Weather in Old Lyme, CT
Old Lyme, Tuesday, 20 October, 00:02
Clear. Feels like 44°. High 67°, low 43°.
Monthly outlook for Old Lyme, CT: average high 58.2°, average low 45.4°. That is 0.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 20 October (66.6°), the coolest 24 October (34.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 58.9° | 58.6° | +0.2° |
| 30 October – 8 November | 56.8° | 55.7° | +0.6° |
| 9 November – 18 November | at normal | 51.5° | — |
October records over 66 years
0
Old Lyme, Wednesday, 21 October
Overcast. High 58°, low 39°.
0
Old Lyme, Thursday, 22 October
Clear. High 63°, low 43°.
0Old Lyme, Friday, 23 October
Clear. High 52°, low 41°.
0Old Lyme, Saturday, 24 October
Clear. High 58°, low 35°.
0Old Lyme, Sunday, 25 October
Clear. High 61°, low 38°.
0Old Lyme, Monday, 26 October
Overcast. High 61°, low 54°.
0Old Lyme, Tuesday, 27 October
Overcast. High 61°, low 57°.
0Old Lyme, Wednesday, 28 October
Overcast. High 60°, low 45°.
0Old Lyme, Thursday, 29 October
Clear. High 49°, low 37°.
0Old Lyme, Friday, 30 October
Clear. High 50°, low 38°.
0Old Lyme, Saturday, 31 October
Clear. High 56°, low 46°.
0Old Lyme, Sunday, 1 November
Clear. High 56°, low 43°.
0Old Lyme, Monday, 2 November
Overcast. High 59°, low 54°.
0.61
Old Lyme, Tuesday, 3 November
Rain. High 60°, low 57°.
0.22Old Lyme, Wednesday, 4 November
Rain. High 60°, low 58°.
0.15
Old Lyme, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11Old Lyme, Friday, 6 November
Climate normal for this date — 60-year average.
0.07
Old Lyme, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13Old Lyme, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Old Lyme, Monday, 9 November
Climate normal for this date — 60-year average.
0.18Old Lyme, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.16Old Lyme, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.16Old Lyme, Thursday, 12 November
Climate normal for this date — 60-year average.
0.21Old Lyme, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Old Lyme, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Old Lyme, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Old Lyme, Monday, 16 November
Climate normal for this date — 60-year average.
0.15Old Lyme, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Old Lyme, Wednesday, 18 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 Old Lyme, 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 Old Lyme, 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
45°Weather in Annapolis, MD53°Weather in Atlanta, GA53°Weather in Augusta, ME40°Weather in Austin, TX66°Weather in Baton Rouge, LA61°Weather in Bismarck, ND49°Weather in Boise, ID59°Weather in Boston, MA43°Weather in Carson City, NV60°Weather in Charleston, WV45°Weather in Charlotte Amalie, VI82°Weather in Cheyenne, WY50°Weather in Columbia, SC48°Weather in Columbus, OH48°Weather in Concord, NH40°Weather in Denver, CO56°Weather in Des Moines, IA52°Weather in Dover, DE48°Weather in Frankfort, KY48°Weather in Harrisburg, PA47°Weather in Hartford, CT45°Weather in Helena, MT49°Weather in Honolulu, HI80°Weather in Indianapolis, IN49°Weather in Jackson, MS60°Weather in Jefferson City, MO58°Weather in Juneau, AK37°Weather in Lansing, MI47°Weather in Lincoln, NE55°Weather in Little Rock, AR59°Weather in Madison, WI48°Weather in Montgomery, AL49°Weather in Montpelier, VT42°Weather in Nashville, TN53°Weather in Oklahoma City, OK60°Weather in Olympia, WA51°Weather in Phoenix, AZ79°Weather in Pierre, SD52°Weather in Providence, RI43°Weather in Raleigh, NC49°Weather in Richmond, VA47°Weather in Sacramento, CA61°Weather in Salem, OR54°Weather in Salt Lake City, UT60°Weather in San Juan, PR78°Weather in Santa Fe, NM54°Weather in Springfield, IL48°Weather in St. Paul, MN53°Weather in Tallahassee, FL56°Weather in Topeka, KS54°Weather in Trenton, NJ46°Weather in Washington, DC52°48°Weather in Riverdale, CT43°Weather in Robertsville, CT45°Weather in Romford, CT41°Weather in Roxbury Falls, CT44°Weather in Sanfordtown, CT45°Weather in Scantic, CT43°Weather in South Canaan, CT48°Weather in South Ellsworth, CT44°Weather in South Kent, CT45°Weather in South Norfolk, CT44°Weather in Thames View, CT47°Weather in Tokeneke, CT49°Weather in Town Hill, CT43°Weather in Versailles, CT42°Weather in West Avon, CT44°Weather in West Hartland, CT43°Weather in West Redding, CT45°Weather in West Thompson, CT41°Weather in West Woods, CT48°