Sumner, IA Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Sumner, IA in one place.
Partly cloudy. Low around 60, with temperatures rising to around 62 overnight. South wind 8 to 12 mph, with gusts as high as 18 mph.
Local Weather Overview
This forecast page for Sumner, IA 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 4, 2026 12:07 AM CDT.
The active forecast window currently covers Jun 3 to Jun 10, 2026 for Sumner, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 3 to Jun 10, 2026
- Latest sync
- Jun 4, 2026 12:07 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumner
Wednesday looks like the warmest upcoming period in Sumner at 89 degrees F.
Tonight is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Thursday at about 12 to 16 mph SSW.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 4, 2026 12:07 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KARX
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 after 7am. Partly sunny. High near 82, with temperatures falling to around 80 in the afternoon. South southwest wind 12 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms before 4am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 63, with temperatures rising to around 65 overnight. South southwest wind 8 to 12 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Southwest wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. West southwest wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 7am. Mostly sunny, with a high near 84. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Partly cloudy, with a low around 63.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 40%.
A chance of rain showers before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Jun 3
|
Partly Cloudy
|
60°F |
8 to 12 mph
S
|
|
Thursday
Jun 4
|
Chance Showers And Thunderstorms
|
82°F |
12 to 16 mph
SSW
|
|
Thursday Night
Jun 4
|
Showers And Thunderstorms
|
63°F |
8 to 12 mph
SSW
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
82°F |
12 mph
SW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
62°F |
5 to 9 mph
WSW
|
|
Saturday
Jun 6
|
Chance Rain Showers then Mostly Sunny
|
84°F |
6 mph
N
|
|
Saturday Night
Jun 6
|
Partly Cloudy
|
63°F |
8 mph
E
|
|
Sunday
Jun 7
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
83°F |
8 to 14 mph
SE
|
|
Sunday Night
Jun 7
|
Chance Showers And Thunderstorms
|
64°F |
13 mph
ESE
|
|
Monday
Jun 8
|
Showers And Thunderstorms Likely
|
85°F |
14 mph
SE
|
|
Monday Night
Jun 8
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
65°F |
8 to 13 mph
SE
|
|
Tuesday
Jun 9
|
Chance Showers And Thunderstorms
|
87°F |
10 mph
SE
|
|
Tuesday Night
Jun 9
|
Slight Chance Showers And Thunderstorms
|
66°F |
9 mph
SE
|
|
Wednesday
Jun 10
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
89°F |
9 to 14 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumner.
