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Spencer, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Spencer, a city in Clay County, Iowa.

Overnight
62°F
Widespread Fog
Widespread fog and a slight chance of showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 65 overnight. North northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Spencer

WhenTempForecastWindPrecip
Overnight 62°F Widespread Fog 5 mph NNE 24%
Saturday 69°F Widespread Fog 5 to 10 mph N 36%
Saturday Night 55°F Slight Chance Rain Showers then Cloudy 10 to 15 mph NNE 16%
Sunday 66°F Cloudy 15 mph NE 14%
Sunday Night 51°F Chance Rain Showers 10 to 15 mph ENE 40%
Monday 61°F Chance Rain Showers 10 mph ENE 52%
Monday Night 46°F Chance Rain Showers then Mostly Cloudy 5 to 10 mph ENE 33%
Tuesday 63°F Mostly Sunny 5 to 10 mph E 6%
Tuesday Night 43°F Partly Cloudy 0 to 5 mph ESE 1%
Wednesday 66°F Mostly Sunny 0 to 5 mph SE 2%
Wednesday Night 48°F Partly Cloudy then Slight Chance Rain Showers 5 mph SE 15%
Thursday 68°F Slight Chance Rain Showers 5 mph SE 19%
Thursday Night 51°F Mostly Cloudy 5 mph SE 13%
Friday 70°F Partly Sunny 5 to 10 mph SE 13%

Forecast source: National Weather Service (api.weather.gov) for Spencer (43.147, -95.153). Updated through the day.

Growing snapshot for Spencer

Last spring frost
May 1
First fall frost
Oct 3
Growing season
154 days
Hardiness zone
5a

More local growing data for Spencer: nearby ZIP 51301 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Spencer 1 N, Ia (0.9 mi from Spencer). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.