Soilclock

Bridgeport 54°F soil temperature

4 inches down: 55°F · 7-day change +2°

Updated Nov 4, 2026, 7:39 AM EST · Connecticut

Bridgeport, Connecticut. Estimated 2-inch daily average for Nov 3, 2° above normal.

What to do in Bridgeport now

Bridgeport is in cool-season grass country. Dates are typical for this spot, worked out from 23 years of weather at Igor I Sikorsky Memorial Airport; each status uses this year's soil estimates.

Cool-season: tall fescue, Kentucky bluegrass, perennial ryegrass, fine fescue

  • Crabgrass pre-emergent Closed Apr 18 Typical: Apr 15 – Apr 292-inch soil held 55°F for a week from Apr 18, so crabgrass was sprouting. Next window: about Apr 15 – Apr 29, 2027.
  • Seed or overseed Late · risky Typical: Sep 20 – Nov 2Soil fell below 55°F on Oct 28. Seed sown now germinates slowly and may not survive winter. The hard stop, 4-inch soil under 50°F, typically comes around Nov 10.
  • Late-fall feeding Final feeding from about Nov 10 Typical: Nov 10 – Dec 8Not too late. Feed on your normal fall schedule; the last feeding of the year goes down when 4-inch soil falls to about 50°F (typically Nov 10) and before it reaches 40°F (typically Dec 8).

The last 60 days and the week ahead

Bridgeport soil is 2° warmer than normal for Nov 3, warmer than on 71% of those dates since 2005, and 3° warmer than a year ago.

The green line is our estimate of the daily average soil temperature 2 inches down, driven by temperatures at Igor I Sikorsky Memorial Airport, 6.3 km from the city center. The dashed part runs the National Weather Service forecast through the same model. Hover or tap for any day.

2-inch soil, estimated From the NWS forecast Normal Normal range (8 years in 10)

40°50°60°70°80°90° 50°F55°F Nov 3 Sep 15Oct 1Oct 15Nov 1
Show the numbers
Date2-inch soil4-inch soilAir high / lowNormal (2 in)
Oct 1463°64°77° / 60°59°
Oct 1561°62°64° / 50°59°
Oct 1662°63°69° / 59°58°
Oct 1758°60°59° / 40°58°
Oct 1855°58°57° / 38°57°
Oct 1954°57°62° / 41°57°
Oct 2054°57°69° / 41°57°
Oct 2155°57°62° / 49°56°
Oct 2255°57°68° / 44°56°
Oct 2354°56°61° / 43°56°
Oct 2453°55°61° / 39°56°
Oct 2552°54°63° / 34°55°
Oct 2652°54°66° / 38°55°
Oct 2751°53°58° / 43°54°
Oct 2851°53°56° / 42°54°
Oct 2952°53°66° / 44°53°
Oct 3054°55°74° / 46°53°
Oct 3153°54°58° / 42°52°
Nov 151°53°59° / 36°52°
Nov 252°54°66° / 43°51°
Nov 354°55°66° / 48°51°
Close view of a Kentucky bluegrass lawn
Kentucky bluegrass, the most common cool-season lawn grass in the northern US.

Which grass grows in Bridgeport

Bridgeport winters are cold enough (January averages 31°F) that cool-season grasses, mostly Kentucky bluegrass, tall fescue and perennial ryegrass, make up most lawns. They grow in spring and fall and slow down in summer heat.

Bridgeport soil through the year

Weekly 2-inch estimates for 2026 so far against 2025 and the normal for each week. The red lines mark 50°F, when crabgrass pre-emergent should be down, and 65°F, when warm-season seed sprouts well.

2026 2025 Normal (2005–2025) 8 years in 10

20°30°40°50°60°70°80°90° 50°F65°F 2026 JanFebMarAprMayJunJulAugSepOctNovDec

Normal by month

Month2 in4 inAir
Jan35°36°31°
Feb35°36°33°
Mar40°41°40°
Apr50°51°50°
May60°61°60°
Jun71°72°70°
Jul78°79°76°
Aug76°78°75°
Sep70°72°68°
Oct59°60°56°
Nov47°48°46°
Dec38°39°37°

Soil: average of our daily estimates, 2005–2025. Air: NOAA 1991–2020 normals for the station.

