Logan, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Logan, a city in Harrison County, Iowa.
Overnight
69°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1am, then a chance of showers and thunderstorms between 1am and 2am, then showers and thunderstorms likely between 2am and 5am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 69, with temperatures rising to around 72 overnight. Southwest wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Logan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 66% |
| Saturday | 77°F | Chance Showers And Thunderstorms then Partly Sunny | 2 to 8 mph NNW | 43% |
| Saturday Night | 61°F | Chance Rain Showers | 8 mph N | 25% |
| Sunday | 64°F | Chance Rain Showers | 10 mph NNE | 35% |
| Sunday Night | 56°F | Chance Rain Showers | 6 to 9 mph NE | 37% |
| Monday | 59°F | Rain Showers Likely | 9 mph ENE | 60% |
| Monday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 3 to 7 mph NE | 49% |
| Tuesday | 61°F | Partly Sunny | 3 to 7 mph ENE | 7% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph E | 2% |
| Wednesday | 64°F | Mostly Sunny | 5 mph SE | 2% |
| Wednesday Night | 52°F | Mostly Cloudy then Chance Rain Showers | 3 mph SE | 28% |
| Thursday | 65°F | Chance Rain Showers | 6 mph SE | 30% |
| Thursday Night | 56°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 mph SE | 24% |
| Friday | 67°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph SE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Logan (41.645, -95.791). Updated through the day.
Growing snapshot for Logan
Last spring frost
Apr 29
First fall frost
Oct 8
Growing season
162 days
Hardiness zone
5b
More local growing data for Logan: nearby ZIP 51546 weather · frost dates · planting calendar · Iowa frost dates
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River Sioux
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Climate data from the nearest NOAA station, Logan, Ia (1.1 mi from Logan). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.