Haddam, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Haddam, a city in Washington County, Kansas.
Today
81°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly sunny, with a high near 81. East wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast for Haddam
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 22% |
| Tonight | 62°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 38% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 10 mph NE | 51% |
| Wednesday Night | 59°F | Partly Cloudy | 0 to 10 mph NE | 6% |
| Thursday | 81°F | Mostly Sunny | 0 to 5 mph E | 3% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 36% |
| Friday | 87°F | Chance Showers And Thunderstorms then Sunny | 0 to 5 mph S | 26% |
| Friday Night | 68°F | Mostly Clear | 5 mph S | 3% |
| Saturday | 91°F | Sunny | 5 to 15 mph S | 2% |
| Saturday Night | 72°F | Mostly Clear | 10 to 15 mph S | 2% |
| Sunday | 93°F | Sunny | 10 to 15 mph S | 2% |
| Sunday Night | 73°F | Mostly Clear | 15 mph S | 3% |
| Monday | 94°F | Mostly Sunny | 15 mph S | 2% |
| Monday Night | 73°F | Mostly Clear | 15 mph S | 7% |
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 Aug 4, 2026.