Live soil temperature · 2 inches down
Soil temperature in Detroit, MI
Right now · 48226
61.1°FCool
Annual bluegrass (Poa annua) and winter annual weeds: First fall window has passed. Most labels call for a second application 8 to 10 weeks after the first. Pre-emergent is a product that stops weed seeds before they sprout, so it only works ahead of germination.
By depth
- Surface
- 60.3°F
- 2 in depth
- 61.1°F
- 6 in depth
- 62.1°F
Past 14 days · 24-hour average
This week in Detroit
Over the past week, soil 2 inches down in Detroit, MI ranged from 56.2°F to 63.8°F and rose 2.4°F, averaging 61°F.
| Day | Surface | 2 in | 6 in |
|---|---|---|---|
| Mon | 57.9°F | 59.2°F | 61.1°F |
| Tue | 56.1°F | 56.2°F | 58.8°F |
| Wed | 65.1°F | 63.7°F | 61.5°F |
| Thu | 61.9°F | 62.7°F | 63.4°F |
| Fri | 59.6°F | 59.8°F | 61.2°F |
| Sat | 64.5°F | 63.8°F | 62.7°F |
| Sun | 61.1°F | 61.6°F | 62.8°F |
Daily averages from Open-Meteo for Detroit, MI 48226. Readings refresh every six hours.
Interpretation
What this means for your grass.
- Bermuda
- Bermuda's growth is slowing toward dormancy. Stop pushing nitrogen. Soil is already below the 70°F annual bluegrass germination point, so fall pre-emergent is late, but it still blocks the seed that germinates over the next couple of months.
- Zoysia
- Zoysia is slowing toward dormancy. Stop nitrogen. Soil is below the 70°F annual bluegrass germination point, so fall pre-emergent is late but still worth putting down for later-germinating seed.
- St. Augustine
- St. Augustine's growth is winding down and the fall pre-emergent window is closing: soil is at or below 70°F, so annual bluegrass is germinating. Apply now if you haven't, and expect to treat some weeds that are already up.
- Cool-season
- The best growing range of the year for cool-season grass. This is prime time to fertilize and to overseed. If you are overseeding, do not apply pre-emergent: it stops grass seed the same way it stops weed seed.
Nearest readings
Soil temperature near Detroit
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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 00:06:14 GMT