Caledonia, Minnesota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Caledonia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Foggy16%—81°66°—
- SundayJul 5Overcast27%—79°66°-2°
- MondayJul 6Light Drizzle12%—79°63°0°
- TuesdayJul 7Light Drizzle——80°63°+1°
- WednesdayJul 8T-storm w/ Hail46%0.02″78°64°-2°
- ThursdayJul 9Showers46%—76°64°-2°
- FridayJul 10Overcast——77°61°+1°
AQI 37 (Good), driven by PM2.5. AQI up 9 over the last 6 hours (gradual rise). PM2.5 at 9.0 µg/m³, PM10 at 11.4 µg/m³ — typical background levels with no transport signature.
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 36. Overcast through the UV peak window (cloud cover ~83%) — afternoon ozone should stay flat.
- Present
- AQI 36
- UV peak
- 4.7 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5 at 9.0 µg/m³, PM10 at 11.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.79
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:06 PM
- Moonset
- 10:08 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Caledonia at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: May 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 55921
16-Day Forecast — Caledonia
- Sat81°66°16%
- Sun79°66°27%
- Mon79°63°12%
- Tue80°63°9%
- Wed78°64°46%
- Thu76°64°46%
- Fri77°61°9%
- Sat79°61°9%
- Sun70°56°10%
- Mon74°51°8%
- Tue77°59°6%
- Wed75°61°20%
- Thu79°66°19%
- Fri81°66°23%
- Sat84°68°23%
- Sun82°69°26%
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 — Caledonia
SPC includes Caledonia in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- 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 Caledonia
- 55921