Old Monroe, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Old Monroe, a city in Lincoln County, Missouri.
Tonight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. Southwest wind around 3 mph.
7-day forecast for Old Monroe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Partly Cloudy | 3 mph SW | 1% |
| Sunday | 90°F | Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 5 mph W | 37% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 8 mph N | 78% |
| Monday | 76°F | Showers And Thunderstorms | 5 to 8 mph NE | 78% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 5 to 8 mph NE | 47% |
| Tuesday | 70°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph N | 19% |
| Tuesday Night | 53°F | Mostly Cloudy | 3 to 9 mph N | 1% |
| Wednesday | 72°F | Mostly Sunny | 7 mph N | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 1 to 6 mph N | 0% |
| Thursday | 75°F | Mostly Sunny | 1 to 5 mph NE | 0% |
| Thursday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph NE | 15% |
| Friday | 78°F | Slight Chance Rain Showers | 1 to 5 mph NE | 19% |
| Friday Night | 58°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph NE | 19% |
| Saturday | 81°F | Mostly Sunny | 3 mph NE | 6% |
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 Sep 20, 2026.