ZIP 66039 · Iola, KS · Nov 11, 2026
Soil temperature for ZIP code 66039
low 56°F · high 60°F
Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 13.8 km from the ZIP centre point
What the soil says today
- Pre-emergentSeason over
- Cool-season seedToo late in the season
- Warm-season seedToo cold
- TomatoesToo cold
- 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 | 58.0°F | 56.4°F | 60.2°F | analysis |
| Nov 5 | 53.9°F | 51.2°F | 56.5°F | analysis |
| Nov 6 | 51.3°F | 49.2°F | 52.6°F | analysis |
| Nov 7 | 47.5°F | 44.2°F | 50.3°F | analysis |
| Nov 8 | 48.6°F | 44.2°F | 54.8°F | analysis |
| Nov 9 | 54.0°F | 50.6°F | 58.1°F | analysis |
| Nov 10 | 56.0°F | 52.5°F | 60.3°F | analysis |
| Today | 57.9°F | 56.0°F | 59.9°F | analysis |
| Nov 12 | 53.8°F | 51.7°F | 55.9°F | forecast |
| Nov 13 | 46.7°F | 44.0°F | 48.9°F | forecast |
| Nov 14 | 42.7°F | 39.7°F | 45.3°F | forecast |
| Nov 15 | 45.3°F | 43.8°F | 48.0°F | forecast |
| Nov 16 | 45.5°F | 42.2°F | 49.1°F | forecast |
| Nov 17 | 46.4°F | 43.1°F | 50.1°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 | Feb 9 |
| 50°F | Pre-emergent window opens | Mar 6 |
| 55°F | Crabgrass can germinate | Mar 22 |
| 60°F | Tomatoes | May 13 |
| 65°F | Warm-season grass seed | May 27 |
Nearby ZIP codes
Today's modelled average.
66010 58°F · 66091 58°F · 66014 58°F · 66015 58°F · 66755 58°F · 66716 58°F · 66032 58°F · 66751 58°F
More: crabgrass timing in Kansas · every Kansas city · how accurate the model is.
Questions
- What is the soil temperature in ZIP code 66039 today?
- About 58°F on average in the top 4 inches (0–10 cm), low 56°F and high 60°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 13.8 km from the ZIP centre, not a reading from your yard.
- Is it time for crabgrass preventer in 66039?
- The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 6 and 55°F from Mar 22.
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).