San Leon, Texas Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
San Leon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——89°78°—
- SundayJul 5Overcast——91°78°+2°
- MondayJul 6Mostly Clear11%—93°77°+2°
- TuesdayJul 7Heavy Drizzle——94°77°+1°
- WednesdayJul 8Clear——93°77°-1°
- ThursdayJul 9Clear——94°78°+1°
- FridayJul 10Mostly Clear——92°78°-2°
AQI 52 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.0 µg/m³ (AQI 44) with a 0.72 fine-to-coarse ratio and 5 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 8.0 µg/m³ (AQI 44) with a 0.72 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.72
- Wind
- light
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:01 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
San Leon at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: February 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — San Leon
- Sat89°78°3%
- Sun91°78°6%
- Mon93°77°11%
- Tue94°77°8%
- Wed93°77°2%
- Thu94°78°2%
- Fri92°78°5%
- Sat93°78°8%
- Sun93°78°16%
- Mon95°77°15%
- Tue98°77°11%
- Wed96°79°29%
- Thu88°79°24%
- Fri87°76°23%
- Sat91°81°26%
- Sun91°80°26%
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 — San Leon
SPC includes San Leon 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 San Leon
- 77539