Microseason 43 of 72 · August 1–5
Night falls a minute earlier
A five-day window of the year, read through nine North American climate regions.
Same week, nine climates
A microseason names a five-day window of the solar year. What that window actually looks like on the ground depends on where you are. Below, the same calendar window read through each of nine North American climate regions.
- NENortheast Continental
Night falls a minute earlier
Sunset retreats perceptibly — daylight shortening speeds up.
- SESoutheast Subtropical
Dusk arrives one minute earlier each night
Sunset slides back toward 8 PM; darkness creeps in, signaling summer's decline though heat persists.
- PNWPacific Northwest
August Arrives Dimmed
Smoke persists. Nights fall noticeably earlier—sunset shifts 3 minutes earlier than June's solstice. Resinous fir and cedar scent hangs thick.
- CACalifornia Mediterranean
August begins in scorching stillness
Calm days dominate early August; temperatures peak; the entire ecosystem is in survival mode.
- MWMountain West
Summer heat breaks with monsoon
Late summer monsoon surge; southern reaches drench under Gulf moisture; northern peaks cool rapidly as monsoon remnants push north.
- MPPlains Continental
Great rains sometimes fall
Monsoon-like moisture pulses bring heavy downpours; flooding becomes a threat as prairie soils approach saturation from repeated storms.
- SWSouthwest Desert
The monsoon exhales
Afternoon storms lose intensity and frequency. Days remain brutally hot but humidity begins its slow descent. Arroyos still flow but more intermittently.
- TRTropical / Sub-Tropical
August opens — storms become routine
Great rains fall without warning. Flash floods recede in hours. Mangrove prop roots strain. Corals bleach if water temp exceeds 30.5°C. Named storm threat real.
- AKAlaska Subarctic
Late summer storms sweep south
Pacific cyclones intensify; coastal regions see heavy rain and wind as summer begins to yield to autumn systems.
About the 72-microseason calendar
A microseason is a five-day window of the solar year — long enough to notice something change, short enough that the change is specific. The year holds seventy-two of them, six per month, ordered by what the natural world is doing rather than what the clock says. Almanac calendars like this are an old American habit, kept by farmers, gardeners, and birders for centuries; Weather Story collects them into a single reference.
Each microseason is read through nine North American climate regions. The phenological events that mark a five-day window vary with ecology — the strawberries that open in the Northeast might coincide with the first magnolias dropping in the Southeast and the salmonberry blossoms unfurling in the Pacific Northwest. Same week, nine ecologies, nine readings.