Tyonek, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tyonek, a community in Kenai Peninsula Borough County, Alaska.
Overnight
52°F
Heavy Rain
Rain. Cloudy, with a low around 52. Southeast wind around 10 mph. Chance of precipitation is 100%.
7-day forecast for Tyonek
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Heavy Rain | 10 mph SE | 100% |
| Tuesday | 57°F | Heavy Rain | 5 to 10 mph SE | 100% |
| Tuesday Night | 53°F | Light Rain | 0 to 5 mph SE | 75% |
| Wednesday | 60°F | Light Rain Likely | 0 mph | 72% |
| Wednesday Night | 50°F | Light Rain Likely | 0 mph | 56% |
| Thursday | 64°F | Light Rain Likely | 0 to 5 mph SE | 56% |
| Thursday Night | 50°F | Slight Chance Light Rain | 5 mph SW | 23% |
| Friday | 66°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph S | 23% |
| Friday Night | 51°F | Mostly Cloudy | 0 to 5 mph SW | 12% |
| Saturday | 71°F | Partly Sunny | 0 to 5 mph SW | 12% |
| Saturday Night | 51°F | Mostly Cloudy | 0 to 5 mph SW | 9% |
| Sunday | 71°F | Mostly Cloudy | 0 mph | 14% |
| Sunday Night | 52°F | Mostly Cloudy | 0 mph | 14% |
| Monday | 71°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph S | 21% |
Forecast source: National Weather Service (api.weather.gov) for Tyonek (61.099, -151.339). Updated through the day.
Growing snapshot for Tyonek
Last spring frost
May 18
First fall frost
Sep 22
Growing season
125 days
More local growing data for Tyonek: nearby ZIP 99682 weather · frost dates · planting calendar · Alaska frost dates
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Climate data from the nearest NOAA station, Kenai 9N, Ak (36.3 mi from Tyonek). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.