Fairfax, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfax, a city in Linn County, Iowa.
Today
81°F
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 11am, then a chance of showers and thunderstorms between 11am and 1pm, then a chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 81. South wind around 10 mph. Chance of precipitation is 60%.
7-day forecast for Fairfax
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 10 mph S | 64% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph NW | 69% |
| Sunday | 68°F | Rain Showers Likely | 10 to 15 mph NE | 59% |
| Sunday Night | 56°F | Chance Rain Showers | 10 to 15 mph NE | 53% |
| Monday | 63°F | Chance Rain Showers | 15 mph NE | 53% |
| Monday Night | 51°F | Chance Rain Showers | 10 mph NE | 42% |
| Tuesday | 61°F | Chance Rain Showers then Partly Sunny | 10 mph NE | 27% |
| Tuesday Night | 47°F | Mostly Clear | 5 to 10 mph NE | 5% |
| Wednesday | 66°F | Sunny | 5 mph NE | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 5 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 5 mph NE | 8% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 5 mph E | 5% |
| Friday | 69°F | Mostly Sunny | 5 mph E | 6% |
| Friday Night | 54°F | Partly Cloudy | 5 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov) for Fairfax (41.925, -91.778). Updated through the day.
Growing snapshot for Fairfax
Last spring frost
Apr 27
First fall frost
Oct 11
Growing season
165 days
Hardiness zone
5a
More local growing data for Fairfax: nearby ZIP 52228 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Alburnett
Bertram
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Ely
Hiawatha
Marion
Mount Vernon
Palo
Prairieburg
Robins
Springville
Walker
Climate data from the nearest NOAA station, Cedar Rapids Muni Ap, Ia (3.9 mi from Fairfax). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.