Lawn Dominator

Live soil temperature · 2 inches down

Soil temperature in Mesa, AZ

Right now · 85201

73.9°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: Fall pre-emergent window is open: get it down before soil drops below 70°F. Pre-emergent is a product that stops weed seeds before they sprout, so it only works ahead of germination.

By depth

Surface
68.6°F
2 in depth
73.9°F
6 in depth
81.2°F

Past 14 days · 24-hour average

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

This week in Mesa

Over the past week, soil 2 inches down in Mesa, AZ ranged from 79.5°F to 89.4°F and fell 7.8°F, averaging 86.8°F.

Daily average soil temperature in Mesa, AZ 85201 for the past week, by depth
DaySurface2 in6 in
Mon87.6°F87.3°F86.6°F
Tue88.9°F88.4°F87.6°F
Wed88.7°F88.5°F88°F
Thu89.7°F89.4°F88.7°F
Fri89.4°F89.2°F88.8°F
Sat84.2°F85.5°F87.1°F
Sun77.2°F79.5°F82.8°F

Daily averages from Open-Meteo for Mesa, AZ 85201. 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
Cooling out of summer stress and starting to recover. Fall feeding and seeding start here. Pre-emergent and overseeding cannot go down together, so pick one before you buy.

Nearest readings

Soil temperature near Mesa

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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 00:06:32 GMT