Humboldt, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Humboldt, a city in Humboldt County, Iowa.
Today
74°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 7am, then patchy fog and a chance of showers and thunderstorms between 7am and 3pm. Mostly cloudy. High near 74, with temperatures falling to around 71 in the afternoon. North wind 5 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Humboldt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Patchy Fog | 5 to 9 mph N | 51% |
| Tonight | 59°F | Slight Chance Rain Showers | 8 to 12 mph NNE | 18% |
| Sunday | 67°F | Chance Drizzle | 14 mph NE | 28% |
| Sunday Night | 53°F | Chance Rain Showers | 10 mph ENE | 52% |
| Monday | 61°F | Chance Rain Showers | 10 mph ENE | 52% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 5 to 8 mph ENE | 36% |
| Tuesday | 62°F | Mostly Sunny | 7 mph ENE | 8% |
| Tuesday Night | 44°F | Mostly Clear | 5 mph ESE | 0% |
| Wednesday | 66°F | Sunny | 5 mph ESE | 1% |
| Wednesday Night | 49°F | Partly Cloudy then Slight Chance Rain Showers | 2 mph SE | 15% |
| Thursday | 68°F | Slight Chance Rain Showers | 5 mph SE | 16% |
| Thursday Night | 53°F | Mostly Cloudy | 2 mph SE | 7% |
| Friday | 70°F | Partly Sunny | 2 to 6 mph SE | 7% |
| Friday Night | 54°F | Mostly Cloudy | 5 mph SE | 11% |
Forecast source: National Weather Service (api.weather.gov) for Humboldt (42.723, -94.225). Updated through the day.
Growing snapshot for Humboldt
Last spring frost
Apr 27
First fall frost
Oct 9
Growing season
166 days
Hardiness zone
5a
More local growing data for Humboldt: nearby ZIP 50548 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Humboldt Wtp, Ia (0.4 mi from Humboldt). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.