Soil Temperature in Delaware
Browse soil temperature data for 4 cities across Delaware. Each page includes current soil readings from the nearest USDA monitoring station, historical averages, USDA hardiness zone, and planting window recommendations.
Cities in Delaware (4)
| City | ZIP | Current Temp |
|---|---|---|
| Dover | 19901 | 77°F |
| New Castle | 19720 | 77°F |
| Newark | 19702 | 77°F |
| Wilmington | 19801 | 77°F |
Lawn Care Timing Guides for Delaware
- When to Apply Broadleaf Weed Killer on Cool-Season Lawns in Spring
Spring broadleaf timing for Kentucky bluegrass, fescue, perennial ryegrass, and the cool-season blends.
- How to Identify and Kill Nutsedge in Your Lawn
Nutsedge is a sedge, not a grass, which is why standard weed control fails.
- How to Apply Liquid Pre-Emergent Herbicide
Learn how to mix, calibrate, and spray liquid pre-emergent herbicide.
- Grass Seed Germination Soil Temperature by Species
The soil temperature each grass species needs to germinate, from 15+ university extensions: tall fescue and perennial ryegrass 68-86°F, Kentucky bluegrass 59-86°F, fine fescue 59-77°F, cool-season 50°F trigger, warm-season 65°F.
Soil Temperature FAQ for Delaware
What is the current soil temperature in Delaware?
Soil temperatures vary across Delaware depending on location, elevation, and recent weather. Enter your ZIP code on any city page for the reading from your nearest USDA monitoring station.
When should I apply pre-emergent in Delaware?
Apply pre-emergent herbicide when soil at 2 inches reaches 55°F for several consecutive days. Timing varies across Delaware, so check your city's page for station-specific readings and the pre-emergent timing recommendation.
When can I plant grass seed in Delaware?
Cool-season grasses (fescue, bluegrass) can be seeded when soil holds between 50 and 65°F. Warm-season grasses (bermuda, zoysia) need soil above 65°F. Timing varies by location, so check your city's planting window for the dates specific to your area.