Weather in Groton, MA
Groton, Thursday, 15 October, 16:47
Partly cloudy. Feels like 56°. High 60°, low 49°.
Monthly outlook for Groton, MA: average high 60.7°, average low 40.7°. That is 1.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 30 October (70.9°), the coolest 18 October (32.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 59.3° | 59.1° | +0.1° |
| 25 October – 3 November | 63.1° | 55.4° | +4.3° |
| 4 November – 13 November | at normal | 51.1° | — |
October records over 66 years
0.31
Groton, Friday, 16 October
Rain. High 68°, low 48°.
0
Groton, Saturday, 17 October
Overcast. High 58°, low 36°.
0
Groton, Sunday, 18 October
Clear. High 55°, low 32°.
0Groton, Monday, 19 October
Clear. High 59°, low 37°.
0Groton, Tuesday, 20 October
Overcast. High 60°, low 39°.
0Groton, Wednesday, 21 October
Clear. High 59°, low 41°.
0Groton, Thursday, 22 October
Clear. High 55°, low 36°.
0Groton, Friday, 23 October
Clear. High 64°, low 40°.
0Groton, Saturday, 24 October
Overcast. High 55°, low 38°.
0Groton, Sunday, 25 October
Clear. High 53°, low 34°.
0Groton, Monday, 26 October
Clear. High 66°, low 37°.
0Groton, Tuesday, 27 October
Clear. High 57°, low 41°.
0Groton, Wednesday, 28 October
Overcast. High 61°, low 41°.
0Groton, Thursday, 29 October
Overcast. High 71°, low 46°.
0Groton, Friday, 30 October
Clear. High 71°, low 55°.
0.09Groton, Saturday, 31 October
Climate normal for this date — 60-year average.
0.12Groton, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Groton, Monday, 2 November
Climate normal for this date — 60-year average.
0.17
Groton, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Groton, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.15Groton, Thursday, 5 November
Climate normal for this date — 60-year average.
0.13Groton, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Groton, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09Groton, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Groton, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Groton, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.11Groton, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.13Groton, Thursday, 12 November
Climate normal for this date — 60-year average.
0.15Groton, Friday, 13 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, MA 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, MA 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
58°Weather in Annapolis, MD66°Weather in Atlanta, GA88°Weather in Augusta, ME58°Weather in Austin, TX90°Weather in Baton Rouge, LA88°Weather in Bismarck, ND45°Weather in Boise, ID67°Weather in Boston, MA62°Weather in Carson City, NV66°Weather in Charleston, WV75°Weather in Charlotte Amalie, VI86°Weather in Cheyenne, WY48°Weather in Columbia, SC89°Weather in Columbus, OH68°Weather in Concord, NH59°Weather in Denver, CO
53°Weather in Des Moines, IA55°Weather in Dover, DE64°Weather in Frankfort, KY80°Weather in Harrisburg, PA67°Weather in Hartford, CT63°Weather in Helena, MT50°Weather in Honolulu, HI82°Weather in Indianapolis, IN70°Weather in Jackson, MS90°Weather in Jefferson City, MO78°Weather in Juneau, AK45°Weather in Lansing, MI59°Weather in Lincoln, NE54°Weather in Little Rock, AR93°Weather in Madison, WI57°Weather in Montgomery, AL88°Weather in Montpelier, VT56°Weather in Nashville, TN91°Weather in Oklahoma City, OK68°Weather in Olympia, WA64°Weather in Phoenix, AZ84°Weather in Pierre, SD54°Weather in Providence, RI62°Weather in Raleigh, NC88°Weather in Richmond, VA68°Weather in Sacramento, CA80°Weather in Salem, OR76°Weather in Salt Lake City, UT62°Weather in San Juan, PR88°Weather in Santa Fe, NM63°Weather in Springfield, IL73°Weather in St. Paul, MN49°Weather in Tallahassee, FL89°Weather in Topeka, KS61°Weather in Trenton, NJ67°Weather in Washington, DC64°60°Weather in Summer Heights, MA60°Weather in Walpole Heights, MA60°Weather in West Mansfield, MA60°Weather in West Stoughton, MA60°Weather in Winnecunnet, MA61°Weather in Brayton Point, MA62°Weather in Hortonville, MA61°Weather in Merrimac Terrace, MA59°Weather in North Andover Center, MA59°Weather in Pottersville, MA62°Weather in South Groveland, MA59°Weather in South Swansea, MA62°Weather in Steep Brook, MA61°Weather in Brigadoon Village, MA60°Weather in Cliftondale, MA60°Weather in Greenwood, MA60°Weather in Hendersonville, MA61°Weather in Montrose, MA60°Weather in North Saugus, MA60°