Harman US

Delmar, IA Weather & Growing Conditions

This Afternoon
80°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 80. South wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 80°F Chance Showers And Thunderstorms 10 mph S 49%
Tonight 63°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 to 10 mph NW 82%
Sunday 69°F Rain Showers Likely 10 mph NE 63%
Sunday Night 56°F Chance Rain Showers 10 mph NE 37%
Monday 64°F Chance Rain Showers 10 mph NE 51%
Monday Night 50°F Chance Rain Showers 5 to 10 mph NE 44%
Tuesday 63°F Slight Chance Rain Showers 10 mph NE 23%
Tuesday Night 47°F Partly Cloudy 5 mph NE 5%
Wednesday 66°F Mostly Sunny 5 mph NE 2%
Wednesday Night 50°F Partly Cloudy 0 to 5 mph NE 1%
Thursday 68°F Mostly Sunny 0 to 5 mph NE 6%
Thursday Night 53°F Partly Cloudy 0 mph 6%
Friday 71°F Mostly Sunny 0 to 5 mph NE 5%
Friday Night 52°F Partly Cloudy 0 mph 5%

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

Growing snapshot for Delmar, IA

Last spring frost
Apr 25
First fall frost
Oct 14
Growing season
171 days
Hardiness zone
5a

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

Climate data from the nearest NOAA station, Maquoketa, Ia (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.