Eureka, MO Weather & Growing Conditions
Overnight
66°F
Clear
Clear, with a low around 66. Northeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Clear | 2 mph NE | 0% |
| Tuesday | 89°F | Patchy Fog then Sunny | 2 mph SE | 0% |
| Tuesday Night | 68°F | Mostly Clear | 2 mph SE | 0% |
| Wednesday | 90°F | Sunny | 3 mph S | 10% |
| Wednesday Night | 71°F | Slight Chance Showers And Thunderstorms | 3 mph S | 65% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 3 mph S | 67% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 2 mph W | 36% |
| Friday | 87°F | Chance Showers And Thunderstorms | 2 mph W | 36% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph S | 29% |
| Saturday | 89°F | Chance Showers And Thunderstorms then Mostly Sunny | 3 mph SW | 29% |
| Saturday Night | 71°F | Mostly Clear | 3 mph S | 7% |
| Sunday | 92°F | Sunny | 5 mph SW | 5% |
| Sunday Night | 73°F | Mostly Clear | 3 mph S | 5% |
| Monday | 93°F | Sunny | 6 mph SW | 5% |
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 Aug 4, 2026.