Saint Johns, MO Weather Forecast
Local 7-day forecast
Scattered Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Johns, MO in one place.
Scattered rain showers between 7am and 1pm, then scattered showers and thunderstorms. Mostly sunny, with a high near 83. Southwest wind around 10 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Saint Johns, 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: Apr 15, 2026 3:42 AM CDT.
The active forecast window currently covers Apr 16 to Apr 21, 2026 for Saint Johns, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 3:42 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Johns
Friday looks like the warmest upcoming period in Saint Johns at 88 degrees F.
Saturday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Saturday at about 15 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 3:42 AM CDT
- Coverage
- 6 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
Scattered showers and thunderstorms before 7pm. Mostly clear, with a low around 62. Southwest wind around 6 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1am, then showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 80%.
Showers and thunderstorms. Partly sunny, with a high near 67. Chance of precipitation is 80%.
A chance of rain showers before 1am. Partly cloudy, with a low around 42. Chance of precipitation is 40%.
Sunny, with a high near 64.
Clear, with a low around 43.
Sunny, with a high near 72.
Mostly clear, with a low around 52.
Mostly sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Scattered Rain Showers
|
83°F |
10 mph
SW
|
|
Thursday Night
Apr 16
|
Scattered Showers And Thunderstorms then Mostly Clear
|
62°F |
6 mph
SW
|
|
Friday
Apr 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
88°F |
6 to 13 mph
S
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms
|
54°F |
13 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
67°F |
15 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
42°F |
9 to 15 mph
W
|
|
Sunday
Apr 19
|
Sunny
|
64°F |
12 mph
W
|
|
Sunday Night
Apr 19
|
Clear
|
43°F |
5 to 8 mph
SW
|
|
Monday
Apr 20
|
Sunny
|
72°F |
6 to 9 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
52°F |
8 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
78°F |
8 to 12 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Johns.