Frost Alert: Garden Freeze

Know before the cold hits. Frost Alert reads tonight's low, dew point, wind and clouds into a plain risk level, with an evening reminder to cover your plants.

Will it frost tonight? Frost Alert turns the overnight low, dew point, wind and cloud cover into a simple risk read for gardeners, so you can cover tender plants before the cold settles in.

▶ Tonight's frost risk — a clear low-to-high level built from the overnight low plus the radiative-frost signals of clear skies, calm wind and a low dew point.

▶ Cover-your-plants reminder — an optional evening heads-up on risky nights, so you bring in pots or throw a sheet over the beds in time.

▶ First & last frost dates — 30 years of local weather history distilled into your area's typical last-spring and first-fall frost dates, plus your own frost log that builds year over year.

▶ Plant guide with sowing dates — which plants shrug off a light frost and which need protection, with sow and plant-out dates worked back from your local frost dates.

▶ Made for your patch — set your location for local readings and pick the temperature units you actually think in.

Forecasts come from an open weather model for your location and are an estimate; microclimates, slopes and frost pockets vary, so treat the risk level as a heads-up, not a guarantee.