Marietta, Minnesota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Marietta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain23%1.2″86°63°—
- SundayJul 5Overcast——86°63°0°
- MondayJul 6Light Drizzle47%—94°65°+8°
- TuesdayJul 7Showers49%0.07″94°65°0°
- WednesdayJul 8Showers75%0.19″81°66°-13°
- ThursdayJul 9Light Drizzle16%0.01″81°60°0°
- FridayJul 10Light Drizzle16%—74°62°-7°
AQI 48 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM scrubbed by 2 hours of recent rain — PM2.5 down to 10.0 µg/m³, PM10 to 12.2 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 49 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 49
- UV peak
- 3.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 49
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 10.0 µg/m³, PM10 to 12.2 µg/m³.
- PM2.5/PM10
- 0.82
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 11:29 PM
- Moonset
- 10:26 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Marietta at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: May 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 56257
16-Day Forecast — Marietta
- Sat86°63°23%
- Sun86°63°2%
- Mon94°65°47%
- Tue94°65°49%
- Wed81°66°75%
- Thu81°60°16%
- Fri74°62°16%
- Sat81°58°14%
- Sun84°59°11%
- Mon88°62°7%
- Tue93°66°10%
- Wed97°69°11%
- Thu93°74°14%
- Fri83°64°20%
- Sat76°62°10%
- Sun88°58°18%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Marietta
SPC has placed Marietta in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Marietta
- 56257