Galveston, Texas Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Galveston weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——90°81°—
- SundayJul 5Overcast——90°80°0°
- MondayJul 6Partly Cloudy——91°78°+1°
- TuesdayJul 7Drizzle——91°77°0°
- WednesdayJul 8Clear——91°77°0°
- ThursdayJul 9Clear——91°79°0°
- FridayJul 10Clear——90°79°-1°
AQI 42 (Good), driven by PM2.5. AQI down 6 over the last 6 hours (gradual decline). PM2.5 at 5.4 µg/m³ (AQI 30) with a 0.63 fine-to-coarse ratio and 6 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 5.4 µg/m³ (AQI 30) with a 0.63 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.63
- 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
- 11:00 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Galveston at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: February 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 77550, 77551, 77554, 77555
16-Day Forecast — Galveston
- Sat90°81°2%
- Sun90°80°3%
- Mon91°78°4%
- Tue91°77°7%
- Wed91°77°1%
- Thu91°79°4%
- Fri90°79°4%
- Sat91°79°7%
- Sun91°79°21%
- Mon92°77°15%
- Tue96°77°11%
- Wed92°80°29%
- Thu87°78°24%
- Fri86°77°23%
- Sat90°81°26%
- Sun90°80°26%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Galveston
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 — Galveston
SPC includes Galveston 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.
Microseason · July 1–5
Cicadas claim the scorching afternoon
Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.
Day 185 of 365 · Wedge 37 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | lettuce, peas, spinach, radishes | — |
| March | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| April | tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | — | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
August is Galveston's warmest stretch (~86°F) and January its coldest (~56°F); precipitation crests in September at 6.7 inches and ebbs in April to 2.1 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 56° | 4.3″ | 5 |
| February | 59° | 2.1″ | 3 |
| March | 65° | 3.0″ | 4 |
| April | 72° | 2.1″ | 3 |
| May | 78° | 3.0″ | 3 |
| June | 84° | 4.2″ | 6 |
| July | 86° | 3.4″ | 6 |
| August | 86° | 4.7″ | 5 |
| September | 82° | 6.7″ | 7 |
| October | 75° | 5.2″ | 5 |
| November | 66° | 4.3″ | 5 |
| December | 59° | 4.2″ | 5 |
Regional context
Drawing on NOAA NCEI 1991-2020 normals, Galveston's January averages 56°F and July 86°F — 30°F apart — while precipitation totals roughly 47.2 inches over some 56 days.
Galveston's precipitation spreads evenly: September peaks at 6.7 inches on 6.9 wet days, while April holds 2.1 inches over 3.2 — no month dominates Galveston's rain calendar. That even rhythm groups Galveston with places like Tiki Island, TX, Bayou Vista, TX and Jamaica Beach, TX.
Galveston rarely sees a hard freeze — its coldest month sits near 56°F — so planting spans most of the calendar. Heat peaks in August around 86°F, which confines cool-season crops to the shoulders of summer. Galveston's coastal lots stay 4-7°F milder overnight than Galveston's inland parcels.
Similar climates: Tiki Island, TX, Bayou Vista, TX, Jamaica Beach, TX, Hitchcock, TX, La Marque, TX.
Naturalist notes
Ruby-throated Hummingbird migration peaks in late April as these tiny travelers return from Central American wintering grounds.
Southern Magnolia trees begin their flowering cycle in May, producing large white blooms that perfume the coastal air.
Frequently asked
- When does it freeze in Galveston?
- In Galveston, expect the last spring frost near mid-February; Galveston's first autumn frost comes around mid-December.
- What is the rainy season in Galveston?
- Galveston sees its heaviest rain in September (around 6.7 inches), part of roughly 47 inches a year.
- What is the warmest month in Galveston?
- Galveston peaks in August, when the mean runs near 86°F.
- What is the coldest month in Galveston?
- January is Galveston's coldest month, averaging about 56°F.
- When can I start a vegetable garden in Galveston?
- Around mid-February, start frost-hardy crops in Galveston; tomatoes and basil belong a fortnight later.
- How many rainy days does Galveston get?
- Expect roughly 56 wet days a year in Galveston.
- What hardiness zone is Galveston?
- Because Galveston bottoms near 56°F in January, that winter low sets Galveston's USDA zone — verify by ZIP.
- What is the 10-day forecast for Galveston?
- Galveston'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 Galveston?
- See this week's day-by-day rain chances for Galveston in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Galveston?
- Current conditions for Galveston and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Galveston forecast updated?
- The Galveston forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Galveston?
- Today's sunrise and sunset times for Galveston 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 Galveston?
- The next few days in Galveston's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
In Galveston, Texas, the humid subtropical climate runs from about 56°F in January to 86°F in July, a 30°F seasonal range.
Rain and snow bring Galveston roughly 47 inches a year across approximately 56 measurable-precipitation days.
From 29.2°N, Galveston sees a 30°F seasonal swing that governs Galveston's planting and frost windows.
ZIP codes in Galveston
- 77551
- 77550
- 77555
- 77554
- 77552
- 77553