Knappa, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knappa, a community in Clatsop County, Oregon.
This Afternoon
61°F
Partly Sunny
Partly sunny. High near 61, with temperatures falling to around 56 in the afternoon. Northwest wind around 2 mph.
7-day forecast for Knappa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Partly Sunny | 2 mph NW | 3% |
| Tonight | 41°F | Mostly Clear | 0 to 5 mph ESE | 4% |
| Wednesday | 58°F | Partly Sunny then Light Rain | 6 mph SE | 80% |
| Wednesday Night | 47°F | Light Rain | 3 to 9 mph SSW | 99% |
| Thursday | 58°F | Slight Chance Light Rain then Partly Sunny | 5 mph SSW | 16% |
| Thursday Night | 48°F | Light Rain | 2 to 8 mph SSE | 78% |
| Friday | 58°F | Light Rain | 3 to 10 mph SSE | 78% |
| Friday Night | 49°F | Chance Light Rain | 3 to 8 mph SE | 40% |
| Saturday | 61°F | Chance Light Rain | 6 to 9 mph SSE | 43% |
| Saturday Night | 50°F | Light Rain | 6 to 17 mph SSW | 80% |
| Sunday | 56°F | Light Rain Likely | 2 to 14 mph SW | 66% |
| Sunday Night | 45°F | Chance Light Rain | 2 to 6 mph SE | 25% |
| Monday | 57°F | Chance Light Rain | 7 mph SE | 50% |
| Monday Night | 49°F | Light Rain Likely | 5 to 16 mph SSE | 70% |
Forecast source: National Weather Service (api.weather.gov) for Knappa (46.171, -123.580). Updated through the day.
Growing snapshot for Knappa
Last spring frost
Mar 30
First fall frost
Nov 18
Growing season
233 days
Hardiness zone
8b
More local growing data for Knappa: nearby ZIP 97103 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ft Clatsop Natl Mem, Or (8.6 mi from Knappa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.