St. John, Kansas Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
St. John weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast17%—90°70°—
- SundayJul 5Overcast14%—90°66°0°
- MondayJul 6Partly Cloudy——91°70°+1°
- TuesdayJul 7Partly Cloudy——94°73°+3°
- WednesdayJul 8Light Drizzle11%—103°77°+9°
- ThursdayJul 9Light Drizzle19%—94°72°-9°
- FridayJul 10Partly Cloudy18%—102°74°+8°
AQI 32 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 8.4 µg/m³, PM10 at 10.3 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
PM × Wind × Precip
PM2.5 at 8.4 µg/m³, PM10 at 10.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.82
- 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
- 11:28 PM
- Moonset
- 10:45 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
St. John at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 4 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — St. John
- Sat90°70°17%
- Sun90°66°14%
- Mon91°70°4%
- Tue94°73°6%
- Wed103°77°11%
- Thu94°72°19%
- Fri102°74°18%
- Sat104°75°11%
- Sun112°77°5%
- Mon107°84°6%
- Tue99°73°4%
- Wed109°71°6%
- Thu114°81°16%
- Fri106°80°19%
- Sat94°72°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 — St. John
SPC has placed St. John 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. John
- 67576