Harman US

Chapin, IA Weather & Growing Conditions

Overnight
64°F
Patchy Fog
Patchy fog and showers and thunderstorms likely before 4am, then patchy fog and a chance of showers and thunderstorms. Cloudy, with a low around 64. East southeast wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Overnight 64°F Patchy Fog 7 mph ESE 58%
Saturday 74°F Patchy Fog 8 mph W 53%
Saturday Night 57°F Chance Showers And Thunderstorms 10 mph N 26%
Sunday 65°F Slight Chance Rain Showers then Slight Chance Drizzle 10 to 14 mph NE 21%
Sunday Night 51°F Chance Rain Showers 12 mph ENE 29%
Monday 61°F Chance Rain Showers 12 mph ENE 46%
Monday Night 46°F Chance Rain Showers 5 to 9 mph ENE 37%
Tuesday 60°F Mostly Sunny 7 mph ENE 11%
Tuesday Night 43°F Partly Cloudy 2 to 6 mph E 1%
Wednesday 64°F Sunny 5 mph E 1%
Wednesday Night 48°F Partly Cloudy 2 mph ESE 6%
Thursday 65°F Partly Sunny 3 mph ESE 11%
Thursday Night 51°F Mostly Cloudy 2 mph ESE 5%
Friday 68°F Mostly Sunny 1 to 5 mph ESE 5%

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

Growing snapshot for Chapin, IA

Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
162 days

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

Climate data from the nearest NOAA station, Hampton, Ia (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.