Big Spring, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Spring, a community in Montgomery County, Missouri.
This Afternoon
72°F
Light Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 72, with temperatures falling to around 66 in the afternoon. South wind around 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%.
7-day forecast for Big Spring
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Light Rain | 14 mph S | 99% |
| Tonight | 47°F | Chance Light Rain then Chance Rain Showers | 5 to 9 mph SW | 50% |
| Wednesday | 60°F | Mostly Cloudy | 6 to 10 mph W | 3% |
| Wednesday Night | 40°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 66°F | Sunny | 3 to 7 mph W | 11% |
| Thursday Night | 40°F | Chance Light Rain then Mostly Cloudy | 3 mph NW | 26% |
| Friday | 60°F | Partly Sunny | 2 to 6 mph NW | 8% |
| Friday Night | 37°F | Mostly Cloudy | 0 to 3 mph N | 2% |
| Saturday | 59°F | Partly Sunny | 0 to 3 mph NW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NW | 3% |
| Sunday | 60°F | Mostly Sunny | 1 to 6 mph W | 9% |
| Sunday Night | 34°F | Mostly Clear | 3 mph W | 4% |
| Monday | 64°F | Sunny | 1 to 5 mph SW | 2% |
| Monday Night | 36°F | Mostly Clear | 1 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Big Spring (38.795, -91.483). Updated through the day.
Growing snapshot for Big Spring
Last spring frost
Apr 14
First fall frost
Oct 23
Growing season
191 days
Hardiness zone
6b
More local growing data for Big Spring: nearby ZIP 63363 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Warrenton 1 N, Mo (17.9 mi from Big Spring). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.