get_metno_daily_forecast: Get Daily Weather Forecast Data from MET Weather API

In weatherOz: An API Client for Australian Weather and Climate Data Resources

Get Daily Weather Forecast Data from MET Weather API

Description

Retrieves daily aggregated weather forecast data from the Norwegian Meteorological Institute (MET.NO) locationforecast API. This is a convenience function that wraps get_metno_forecast and aggregates the hourly forecast data into daily summaries.

Usage

get_metno_daily_forecast(
  latitude,
  longitude,
  days = 9,
  api_key,
  timeout = 30,
  max_retries = 3,
  retry_delay = 1,
  use_cache = TRUE,
  cache_dir = NULL,
  allow_stale_on_error = TRUE
)

Arguments

latitude	Numeric. The latitude in decimal degrees for the forecast location. Must be within Australian limits (-44 to -10).
longitude	Numeric. The longitude in decimal degrees for the forecast location. Must be within Australian limits (112 to 154).
days	Numeric. The number of forecast days to return (1-9, default: 9).
api_key	Character. Your email address, required for the User-Agent header as per MET Weather API terms of service.
timeout	Numeric. Request timeout in seconds (default: 30).
max_retries	Numeric. Maximum number of retry attempts for failed requests (default: 3).
retry_delay	Numeric. Base delay between retries in seconds (default: 1.0).
use_cache	Logical. Use session-scoped cache and conditional revalidation for MET.NO responses. Defaults to TRUE.
cache_dir	Character. Optional directory path for cache files. If NULL (default), uses file.path(tempdir(), "metno_cache").
allow_stale_on_error	Logical. If TRUE (default), return stale cached data when MET.NO returns HTTP 429 (rate limit exceeded) and stale cache is available.

Details

The latitude and longitude are truncated to 4 decimal places as per MET Weather API Terms of Service. The daily aggregation includes minimum and maximum temperatures, total precipitation, average and maximum wind speeds, average relative humidity, average air pressure, average cloud fraction, and a dominant weather symbol for the day.

Value

A data.table with daily aggregated weather forecasts, including: date, min_temperature, max_temperature, total_precipitation, avg_wind_speed, max_wind_speed, avg_relative_humidity, avg_pressure, avg_cloud_fraction, and dominant_weather_symbol.

Author(s)

Rodrigo Pires, [e-mail]

See Also

Other METNO: get_metno_forecast(), metno_get_dominant_symbol(), metno_resample_data_table(), metno_timeseries_to_data_table()

Other data fetching: get_coastal_forecast(), get_data_drill(), get_data_drill_apsim(), get_dpird_apsim(), get_dpird_extremes(), get_dpird_minute(), get_dpird_summaries(), get_metno_forecast(), get_patched_point(), get_patched_point_apsim(), get_precis_forecast(), get_radar_imagery(), get_satellite_imagery()

Examples

## Not run: 
# Example of how to use the function (replace with your actual email)
# daily_forecast <- get_metno_daily_forecast(
#   latitude = -27.5,
#   longitude = 153.0,
#   days = 7,
#   api_key = "[e-mail]"
# )
# print(daily_forecast)

## End(Not run)

weatherOz documentation built on April 8, 2026, 9:09 a.m.