Denison, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Denison, a city in Jackson County, Kansas.
Overnight
44°F
Cloudy
Cloudy, with a low around 44. Northwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Denison
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Cloudy | 10 mph NW | 1% |
| Wednesday | 56°F | Mostly Cloudy | 5 to 10 mph W | 0% |
| Wednesday Night | 39°F | Mostly Clear | 5 mph W | 1% |
| Thursday | 55°F | Mostly Sunny | 5 to 10 mph NW | 1% |
| Thursday Night | 40°F | Partly Cloudy | 5 mph N | 0% |
| Friday | 54°F | Partly Sunny | 0 to 5 mph N | 4% |
| Friday Night | 34°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 57°F | Mostly Sunny | 0 mph | 0% |
| Saturday Night | 36°F | Mostly Clear | 0 mph | 0% |
| Sunday | 63°F | Sunny | 0 to 5 mph W | 0% |
| Sunday Night | 39°F | Clear | 0 mph | 0% |
| Monday | 68°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 0 to 5 mph W | 0% |
| Tuesday | 68°F | Sunny | 0 to 5 mph NE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Denison (39.394, -95.628). Updated through the day.
Growing snapshot for Denison
Last spring frost
Apr 10
First fall frost
Oct 29
Growing season
199 days
Hardiness zone
6a
More local growing data for Denison: nearby ZIP 66419 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Valley Falls 3 Sw, Ks (7.2 mi from Denison). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.