Helena Sep 3, 2026

A single day could bring around 8mm of rain on 2026-09-08 — above the local heavy-rain reference for this time of year (around 5.9mm in a day). Construction, drainage, and outdoor events should review schedules.

5 dry days in a row could start 2026-09-03. 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.

7 days in a row could stay below 15°C, starting 2026-09-03. Longer than this region usually sees at this time of year. Crops in flowering, livestock, and rooftop venues may be exposed.