Eureka, MO Weather & Growing Conditions
Overnight
74°F
Mostly Clear
Mostly clear, with a low around 74. South wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 74°F | Mostly Clear | 2 mph S | 2% |
| Saturday | 97°F | Mostly Sunny | 2 to 6 mph SW | 5% |
| Saturday Night | 72°F | Partly Cloudy | 2 mph S | 5% |
| Sunday | 92°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 mph W | 34% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 3 mph NE | 69% |
| Monday | 78°F | Showers And Thunderstorms Likely | 2 to 6 mph NE | 69% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 2 to 6 mph N | 54% |
| Tuesday | 70°F | Slight Chance Rain Showers then Partly Sunny | 7 mph N | 22% |
| Tuesday Night | 53°F | Mostly Cloudy | 2 to 7 mph N | 3% |
| Wednesday | 73°F | Mostly Sunny | 6 mph N | 1% |
| Wednesday Night | 54°F | Partly Cloudy | 3 mph N | 0% |
| Thursday | 76°F | Mostly Sunny | 1 to 5 mph N | 1% |
| Thursday Night | 56°F | Mostly Cloudy | 0 to 3 mph NE | 4% |
| Friday | 76°F | Partly Sunny | 0 to 5 mph NE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Eureka, MO
Last spring frost
Apr 12
First fall frost
Oct 23
Growing season
193 days
Hardiness zone
6b
Explore more for Eureka, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, St Louis Sprt Of S L Ap, Mo (11.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.