Glen Allen, MO Weather & Growing Conditions
Today
97°F
Sunny
Sunny, with a high near 97. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 97°F | Sunny | 6 mph SW | 1% |
| Tonight | 70°F | Mostly Clear | 3 mph SW | 1% |
| Sunday | 95°F | Mostly Sunny | 5 mph WSW | 1% |
| Sunday Night | 67°F | Partly Cloudy then Chance Showers And Thunderstorms | 1 to 5 mph SSW | 29% |
| Monday | 87°F | Chance Showers And Thunderstorms | 6 mph NNE | 47% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 6 mph N | 47% |
| Tuesday | 76°F | Chance Showers And Thunderstorms then Partly Sunny | 9 mph N | 26% |
| Tuesday Night | 55°F | Partly Cloudy | 6 to 9 mph N | 4% |
| Wednesday | 75°F | Mostly Sunny | 8 mph N | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 6 mph N | 0% |
| Thursday | 77°F | Mostly Sunny | 6 mph NNE | 1% |
| Thursday Night | 56°F | Partly Cloudy | 5 mph NNE | 1% |
| Friday | 79°F | Partly Sunny | 3 to 7 mph NNE | 4% |
| Friday Night | 57°F | Partly Cloudy | 6 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Glen Allen, MO
Last spring frost
Apr 12
First fall frost
Oct 23
Growing season
193 days
Hardiness zone
6b
Explore more for Glen Allen, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Marble Hill, Mo (9.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.