Frontenac, MO Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Frontenac, MO in one place.
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 10am and 11am. Mostly sunny, with a high near 92. Heat index values as high as 105. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Frontenac, 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: Jun 8, 2026 6:52 AM CDT.
The active forecast window currently covers Jun 9 to Jun 14, 2026 for Frontenac, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 6:52 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Frontenac
Wednesday looks like the warmest upcoming period in Frontenac at 95 degrees F.
Thursday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Thursday at about 7 to 14 mph SW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 6:52 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
Mostly clear, with a low around 75. Southwest wind around 7 mph.
Sunny, with a high near 95.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 70. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
A slight chance of rain showers before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Chance Showers And Thunderstorms then Mostly Sunny
|
92°F |
5 to 8 mph
SW
|
|
Tuesday Night
Jun 9
|
Mostly Clear
|
75°F |
7 mph
SW
|
|
Wednesday
Jun 10
|
Sunny
|
95°F |
6 to 12 mph
SW
|
|
Wednesday Night
Jun 10
|
Partly Cloudy then Chance Showers And Thunderstorms
|
75°F |
8 to 12 mph
S
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
92°F |
7 to 14 mph
SW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
70°F |
5 to 13 mph
W
|
|
Friday
Jun 12
|
Chance Showers And Thunderstorms
|
89°F |
6 mph
NW
|
|
Friday Night
Jun 12
|
Chance Showers And Thunderstorms
|
70°F |
5 mph
SE
|
|
Saturday
Jun 13
|
Chance Showers And Thunderstorms
|
89°F |
7 mph
SW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
70°F |
6 mph
SW
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
85°F |
5 to 8 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Frontenac.
