Alpena, South Dakota Weather
Prairie lightning bugs rise. Day 76 of spring. Read this microseason across nine climate regions →
Alpena weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Heavy Rain55%0.61″84°62°—
- ThursdayJun 4Overcast38%—84°65°0°
- FridayJun 5Light Drizzle52%0.03″78°62°-6°
- SaturdayJun 6Clear——87°61°+9°
- SundayJun 7Overcast24%—88°64°+1°
- MondayJun 8Light Drizzle32%—86°67°-2°
- TuesdayJun 9Light Drizzle24%—87°65°+1°
Ozone at AQI 44 — peak already passed at 1 PM under clear skies. AQI up 9 over the last 6 hours (gradual rise). Levels should ease through evening.
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 44 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 44
- UV peak
- 0.6 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 44
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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:44 AM
- Moonset
- 1:16 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Alpena at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: May 11 (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 3, 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 — Alpena
SPC has placed Alpena 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.