Old Monroe, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Old Monroe, a city in Lincoln County, Missouri.
Today
89°F
Sunny
Sunny, with a high near 89. South wind around 3 mph.
7-day forecast for Old Monroe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 3 mph S | 0% |
| Tonight | 69°F | Mostly Clear | 3 mph SE | 1% |
| Wednesday | 90°F | Mostly Sunny then Scattered Showers And Thunderstorms | 5 mph S | 25% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms | 5 mph S | 75% |
| Thursday | 86°F | Showers And Thunderstorms | 3 mph S | 75% |
| Thursday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 2 mph SE | 15% |
| Friday | 87°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 2 mph SW | 15% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 2 mph S | 30% |
| Saturday | 90°F | Chance Showers And Thunderstorms then Mostly Sunny | 3 mph SW | 30% |
| Saturday Night | 72°F | Mostly Clear | 5 mph S | 6% |
| Sunday | 92°F | Sunny | 7 mph S | 3% |
| Sunday Night | 74°F | Mostly Clear | 6 mph S | 5% |
| Monday | 93°F | Sunny | 5 to 8 mph SW | 4% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 16% |
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 Aug 4, 2026.