Marietta, Minnesota Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
Marietta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Showers51%0.27″85°63°—
- ThursdayJun 4Light Snow63%4.8″82°63°-3°
- FridayJun 5Heavy Rain28%0.74″79°62°-3°
- SaturdayJun 6Partly Cloudy——85°62°+6°
- SundayJun 7Overcast17%—91°64°+6°
- MondayJun 8Light Showers54%0.01″85°68°-6°
- TuesdayJun 9Partly Cloudy19%—93°66°+8°
Ozone at AQI 500. AQI up 18 in the last 6 hours — air quality is degrading. Overcast through the UV peak window (cloud cover ~74%) — afternoon ozone should stay flat.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500. Overcast through the UV peak window (cloud cover ~74%) — afternoon ozone should stay flat.
- Present
- AQI 500
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 60
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 6.2 µg/m³, PM10 to 7.2 µg/m³.
- PM2.5/PM10
- 0.86
- Wind
- calm
- Recent rain
- 3h 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:13 AM
- Moonset
- 2:11 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Marietta at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: May 16 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight Risk
- DAY 3MRGLMarginal Risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.