Monthly averages

[stevelacey]

Describe the feature

Monthly averages would be a great addition here, I want to be able to lookup forecasts from previous years to approximate a forecast for the future, e.g. look at March 2024 to estimate what the average temperature might be in March 2025.

...or better yet, let me look up March 2025 directly and do the legwork there too, average the last X years?

Examples

This is what I tried so far but obviously a particular day isn't going to represent a month, and I have to dance around making the date a datetime, and not in the future:

forecast = pirateweather.load_forecast(
    settings.PIRATE_WEATHER_API_KEY,
    instance.latitude,
    instance.longitude,
    time=datetime.combine(
        next(
            start_date
            for start_date in [
                instance.start_date,
                instance.start_date.replace(year=date.today().year),
                instance.start_date.replace(year=date.today().year - 1),
            ]
            if start_date <= date.today()
        ),
        time(12, 0, 0),
    ),
)
daily_forecast = forecast.daily()

This would be nice:

forecast = pirateweather.load_forecast(
    settings.PIRATE_WEATHER_API_KEY,
    instance.latitude,
    instance.longitude,
    time="2025-05"  # or "2024-05"
)
monthly_forecast = forecast.monthly()

Acknowledgements

• I have searched this repository and Home Assistant Repository to see if the feature has already been requested.
• I have written an informative title.