ZIP 99169 · Washington · Nov 11, 2026
Soil temperature for ZIP code 99169
low 49°F · high 57°F
Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 16.2 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 | 46.8°F | 43.1°F | 52.3°F | analysis |
| Nov 5 | 47.4°F | 44.4°F | 53.2°F | analysis |
| Nov 6 | 46.7°F | 43.8°F | 50.8°F | analysis |
| Nov 7 | 49.7°F | 47.0°F | 54.7°F | analysis |
| Nov 8 | 51.5°F | 50.1°F | 54.4°F | analysis |
| Nov 9 | 49.8°F | 47.0°F | 54.4°F | analysis |
| Nov 10 | 49.6°F | 47.6°F | 51.7°F | analysis |
| Today | 51.4°F | 49.0°F | 56.6°F | analysis |
| Nov 12 | 50.9°F | 48.5°F | 54.4°F | forecast |
| Nov 13 | 50.3°F | 48.2°F | 53.4°F | forecast |
| Nov 14 | 50.5°F | 48.4°F | 52.9°F | forecast |
| Nov 15 | 47.4°F | 46.1°F | 48.9°F | forecast |
| Nov 16 | 48.6°F | 47.1°F | 50.7°F | forecast |
| Nov 17 | 45.4°F | 42.9°F | 49.2°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 26 |
| 50°F | Pre-emergent window opens | Apr 6 |
| 55°F | Crabgrass can germinate | May 1 |
| 60°F | Tomatoes | May 3 |
| 65°F | Warm-season grass seed | Jun 15 |
This ZIP code area covers about 715 square miles; the reading is for the model grid cell nearest its Census centre point, which can be far from where you are. Try a neighbouring ZIP if it looks off.
Nearby ZIP codes
Today's modelled average.
99144 51°F · 99105 52°F · 99154 49°F · 99341 51°F · 99032 51°F · 99159 50°F · 99134 49°F · 99371 52°F
More: crabgrass timing in Washington · every Washington city · how accurate the model is.
Questions
- What is the soil temperature in ZIP code 99169 today?
- About 51°F on average in the top 4 inches (0–10 cm), low 49°F and high 57°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 16.2 km from the ZIP centre, not a reading from your yard.
- Is it time for crabgrass preventer in 99169?
- The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 6 and 55°F from May 1.
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).