Houston, Texas Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Houston weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 6:32 AM CDT · Open-Meteo
- TodaySep 21Clear later12%—96°78°—
- TuesdaySep 22Clear16%—96°76°0°
- WednesdaySep 23Overcast——98°82°+2°
- ThursdaySep 24Overcast——98°82°0°
- FridaySep 25Clear——97°79°-1°
- SaturdaySep 26Partly Cloudy——94°81°-3°
- SundaySep 27Overcast——96°80°+2°
Air quality now AQI 67 · Moderate
AQI 67 (Moderate), driven by PM2.5. AQI projected to climb to 86 over the next 6 hours. PM2.5 at 15.8 µg/m³ (AQI 63) with a 0.89 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 6 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 15.8 µg/m³ (AQI 63) with a 0.89 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.89
- 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:29 PM
- Moonset
- 2:13 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Houston at a glance
- Today vs. normal: Today averages 87°F (high 96°F, low 78°F), 9°F above the 78°F normal for Sep 21
- Last frost: February 2 (1991–2020 median, NOAA station 11 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant tomatoes, peppers, beans, squash; harvest beans, summer squash, winter squash
15-Day Forecast — Houston
- Mon96°78°12%
- Tue96°76°16%
- Wed98°82°6%
- Thu98°82°1%
- Fri97°79°4%
- Sat94°81°5%
- Sun96°80°7%
- Mon100°79°17%
- Tue98°73°35%
- Wed93°75°25%
- Thu92°76°17%
- Fri93°78°16%
- Sat94°78°23%
- Sun92°79°26%
- Mon90°78°27%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Houston
Interactive wind and temperature map centered on Houston — it loads in your browser. Open the full weather map.
Right now in the garden
Peak growing season
As of September 21, the growing season is at its peak — the first frost (around December 25) is weeks away. Fall transplants go in about 10–12 weeks before the first frost, October 2 to October 16 here. This city's planting calendar for September: plant tomatoes, peppers, beans, and squash; harvest beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Houston
SPC includes Houston in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Houston
Houston sits in Harris County, where the year’s longest day runs 14h 4m of daylight and its shortest just 10h 14m — a swing of +3h 50m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Houston is the state’s largest city. The nearest town Houston tracks is Pearland, roughly 16 miles to the SSE.
Air quality in Houston
Air quality in Houston’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 56). See the full air-quality history for Houston.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | fall brassicas, carrots |
| February | lettuce, peas, spinach, radishes | lettuce, spinach, radishes |
| March | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| April | tomatoes, peppers, beans, squash | lettuce, peas, spinach |
| May | squash | peas, tomatoes, peppers, beans, summer squash, garlic |
| June | squash | tomatoes, peppers, beans, summer squash, winter squash |
| July | beans, squash | tomatoes, peppers, summer squash, winter squash |
| August | tomatoes, peppers, beans, squash | summer squash, winter squash |
| September | tomatoes, peppers, beans, squash | beans, summer squash, winter squash |
| October | beans, squash, fall brassicas, carrots | beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| December | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
A year in weather
In Houston, July runs warmest near 84°F and January coldest around 53°F, while April is the wettest month (4.3 inches) and June the driest (2.7 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 53° | 3.5″ |
| February | 55° | 2.7″ |
| March | 62° | 3.4″ |
| April | 69° | 4.3″ |
| May | 76° | 3.5″ |
| June | 82° | 2.7″ |
| July | 84° | 3.2″ |
| August | 84° | 4.3″ |
| September | 80° | 3.5″ |
| October | 73° | 2.7″ |
| November | 62° | 3.9″ |
| December | 55° | 4.3″ |
Regional context
Similar climates West University Place, TX, Hilshire Village, TX, Southside Place, TX
Houston swings from 53°F in January to 84°F in July (31°F) per modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo); precipitation in Houston runs about 42 inches.
Rainfall in Houston splits evenly between the seasons: April tops out at 4.3 inches, and June logs 2.7 inches — neither half of Houston's year dominates. That lines Houston up with places like West University Place, TX, Hilshire Village, TX and Southside Place, TX, fed by overlapping storm tracks.
Around February 2, Houston sheds its freezing nights — lettuce, chard, arugula, and mustard greens go into Houston's beds. Tomatoes and peppers do best set out two weeks later in Houston, once nights clear the mid-40s°F. The season ends by December 25 in Houston, once hard frosts set back in. That date is a median: Houston freezes sooner in half of years.
Similar climates: West University Place, TX, Hilshire Village, TX, Southside Place, TX, Hunters Creek Village, TX, Spring Valley Village, TX.
Frequently asked
- When does it freeze in Houston?
- Houston's last spring frost lands near February 2, and in Houston the first fall frost follows around December 25.
- What is the rainy season in Houston?
- Rainfall in Houston peaks in April near 4.3 inches, out of about 42 inches annually.
- What is the warmest month in Houston?
- The warmest stretch in Houston comes in July, around 84°F on average.
- What is the coldest month in Houston?
- On average January is the chilliest month in Houston, about 53°F.
- When can I start a vegetable garden in Houston?
- Time tomatoes in Houston for two weeks after February 2; peas and greens start at Houston's frost line.
- What hardiness zone is Houston?
- Houston sits in the USDA zone set by January lows near 53°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Houston?
- Houston's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Houston?
- See this week's day-by-day rain chances for Houston in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Houston?
- Current conditions for Houston and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Houston forecast updated?
- The Houston forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Houston?
- Today's sunrise and sunset times for Houston are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Houston?
- The next few days in Houston's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Houston sits at 29.8°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Houston
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