ZIP 91016 · Monrovia, CA · Nov 11, 2026
Soil temperature for ZIP code 91016
low 59°F · high 69°F
Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 10.8 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
- 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 | 56.1°F | 51.2°F | 63.3°F | analysis |
| Nov 5 | 58.2°F | 53.4°F | 65.4°F | analysis |
| Nov 6 | 59.1°F | 54.6°F | 65.7°F | analysis |
| Nov 7 | 60.1°F | 55.2°F | 68.2°F | analysis |
| Nov 8 | 62.0°F | 57.1°F | 69.2°F | analysis |
| Nov 9 | 63.1°F | 58.6°F | 69.3°F | analysis |
| Nov 10 | 63.5°F | 58.6°F | 71.1°F | analysis |
| Today | 63.2°F | 58.6°F | 69.4°F | analysis |
| Nov 12 | 61.3°F | 57.7°F | 65.7°F | forecast |
| Nov 13 | 58.3°F | 55.5°F | 61.9°F | forecast |
| Nov 14 | 55.9°F | 54.6°F | 57.2°F | forecast |
| Nov 15 | 55.2°F | 52.4°F | 60.5°F | forecast |
| Nov 16 | 55.1°F | 51.4°F | 59.9°F | forecast |
| Nov 17 | 54.5°F | 52.9°F | 55.7°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 | Jan 15 |
| 55°F | Crabgrass can germinate | Feb 1 |
| 60°F | Tomatoes | Mar 13 |
| 65°F | Warm-season grass seed | Mar 16 |
Nearby ZIP codes
Today's modelled average.
91008 63°F · 91006 63°F · 91010 63°F · 91024 63°F · 91007 63°F · 91706 78°F · 91780 78°F · 91107 63°F
More: crabgrass timing in California · every California city · how accurate the model is.
Questions
- What is the soil temperature in ZIP code 91016 today?
- About 63°F on average in the top 4 inches (0–10 cm), low 59°F and high 69°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 10.8 km from the ZIP centre, not a reading from your yard.
- Is it time for crabgrass preventer in 91016?
- The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jan 15 and 55°F from Feb 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).