Guernsey, IA Weather & Growing Conditions
Today
85°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3pm. Partly sunny. High near 85, with temperatures falling to around 82 in the afternoon. West southwest wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 7 mph WSW | 23% |
| Tonight | 62°F | Showers And Thunderstorms | 7 mph NNE | 89% |
| Wednesday | 75°F | Showers And Thunderstorms Likely | 5 mph NNE | 74% |
| Wednesday Night | 56°F | Chance Showers And Thunderstorms | 5 mph NNE | 46% |
| Thursday | 81°F | Sunny | 2 mph NE | 10% |
| Thursday Night | 59°F | Mostly Clear | 1 mph ENE | 0% |
| Friday | 84°F | Sunny | 0 to 5 mph SSE | 5% |
| Friday Night | 64°F | Mostly Clear | 5 mph SSE | 14% |
| Saturday | 88°F | Sunny then Slight Chance Rain Showers | 6 mph S | 15% |
| Saturday Night | 70°F | Slight Chance Rain Showers then Mostly Clear | 6 to 9 mph S | 15% |
| Sunday | 89°F | Mostly Sunny | 10 mph S | 14% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 8 mph S | 34% |
| Monday | 88°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 7 to 10 mph SSW | 34% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 10 mph ESE | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Guernsey, IA
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5b
Explore more for Guernsey, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Belle Plaine, Ia (16.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.