Weather in Groton, CT
Groton, Saturday, 10 October, 23:53
Partly cloudy. Feels like 50°. High 59°, low 45°.
Monthly outlook for Groton, CT: average high 59°, average low 44.1°. That is 1.2° below the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 14 October (77.7°), the coolest 19 October (34.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 61.5° | 61.9° | -0.3° |
| 21 October – 30 October | 54.8° | 58.9° | -2.3° |
| 31 October – 9 November | at normal | 56° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Fishers Island (7 mi).
0.25
Groton, Monday, 12 October
Rain. High 69°, low 48°.
0
Groton, Tuesday, 13 October
Overcast. High 64°, low 53°.
0Groton, Wednesday, 14 October
Overcast. High 78°, low 60°.
0
Groton, Thursday, 15 October
Partly cloudy. High 60°, low 46°.
0.15Groton, Friday, 16 October
Light rain. High 65°, low 41°.
0.06Groton, Saturday, 17 October
Light rain. High 66°, low 50°.
0Groton, Sunday, 18 October
Overcast. High 48°, low 37°.
0
Groton, Monday, 19 October
Clear. High 50°, low 34°.
0Groton, Tuesday, 20 October
Clear. High 55°, low 37°.
0Groton, Wednesday, 21 October
Clear. High 55°, low 42°.
0Groton, Thursday, 22 October
Overcast. High 61°, low 51°.
0Groton, Friday, 23 October
Partly cloudy. High 63°, low 47°.
0Groton, Saturday, 24 October
Clear. High 50°, low 39°.
0.04Groton, Sunday, 25 October
Light rain. High 49°, low 35°.
0.03Groton, Monday, 26 October
Light rain. High 50°, low 39°.
0.15Groton, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.16Groton, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.17Groton, Thursday, 29 October
Climate normal for this date — 60-year average.
0.17Groton, Friday, 30 October
Climate normal for this date — 60-year average.
0.08Groton, Saturday, 31 October
Climate normal for this date — 60-year average.
0.11Groton, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Groton, Monday, 2 November
Climate normal for this date — 60-year average.
0.17Groton, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Groton, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.15
Groton, Thursday, 5 November
Climate normal for this date — 60-year average.
0.13Groton, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Groton, Saturday, 7 November
Climate normal for this date — 60-year average.
0.12Groton, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Groton, Monday, 9 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Groton, CT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Groton, CT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
46°Weather in Annapolis, MD65°Weather in Atlanta, GA65°Weather in Augusta, ME36°Weather in Austin, TX
78°Weather in Baton Rouge, LA66°Weather in Bismarck, ND57°Weather in Boise, ID54°Weather in Boston, MA46°Weather in Carson City, NV57°Weather in Charleston, WV58°Weather in Charlotte Amalie, VI81°Weather in Cheyenne, WY65°Weather in Columbia, SC73°Weather in Columbus, OH59°Weather in Concord, NH40°Weather in Denver, CO67°Weather in Des Moines, IA71°Weather in Dover, DE64°Weather in Frankfort, KY59°Weather in Harrisburg, PA61°Weather in Hartford, CT49°Weather in Helena, MT
32°Weather in Honolulu, HI82°Weather in Indianapolis, IN60°Weather in Jackson, MS65°Weather in Jefferson City, MO66°Weather in Juneau, AK32°Weather in Lansing, MI60°Weather in Lincoln, NE73°Weather in Little Rock, AR67°Weather in Madison, WI67°Weather in Montgomery, AL64°Weather in Montpelier, VT37°Weather in Nashville, TN63°Weather in Oklahoma City, OK75°Weather in Olympia, WA50°Weather in Phoenix, AZ78°Weather in Pierre, SD63°Weather in Providence, RI48°Weather in Raleigh, NC69°Weather in Richmond, VA67°Weather in Sacramento, CA61°Weather in Salem, OR50°Weather in Salt Lake City, UT72°Weather in San Juan, PR77°Weather in Santa Fe, NM61°Weather in Springfield, IL63°Weather in St. Paul, MN76°Weather in Tallahassee, FL74°Weather in Topeka, KS71°Weather in Trenton, NJ57°Weather in Washington, DC64°50°Weather in Giants Neck, CT50°Weather in Gildersleeve, CT48°Weather in Golden Spur, CT50°Weather in Goodrich Heights, CT48°Weather in Goodrichville, CT47°Weather in Granbrook Park, CT47°Weather in Graniteville, CT50°Weather in Griswoldville, CT48°Weather in Grosvenor Dale, CT44°Weather in Grove Beach, CT52°Weather in Hadlyme, CT49°Weather in Hale Court, CT54°Weather in Hamburg, CT49°Weather in Hammertown, CT44°Weather in Hanover, CT45°Weather in Harbor View, CT52°Weather in Harrisville, CT45°Weather in Hattertown, CT48°Weather in Hawks Nest Beach, CT51°