Saint Mary, MO Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Mary, MO in one place.
A slight chance of rain showers between 7am and 10am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. West wind 2 to 7 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Saint Mary, MO is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 15, 2026 1:14 PM CDT.
The active forecast window currently covers Jul 17 to Jul 21, 2026 for Saint Mary, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 1:14 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Mary
Monday looks like the warmest upcoming period in Saint Mary at 95 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 9 mph NW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 1:14 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. West southwest wind around 5 mph. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms before 1pm. Sunny, with a high near 93. West wind 5 to 8 mph.
Mostly clear, with a low around 75. West wind around 6 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. West northwest wind around 7 mph.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind around 3 mph.
Mostly sunny, with a high near 95. West southwest wind around 7 mph.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 74. West southwest wind around 6 mph.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 90. Northwest wind 6 to 9 mph.
Partly cloudy, with a low around 67. North wind 3 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
89°F |
2 to 7 mph
W
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
73°F |
5 mph
WSW
|
|
Saturday
Jul 18
|
Slight Chance Showers And Thunderstorms
|
93°F |
5 to 8 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
75°F |
6 mph
W
|
|
Sunday
Jul 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
7 mph
WNW
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
3 mph
SW
|
|
Monday
Jul 20
|
Mostly Sunny
|
95°F |
7 mph
WSW
|
|
Monday Night
Jul 20
|
Partly Cloudy then Slight Chance Rain Showers
|
74°F |
6 mph
WSW
|
|
Tuesday
Jul 21
|
Slight Chance Rain Showers then Mostly Sunny
|
90°F |
6 to 9 mph
NW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
67°F |
3 to 8 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Mary.