Meteorological fall is here: What that really means
Meteorologists define fall starting September 1 using fixed calendar months to standardize climate data, differing from the astronomical equinox on September 22.
- Meteorologists marked Monday as the start of meteorological fall, signaling Toledoans have stepped into the new season on the weather calendar.
- Meteorologists define seasons by calendar months, dividing the year into three-month blocks aligned with the Gregorian calendar to ease record-keeping and climate comparisons.
- Each meteorological season runs about 89 to 93 days, with average high temperatures in September dropping from the low 80s to the low 70s by month's end.
- In Toledo, September marks a clear weather shift as fog and cooler readings in the 50s or 40s appear, with a cold front bringing cooler highs and lower humidity Sunday and Monday.
- The Climate Prediction Center's fall outlook projects above-average temperatures for South Florida now through the end of November, while fixed three-month seasons align 91-day periods better with climatological summer and winter.
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10 Articles
Seasonably warm temperatures ahead for Mass. as meteorological fall begins
With Sept. 1 marking the first day of meteorological fall, the shift to cooler temperatures and shorter days has officially begun in Massachusetts.On just the second day of the season, a classic sign of fall emerged when a layer of fog settled in on Tuesday morning. The fog, coupled with temperatures in the 50s or even 40s in some areas, is a “sign of the times now that the calendar has moved to September,” forecasters wrote.
Welcome to Meteorological Fall
While astronomical Fall (what our calendars say) doesn't happen until September 22nd this year, Meteorological Fall begins today, September 1st.Meteorological seasons begin at the beginning of the month in three month increments: Fall is September-November; Winter is December-February; Spring March-May and Summer is June-August.These seasons are defined by the annual temperature cycle, rather than Earth's position relative to the sun, in order t…

Welcome to meteorological fall
Weather record-keeping and astronomical seasons don't work well together.
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