Ottawa, IA Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Ottawa, IA in one place.
A slight chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 76. South wind 16 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Ottawa, 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 21, 2026 10:51 AM CDT.
The active forecast window currently covers Apr 23 to Apr 27, 2026 for Ottawa, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 23 to Apr 27, 2026
- Latest sync
- Apr 21, 2026 10:51 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Ottawa
Thursday looks like the warmest upcoming period in Ottawa at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 44 degrees F.
The strongest winds are forecast for Thursday at about 16 to 23 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 21, 2026 10:51 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
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 before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 51. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
A chance of rain showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 68. Chance of precipitation is 50%.
Mostly clear, with a low around 45.
Mostly sunny, with a high near 65.
A slight chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 44.
A chance of rain showers. Partly sunny, with a high near 63. Chance of precipitation is 30%.
A chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
A chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Mostly cloudy, with a low around 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 23
|
Slight Chance Showers And Thunderstorms
|
76°F |
16 to 23 mph
S
|
|
Thursday Night
Apr 23
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
51°F |
12 to 20 mph
SW
|
|
Friday
Apr 24
|
Slight Chance Showers And Thunderstorms
|
68°F |
14 mph
NW
|
|
Friday Night
Apr 24
|
Mostly Clear
|
45°F |
7 to 10 mph
N
|
|
Saturday
Apr 25
|
Mostly Sunny
|
65°F |
10 mph
NNE
|
|
Saturday Night
Apr 25
|
Slight Chance Showers And Thunderstorms
|
44°F |
9 mph
NNE
|
|
Sunday
Apr 26
|
Chance Rain Showers
|
63°F |
7 to 13 mph
ENE
|
|
Sunday Night
Apr 26
|
Showers And Thunderstorms Likely
|
50°F |
12 mph
E
|
|
Monday
Apr 27
|
Showers And Thunderstorms Likely
|
64°F |
10 to 15 mph
NNE
|
|
Monday Night
Apr 27
|
Chance Showers And Thunderstorms
|
45°F |
10 to 14 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ottawa.