Seasons and sky
Meteorological Season
Direct answer
Meteorological Season: A Meteorological Season groups three whole calendar months according to the annual temperature cycle to support consistent climate statistics.
A Meteorological Season is a three-month climatological grouping.
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At a glance
- Found in
- Seasons & Earth Almanac
- Related
- Astronomical Season, Equinox, Solstice, Sunrise
A Meteorological Season is a three-month climatological grouping.
A Sun-Earth orientation for seasonal, atmospheric, tidal, and terrestrial terms.
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The story behind Meteorological Season
Meteorologists and climatologists adopted fixed seasonal groupings to make monthly and seasonal records easier to calculate and compare.
Why Meteorological Season matters
Fixed month groups are easier to compare across years than astronomical seasons whose exact times and lengths vary.
How to read Meteorological Season
Meteorological Season speaks to climate summaries and make clear which hemisphere and month convention is being applied.
Meteorological Season in practice: an example
In the Northern Hemisphere convention, meteorological spring is March through May.
Where readings of Meteorological Season go wrong
The usual misreading is to confuse meteorological seasons with equinox-to-solstice astronomical seasons or with local ecological seasons.
Sources and editorial method
Research references used for this entry include:
- NOAA NCEI: Meteorological Versus Astronomical Seasons - Official comparison of seasons defined by Earth-Sun geometry and by climatological month groups.
- Source
- The Great Almanac Dictionary
- Category
- Seasons & Earth Almanac
- Last updated
- 2026-09-26
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Common questions
What is a Meteorological Season?
A Meteorological Season groups three whole calendar months according to the annual temperature cycle to support consistent climate statistics.
What do people get wrong about a Meteorological Season?
The usual misreading is to confuse meteorological seasons with equinox-to-solstice astronomical seasons or with local ecological seasons.
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