☂ Umbrella
Rain in the next 12 hours
A 55% or higher peak hourly rain chance—or current rain, showers, or thunderstorms—prompts “Bring an umbrella.” From 30% through 54%, the brief suggests that a compact umbrella may be worthwhile.
No mystery weather math
How the brief decides what to bring
Smallweather applies a short, consistent set of rules to the forecast. The goal is a useful first answer—not a guarantee or a replacement for official alerts.
Check a cityThe decision rules
Four signals, one practical summary
These thresholds are intentionally simple and visible so you can decide whether the advice fits you.
◷ Rain timing
The most useful wet window
Smallweather scans the next 24 forecast hours for consecutive hours at or above a 40% rain chance. It shows the longest upcoming window and its peak probability, in the location's local time.
◇ Layers
What it feels like outside
Guidance follows the apparent temperature: bundle up at 35°F or below, take a warm layer through 52°F, and consider a light layer through 66°F. At 80°F and above, the advice shifts toward dressing light; at 90°F and above, it also suggests carrying water.
↝ Changes and wind
Conditions that alter the answer
A daily high-to-low swing of at least 18°F can trigger a layers reminder in mild weather. A forecast daily gust of 35 mph or more adds a strong-gust warning to the practical summary.
What the brief does not do
A forecast, not a safety system
Thresholds cannot capture personal comfort, microclimates, severe-weather risk, or every kind of precipitation. Check official local alerts before travel or high-risk activities.
Smallweather displays the provider's latest location-local forecast and lets you switch between imperial and metric units. Searches and coordinates are never included in its anonymous product events.
Less forecast. More answer.