Merriam, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merriam, a city in Johnson County, Kansas.
Tonight
78°F
Partly Cloudy
Partly cloudy, with a low around 78. Heat index values as high as 99. South southwest wind 7 to 12 mph, with gusts as high as 20 mph.
7-day forecast for Merriam
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 78°F | Partly Cloudy | 7 to 12 mph SSW | 2% |
| Saturday | 96°F | Mostly Sunny | 12 mph SSW | 5% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 9 mph W | 63% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 7 mph NNW | 45% |
| Sunday Night | 64°F | Showers And Thunderstorms Likely | 8 mph NNE | 58% |
| Monday | 72°F | Chance Showers And Thunderstorms | 9 mph NNE | 54% |
| Monday Night | 57°F | Mostly Cloudy | 6 to 9 mph NNE | 8% |
| Tuesday | 68°F | Mostly Cloudy | 9 mph NNE | 6% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 to 8 mph NE | 3% |
| Wednesday | 72°F | Mostly Sunny | 6 mph ENE | 1% |
| Wednesday Night | 56°F | Partly Cloudy | 5 mph ENE | 6% |
| Thursday | 74°F | Slight Chance Rain Showers | 5 mph E | 20% |
| Thursday Night | 59°F | Slight Chance Rain Showers | 5 mph E | 17% |
| Friday | 74°F | Slight Chance Rain Showers | 6 mph E | 20% |
Forecast source: National Weather Service (api.weather.gov) for Merriam (39.018, -94.694). Updated through the day.
Growing snapshot for Merriam
Last spring frost
Apr 4
First fall frost
Nov 2
Growing season
211 days
Hardiness zone
6b
More local growing data for Merriam: nearby ZIP 66203 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Bonner Springs
De Soto
Edgerton
Fairway
Gardner
Lake Quivira
Leawood
Lenexa
Mission
Mission Hills
Olathe
Overland Park
Prairie Village
Roeland Park
Shawnee
Westwood
Climate data from the nearest NOAA station, Kansas City Downtown Ap, Mo (9.1 mi from Merriam). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.