Live soil temperature · 2 inches down
Soil temperature in Salem, OR
Right now · 97301
49.5°FCold
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
- 41.4°F
- 2 in depth
- 49.5°F
- 6 in depth
- 54.4°F
Past 14 days · 24-hour average
This week in Salem
Over the past week, soil 2 inches down in Salem, OR ranged from 50.6°F to 61.4°F and fell 9.5°F, averaging 57°F.
| Day | Surface | 2 in | 6 in |
|---|---|---|---|
| Mon | 60.1°F | 60.1°F | 60.2°F |
| Tue | 61.1°F | 61.4°F | 61.4°F |
| Wed | 59.9°F | 60.4°F | 60.8°F |
| Thu | 58.6°F | 59.2°F | 59.8°F |
| Fri | 52.7°F | 55.4°F | 58.2°F |
| Sat | 49.5°F | 52.2°F | 55.3°F |
| Sun | 49°F | 50.6°F | 53.1°F |
Daily averages from Open-Meteo for Salem, OR 97301. Readings refresh every six hours.
Interpretation
What this means for your grass.
- Bermuda
- Bermuda is dormant for the winter. No fertilizer, no PGR. Winter weeds are already up by now, so treat what you can actually see rather than applying a pre-emergent.
- Zoysia
- Zoysia is dormant or nearly so. Hold all fertilizer and PGR. Winter weeds have already germinated, so treat what is visible instead of applying a pre-emergent.
- 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 Salem
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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