Glen Allen, MO Weather & Growing Conditions
This Afternoon
64°F
Mostly Sunny
Mostly sunny. High near 64, with temperatures falling to around 58 in the afternoon. West southwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Mostly Sunny | 8 mph WSW | 0% |
| Tonight | 42°F | Mostly Clear | 2 to 6 mph WSW | 0% |
| Thursday | 67°F | Sunny | 2 to 6 mph WSW | 1% |
| Thursday Night | 40°F | Partly Cloudy | 5 mph NNW | 2% |
| Friday | 57°F | Partly Sunny | 5 to 8 mph N | 0% |
| Friday Night | 31°F | Mostly Clear | 6 mph N | 0% |
| Saturday | 55°F | Sunny | 5 mph N | 0% |
| Saturday Night | 28°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 60°F | Sunny | 2 mph NW | 0% |
| Sunday Night | 30°F | Mostly Clear | 1 mph NW | 0% |
| Monday | 64°F | Sunny | 0 to 3 mph NE | 0% |
| Monday Night | 34°F | Clear | 2 mph WSW | 1% |
| Tuesday | 66°F | Sunny | 3 mph WNW | 1% |
| Tuesday Night | 37°F | Mostly Clear | 2 mph WNW | 3% |
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 Nov 5, 2026.