St. James, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
St. James weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast30%—93°71°—
- SundayJul 5Overcast41%—89°68°-4°
- MondayJul 6Partly Cloudy16%—87°67°-2°
- TuesdayJul 7Clear——88°63°+1°
- WednesdayJul 8Mostly Clear11%—94°66°+6°
- ThursdayJul 9Overcast18%—94°73°0°
- FridayJul 10Overcast45%—94°74°0°
AQI 48 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.7 µg/m³, PM10 at 11.6 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 43 now. With UV 7.4 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 30 around 1 PM.
- Present
- AQI 43
- UV peak
- 7.4 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 30
PM × Wind × Precip
PM2.5 at 9.7 µg/m³, PM10 at 11.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.84
- 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
- 10:58 PM
- Moonset
- 10:14 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
St. James at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: April 4 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. James
- Sat93°71°30%
- Sun89°68°41%
- Mon87°67°16%
- Tue88°63°9%
- Wed94°66°11%
- Thu94°73°18%
- Fri94°74°45%
- Sat82°65°20%
- Sun82°59°8%
- Mon82°58°7%
- Tue83°58°6%
- Wed87°59°9%
- Thu90°63°13%
- Fri89°68°10%
- Sat79°66°16%
- Sun78°65°13%
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 — St. James
SPC has placed St. James in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in St. James
- 65559