Typical lawn dates in Bridgeport

Each date is when the soil estimate (or the air, for freezes) crossed the threshold, year by year since 2005. “Early” and “late” are the 10th and 90th percentile years, so 8 years in 10 fall between them.

EventEarly yearTypicalLate year2026
Last spring freeze (32°F) Mar 25Apr 3Apr 14 Apr 9
Crabgrass model: 250 growing degree days Feb 11Mar 11Mar 25 Mar 17
Pre-emergent window opens (2-inch soil 50°F) Apr 5Apr 15Apr 21 Apr 15
Crabgrass begins to sprout (2-inch soil 55°F) Apr 17Apr 29May 9 Apr 18
Cool-season lawns start growing (4-inch soil 55°F) Apr 17Apr 27May 6 Apr 18
Warm-season seeding opens (4-inch soil 65°F) May 22May 28Jun 7 May 21
Cool-season seeding opens (4-inch soil under 70°F) Sep 11Sep 20Sep 30 Sep 23
Cool-season seeding ends (4-inch soil under 55°F) Oct 24Nov 2Nov 9 Oct 28
Warm-season grass goes dormant (4-inch under 55°F) Oct 24Nov 2Nov 9 Oct 28
First fall freeze (32°F) Oct 27Nov 7Nov 15 not yet
Roots stop feeding (4-inch soil under 40°F) (in 19 of 21 years) Dec 1Dec 8Dec 19 not yet
Large crabgrass with its spreading finger-like seed heads
Large crabgrass in seed. Each plant can drop thousands of seeds that wait for warm spring soil.
A dug soil profile showing layers of silt, loam and clay
A soil profile. The top few inches warm and cool fastest; that is where seeds sprout.

Where these numbers come from

There is no soil sensor in most cities, so we estimate it. Shallow soil follows air temperature with a lag of a few days, and runs a little warmer than the air in fall. We fitted that relationship to 190 USDA soil-sensor stations; on years held out of the fit, the estimate was off by 3.3°F on an average day, and it put the spring 55°F date within a median of 3 days. Read the methodology.

Weather: RCC ACIS station KBDR (IGOR I SIKORSKY MEMORIAL AIRPORT), daily data since 1948. Forecast: National Weather Service, OKX office. Last observed day: Nov 3, 2026.

Bridgeport questions

Botanical line drawing of slender crabgrass from 1913
Slender crabgrass, from Britton and Brown, An Illustrated Flora of the Northern United States, 1913.

What is the soil temperature in Bridgeport today? Our estimate for Nov 3 is 54°F at 2 inches and 55°F at 4 inches, as a daily average. Early-morning soil runs a few degrees cooler than that, and afternoon soil warmer.

When should I put down crabgrass pre-emergent in Bridgeport? Apply when 2-inch soil holds about 50°F and before it holds 55°F. That has typically been Apr 15 to Apr 29 in Bridgeport. For 2026 the window closed on Apr 18.

Is it too late to overseed in Bridgeport? Late · risky. Soil fell below 55°F on Oct 28. Seed sown now germinates slowly and may not survive winter. The hard stop, 4-inch soil under 50°F, typically comes around Nov 10.

Is it too late to fertilize in Bridgeport? Final feeding from about Nov 10. Not too late. Feed on your normal fall schedule; the last feeding of the year goes down when 4-inch soil falls to about 50°F (typically Nov 10) and before it reaches 40°F (typically Dec 8).

When is the last frost in Bridgeport? The last 32°F night of spring has typically come around Apr 3, and as late as Apr 14 in 1 year in 10. The first fall freeze typically arrives around Nov 7.

Why 2 inches and 4 inches? Crabgrass and most weed seeds sprout in the top inch or two, so pre-emergent timing follows 2-inch soil. Grass seed and roots respond to the slightly steadier soil at about 4 inches.

How accurate is this? It is a model, not a probe in your yard. Expect about 3–4°F of difference on a given day; shade, slope, mulch and irrigation all move real soil. The dates and trends are more reliable than any single day.

Soil near Bridgeport today

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