ZIP 78552 · Harlingen, TX · Nov 11, 2026
Soil temperature for ZIP code 78552
low 69°F · high 74°F
Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 6.3 km from the ZIP centre point
What the soil says today
- Pre-emergentSeason over
- Cool-season seedToo late in the season
- Warm-season seedWarm enough
- TomatoesSoil warm enough
- Peas and lettuceWarm enough
From the 5-day mean of the modelled 0–4 in layer.
Soil temperature, 0–4 in: last 7 days and next 7
°F, modelled. Dots and line: daily average (dashed = forecast); bars: low to high; green band: 50–55°F.
View as table
| Day | Average | Low | High | |
|---|---|---|---|---|
| Nov 4 | 83.9°F | 80.8°F | 86.3°F | analysis |
| Nov 5 | 80.0°F | 75.3°F | 84.2°F | analysis |
| Nov 6 | 81.7°F | 77.9°F | 84.1°F | analysis |
| Nov 7 | 79.2°F | 75.5°F | 81.9°F | analysis |
| Nov 8 | 78.4°F | 75.3°F | 80.2°F | analysis |
| Nov 9 | 75.8°F | 75.1°F | 76.9°F | analysis |
| Nov 10 | 72.2°F | 70.5°F | 74.4°F | analysis |
| Today | 71.1°F | 68.8°F | 73.7°F | analysis |
| Nov 12 | 71.8°F | 69.2°F | 74.6°F | forecast |
| Nov 13 | 73.0°F | 67.8°F | 78.4°F | forecast |
| Nov 14 | 73.2°F | 68.9°F | 77.3°F | forecast |
| Nov 15 | 74.2°F | 70.2°F | 76.8°F | forecast |
| Nov 16 | 74.0°F | 71.4°F | 76.0°F | forecast |
| Nov 17 | 70.8°F | 70.1°F | 71.9°F | forecast |
Spring 2026 threshold dates
From the 5-day mean held for 10 days or more.
| Soil | What it means | Held from (spring 2026) |
|---|---|---|
| 40°F | Peas and lettuce | never below |
| 50°F | Pre-emergent window opens | never below |
| 55°F | Crabgrass can germinate | never below |
| 60°F | Tomatoes | Feb 1 |
| 65°F | Warm-season grass seed | Feb 6 |
Nearby ZIP codes
Today's modelled average.
78535 71°F · 78559 71°F · 78550 71°F · 78593 71°F · 78586 71°F · 78570 71°F · 78567 71°F · 78562 71°F
More: crabgrass timing in Texas · every Texas city · how accurate the model is.
Questions
- What is the soil temperature in ZIP code 78552 today?
- About 71°F on average in the top 4 inches (0–10 cm), low 69°F and high 74°F, from NOAA's GFS model run of Nov 11, 12:00 UTC (7 am Eastern). It is a model value for a grid cell 6.3 km from the ZIP centre, not a reading from your yard.
- Is it time for crabgrass preventer in 78552?
- Soil here stayed above 50°F all last winter, so the 50 to 55°F soil rule gives no spring window. Time pre-emergent to your local calendar.
Data: Global Forecast System (GFS) 0.25°, soil temperature 0–10 cm (TSOIL) (NOAA National Centers for Environmental Prediction (NCEP)); 2025 Gazetteer ZIP Code Tabulation Areas (ZCTA) and 2024 cartographic boundary state outlines (U.S. Census Bureau).