Frontenac, MO Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Frontenac, MO in one place.
Mostly sunny, with a high near 83. South wind 6 to 15 mph, with gusts as high as 26 mph.
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: Apr 22, 2026 1:52 PM CDT.
The active forecast window currently covers Apr 23 to Apr 28, 2026 for Frontenac, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 23 to Apr 28, 2026
- Latest sync
- Apr 22, 2026 1:52 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Frontenac
Thursday looks like the warmest upcoming period in Frontenac at 83 degrees F.
Monday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Monday at about 16 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 22, 2026 1:52 PM 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
Showers and thunderstorms likely after 1am. Mostly cloudy, with a low around 63. South wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Showers and thunderstorms. Mostly cloudy, with a high near 77. Southwest wind 7 to 10 mph. Chance of precipitation is 90%.
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 56. Chance of precipitation is 70%.
Mostly sunny, with a high near 76.
Partly cloudy, with a low around 54.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 51. Chance of precipitation is 70%.
Mostly sunny, with a high near 71.
A slight chance of rain showers between 7pm and 1am. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 23
|
Mostly Sunny
|
83°F |
6 to 15 mph
S
|
|
Thursday Night
Apr 23
|
Mostly Cloudy then Showers And Thunderstorms Likely
|
63°F |
10 to 15 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms
|
77°F |
7 to 10 mph
SW
|
|
Friday Night
Apr 24
|
Showers And Thunderstorms Likely
|
56°F |
7 mph
NW
|
|
Saturday
Apr 25
|
Mostly Sunny
|
76°F |
7 mph
NE
|
|
Saturday Night
Apr 25
|
Partly Cloudy
|
54°F |
6 mph
E
|
|
Sunday
Apr 26
|
Chance Showers And Thunderstorms
|
76°F |
6 to 12 mph
E
|
|
Sunday Night
Apr 26
|
Showers And Thunderstorms Likely
|
61°F |
10 to 14 mph
SE
|
|
Monday
Apr 27
|
Showers And Thunderstorms Likely
|
79°F |
16 mph
S
|
|
Monday Night
Apr 27
|
Showers And Thunderstorms Likely
|
51°F |
10 to 14 mph
W
|
|
Tuesday
Apr 28
|
Mostly Sunny
|
71°F |
6 to 9 mph
NW
|
|
Tuesday Night
Apr 28
|
Slight Chance Rain Showers
|
52°F |
2 to 6 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Frontenac.
