Fairfax, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfax, a city in Linn County, Iowa.
Overnight
50°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Cloudy. Low around 50, with temperatures rising to around 52 overnight. Southwest wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Fairfax
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Slight Chance Rain Showers | 10 mph SW | 21% |
| Wednesday | 52°F | Chance Rain Showers | 10 to 15 mph W | 29% |
| Wednesday Night | 44°F | Slight Chance Rain Showers | 10 to 15 mph W | 20% |
| Thursday | 54°F | Chance Rain Showers | 10 mph W | 32% |
| Thursday Night | 39°F | Mostly Cloudy | 5 to 10 mph N | 13% |
| Friday | 49°F | Mostly Sunny | 5 to 10 mph N | 3% |
| Friday Night | 30°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 1% |
| Sunday | 57°F | Sunny | 5 mph W | 3% |
| Sunday Night | 36°F | Clear | 5 mph SW | 0% |
| Monday | 63°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 62°F | Sunny | 5 mph NW | 0% |
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
Cedar Rapids
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Central City
Coggon
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 Nov 4, 2026.