Imperial, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Imperial, a community in Jefferson County, Missouri.
Overnight
64°F
Patchy Fog
Patchy fog. Clear, with a low around 64. East wind around 1 mph.
7-day forecast for Imperial
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Patchy Fog | 1 mph E | 0% |
| Tuesday | 88°F | Patchy Fog then Sunny | 3 mph SE | 0% |
| Tuesday Night | 67°F | Mostly Clear | 3 mph S | 0% |
| Wednesday | 91°F | Sunny | 1 to 5 mph S | 7% |
| Wednesday Night | 71°F | Slight Chance Showers And Thunderstorms | 5 mph S | 59% |
| Thursday | 88°F | Showers And Thunderstorms Likely | 3 mph S | 66% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 2 mph S | 45% |
| Friday | 88°F | Chance Showers And Thunderstorms | 3 mph SW | 45% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 2 mph SW | 37% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 3 mph SW | 37% |
| Saturday Night | 71°F | Mostly Clear | 5 mph S | 7% |
| Sunday | 92°F | Sunny | 6 mph SW | 7% |
| Sunday Night | 74°F | Mostly Clear | 6 mph S | 6% |
| Monday | 94°F | Sunny | 6 mph SW | 6% |
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 Aug 4, 2026.