Harman US

Percival, IA Weather & Growing Conditions

Today
84°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 4pm, then showers and thunderstorms likely. Partly sunny. High near 84, with temperatures falling to around 82 in the afternoon. Northeast wind 3 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 84°F Slight Chance Showers And Thunderstorms 3 to 10 mph NE 67%
Tonight 64°F Patchy Smoke 7 to 13 mph NNE 83%
Wednesday 74°F Showers And Thunderstorms 8 mph NE 78%
Wednesday Night 59°F Slight Chance Showers And Thunderstorms then Partly Cloudy 1 to 7 mph NE 19%
Thursday 82°F Mostly Sunny 3 mph E 3%
Thursday Night 64°F Mostly Clear then Slight Chance Showers And Thunderstorms 3 mph SSE 21%
Friday 87°F Slight Chance Showers And Thunderstorms then Sunny 2 to 7 mph S 21%
Friday Night 69°F Mostly Clear 6 mph SSE 5%
Saturday 91°F Sunny 3 to 12 mph S 1%
Saturday Night 73°F Mostly Clear 9 to 14 mph S 7%
Sunday 93°F Mostly Sunny 8 to 13 mph S 7%
Sunday Night 73°F Partly Cloudy 14 mph SSE 8%
Monday 94°F Mostly Sunny 10 to 16 mph S 8%
Monday Night 74°F Partly Cloudy then Slight Chance Showers And Thunderstorms 10 to 15 mph SSE 15%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Percival, IA

Last spring frost
Apr 18
First fall frost
Oct 19
Growing season
182 days
Hardiness zone
5b

Explore more for Percival, IA: full frost dates · planting calendar · Iowa frost dates

Climate data from the nearest NOAA station, Nebraska City 2Nw, Ne (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.