Marathon, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Marathon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Drizzle28%—85°64°—
- MondayJul 6Overcast21%—87°66°+2°
- TuesdayJul 7Light Drizzle21%—87°68°0°
- WednesdayJul 8Thunderstorm28%—87°69°0°
- ThursdayJul 9Overcast27%—77°66°-10°
- FridayJul 10Overcast——78°64°+1°
- SaturdayJul 11Overcast——85°66°+7°
AQI 25 (Good), driven by PM2.5. AQI down 15 over the last 6 hours — air quality is improving sharply.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:41 PM
- Moonset
- 11:32 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Marathon at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: May 3 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 50565
16-Day Forecast — Marathon
- Sun85°64°28%
- Mon87°66°21%
- Tue87°68°21%
- Wed87°69°28%
- Thu77°66°27%
- Fri78°64°8%
- Sat85°66°7%
- Sun92°68°4%
- Mon105°75°4%
- Tue90°64°9%
- Wed77°61°8%
- Thu84°60°19%
- Fri88°68°14%
- Sat88°72°20%
- Sun90°69°13%
- Mon98°68°16%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Marathon
SPC includes Marathon in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Marathon
- 50565