Derby, IA Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Derby, IA in one place.
Mostly clear. Low around 68, with temperatures rising to around 70 overnight. South southwest wind around 3 mph.
Local Weather Overview
This forecast page for Derby, 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: Jul 15, 2026 3:38 AM CDT.
The active forecast window currently covers Jul 15 to Jul 21, 2026 for Derby, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 3:38 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Derby
Monday looks like the warmest upcoming period in Derby at 95 degrees F.
Overnight is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Tuesday at about 7 to 15 mph NNW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 3:38 AM CDT
- Coverage
- 7 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
Patchy fog before 8am. Sunny, with a high near 91. Northeast wind 0 to 3 mph.
Partly cloudy, with a low around 70. South wind around 3 mph.
A slight chance of rain showers between 2pm and 4pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 91. Southwest wind around 3 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. South southwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 93.
Mostly clear, with a low around 73.
Sunny, with a high near 94.
Mostly clear, with a low around 72.
Sunny, with a high near 94.
Mostly clear, with a low around 73.
Sunny, with a high near 95.
A slight chance of rain showers after 1am. Mostly clear, with a low around 70.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 15
|
Mostly Clear
|
68°F |
3 mph
SSW
|
|
Wednesday
Jul 15
|
Patchy Fog then Sunny
|
91°F |
0 to 3 mph
NE
|
|
Wednesday Night
Jul 15
|
Partly Cloudy
|
70°F |
3 mph
S
|
|
Thursday
Jul 16
|
Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
3 mph
SW
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
5 mph
SSW
|
|
Friday
Jul 17
|
Sunny
|
93°F |
5 to 10 mph
SW
|
|
Friday Night
Jul 17
|
Mostly Clear
|
73°F |
7 to 10 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
94°F |
10 mph
WSW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
72°F |
6 to 10 mph
WSW
|
|
Sunday
Jul 19
|
Sunny
|
94°F |
6 to 9 mph
SW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
73°F |
10 mph
SSW
|
|
Monday
Jul 20
|
Sunny
|
95°F |
9 to 13 mph
WSW
|
|
Monday Night
Jul 20
|
Mostly Clear then Slight Chance Rain Showers
|
70°F |
6 to 13 mph
NW
|
|
Tuesday
Jul 21
|
Slight Chance Rain Showers then Mostly Sunny
|
89°F |
7 to 15 mph
NNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Derby.