St. James, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. James, a city in Phelps County, Missouri.
This Afternoon
95°F
Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 4pm, then a slight chance of showers and thunderstorms. Sunny. High near 95, with temperatures falling to around 93 in the afternoon. Heat index values as high as 102. South wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for St. James
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 95°F | Slight Chance Showers And Thunderstorms | 5 mph S | 21% |
| Tonight | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 mph S | 18% |
| Saturday | 96°F | Sunny | 7 to 10 mph SW | 3% |
| Saturday Night | 70°F | Partly Cloudy | 7 mph SW | 0% |
| Sunday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 mph W | 17% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph NE | 66% |
| Monday | 79°F | Showers And Thunderstorms Likely | 5 to 9 mph N | 66% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 6 to 9 mph N | 64% |
| Tuesday | 70°F | Chance Rain Showers then Partly Sunny | 10 mph N | 35% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 9 mph N | 5% |
| Wednesday | 72°F | Mostly Sunny | 8 mph N | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 2 to 7 mph NE | 1% |
| Thursday | 74°F | Mostly Sunny | 2 to 7 mph NE | 4% |
| Thursday Night | 54°F | Partly Cloudy | 6 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for St. James (38.002, -91.613). Updated through the day.
Growing snapshot for St. James
Last spring frost
Apr 5
First fall frost
Nov 1
Growing season
207 days
Hardiness zone
6b
More local growing data for St. James: nearby ZIP 65559 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rolla Missouri S&T, Mo (9.7 mi from St. James). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.