Weather StoryAlmanac, microseasons, and the day's weather story.

Los Altos, Texas Weather

Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →

Los Altos weather forecast — hour by hour, 7-day outlook, NOAA radar

Los Altos, TX
Saturday, July 4 at 11:39 PM
87
°
Mostly Clear
Feels like
90°
Humidity
66%
Wind
15 mph
Sunrise
1:47 AM
Sunset
3:36 PM
Los Altos, TX
Hour by hour · 24h
24-Hour ForecastLos Altos, TX: 24-hour forecast. Temperatures range from 79 to 100 degrees Fahrenheit.
L 79°H 100°
Los Altos, TX
7-day forecast
  1. Today
    Jul 4
    Clear
    —
    —
    100°78°—
  2. Sunday
    Jul 5
    Overcast
    —
    —
    100°79°0°
  3. Monday
    Jul 6
    Overcast
    —
    —
    99°77°-1°
  4. Tuesday
    Jul 7
    Overcast
    —
    —
    102°77°+3°
  5. Wednesday
    Jul 8
    Partly Cloudy
    —
    —
    103°76°+1°
  6. Thursday
    Jul 9
    Clear
    —
    —
    103°78°0°
  7. Friday
    Jul 10
    Mostly Clear
    —
    —
    102°77°-1°
Los Altos, TX
Next 24 hours · Warm now
HOT 90°74°89°104°6p12a6a12pnow 87°high 100°low 79°
Los Altos, TX
Anemometer · 24h winds · from true
NESW
From · True
SE
130° · backing 7°
Direction
SE
130°
Sustained
15
mph
Gust
28
mph
Peak 24h
29
avg 12
Beaufort · 4 · MOD BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 12 · pk 29 @ 12:00a
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 2916SUSTGUST
−24h−18h−12h−6hnow
Sustained 15 mph with gusts pulsing to 28 — flags snap, branches bend.
Los Altos, TX
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
993.9
+1.9 mb in 3h · rising · 29.35 inHg
Now
993.9
mb
3h
+1.9
mb
12h
-2.2
mb
24h
-2.1
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 992–997
9859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW996.6991.8993.7
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Los Altos, TX
Air quality
30
AQI
Good
→+2 in 6h

AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.6 µg/m³ (AQI 31), ratio 0.66 with 15 mph wind — characteristic of long-range haze transport rather than a local source.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
5.6μg/m³
PM 10Good
9μg/m³
NO₂Good
2μg/m³
OzoneGood
45μg/m³
UV IndexLow
0.0

What's driving it

PM × Wind × Precip

PM2.5 at 5.6 µg/m³ (AQI 31), ratio 0.66 with 15 mph wind — characteristic of long-range haze transport rather than a local source.

PM2.5/PM10
0.66
Wind
breezy
Recent rain
0h in last 6h
Pattern
transport

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).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³320
Los Altos, TX
Sky cover · visibility · 24h
Cloud cover
20%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
54.2mi
UNLIMITED
117 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
04:39 UTC · Los Altos, TX · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
04:39 UTC · Los Altos, TX · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Los Altos, TX
Satellite · infrared · animated
Los Altos, TX
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Los Altos, TX
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
6:21 AM
Sunrise
1:47 AM
Daylight
13h 49m
Sunset
3:36 PM
Civil dusk
9:04 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Los Altos, TX
The moon
Waning Gibbous
76% illuminated
Moonrise
11:49 PM
Moonset
11:55 AM
In sign
♓︎ Pisces
Los Altos, TX
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Los Altos at a glance

  • Today vs. normal: 3°F above the seasonal normal for this latitude
  • Last frost: January 31 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Los Altos

  1. Sat100°78°0%
  2. Sun100°79°2%
  3. Mon99°77°2%
  4. Tue102°77°5%
  5. Wed103°76°5%
  6. Thu103°78°4%
  7. Fri102°77°6%
  8. Sat99°77°24%
  9. Sun98°77°18%
  10. Mon96°76°17%
  11. Tue102°74°18%
  12. Wed101°74°9%
  13. Thu102°75°3%
  14. Fri104°77°10%
  15. Sat103°76°11%
  16. Sun102°75°16%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 5, 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.

