4-Inch Soil Temperature in Alabama
The current average 4-inch soil temperature across Alabama is 83°F, measured at 31 USDA and NOAA monitoring stations. Readings range from 75°F to 91°F. Soil across Alabama is right at the seasonal normal of 82°F for mid-August, based on 31 of 31 stations with historical records. Last updated August 9, 2026.
Why the 4-Inch Reading
Every reading here is measured at native 4-inch depth by USDA SCAN (Soil Climate Analysis Network) and NOAA USCRN (US Climate Reference Network) stations — not modeled. The 4-inch root-zone temperature changes more slowly than the surface, making it the steadier signal for established-lawn and garden timing: pre-emergent and broadleaf herbicide windows, fertilizer applications, and core aeration.
Stations Measuring 4-Inch Depth in Alabama (31)
| Station | 4" Temp | Last Reading |
|---|---|---|
| Wtars (Madison) | 79°F | 2026-08-09 |
| Stanley Farm (Morgan) | 75°F | 2026-08-09 |
| AAMU-JTG (Madison) | 81°F | 2026-08-09 |
| Bragg Farm (Madison) | 84°F | 2026-08-09 |
| Cullman-NAHRC (Cullman) | 78°F | 2026-08-09 |
| Livingston-UWA (Sumter) | 86°F | 2026-08-09 |
| Tuskegee (Macon) | 87°F | 2026-08-09 |
| Isbell Farms (Colbert) | 76°F | 2026-08-09 |
| Dee River Ranch (Pickens) | 83°F | 2026-08-09 |
| Wedowee (Randolph) | 79°F | 2026-08-09 |
| Selma (Dallas) | 84°F | 2026-08-09 |
| Broad Acres (Montgomery) | 84°F | 2026-08-09 |
| Morris Farms (Macon) | 83°F | 2026-08-09 |
| Sudduth Farms (Winston) | 78°F | 2026-08-09 |
| Koptis Farms (Baldwin) | 91°F | 2026-08-09 |
| Perdido Riv Farms (Escambia) | 86°F | 2026-08-09 |
| River Road Farms (Houston) | 80°F | 2026-07-29 |
| Thomasville 2 S | 87°F | 2026-08-09 |
| Selma 13 WNW | 84°F | 2026-08-09 |
| Valley Head 1 SSW | 78°F | 2026-08-09 |
| Courtland 2 WSW | 81°F | 2026-08-09 |
| Clanton 2 NE | 88°F | 2026-08-09 |
| Gainesville 2 NE | 87°F | 2026-08-09 |
| Greensboro 2 WNW | 80°F | 2026-08-09 |
| Muscle Shoals 2 N | 80°F | 2026-08-09 |
| Russellville 4 SSE | 80°F | 2026-08-09 |
| Selma 6 SSE | 91°F | 2026-08-09 |
| Brewton 3 NNE | 89°F | 2026-08-09 |
| Northport 2 S | 84°F | 2026-08-09 |
| Highland Home 2 S | 84°F | 2026-08-07 |
| Talladega 10 NNE | 80°F | 2026-08-09 |
Cities in Alabama (49)
| City | ZIP | Current Temp |
|---|---|---|
| Albertville | 35950 | 75°F |
| Alexander City | 35010 | 83°F |
| Andalusia | 36420 | 89°F |
| Anniston | 36201 | 80°F |
| Athens | 35611 | 84°F |
| Atmore | 36502 | 86°F |
| Auburn | 36830 | 87°F |
| Bessemer | 35020 | 84°F |
| Bham | 35225 | 88°F |
| Birmingham | 35201 | 80°F |
| Boaz | 35956 | 75°F |
| Brewton | 36426 | 89°F |
| Clanton | 35045 | 88°F |
| Cullman | 35055 | 78°F |
| Decatur | 35601 | 75°F |
| Dothan | 36301 | 80°F |
| Enterprise | 36330 | 84°F |
| Eufaula | 36027 | 87°F |
| Fairhope | 36532 | 91°F |
| Florence | 35630 | 80°F |
| Foley | 36535 | 91°F |
| Fort Payne | 35967 | 78°F |
| Gadsden | 35901 | 80°F |
| Gulf Shores | 36542 | 91°F |
| Huntsville | 35801 | 81°F |
| Jasper | 35501 | 78°F |
| Madison | 35756 | 75°F |
| Mobile | 36601 | 91°F |
| Monroeville | 36460 | 86°F |
| Montgomery | 36101 | 84°F |
| Muscle Shoals | 35661 | 80°F |
| Northport | 35473 | 84°F |
| Opelika | 36801 | 87°F |
| Ozark | 36360 | 80°F |
| Pell City | 35125 | 80°F |
| Phenix City | 36867 | 87°F |
| Prattville | 36066 | 84°F |
| Russellville | 35653 | 80°F |
| Scottsboro | 35768 | 81°F |
| Selma | 36701 | 91°F |
| Spanish Fort | 36527 | 91°F |
| Sylacauga | 35150 | 88°F |
| Talladega | 35160 | 80°F |
| Theodore | 36582 | 91°F |
| Troy | 36079 | 84°F |
| Tuscaloosa | 35401 | 84°F |
| Tuskegee Institute | 36087 | 87°F |
| Valley | 36854 | 79°F |
| Wetumpka | 36092 | 83°F |
4-Inch Soil Temperature FAQ for Alabama
What is the current 4-inch soil temperature in Alabama?
The current average 4-inch soil temperature across Alabama is 83°F, measured at 31 USDA and NOAA stations. Readings range from 75°F to 91°F depending on location and elevation. Soil across Alabama is right at the seasonal normal of 82°F for mid-August, based on 31 of 31 stations with historical records.
What does the 4 inch soil temperature mean?
The 4 inch soil temperature shows conditions deeper in the root zone than the 2 inch germination reading. It is commonly used for established lawn, garden, and agricultural timing because it changes more slowly than the surface layer, so it is a steadier signal for fertilizer, aeration, and weed-control decisions.
Why use 4-inch soil temperature instead of 2-inch?
Use 2 inches for germination decisions, since that is where seeds sit. Use the 4 inch soil temperature for established lawn and garden timing: it reads the root zone, changes more slowly than the surface, and is the depth most fertilizer, aeration, and disease guidance references.
See the national 4-inch soil temperature map, the full Alabama soil temperature directory (all depths), or the live national soil temperature map.