Live soil temperature · 2 inches down
Soil temperature in Boise, ID
Right now · 83701
59.4°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
- 51.6°F
- 2 in depth
- 59.4°F
- 6 in depth
- 64.6°F
Past 14 days · 24-hour average
This week in Boise
Over the past week, soil 2 inches down in Boise, ID ranged from 64°F to 69.6°F and fell 5.6°F, averaging 68°F.
| Day | Surface | 2 in | 6 in |
|---|---|---|---|
| Sun | 70.7°F | 69.6°F | 68.5°F |
| Mon | 69.7°F | 69.6°F | 69°F |
| Tue | 67.3°F | 67.9°F | 68°F |
| Wed | 67.4°F | 67.5°F | 67.5°F |
| Thu | 67.7°F | 67.6°F | 67.5°F |
| Fri | 70.5°F | 69.5°F | 68.6°F |
| Sat | 59.5°F | 64°F | 66.5°F |
Daily averages from Open-Meteo for Boise, ID 83701. 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 is slowing toward winter. Hold nitrogen. Winter weeds are already up, so treat what you can see rather than applying a pre-emergent now.
- 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 Boise
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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 00:07:31 GMT