Portis, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portis, a city in Smith County, Kansas.
This Afternoon
100°F
Sunny
Sunny. High near 100, with temperatures falling to around 97 in the afternoon. Heat index values as high as 100. South wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Portis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Sunny | 15 mph S | 2% |
| Tonight | 70°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 15 mph SSW | 27% |
| Saturday | 85°F | Partly Sunny | 5 to 10 mph N | 13% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 10 mph NNE | 38% |
| Sunday | 72°F | Chance Showers And Thunderstorms | 10 mph NNE | 42% |
| Sunday Night | 60°F | Slight Chance Rain Showers | 5 to 10 mph NNE | 20% |
| Monday | 71°F | Partly Sunny | 5 mph N | 14% |
| Monday Night | 55°F | Mostly Clear | 5 to 10 mph NE | 7% |
| Tuesday | 69°F | Partly Sunny | 5 mph E | 3% |
| Tuesday Night | 56°F | Partly Cloudy | 5 to 10 mph ESE | 8% |
| Wednesday | 72°F | Slight Chance Rain Showers | 10 mph SE | 16% |
| Wednesday Night | 61°F | Chance Rain Showers | 10 mph SE | 46% |
| Thursday | 72°F | Chance Rain Showers | 5 to 10 mph SSE | 46% |
| Thursday Night | 61°F | Chance Rain Showers | 5 mph SE | 34% |
Forecast source: National Weather Service (api.weather.gov) for Portis (39.564, -98.692). Updated through the day.
Growing snapshot for Portis
Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
173 days
Hardiness zone
6a
More local growing data for Portis: nearby ZIP 67474 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Smith Ctr, Ks (13.2 mi from Portis). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.