Saint Catharine, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Saint Catharine weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle27%0.02″86°69°—
- SundayJul 5Rain26%0.11″86°70°0°
- MondayJul 6Overcast12%—84°67°-2°
- TuesdayJul 7Clear——84°65°0°
- WednesdayJul 8Overcast——88°65°+4°
- ThursdayJul 9Thunderstorm37%—84°71°-4°
- FridayJul 10Light Drizzle37%—84°68°0°
AQI 41 (Good), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 9.7 µg/m³, PM10 at 12.9 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 50 now. With UV 7.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 34 around 1 PM.
- Present
- AQI 50
- UV peak
- 7.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 34
PM × Wind × Precip
PM2.5 at 9.7 µg/m³, PM10 at 12.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.75
- Wind
- breezy
- 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
- 10:18 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Saint Catharine at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Saint Catharine
- Sat86°69°27%
- Sun86°70°26%
- Mon84°67°12%
- Tue84°65°2%
- Wed88°65°8%
- Thu84°71°37%
- Fri84°68°37%
- Sat78°63°14%
- Sun79°60°6%
- Mon80°58°4%
- Tue79°59°8%
- Wed83°58°12%
- Thu84°63°16%
- Fri84°70°10%
- Sat86°70°13%
- Sun78°61°11%
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 — Saint Catharine
SPC includes Saint Catharine 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 Saint Catharine
- 64628