Susitna, AK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Susitna, a community in Matanuska-Susitna Borough County, Alaska.
Tonight
43°F
Rain Showers Likely then Light Rain Likely
Rain showers likely before 1am, then rain likely. Cloudy, with a low around 43. Southwest wind 5 to 10 mph. Chance of precipitation is 70%.
7-day forecast for Susitna
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Rain Showers Likely then Light Rain Likely | 5 to 10 mph SW | 69% |
| Saturday | 53°F | Light Rain Likely then Rain Showers Likely | 5 to 10 mph E | 70% |
| Saturday Night | 42°F | Rain Showers Likely then Slight Chance Light Rain | 5 to 15 mph NW | 70% |
| Sunday | 56°F | Slight Chance Light Rain then Cloudy | 5 to 15 mph NW | 15% |
| Sunday Night | 38°F | Rain Showers | 0 to 5 mph NW | 77% |
| Monday | 52°F | Rain Showers | 0 to 5 mph N | 84% |
| Monday Night | 36°F | Rain Showers Likely | 0 to 5 mph SW | 64% |
| Tuesday | 54°F | Partly Sunny | 5 mph NW | 12% |
| Tuesday Night | 34°F | Partly Cloudy | 5 mph NW | 10% |
| Wednesday | 54°F | Mostly Sunny | 0 to 5 mph W | 13% |
| Wednesday Night | 35°F | Mostly Cloudy then Slight Chance Rain Showers | 0 mph | 15% |
| Thursday | 54°F | Slight Chance Rain Showers | 0 to 5 mph SE | 24% |
| Thursday Night | 37°F | Chance Rain Showers | 0 to 5 mph E | 44% |
| Friday | 54°F | Chance Rain Showers | 0 to 5 mph N | 44% |
Forecast source: National Weather Service (api.weather.gov) for Susitna (61.540, -150.588). Updated through the day.
Growing snapshot for Susitna
Last spring frost
May 29
First fall frost
Sep 7
Growing season
100 days
More local growing data for Susitna: nearby ZIP 99652 weather · frost dates · planting calendar · Alaska frost dates
Nearby towns & communities
Big Lake
Buffalo Soapstone
Butte
Chase
Chickaloon
Farm Loop
Fishhook
Gateway
Glacier View
Houston
Knik-Fairview
Lazy Mountain
Meadow Lakes
North Lakes
Palmer
Petersville
Point MacKenzie
South Lakes
Susitna North
Sutton-Alpine
Talkeetna
Tanaina
Trapper Creek
Wasilla
Willow
Climate data from the nearest NOAA station, Whites Crossing, Ak (13.2 mi from Susitna). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.