Old Monroe, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Old Monroe, a city in Lincoln County, Missouri.
Overnight
52°F
Slight Chance Drizzle
A slight chance of drizzle before 5am. Mostly cloudy, with a low around 52. Southwest wind around 10 mph, with gusts as high as 23 mph.
7-day forecast for Old Monroe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Slight Chance Drizzle | 10 mph SW | 13% |
| Wednesday | 61°F | Mostly Cloudy | 9 to 16 mph W | 8% |
| Wednesday Night | 42°F | Partly Cloudy | 7 mph W | 1% |
| Thursday | 63°F | Sunny | 6 to 12 mph W | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 6 mph NW | 4% |
| Friday | 56°F | Partly Sunny | 7 to 10 mph N | 3% |
| Friday Night | 33°F | Partly Cloudy | 1 to 6 mph N | 0% |
| Saturday | 55°F | Mostly Sunny | 3 mph N | 0% |
| Saturday Night | 33°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 61°F | Sunny | 1 to 6 mph W | 1% |
| Sunday Night | 34°F | Clear | 1 mph W | 0% |
| Monday | 66°F | Sunny | 1 to 6 mph SW | 0% |
| Monday Night | 40°F | Clear | 3 mph SW | 0% |
| Tuesday | 69°F | Sunny | 3 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Old Monroe (38.934, -90.749). Updated through the day.
Growing snapshot for Old Monroe
Last spring frost
Apr 20
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6b
More local growing data for Old Monroe: nearby ZIP 63369 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Cave
Chain of Rocks
Elsberry
Foley
Fountain N' Lakes
Hawk Point
Moscow Mills
Silex
Troy
Whiteside
Winfield
Climate data from the nearest NOAA station, Elsberry 1 S, Mo (15 mi from Old Monroe). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.