Pasadena Hills, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pasadena Hills, a city in St. Louis County, Missouri.
This Afternoon
98°F
Partly Sunny
Partly sunny, with a high near 98. Heat index values as high as 101. Southwest wind 5 to 8 mph.
7-day forecast for Pasadena Hills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Partly Sunny | 5 to 8 mph SW | 1% |
| Tonight | 76°F | Partly Cloudy | 6 mph SW | 1% |
| Sunday | 93°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph W | 24% |
| Sunday Night | 69°F | Showers And Thunderstorms Likely | 6 to 9 mph NE | 72% |
| Monday | 80°F | Showers And Thunderstorms Likely | 8 mph NE | 72% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 51% |
| Tuesday | 72°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph N | 21% |
| Tuesday Night | 57°F | Mostly Cloudy | 6 to 12 mph N | 1% |
| Wednesday | 73°F | Partly Sunny | 9 mph N | 0% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 9 mph N | 0% |
| Thursday | 76°F | Mostly Sunny | 6 mph N | 1% |
| Thursday Night | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 6 mph NE | 15% |
| Friday | 79°F | Slight Chance Rain Showers | 3 to 7 mph NE | 18% |
| Friday Night | 61°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Pasadena Hills (38.708, -90.292). Updated through the day.
Growing snapshot for Pasadena Hills
Last spring frost
Apr 2
First fall frost
Nov 4
Growing season
215 days
Hardiness zone
7a
More local growing data for Pasadena Hills: nearby ZIP 63121 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Affton
Ballwin
Bel-Nor
Bel-Ridge
Bella Villa
Bellefontaine Neighbors
Bellerive Acres
Berkeley
Beverly Hills
Black Jack
Breckenridge Hills
Brentwood
Bridgeton
Calverton Park
Castle Point
Champ
Charlack
Chesterfield
Clarkson Valley
Clayton
Concord
Cool Valley
Country Club Hills
Country Life Acres
Crestwood
Creve Coeur
Crystal Lake Park
Dellwood
Des Peres
Edmundson
Climate data from the nearest NOAA station, St Louis Lambert Intl Ap, Mo (5 mi from Pasadena Hills). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.