Fairfax, IA Weather & Growing Conditions
Today
84°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny. High near 84, with temperatures falling to around 81 in the afternoon. West wind 5 to 10 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph W | 41% |
| Tonight | 64°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 83% |
| Wednesday | 76°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph N | 72% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 5 mph N | 36% |
| Thursday | 81°F | Slight Chance Rain Showers then Mostly Sunny | 5 mph NE | 22% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 2% |
| Friday | 83°F | Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 65°F | Mostly Clear | 5 mph S | 11% |
| Saturday | 86°F | Sunny | 5 to 10 mph S | 9% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 10 mph S | 15% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph S | 15% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 37% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 mph S | 37% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 10 mph SE | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairfax, IA
Last spring frost
Apr 27
First fall frost
Oct 11
Growing season
165 days
Hardiness zone
5a
Explore more for Fairfax, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Cedar Rapids Muni Ap, Ia (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.