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

McKinney, Texas Weather

Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →

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

McKinney, TX
Saturday, July 4 at 10:21 AM
90
°
Partly Cloudy
Feels like
95°
Humidity
59%
Wind
11 mph
Sunrise
1:22 AM
Sunset
3:39 PM
McKinney, TX
Hour by hour · 24h
24-Hour ForecastMcKinney, TX: 24-hour forecast. Temperatures range from 73 to 99 degrees Fahrenheit.
L 73°H 99°
McKinney, TX
7-day forecast
  1. Today
    Jul 4
    Overcast
    —
    —
    99°79°—
  2. Sunday
    Jul 5
    Overcast
    12%
    —
    98°73°-1°
  3. Monday
    Jul 6
    Heavy Showers
    12%
    0.78″
    97°73°-1°
  4. Tuesday
    Jul 7
    Light Drizzle
    —
    —
    99°74°+2°
  5. Wednesday
    Jul 8
    Mostly Clear
    —
    —
    103°77°+4°
  6. Thursday
    Jul 9
    Partly Cloudy
    —
    —
    106°79°+3°
  7. Friday
    Jul 10
    Clear
    —
    —
    103°81°-3°
McKinney, TX
Next 24 hours · Warm now
HOT 90°65°85°105°6a12p6p12anow 90°high 99°low 73°
McKinney, TX
Anemometer · 24h winds · from true
NESW
From · True
SW
229° · veering 20°
Direction
SW
229°
Sustained
11
mph
Gust
14
mph
Peak 24h
17
avg 7
Beaufort · 3 · GENTLE 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 7 · pk 17 @ 8:00a
010203040MPHB1B2B3B4B5B6B7B8-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 3413SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 20° from the sw.
McKinney, TX
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
995.6
+0.4 mb in 3h · steady · 29.40 inHg
Now
995.6
mb
3h
+0.4
mb
12h
+1.2
mb
24h
-1.6
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 994–998
9859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW997.6993.8995.6
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
McKinney, TX
Air quality
49
AQI
Good
→-2 in 6h

AQI 49 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.6 µg/m³, PM10 at 15.8 µg/m³ — typical background levels with no transport signature.

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

PM 2.5DRIVERGood
11.6μg/m³
PM 10Good
16μg/m³
NO₂Good
5μg/m³
OzoneModerate
72μg/m³
UV IndexModerate
4.5

What's driving it

Ozone × UV × Sky

Ozone at AQI 34 now. With UV 6.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 29 around 1 PM.

Present
AQI 34
UV peak
6.4 at 1 PM
Sky at peak
clear
Projected peak
AQI 29

PM × Wind × Precip

PM2.5 at 11.6 µg/m³, PM10 at 15.8 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.73
Wind
breezy
Recent rain
0h in last 6h
Pattern
background

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 TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³340
McKinney, TX
Sky cover · visibility · 24h
Cloud cover
52%
PARTLY CLOUDY
100%0%−24h−18h−12h−6hnow
Visibility
58.1mi
UNLIMITED
106 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
15:21 UTC · McKinney, 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
15:21 UTC · McKinney, TX · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
McKinney, TX
Satellite · infrared · animated
McKinney, TX
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
McKinney, TX
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:54 AM
Sunrise
1:22 AM
Daylight
14h 17m
Sunset
3:39 PM
Civil dusk
9:09 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
McKinney, TX
The moon
Waning Gibbous
81% illuminated
Moonrise
11:13 PM
Moonset
10:41 AM
In sign
♓︎ Pisces
McKinney, TX
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

McKinney at a glance

  • Today vs. normal: 12°F above the seasonal normal for this latitude
  • Last frost: March 6 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP codes: 75069, 75070, 75071, 75072

16-Day Forecast — McKinney

  1. Sat99°79°5%
  2. Sun98°73°12%
  3. Mon97°73°12%
  4. Tue99°74°9%
  5. Wed103°77°5%
  6. Thu106°79°1%
  7. Fri103°81°2%
  8. Sat105°80°6%
  9. Sun104°79°5%
  10. Mon103°77°4%
  11. Tue110°78°2%
  12. Wed113°82°19%
  13. Thu95°74°11%
  14. Fri88°69°12%
  15. Sat87°72°20%
  16. Sun97°74°20%

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

Live wind & temperature near McKinney

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 — McKinney

SPC includes McKinney 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.

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 185 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——
February——
Marchlettuce, peas, spinach, radishes—
Aprillettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, 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

McKinney peaks at about 85°F in July and bottoms near 46°F in January; October brings the heaviest rain (5.3 inches) and July the least (2.2 inches).

MonthMean tempPrecipRainy days
January46°2.8″5
February50°3.4″5
March58°3.6″6
April65°3.5″5
May73°5.2″7
June81°3.8″5
July85°2.2″4
August85°2.5″4
September77°3.3″4
October67°5.3″6
November56°3.0″4
December48°3.4″4

Regional context

McKinney swings from 46°F in January to 85°F in July (39°F) per NOAA NCEI 1991-2020 normals; precipitation in McKinney runs about 41.9 inches on roughly 57 measurable days.

Rainfall in McKinney stays even across the calendar: October tops out at 5.3 inches over 5.6 rainy days, and July still logs 2.2 inches across 3.5 — a narrow range for McKinney. It is a balanced pattern McKinney shares with places like Fairview, TX, New Hope, TX and Allen, TX.

With a coldest-month mean of 46°F, McKinney stays mostly frost-free and grows year-round. The July peak near 85°F is McKinney's real limit, pushing cool-season vegetables to spring and fall. Within McKinney, low or inland lots lose 3-5°F overnight versus McKinney's coastal ground.

Similar climates: Fairview, TX, New Hope, TX, Allen, TX, Lowry Crossing, TX, Prosper, TX.

Naturalist notes

Late April brings the return of Mississippi Kites to McKinney, their sleek forms cutting through warming air as they hunt insects above the tree canopy.

Texas Redbud trees burst into magenta bloom throughout March, their heart-shaped leaves emerging after the flowers fade.

Frequently asked

When does it freeze in McKinney?
McKinney's last spring frost lands near mid-March, and in McKinney the first fall frost follows around mid-December.
What is the rainy season in McKinney?
McKinney sees its heaviest rain in October (around 5.3 inches), part of roughly 42 inches a year.
What is the warmest month in McKinney?
The warmest stretch in McKinney comes in July, around 85°F on average.
What is the coldest month in McKinney?
On average January is the chilliest month in McKinney, about 46°F.
When can I start a vegetable garden in McKinney?
McKinney's last frost (mid-March) cues hardy greens; in McKinney, hold heat-lovers two weeks past.
How many rainy days does McKinney get?
Expect roughly 57 wet days a year in McKinney.
What hardiness zone is McKinney?
McKinney sits in the USDA zone set by January lows near 46°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for McKinney?
McKinney'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 McKinney?
See this week's day-by-day rain chances for McKinney in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in McKinney?
Current conditions for McKinney and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the McKinney forecast updated?
The McKinney forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in McKinney?
Today's sunrise and sunset times for McKinney 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 McKinney?
The next few days in McKinney's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

McKinney, Texas occupies a humid subtropical zone, with January means near 46°F and July around 85°F — a 39°F swing.

McKinney sees close to 42 inches of precipitation annually, falling across some 57 wet days.

Latitude 33.2°N gives McKinney its 39°F swing, and with it the rhythm of McKinney's growing season.

All cities in Texas →

Dallas, TX weather →

ZIP codes in McKinney

  • 75069
  • 75072
  • 75070
  • 75071

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.