Lewiston, Minnesota Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
Lewiston weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Rain70%0.17″82°59°—
- FridayJun 5Overcast25%—81°61°-1°
- SaturdayJun 6Clear10%—81°59°0°
- SundayJun 7Light Showers23%—78°62°-3°
- MondayJun 8Light Showers62%0.23″72°61°-6°
- TuesdayJun 9Light Drizzle42%0.04″74°66°+2°
- WednesdayJun 10Thunderstorm15%—84°64°+10°
Ozone at AQI 500 — peak already passed at 1 PM under partly cloudy skies. AQI up 12 over the last 6 hours (gradual rise). Levels should ease through evening.
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 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 500
- UV peak
- 0.8 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 500
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.8 µg/m³, PM10 to 11.3 µg/m³.
- PM2.5/PM10
- 0.87
- 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
- 4:51 AM
- Moonset
- 1:57 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Lewiston at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: May 10 (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 — Lewiston
SPC has placed Lewiston in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYMRGLMarginal Risk
- TOMORROWSLGTSlight Risk
- DAY 3NONENo severe 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.