Better timing.
Clearer context.

What it does

The planner compares consecutive four-hour windows using hourly temperature, rain probability, wind and daylight. It adjusts the balance for hiking, scenic drives, family days and photography, then shows the inputs behind its recommendation.

Where the data comes from

Weather forecasts and active weather alerts come from the U.S. National Weather Service. Park notices come from the National Park Service. Sunrise and sunset data comes from Sunrise-Sunset.org. Each result links back to official sources.

The month-by-month pages

Alongside the planner, ParkReady publishes a record for each park: ten years of daily reanalysis and the National Park Service's own monthly visit counts, folded into one row per month: temperature, precipitation, snow, daylight and crowds together.

Those pages describe what a month has usually been like, which is a different claim from what your date will be like, and they never name a best month. The temperatures come from a reanalysis grid cell at a single elevation, so in a park that spans thousands of feet they describe a point rather than the whole park; each page says so and prints the elevation.

What it cannot tell you

ParkReady does not know your experience, equipment, route, health or the conditions on a particular trail. It is not a safety service and its score is not a declaration that an activity is safe. Recheck official conditions and follow ranger guidance before leaving.

Why klepZ built it

klepZ makes focused public-data tools that turn scattered information into useful decisions. ParkReady is an independent project and is not affiliated with the National Park Service or National Weather Service.