Imperial, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Imperial, a community in Jefferson County, Missouri.
This Afternoon
74°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 74, with temperatures falling to around 67 in the afternoon. South wind around 17 mph, with gusts as high as 32 mph. Chance of precipitation is 100%.
7-day forecast for Imperial
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Rain | 17 mph S | 98% |
| Tonight | 51°F | Rain | 6 to 14 mph S | 89% |
| Wednesday | 64°F | Mostly Cloudy | 6 to 10 mph W | 4% |
| Wednesday Night | 44°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 70°F | Sunny | 3 to 8 mph SW | 3% |
| Thursday Night | 45°F | Chance Light Rain then Mostly Cloudy | 5 mph W | 25% |
| Friday | 62°F | Partly Sunny | 5 to 8 mph NW | 4% |
| Friday Night | 41°F | Mostly Cloudy | 5 mph NW | 2% |
| Saturday | 60°F | Partly Sunny | 3 mph N | 0% |
| Saturday Night | 38°F | Partly Cloudy | 2 mph NW | 1% |
| Sunday | 61°F | Mostly Sunny | 2 to 7 mph W | 7% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 6% |
| Monday | 64°F | Sunny | 6 mph SW | 3% |
| Monday Night | 38°F | Clear | 2 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Imperial (38.352, -90.382). Updated through the day.
Growing snapshot for Imperial
Last spring frost
Apr 9
First fall frost
Oct 26
Growing season
197 days
Hardiness zone
7a
More local growing data for Imperial: nearby ZIP 63053 weather · frost dates · planting calendar · Missouri frost dates
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Summer Set
Climate data from the nearest NOAA station, Festus, Mo (9.4 mi from Imperial). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.