weather API error: network timeout

→ Retry after brief delay

Invalid input:

Error: invalid days value

→ Check --days is between 1-16

Installation

If weathercli is not available:

# Via Go
go install github.com/pjtf93/weathercli/cmd/weathercli@latest

# Or download binary from releases
# https://github.com/pjtf93/weathercli/releases