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Defiance, IA 51527 Weather
It is 66°F and clear in Defiance, IA 51527, observed at 4:35 PM CDT. Today: Sunny, high 67°F, low 45°F. Hourly and 7-day forecast from the National Weather Service. Times are local (CDT).
Defiance, IA 51527 current weather
66°F
Clear
H 67° / L 45°Feels like 66°
Observed at Denison (12.1 mi away), 10/29/2026, 4:35 PM CDT
7-day forecast
Tap a day for details
Today10/2953% chance of precipitationLow 45°High 67°
This Afternoon: Sunny. High near 67, with temperatures falling to around 63 in the afternoon. East northeast wind around 9 mph.
Tonight: A chance of rain showers between 1am and 4am, then a chance of showers and thunderstorms. Partly cloudy. Low around 45, with temperatures rising to around 47 overnight. East wind 3 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
SunnyFri10/3072% chance of precipitationLow 48°High 57°
Friday: Showers and thunderstorms likely. Cloudy. High near 57, with temperatures falling to around 55 in the afternoon. East wind around 9 mph, with gusts as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Friday Night: A chance of showers and thunderstorms before 7pm, then patchy fog and showers and thunderstorms likely. Cloudy, with a low around 48. East southeast wind 3 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Showers And Thunderstorms LikelySat10/3141% chance of precipitationLow 50°High 65°
Saturday: A chance of rain showers. Mostly cloudy, with a high near 65. South southeast wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night: A slight chance of rain showers before 1am. Mostly cloudy, with a low around 50. Southeast wind 2 to 6 mph. Chance of precipitation is 20%.
Chance Rain ShowersSun11/150% chance of precipitationLow 54°High 67°
Sunday: Partly sunny, with a high near 67. Southeast wind 2 to 6 mph.
Sunday Night: A chance of rain showers after midnight. Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph, with gusts as high as 17 mph.
Partly SunnyMon11/294% chance of precipitationLow 53°High 67°
Monday: Showers and thunderstorms. Cloudy, with a high near 67. Southeast wind 12 to 17 mph, with gusts as high as 28 mph.
Monday Night: Showers and thunderstorms. Mostly cloudy, with a low around 53. South southeast wind 8 to 15 mph, with gusts as high as 26 mph.
Showers And ThunderstormsTue11/372% chance of precipitationLow 46°High 65°
Tuesday: Rain showers likely. Mostly cloudy, with a high near 65. South southwest wind around 13 mph, with gusts as high as 21 mph.
Tuesday Night: A chance of rain showers. Mostly cloudy, with a low around 46. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Rain Showers LikelyWed11/450% chance of precipitationLow 39°High 59°
Wednesday: A chance of rain showers. Mostly cloudy, with a high near 59. North northwest wind 9 to 13 mph, with gusts as high as 21 mph.
Wednesday Night: A slight chance of rain showers. Mostly cloudy, with a low around 39. North northwest wind 6 to 9 mph, with gusts as high as 18 mph.
Chance Rain Showers
Forecast for 41.813, -95.330 from the NWS OAX office, updated 10/29/2026, 3:11 PM PT · Official forecast on weather.gov
From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.
Radar and satellite
National radarNEXRAD (up to 24 hours) and GOES
Frequently asked questions
- What is the weather in Defiance, IA 51527 right now?
- The latest observation from Denison was 66°F and clear, reported at 10/29/2026, 4:35 PM CDT.
- What is the high temperature today in Defiance, IA 51527?
- The National Weather Service forecast for this afternoon calls for a high near 67°F. Sunny.
- What time is sunrise and sunset in Defiance, IA 51527 today?
- Sunrise is about 7:50 AM CDT and sunset is about 6:19 PM CDT (calculated for the center of the area, within a few minutes).
- What is the normal October weather in Defiance, IA 51527?
- At Harlan, the 1991 to 2020 normal high in October is 65°F and the normal low is 39°F.
Nearby hazards
Iowa hazardsSevere storm and flash flood outlooks, expected rain, river flooding and wildfires near this area
- Severe storm outlook today:General thunderstormsOutlook map
- Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
- River gauges within 40 miles at or above flood stage: None reported
- Active wildfires within 50 miles: None reported
UV and air quality forecast
EPA and AirNow
- AQI forecast today (Southwest Iowa)
- 42GoodOzone
- AQI forecast tomorrow (Southwest Iowa)
- 30GoodOzone
Drought
By countyShelby County, week of 10/27/2026
No drought or abnormal dryness in this county.
Sun and moon
Local time, center of the area
- Sunrise
- 7:50 AM
- Sunset
- 6:19 PM
- Daylight
- 10 hr 29 min
- Moon
- Waning Gibbous 85% lit
- First light (civil dawn)
- 7:21 AM
- Last light (civil dusk)
- 6:48 PM
- Moonrise
- 8:44 PM
- Moonset
- 12:10 PM
Normal October weather
ClimateNormal October high 65°, low 39°, precipitation 2.37 in for the month. 1991 to 2020 normals at Harlan, 12 mi away.
Other places nearby
Data sources
- National Weather Service APINOAA · Official site
- Convective Outlooks and Storm ReportsNOAA Storm Prediction Center · Official site
- Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center · Official site
- National Water Prediction ServiceNOAA National Weather Service · Official site
- WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center · Official site
- UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA · Official site
- AirNowU.S. Environmental Protection Agency · Official site
- NWS HeatRisk (experimental)NOAA National Weather Service · Official site
- U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA · Official site
- BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency · Official site
- U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
- Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services · Official site
- NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University · Official site
- GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research · Official site
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About this data
Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.
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