Lake St. Croix Beach, Minnesota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Lake St. Croix Beach weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain21%1.1″85°66°—
- SundayJul 5Rain19%0.15″85°67°0°
- MondayJul 6Overcast——85°66°0°
- TuesdayJul 7Thunderstorm11%0.02″87°66°+2°
- WednesdayJul 8Showers55%0.67″74°62°-13°
- ThursdayJul 9Overcast55%—80°59°+6°
- FridayJul 10Light Drizzle——76°58°-4°
AQI 49 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 13.2 µg/m³ (AQI 59) with a 0.75 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
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 47 now. With UV 6.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 41 around 1 PM.
- Present
- AQI 47
- UV peak
- 6.5 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 41
PM × Wind × Precip
PM2.5 at 13.2 µg/m³ (AQI 59) with a 0.75 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.75
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 11:13 PM
- Moonset
- 10:11 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Lake St. Croix Beach at a glance
- Today vs. normal: 12°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.
16-Day Forecast — Lake St. Croix Beach
- Sat85°66°21%
- Sun85°67°19%
- Mon85°66°4%
- Tue87°66°11%
- Wed74°62°55%
- Thu80°59°55%
- Fri76°58°8%
- Sat78°55°11%
- Sun80°57°17%
- Mon82°57°7%
- Tue84°62°5%
- Wed84°67°13%
- Thu83°68°11%
- Fri78°64°16%
- Sat70°61°26%
- Sun82°58°29%
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 — Lake St. Croix Beach
SPC includes Lake St. Croix Beach 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 Lake St. Croix Beach
- 55043