Potosi, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Potosi weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain40%0.92″93°70°—
- SundayJul 5Overcast42%—85°69°-8°
- MondayJul 6Partly Cloudy29%—88°67°+3°
- TuesdayJul 7Clear14%—89°63°+1°
- WednesdayJul 8Overcast14%—96°65°+7°
- ThursdayJul 9Light Drizzle18%—97°74°+1°
- FridayJul 10Light Drizzle41%—98°75°+1°
AQI 38 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.5 µg/m³, PM10 at 10.4 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 40. Overcast through the UV peak window (cloud cover ~85%) — afternoon ozone should stay flat.
- Present
- AQI 40
- UV peak
- 5.8 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 9.5 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- 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
- 10:55 PM
- Moonset
- 10:11 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Potosi at a glance
- Today vs. normal: 17°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.
ZIP code: 63664
16-Day Forecast — Potosi
- Sat93°70°40%
- Sun85°69°42%
- Mon88°67°29%
- Tue89°63°14%
- Wed96°65°14%
- Thu97°74°18%
- Fri98°75°41%
- Sat86°65°21%
- Sun83°61°8%
- Mon83°57°6%
- Tue83°58°8%
- Wed89°60°14%
- Thu91°64°14%
- Fri91°69°6%
- Sat79°68°16%
- Sun77°66°14%
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 — Potosi
SPC has placed Potosi 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 Potosi
- 63664
- 63660