January 1–5: Frost quiets the live oaks.January 6–10: Still water thickens with ice.January 11–15: Springs begin to move beneath ice.January 16–20: Cardinal dawn calls grow bolder.January 21–25: Late January thaw pulses.January 26–31: Last freeze locks the land.February 1–5: February's lengthening light.February 6–10: Warming winds thaw the margin.February 11–15: Magnolia blooms break the gray.February 16–20: Mockingbirds resume the dawn chorus.February 21–25: Rain replaces the last snow.February 26–28: Mist clings to greening valleys.March 1–5: The green pulse awakens.March 6–10: Hibernators emerge to call.March 11–15: Dogwood and redbud ignite.March 16–20: Swallowtails emerge from winter silk.March 21–25: Light crowns the dogwood canopy.March 26–31: Redbud cascades over the thaw.April 1–5: Thunder announces the wet season.April 6–10: Barn swallows carve the warming sky.April 11–15: Magnolia blooms and falls in a breath.April 16–20: First rainbows arch over thunderheads.April 21–25: Reeds push through marsh water.April 26–30: Frost retreats; seedlings rise free.May 1–5: Warblers flood the canopy in waves.May 6–10: Tulip poplar lights the forest crown.May 11–15: Shad pulse upstream through rapids.May 16–20: Roses open on the Piedmont edge.May 21–25: Fireflies scout the humid dusk.May 26–31: Frog choruses rise from every wetland.June 1–5: Fireflies pulse through the magnolias.June 6–10: Kudzu climbs deeper into green.June 11–15: Sun climbs to its northern throne.June 16–20: Heat settles and the rain begins.June 21–25: The longest day turns toward shadow.June 26–30: Fireflies drift through Spanish moss.July 1–5: Cicadas claim the scorching afternoon.July 6–10: Thunderheads boil and break at dusk.July 11–15: Thunder builds each drowsy afternoon.July 16–20: Cicadas claim the long noon.July 21–25: Dog days drape the earth in haze.July 26–31: Katydids begin their rasping chorus.August 1–5: Dusk arrives one minute earlier each night.August 6–10: Meteorological summer's turning page.August 11–15: Cool winds gather at the margins.August 16–20: Dog-day cicadas rise.August 21–25: Heat breaks in creek beds.August 26–31: Monarchs gather strength.September 1–5: Harvests begin in earnest.September 6–10: Dew beads on resurrection fern.September 11–15: Raptors trail the thermals.September 16–20: Day and dark find balance.September 21–25: Thunder quiets the land.September 26–30: Insects retreat below.October 1–5: Swamp waters recede.October 6–10: Maples ignite the ridge.October 11–15: Asters crown the meadows.October 16–20: Crickets sing at dusk.October 21–25: Frost paints the garden.October 26–31: Light rains whisper down.November 1–5: Sweetgum Turns Crimson.November 6–10: Camellia Blooms Break Through.November 11–15: Earth Stiffens Underfoot.November 16–20: Bare Limbs Hold the Light.November 21–25: First Frost Grips the High Ground.November 26–30: North Wind Strips the Last Leaves.December 1–5: Darkness Falls Before Dinner.December 6–10: Winter Locks the Land.December 11–15: Wildlife Retreats to Shelter.December 16–20: Ice Edges Deepen Inward.December 21–25: The Sun Begins its Return.December 26–31: The Year Turns in Silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

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 186 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
Februarylettuce, peas, spinach, radishes—
Marchlettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Apriltomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
June—lettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall brassicas, garlic (overwinter), carrots—
December——

A year in weather

Los Altos peaks at about 89°F in August and bottoms near 58°F in January; September brings the heaviest rain (3.9 inches) and February the least (0.7 inches).

MonthMean tempPrecipRainy days
January58°0.8″2
February63°0.7″2
March70°1.3″2
April77°1.3″2
May83°2.8″3
June88°1.8″3
July89°1.9″3
August89°1.6″3
September84°3.9″5
October77°1.7″2
November66°1.0″2
December59°1.1″2

Frequently asked

When does it freeze in Los Altos?
Frost typically leaves Los Altos by mid-February and returns to Los Altos near mid-December.
What is the rainy season in Los Altos?
Rainfall in Los Altos peaks in September near 3.9 inches, out of about 20 inches annually.
What is the warmest month in Los Altos?
Los Altos peaks in August, when the mean runs near 89°F.
What is the coldest month in Los Altos?
January is Los Altos's coldest month, averaging about 58°F.
When can I start a vegetable garden in Los Altos?
Around mid-February, start frost-hardy crops in Los Altos; tomatoes and basil belong a fortnight later.
How many rainy days does Los Altos get?
Expect roughly 30 wet days a year in Los Altos.
What hardiness zone is Los Altos?
With January around 58°F, Los Altos's zone reflects that minimum — the USDA ZIP map confirms Los Altos's band.
What is the 10-day forecast for Los Altos?
Los Altos'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 Los Altos?
See this week's day-by-day rain chances for Los Altos in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Los Altos?
Current conditions for Los Altos and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Los Altos forecast updated?
The Los Altos forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Los Altos?
Today's sunrise and sunset times for Los Altos 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 Los Altos?
The next few days in Los Altos's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Los Altos, Texas, the humid subtropical climate runs from about 58°F in January to 89°F in July, a 31°F seasonal range.

Los Altos sees close to 20 inches of precipitation annually, falling across some 30 wet days.

From 27.5°N, Los Altos sees a 31°F seasonal swing that governs Los Altos's planting and frost windows.

All cities in Texas →

Laredo, TX weather →

ZIP codes in Los Altos

  • 78043

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.