Haddam, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Haddam, a city in Washington County, Kansas.
This Afternoon
56°F
Rain Showers Likely
Rain showers likely. Cloudy, with a high near 56. Northwest wind around 20 mph, with gusts as high as 40 mph. Chance of precipitation is 60%.
7-day forecast for Haddam
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Rain Showers Likely | 20 mph NW | 61% |
| Tonight | 40°F | Mostly Cloudy | 10 to 15 mph NW | 10% |
| Wednesday | 54°F | Mostly Sunny | 5 to 15 mph W | 0% |
| Wednesday Night | 37°F | Mostly Clear | 5 mph W | 8% |
| Thursday | 53°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NW | 15% |
| Thursday Night | 35°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Friday | 54°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Friday Night | 35°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 61°F | Mostly Sunny | 0 to 5 mph W | 3% |
| Saturday Night | 37°F | Mostly Clear | 0 to 5 mph W | 5% |
| Sunday | 65°F | Sunny | 5 mph W | 1% |
| Sunday Night | 41°F | Clear | 5 mph SW | 0% |
| Monday | 67°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Haddam (39.855, -97.304). Updated through the day.
Growing snapshot for Haddam
Last spring frost
Apr 24
First fall frost
Oct 14
Growing season
171 days
Hardiness zone
6a
More local growing data for Haddam: nearby ZIP 66944 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Washington, Ks (12.8 mi from Haddam). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.