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Weather · September

McKinney weather in September

Average highs of 88°F, lows of 66°F and 2.8 in of rain, from 30 years of weather records.

September is McKinney’s 4th warmest month, with average highs of 88°F and lows of 66°F. That is 7° cooler than August, and 12° above the yearly average high.

Average high
88°F
Average low
66°F
Precipitation
2.8 in
Wet days
7
Sunrise · sunset
7:09 AM · 7:34 PM

September across the year

  1. 56°34°Jan
  2. 60°38°Feb
  3. 68°46°Mar
  4. 75°53°Apr
  5. 83°62°May
  6. 91°70°Jun
  7. 95°74°Jul
  8. 96°73°Aug
  9. 88°66°Sep
  10. 78°54°Oct
  11. 66°44°Nov
  12. 57°36°Dec

High and low Rain

What to wear in September

  • Warm days: shorts and T-shirts.

What’s on in McKinney in September

See all upcoming events and school days off.

Around McKinney

Foote-Crouch House, 401 N. Benge McKinney
Foote-Crouch HouseBeckyquilts · CC BY-SA 3.0
Heard-Craig House and Gardens, McKinney
Heard-Craig House and GardensSusan Bartley · CC BY-SA 3.0
E.W. Kirkpatrick House, McKinney
E.W. Kirkpatrick HouseBeckyquilts · CC BY-SA 3.0

See McKinney

A look around town before you go.

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THINGS TO DO · YOUTUBE SHORT

Things to do in McKinney, Texas!

A local activity Short shared by RV Geeking.

Watch on YouTube ↗

September compared with the months around it

MonthHighLowRain
August96°F73°F1.7 in
September88°F66°F2.8 in
October78°F54°F4.4 in

Planning a trip? See the best time to visit McKinney and today’s forecast.

Questions

How hot does it get in McKinney in September?

Average highs are 88°F and average lows 66°F, for a daily mean of 77°F. Individual days run hotter or colder than these 30-year averages.

Does it rain in McKinney in September?

September averages 2.8 in of precipitation over about 7 days with at least 0.01 in. It is the 8th wettest month of the year.

What time is sunset in McKinney in September?

Around mid-September the sun rises about 7:09 AM and sets about 7:34 PM, for roughly 12.4 hours of daylight.

Is September a good time to visit McKinney?

The mildest months for visiting are March, April, November. September is warm, with Halloween events.

NOAA U.S. Climate Normals 1991–2020, Mckinney Muni Ap station (3.1 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.

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