Sumner, IA Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Sumner, IA in one place.
Patchy fog and a slight chance of rain showers before 3am, then rain showers likely and patchy fog. Mostly cloudy. Low around 54, with temperatures rising to around 57 overnight. North wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
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: Apr 15, 2026 4:20 AM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Sumner, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 4:20 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumner
Friday looks like the warmest upcoming period in Sumner at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Friday at about 13 to 24 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 4:20 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
Patchy fog and a slight chance of rain showers before 8am, then a slight chance of showers and thunderstorms between 10am and noon, then a chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 67. Northeast wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms before midnight, then patchy fog and a slight chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a low around 52. North northeast wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts between a half and three quarters of an inch possible.
Areas of fog before 7am, then a slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 72. West wind 6 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Mostly clear, with a low around 54. South wind 7 to 12 mph, with gusts as high as 20 mph.
Showers and thunderstorms likely after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.
A chance of rain showers. Partly sunny, with a high near 45. Chance of precipitation is 30%.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 29.
Sunny, with a high near 50.
Mostly clear, with a low around 32.
Sunny, with a high near 63.
Partly cloudy, with a low around 46.
Sunny, with a high near 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 15
|
Rain Showers Likely
|
54°F |
6 mph
N
|
|
Wednesday
Apr 15
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
67°F |
8 mph
NE
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms then Patchy Fog
|
52°F |
8 mph
NNE
|
|
Thursday
Apr 16
|
Slight Chance Rain Showers
|
72°F |
6 to 10 mph
W
|
|
Thursday Night
Apr 16
|
Mostly Clear
|
54°F |
7 to 12 mph
S
|
|
Friday
Apr 17
|
Partly Sunny then Showers And Thunderstorms Likely
|
76°F |
13 to 24 mph
S
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms Likely
|
35°F |
20 mph
W
|
|
Saturday
Apr 18
|
Chance Rain Showers
|
45°F |
18 to 23 mph
NW
|
|
Saturday Night
Apr 18
|
Slight Chance Rain Showers then Partly Cloudy
|
29°F |
13 to 23 mph
WNW
|
|
Sunday
Apr 19
|
Sunny
|
50°F |
13 to 16 mph
WNW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
32°F |
8 to 12 mph
SSW
|
|
Monday
Apr 20
|
Sunny
|
63°F |
10 to 18 mph
SSE
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
46°F |
17 mph
SSW
|
|
Tuesday
Apr 21
|
Sunny
|
69°F |
14 to 18 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumner.
