Daily brief · Iceland

Reykjavík 2026-09-21

Verified against recorded weather

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

A heavy rain day could hit

medium

A single day could bring around 16.7mm of rain on 2026-09-24 — close to the local heavy-rain reference for this time of year (around 20.9mm in a day). Construction, drainage, and outdoor events should review schedules.

construction · outdoor events · drainage operators · agriculture · fishing

Frost is possible this week

active

Lows could dip to about 1.1°C on 2026-10-01 — under the 2°C frost line that damages buds and tender leaves. Orchards, gardens, and tender crops may face damage.

A cold stretch is on the way

extreme

14 days in a row could stay below 15°C, starting 2026-09-21. Longer than this region usually sees at this time of year. Crops in flowering, livestock, and rooftop venues may be exposed.

crop growers · outdoor hospitality

Rainfall is trending above the usual

low

Around 9.1mm of rain may fall in the next 48 hours — above the 4.2mm typical for this period. Field access, drying, and outdoor logistics may be affected.

farmers · tourism · logistics · fishing · construction

What the day recorded · Open-Meteo daily archive

Rain 7 mmMax 12.3 °CMin 7.3 °CGusts 81.7 km/h
Rainfall is trending above the usual: recorded 7 mm vs a local baseline of 4.2 mm — above the local baseline

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 2026-09-21.