Pomeroy, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pomeroy, a city in Calhoun County, Iowa.
Overnight
65°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms. Cloudy. Low around 65, with temperatures rising to around 67 overnight. East northeast wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Pomeroy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Patchy Fog | 6 mph ENE | 43% |
| Saturday | 75°F | Patchy Fog | 3 to 7 mph NNW | 47% |
| Saturday Night | 58°F | Slight Chance Rain Showers | 7 to 10 mph NNE | 18% |
| Sunday | 67°F | Chance Rain Showers | 9 to 13 mph NE | 24% |
| Sunday Night | 54°F | Rain Showers Likely | 9 mph ENE | 48% |
| Monday | 61°F | Rain Showers Likely | 6 to 9 mph ENE | 62% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 6 mph ENE | 56% |
| Tuesday | 62°F | Partly Sunny | 5 mph ENE | 11% |
| Tuesday Night | 44°F | Partly Cloudy | 2 mph ESE | 2% |
| Wednesday | 66°F | Mostly Sunny | 3 mph ESE | 4% |
| Wednesday Night | 49°F | Partly Cloudy | 1 mph SE | 15% |
| Thursday | 68°F | Slight Chance Rain Showers | 3 mph SE | 22% |
| Thursday Night | 53°F | Mostly Cloudy | 1 mph SE | 15% |
| Friday | 70°F | Partly Sunny | 1 to 5 mph SE | 15% |
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 19, 2026.