Martinsburg, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Martinsburg, a town in Audrain County, Missouri.
This Afternoon
93°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny, with a high near 93. Heat index values as high as 102. Southwest wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Martinsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Slight Chance Showers And Thunderstorms | 3 mph SW | 24% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph S | 19% |
| Saturday | 93°F | Partly Sunny | 6 to 10 mph SW | 5% |
| Saturday Night | 68°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SW | 24% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 3 to 7 mph W | 49% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 8 mph N | 77% |
| Monday | 72°F | Showers And Thunderstorms | 6 to 9 mph NE | 77% |
| Monday Night | 55°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 47% |
| Tuesday | 66°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph NE | 18% |
| Tuesday Night | 49°F | Mostly Cloudy | 3 to 9 mph N | 4% |
| Wednesday | 70°F | Mostly Sunny | 7 mph NE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 2 to 6 mph NE | 1% |
| Thursday | 72°F | Mostly Sunny | 2 to 6 mph NE | 6% |
| Thursday Night | 53°F | Partly Cloudy | 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Martinsburg (39.101, -91.647). Updated through the day.
Growing snapshot for Martinsburg
Last spring frost
Apr 11
First fall frost
Oct 25
Growing season
197 days
Hardiness zone
6b
More local growing data for Martinsburg: nearby ZIP 65264 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mexico, Mo (12.3 mi from Martinsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.