Jennings, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jennings, a city in St. Louis County, Missouri.
Overnight
57°F
Slight Chance Drizzle
A slight chance of drizzle after 5am. Mostly cloudy, with a low around 57. Southwest wind around 8 mph.
7-day forecast for Jennings
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Slight Chance Drizzle | 8 mph SW | 12% |
| Wednesday | 60°F | Slight Chance Drizzle then Mostly Cloudy | 8 to 13 mph W | 12% |
| Wednesday Night | 47°F | Partly Cloudy | 7 mph W | 0% |
| Thursday | 64°F | Sunny | 7 to 10 mph W | 0% |
| Thursday Night | 48°F | Mostly Cloudy | 6 mph NW | 3% |
| Friday | 58°F | Partly Sunny | 7 to 10 mph N | 1% |
| Friday Night | 38°F | Partly Cloudy | 2 to 7 mph N | 0% |
| Saturday | 56°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 38°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 61°F | Sunny | 2 to 6 mph NW | 1% |
| Sunday Night | 39°F | Clear | 2 mph W | 0% |
| Monday | 66°F | Sunny | 1 to 5 mph SW | 0% |
| Monday Night | 44°F | Clear | 3 mph SW | 0% |
| Tuesday | 69°F | Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Jennings (38.723, -90.264). Updated through the day.
Growing snapshot for Jennings
Last spring frost
Apr 2
First fall frost
Nov 4
Growing season
215 days
Hardiness zone
7a
More local growing data for Jennings: nearby ZIP 63136 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
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Chesterfield
Clarkson Valley
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Country Club Hills
Country Life Acres
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Crystal Lake Park
Dellwood
Des Peres
Edmundson
Climate data from the nearest NOAA station, St Louis Lambert Intl Ap, Mo (6.2 mi from Jennings). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.