Caledonia, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Caledonia, a village in Washington County, Missouri.
Tonight
70°F
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 70. South wind around 2 mph. Chance of precipitation is 20%.
7-day forecast for Caledonia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph S | 16% |
| Saturday | 97°F | Mostly Sunny | 2 to 6 mph SW | 3% |
| Saturday Night | 71°F | Partly Cloudy | 3 mph SW | 0% |
| Sunday | 95°F | Mostly Sunny | 5 mph W | 9% |
| Sunday Night | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 3 mph N | 48% |
| Monday | 84°F | Showers And Thunderstorms Likely | 1 to 6 mph N | 65% |
| Monday Night | 59°F | Showers And Thunderstorms Likely | 2 to 6 mph N | 65% |
| Tuesday | 74°F | Slight Chance Rain Showers then Partly Sunny | 7 mph N | 18% |
| Tuesday Night | 53°F | Partly Cloudy | 2 to 7 mph N | 8% |
| Wednesday | 74°F | Mostly Sunny | 2 to 6 mph N | 3% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Thursday | 76°F | Mostly Sunny | 0 to 5 mph N | 3% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 3 mph N | 4% |
| Friday | 76°F | Mostly Sunny | 0 to 6 mph N | 9% |
Forecast source: National Weather Service (api.weather.gov) for Caledonia (37.765, -90.772). Updated through the day.
Growing snapshot for Caledonia
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
6b
More local growing data for Caledonia: nearby ZIP 63631 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Potosi 4 Sw, Mo (10.2 mi from Caledonia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.