Freezing-temperature frequency, duration, and seasonality
How often, for how long, and when does temperature fall below stated freeze thresholds?
The data that answers it
Ranked by fit · best firstOpen station-day minimum temperature with station/date/quality supports thresholded freeze frequency and seasonality; daily data only bound subdaily duration.
Hourly and synoptic station temperatures carry station, UTC timestamp, coordinates, value, and quality code, supporting threshold frequency, duration, and seasonality for a pinned station set and window.
Station-year files provide hourly temperature and daily minimum temperature with station, coordinates, and ISO date-time, directly supporting pinned freeze frequency, duration, and seasonality.
Station-day minimum temperature and provenance support thresholded freeze-day frequency and seasonality. Daily summaries bound rather than measure subdaily freeze duration.
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