Live soil temperature · 2 inches down
Soil temperature in Columbia, SC
Right now · 29201
52.6°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
- 46.8°F
- 2 in depth
- 52.6°F
- 6 in depth
- 60.5°F
Past 14 days · 24-hour average
This week in Columbia
Over the past week, soil 2 inches down in Columbia, SC ranged from 58.5°F to 75.1°F and fell 13.2°F, averaging 70.1°F. 4 of those days sat inside the fall pre-emergent window, before soil drops below 70°F.
| Day | Surface | 2 in | 6 in |
|---|---|---|---|
| Mon | 72°F | 71.7°F | 71.1°F |
| Tue | 71°F | 71.1°F | 71.2°F |
| Wed | 72.5°F | 72.1°F | 71.6°F |
| Thu | 75°F | 74.5°F | 73.7°F |
| Fri | 75.3°F | 75.1°F | 74.6°F |
| Sat | 64.8°F | 67.5°F | 70.7°F |
| Sun | 55.9°F | 58.5°F | 62.4°F |
Daily averages from Open-Meteo for Columbia, SC 29201. Readings refresh every six hours.
Interpretation
What this means for your grass.
- Bermuda
- Bermuda is shutting down for the year. Hold nitrogen. Annual bluegrass has been germinating since soil passed 70°F, so a pre-emergent now only stops seed that hasn't sprouted yet.
- 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 Columbia
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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 Sun, 18 Oct 2026 07:21:52 GMT