Northwoods, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Northwoods, a city in St. Louis County, Missouri.
Tonight
76°F
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 76. Heat index values as high as 101. Southeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Northwoods
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph SE | 23% |
| Saturday | 98°F | Mostly Sunny | 5 to 8 mph SW | 6% |
| Saturday Night | 76°F | Partly Cloudy | 6 mph SW | 2% |
| Sunday | 93°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 7 mph W | 23% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 8 mph N | 62% |
| Monday | 80°F | Showers And Thunderstorms Likely | 9 mph N | 72% |
| Monday Night | 62°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 7 to 10 mph N | 72% |
| Tuesday | 72°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph N | 23% |
| Tuesday Night | 57°F | Mostly Cloudy | 6 to 12 mph N | 6% |
| Wednesday | 75°F | Mostly Sunny | 8 mph N | 2% |
| Wednesday Night | 58°F | Partly Cloudy | 3 to 7 mph N | 1% |
| Thursday | 75°F | Mostly Sunny | 5 to 8 mph N | 4% |
| Thursday Night | 60°F | Partly Cloudy | 3 to 8 mph NE | 3% |
| Friday | 76°F | Mostly Sunny | 7 mph N | 6% |
Forecast source: National Weather Service (api.weather.gov) for Northwoods (38.704, -90.282). Updated through the day.
Growing snapshot for Northwoods
Last spring frost
Apr 2
First fall frost
Nov 4
Growing season
215 days
Hardiness zone
7a
More local growing data for Northwoods: nearby ZIP 63121 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Affton
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Bel-Nor
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Bellefontaine Neighbors
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Brentwood
Bridgeton
Calverton Park
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Chesterfield
Clarkson Valley
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Cool Valley
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 (5 mi from Northwoods). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.