Guernsey, IA Weather & Growing Conditions
Overnight
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. Low around 67, with temperatures rising to around 69 overnight. Southeast wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Chance Showers And Thunderstorms | 7 mph SE | 42% |
| Saturday | 82°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 8 mph SSW | 56% |
| Saturday Night | 62°F | Showers And Thunderstorms Likely | 5 to 8 mph NNW | 60% |
| Sunday | 68°F | Chance Rain Showers | 8 to 13 mph NNE | 55% |
| Sunday Night | 55°F | Chance Rain Showers | 13 mph NE | 54% |
| Monday | 62°F | Chance Rain Showers | 13 mph NE | 54% |
| Monday Night | 50°F | Chance Rain Showers | 10 mph NE | 51% |
| Tuesday | 61°F | Chance Rain Showers then Partly Sunny | 9 mph NE | 29% |
| Tuesday Night | 45°F | Mostly Clear | 3 to 7 mph NE | 4% |
| Wednesday | 65°F | Sunny | 6 mph NE | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 3 mph ENE | 2% |
| Thursday | 66°F | Partly Sunny | 5 mph E | 9% |
| Thursday Night | 53°F | Partly Cloudy | 2 mph E | 6% |
| Friday | 69°F | Partly Sunny | 5 mph E | 6% |
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 Sep 19, 2026.