White Salmon, WA 98619 Frost Dates
White Salmon, WA: when does the frost end?
The NOAA station nearest to 98619 does not report a usable frost-date normal for either event, so no last-frost or first-frost figure is shown here. The USDA hardiness zone below is still real: Zone 7a (0 to 5°F average annual minimum).
White Salmon against the rest of the dataset
About 72 days separate White Salmon's last and first frost, putting it 40,105 of 40,283 ZIP codes nationally. Within WA, it ranks 699 of 700.
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Before leaning on 98619's figures: zone vs. frost date explains why Zone 7a and White Salmon's frost date answer different questions, while local microclimates explains what one yard in White Salmon can differ from the 98619 normal.