Mercer, MO Weather & Growing Conditions
Overnight
48°F
Patchy Drizzle
Patchy drizzle. Cloudy, with a low around 48. West wind around 13 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Patchy Drizzle | 13 mph W | 12% |
| Wednesday | 53°F | Patchy Drizzle then Mostly Cloudy | 12 to 16 mph W | 12% |
| Wednesday Night | 43°F | Mostly Cloudy | 9 mph W | 2% |
| Thursday | 53°F | Mostly Cloudy | 7 to 10 mph WNW | 14% |
| Thursday Night | 42°F | Mostly Cloudy | 7 mph NNW | 9% |
| Friday | 50°F | Partly Sunny | 3 to 8 mph N | 5% |
| Friday Night | 32°F | Partly Cloudy | 2 mph NE | 2% |
| Saturday | 52°F | Mostly Sunny | 3 mph SSW | 0% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 0% |
| Sunday | 59°F | Sunny | 5 mph W | 0% |
| Sunday Night | 37°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 64°F | Sunny | 3 to 9 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mercer, MO
Last spring frost
Apr 25
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
5b
Explore more for Mercer, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Princeton, Mo (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.