Daily brief · Brazil

São Paulo 2026-09-20

Verified against recorded weather

Weather-risk signals · signal engine (Open-Meteo)

A heavy rain day could hit

high

A single day could bring around 11mm of rain on 2026-09-23 — above the local heavy-rain reference for this time of year (around 7.6mm in a day). Construction, drainage, and outdoor events should review schedules.

outdoor events · drainage operators · agriculture

A dry stretch is forming

medium

6 dry days in a row could start 2026-09-25. A dry day here means 1mm of rain or less; the important number is the length of the run. Crops in flowering or fruit-set windows are most exposed.

agriculture

Water conditions are improving

strong

Around 171.6mm of rain has fallen over the past 14 days — above the 0.6mm typical for this period. A healthier water balance is restoring across this area.

hydro operators · agriculture · reservoir ops

Rainfall is trending above the usual

extreme

Around 19.1mm of rain may fall in the next 48 hours — above the 0mm typical for this period. Field access, drying, and outdoor logistics may be affected.

farmers · tourism · logistics

What the day recorded · Open-Meteo daily archive

Rain 12.5 mmMax 23.4 °CMin 17.5 °CGusts 35.6 km/h

Directional single-day check: recorded daily values compared against the historical baseline each signal was measured from. Signals cover multi-day windows, so this is context, not a forecast grade.

What people were seeing · community field reports

No field observations were posted for this place on 2026-09-20.