Formoso, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Formoso, a city in Jewell County, Kansas.
Tonight
70°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Formoso
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 15 mph SSW | 23% |
| Saturday | 84°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph NW | 20% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 10 mph NNE | 32% |
| Sunday | 70°F | Chance Showers And Thunderstorms | 10 mph NNE | 41% |
| Sunday Night | 61°F | Chance Rain Showers | 5 to 10 mph NNE | 40% |
| Monday | 68°F | Partly Sunny | 5 to 10 mph N | 13% |
| Monday Night | 54°F | Partly Cloudy | 5 to 10 mph NE | 9% |
| Tuesday | 67°F | Partly Sunny | 5 mph ENE | 3% |
| Tuesday Night | 54°F | Partly Cloudy | 5 to 10 mph ESE | 3% |
| Wednesday | 69°F | Partly Sunny | 5 to 10 mph SE | 13% |
| Wednesday Night | 59°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph SE | 38% |
| Thursday | 70°F | Chance Showers And Thunderstorms | 5 mph SSE | 38% |
| Thursday Night | 60°F | Chance Rain Showers | 5 mph SE | 31% |
| Friday | 71°F | Chance Rain Showers | 5 to 10 mph SE | 31% |
Forecast source: National Weather Service (api.weather.gov) for Formoso (39.778, -97.993). Updated through the day.
Growing snapshot for Formoso
Last spring frost
Apr 17
First fall frost
Oct 21
Growing season
187 days
Hardiness zone
6a
More local growing data for Formoso: nearby ZIP 66942 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Courtland, Ks (5.5 mi from Formoso). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.