Weather World
Sumner, MO 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Sumner, MO Weather Forecast
Sumner, MO Weather Forecast Date: 128 PM CDT Tue Sep 08 2026
The area/counties/county of: Chariton, including the cities of: Salisbury, Brunswick, and Keytesville.or toggle through each period.
This Afternoon... Sunny, hot with highs in the upper 90s. South winds 5 to 10 mph. Heat index values up to 107.
Tonight... Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 104 early in the evening.
Wednesday... Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 80s. Northwest winds around 5 mph. Chance of rain 70%.
Wednesday Night... Showers likely with a chance of thunderstorms in the evening, then showers after midnight. Lows in the mid 60s. West winds around 5 mph. Chance of rain 90%.
Thursday... Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 80s. North winds around 5 mph.
Thursday Night... Mostly clear. Lows in the upper 50s. Highs in the mid 80s.
Friday... Mostly clear. Lows in the upper 50s. Highs in the mid 80s.
Friday Night... Mostly clear in the evening, then partly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of rain 50%.
Saturday... Showers likely with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 70%.
Saturday Night... Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Lows in the lower 60s. Chance of rain 50%.
Sunday... Partly sunny. A chance of showers. Highs in the lower 80s. Chance of rain 40%.
Sunday Night... Partly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 30%.
POP = Probability of Precipitation
Sumner Radar Loop
Use the map search tool if you want to place a location marker on the radar map...