Pomeroy, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pomeroy, a city in Calhoun County, Iowa.
Today
76°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 76, with temperatures falling to around 71 in the afternoon. North northwest wind 6 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Pomeroy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Showers And Thunderstorms Likely | 6 to 9 mph NNW | 69% |
| Tonight | 57°F | Chance Showers And Thunderstorms | 1 to 5 mph N | 54% |
| Wednesday | 75°F | Partly Sunny | 2 mph NE | 6% |
| Wednesday Night | 53°F | Mostly Clear | 1 mph SE | 2% |
| Thursday | 81°F | Sunny | 0 to 5 mph S | 1% |
| Thursday Night | 60°F | Mostly Clear | 5 mph S | 3% |
| Friday | 86°F | Sunny | 2 to 9 mph S | 7% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 15% |
| Saturday | 89°F | Sunny | 2 to 12 mph S | 12% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 7 to 10 mph SE | 21% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 7 to 10 mph SE | 21% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 8 mph SSE | 30% |
| Monday | 88°F | Chance Showers And Thunderstorms then Partly Sunny | 7 to 12 mph SE | 30% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 8 to 12 mph ENE | 31% |
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 Aug 4, 2026.