Fairfield, IA Weather & Growing Conditions
Today
88°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Mostly sunny. High near 88, with temperatures falling to around 86 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 21% |
| Tonight | 66°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 55% |
| Wednesday | 79°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph NE | 81% |
| Wednesday Night | 61°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 66% |
| Thursday | 81°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph NE | 50% |
| Thursday Night | 61°F | Mostly Clear | 0 to 5 mph E | 4% |
| Friday | 84°F | Sunny | 0 to 5 mph SE | 7% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 mph S | 15% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph S | 15% |
| Saturday Night | 71°F | Mostly Clear | 5 to 10 mph S | 9% |
| Sunday | 90°F | Sunny | 10 to 15 mph SW | 9% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 mph S | 22% |
| Monday | 90°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 22% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph S | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairfield, IA
Last spring frost
Apr 27
First fall frost
Oct 12
Growing season
168 days
Hardiness zone
5b
Explore more for Fairfield, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Fairfield, Ia (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.