Pomeroy, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pomeroy, a city in Calhoun County, Iowa.
Tonight
58°F
Cloudy
Cloudy. Low around 58, with temperatures rising to around 60 overnight. North northeast wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Pomeroy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Cloudy | 10 mph NNE | 12% |
| Sunday | 66°F | Chance Drizzle | 9 to 13 mph NE | 36% |
| Sunday Night | 52°F | Rain Showers Likely | 8 mph ENE | 65% |
| Monday | 58°F | Showers And Thunderstorms | 9 mph NE | 81% |
| Monday Night | 48°F | Rain Showers Likely then Mostly Cloudy | 6 mph NE | 61% |
| Tuesday | 62°F | Partly Sunny | 5 mph ENE | 7% |
| Tuesday Night | 45°F | Partly Cloudy | 2 mph E | 1% |
| Wednesday | 66°F | Mostly Sunny | 3 mph ESE | 1% |
| Wednesday Night | 50°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 mph SE | 17% |
| Thursday | 69°F | Chance Showers And Thunderstorms | 2 to 6 mph SSE | 36% |
| Thursday Night | 55°F | Slight Chance Rain Showers | 2 mph SE | 22% |
| Friday | 72°F | Slight Chance Rain Showers | 3 mph ESE | 17% |
| Friday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph SE | 20% |
| Saturday | 71°F | Chance Rain Showers | 3 to 8 mph SE | 33% |
Forecast source: National Weather Service (api.weather.gov) for Pomeroy (42.552, -94.678). Updated through the day.
Growing snapshot for Pomeroy
Last spring frost
Apr 26
First fall frost
Oct 10
Growing season
167 days
Hardiness zone
5a
More local growing data for Pomeroy: nearby ZIP 50575 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Farnhamville
Jolley
Knierim
Lake City
Lohrville
Lytton
Manson
Rinard
Rockwell City
Somers
Twin Lakes
Climate data from the nearest NOAA station, Rockwell City, Ia (11.8 mi from Pomeroy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.