Merriam, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merriam, a city in Johnson County, Kansas.
Today
94°F
Mostly Sunny
Mostly sunny, with a high near 94. Heat index values as high as 97. South wind around 6 mph.
7-day forecast for Merriam
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Mostly Sunny | 6 mph S | 6% |
| Tonight | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 6 mph SSE | 21% |
| Wednesday | 88°F | Chance Showers And Thunderstorms | 8 mph ESE | 44% |
| Wednesday Night | 68°F | Showers And Thunderstorms Likely | 5 to 8 mph NNE | 76% |
| Thursday | 86°F | Showers And Thunderstorms then Partly Sunny | 5 mph NE | 76% |
| Thursday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 mph ESE | 28% |
| Friday | 89°F | Chance Showers And Thunderstorms then Mostly Sunny | 6 mph S | 28% |
| Friday Night | 72°F | Mostly Clear | 6 mph S | 13% |
| Saturday | 92°F | Sunny | 6 to 10 mph S | 13% |
| Saturday Night | 75°F | Mostly Clear | 12 mph S | 2% |
| Sunday | 94°F | Sunny | 13 mph SSW | 1% |
| Sunday Night | 77°F | Mostly Clear | 13 mph S | 2% |
| Monday | 95°F | Sunny | 14 mph SSW | 2% |
| Monday Night | 77°F | Mostly Clear | 14 mph SSW | 3% |
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 Aug 4, 2026.