St. Marys, Kansas Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
St. Marys weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Clear——79°53°—
- TuesdayJun 16Overcast33%—84°61°+5°
- WednesdayJun 17T-storm w/ Hail14%—95°66°+11°
- ThursdayJun 18Overcast——77°62°-18°
- FridayJun 19Overcast——81°58°+4°
- SaturdayJun 20T-storm w/ Hail44%0.04″79°65°-2°
- SundayJun 21Showers64%0.61″76°66°-3°
AQI 35 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline). PM2.5 at 5.0 µg/m³ (AQI 28) with a 1.00 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
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 5.0 µg/m³ (AQI 28) with a 1.00 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 1.00
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:01 AM
- Moonset
- 9:08 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
St. Marys at a glance
- Today vs. normal: 18°F below the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — St. Marys
- Mon79°53°2%
- Tue84°61°33%
- Wed95°66°14%
- Thu77°62°9%
- Fri81°58°4%
- Sat79°65°44%
- Sun76°66°64%
- Mon74°64°46%
- Tue68°62°11%
- Wed79°64°16%
- Thu90°71°19%
- Fri90°76°24%
- Sat92°76°30%
- Sun81°70°26%
- Mon83°63°23%
- Tue88°68°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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. Marys
SPC has placed St. Marys in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3SLGTSlight Risk
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. Marys
- 66536