Lawn Dominator

Live soil temperature · 2 inches down

Soil temperature in Mckinney, TX

Right now · 75069

77.8°FActive

30°40°50°60°70°80°90°
Fall pre-emergent windowAnnual bluegrass germinates below 70°F

Annual bluegrass (Poa annua) and winter annual weeds: Not open yet: soil is still warm. Aim to have pre-emergent down before it cools past 70°F. Pre-emergent is a product that stops weed seeds before they sprout, so it only works ahead of germination.

By depth

Surface
72.1°F
2 in depth
77.8°F
6 in depth
77.2°F

Past 14 days · 24-hour average

70°80°90°9/2810/110/410/710/10
Fall pre-emergent window

This week in Mckinney

Over the past week, soil 2 inches down in Mckinney, TX ranged from 71.9°F to 76.7°F and rose 2.7°F, averaging 73.8°F. 6 of those days sat inside the fall pre-emergent window, before soil drops below 70°F.

Daily average soil temperature in Mckinney, TX 75069 for the past week, by depth
DaySurface2 in6 in
Mon72.5°F74°F75.1°F
Tue70.9°F72.2°F73.8°F
Wed70.8°F71.9°F73.6°F
Thu73.2°F73.3°F73.8°F
Fri73.7°F74.1°F74.4°F
Sat74.4°F74.1°F74.9°F
Sun77.4°F76.7°F75.8°F

Daily averages from Open-Meteo for Mckinney, TX 75069. Readings refresh every six hours.

Interpretation

What this means for your grass.

Bermuda
Bermuda is still growing, but the season is turning. This is the fall pre-emergent window: get it down before soil falls below 70°F, which is when annual bluegrass and other winter weeds start to germinate.
Zoysia
Zoysia is still growing and the season is turning. This is the fall pre-emergent window: get it down before soil falls below 70°F. Ease off nitrogen so you aren't pushing growth into dormancy.
St. Augustine
St. Augustine is still growing and the season is turning. This is the fall pre-emergent window: get it down before soil falls below 70°F. Check the label for St. Augustine tolerance before you buy.
Cool-season
Still too hot for cool-season grass. Hold fertilizer, keep irrigation up, and wait for soil to cool before seeding or feeding.

Nearest readings

Soil temperature near Mckinney

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Weather data from Open-Meteo. Timing guidance follows the sources on when to apply pre-emergent and how to use soil temperature.Data as of Mon, 12 Oct 2026 00:07:32 GMT