As of 17:58 EST

Weather in Old Lyme, CT

62°

Old Lyme, Wednesday, 4 November, 17:58

Clear. Feels like 61°. High 74°, low 51°.

Pressure30.06 inHg

Wind7.2 mph SW

Humidity83%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

Monthly outlook for Old Lyme, CT: average high 54.5°, average low 43.4°. That is 1.2° above the climate normal for November. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 4 November (73.9°), the coolest 16 November (34.9°).

54.5°/43.4°

Average high / low

+1.2°

Above normal

4 / 5

Wet days / normal

1.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
4 November – 13 November	59.1°	53.6°	+3.1°
14 November – 23 November	46.7°	49.5°	-1.5°
24 November – 3 December	at normal	47.6°	—

November records over 66 years

74.3°1 November 2024All-time high

14.5°23 November 2018All-time low

Thu, 0572° / 58°

0.14

72 °

Old Lyme, Thursday, 5 November

Rain. High 72°, low 58°.

Pressure29.94 inHg

Wind11 mph S

Humidity79%

Visibility4.3 mi

Dew point62°

Fri, 0668° / 60°

0.8

68 °

Old Lyme, Friday, 6 November

Rain. High 68°, low 60°.

Pressure29.88 inHg

Wind4.3 mph SW

Humidity85%

Visibility6.2 mi

Dew point64°

Sat, 0763° / 53°

0.19

63 °

Old Lyme, Saturday, 7 November

Rain. High 63°, low 53°.

Pressure29.77 inHg

Wind6 mph N

Humidity72%

Visibility6.2 mi

Dew point53°

Sun, 0860° / 47°

0.21

60 °

Old Lyme, Sunday, 8 November

Rain. High 60°, low 47°.

Pressure29.74 inHg

Wind13.8 mph NW

Humidity54%

Visibility6.2 mi

Dew point42°

Mon, 0952° / 44°

52 °

Old Lyme, Monday, 9 November

Overcast. High 52°, low 44°.

Pressure29.71 inHg

Wind16.9 mph NW

Humidity55%

Visibility—

Dew point35°

Tue, 1054° / 39°

54 °

Old Lyme, Tuesday, 10 November

Overcast. High 54°, low 39°.

Pressure29.94 inHg

Wind11.8 mph SW

Humidity70%

Visibility—

Dew point38°

Wed, 1156° / 47°

56 °

Old Lyme, Wednesday, 11 November

Clear. High 56°, low 47°.

Pressure29.80 inHg

Wind13 mph N

Humidity56%

Visibility—

Dew point37°

Thu, 1249° / 40°

49 °

Old Lyme, Thursday, 12 November

Clear. High 49°, low 40°.

Pressure29.62 inHg

Wind18.7 mph NW

Humidity65%

Visibility—

Dew point37°

Fri, 1343° / 36°

43 °

Old Lyme, Friday, 13 November

Clear. High 43°, low 36°.

Pressure29.77 inHg

Wind13 mph NW

Humidity53%

Visibility—

Dew point24°

Sat, 1444° / 36°

44 °

Old Lyme, Saturday, 14 November

Clear. High 44°, low 36°.

Pressure29.85 inHg

Wind9.3 mph W

Humidity48%

Visibility—

Dew point21°

Sun, 1545° / 36°

45 °

Old Lyme, Sunday, 15 November

Overcast. High 45°, low 36°.

Pressure29.83 inHg

Wind13.6 mph NW

Humidity47%

Visibility—

Dew point22°

Mon, 1645° / 35°

45 °

Old Lyme, Monday, 16 November

Partly cloudy. High 45°, low 35°.

Pressure29.94 inHg

Wind14.7 mph NW

Humidity63%

Visibility—

Dew point28°

Tue, 1747° / 37°

47 °

Old Lyme, Tuesday, 17 November

Clear. High 47°, low 37°.

Pressure30.24 inHg

Wind11.3 mph N

Humidity59%

Visibility—

Dew point29°

Wed, 1847° / 35°

47 °

Old Lyme, Wednesday, 18 November

Clear. High 47°, low 35°.

Pressure30.42 inHg

Wind10.1 mph N

Humidity63%

Visibility—

Dew point29°

Thu, 1952° / 39°

52 °

Old Lyme, Thursday, 19 November

Clear. High 52°, low 39°.

Pressure30.27 inHg

Wind10.4 mph NW

Humidity64%

Visibility—

Dew point33°

From day 17 onward the outlook is built from 60-year climate statistics

Fri, 2049° / 39°

0.13

49 °

Old Lyme, Friday, 20 November

Climate normal for this date — 60-year average.

Average high49°

Average low39°

Average precipitation0.13 in

Chance of precipitation32%

Record high64° (1985)

Record low20° (1986)

Sat, 2149° / 38°

0.11

49 °

Old Lyme, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high49°

Average low38°

Average precipitation0.11 in

Chance of precipitation30%

Record high60° (2020)

Record low20° (1987)

Sun, 2248° / 38°

0.15

48 °

Old Lyme, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high48°

Average low38°

Average precipitation0.15 in

Chance of precipitation37%

Record high60° (1994)

Record low15° (2018)

Mon, 2347° / 37°

0.13

47 °

Old Lyme, Monday, 23 November

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.13 in

Chance of precipitation25%

Record high60° (1992)

Record low15° (2018)

Tue, 2448° / 38°

0.1

48 °

Old Lyme, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high48°

Average low38°

Average precipitation0.1 in

Chance of precipitation30%

Record high62° (1979)

Record low19° (1989)

Wed, 2548° / 37°

0.15

48 °

Old Lyme, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high48°

Average low37°

Average precipitation0.15 in

Chance of precipitation27%

Record high62° (1979)

Record low22° (2013)

Thu, 2649° / 39°

0.2

49 °

Old Lyme, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high49°

Average low39°

Average precipitation0.2 in

Chance of precipitation43%

Record high62° (1979)

Record low25° (1978)

Fri, 2749° / 39°

0.13

49 °

Old Lyme, Friday, 27 November

Climate normal for this date — 60-year average.

Average high49°

Average low39°

Average precipitation0.13 in

Chance of precipitation35%

Record high61° (1986)

Record low23° (1978)

Sat, 2849° / 39°

0.19

49 °

Old Lyme, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high49°

Average low39°

Average precipitation0.19 in

Chance of precipitation35%

Record high61° (1990)

Record low19° (2002)

Sun, 2948° / 38°

0.08

48 °

Old Lyme, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high48°

Average low38°

Average precipitation0.08 in

Chance of precipitation27%

Record high62° (2011)

Record low26° (1989)

Mon, 3046° / 37°

0.14

46 °

Old Lyme, Monday, 30 November

Climate normal for this date — 60-year average.

Average high46°

Average low37°

Average precipitation0.14 in

Chance of precipitation35%

Record high63° (2020)

Record low24° (2013)

Tue, 0146° / 36°

0.13

46 °

Old Lyme, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high46°

Average low36°

Average precipitation0.13 in

Chance of precipitation40%

Record high63° (2001)

Record low21° (1967)

Wed, 0246° / 36°

0.14

46 °

Old Lyme, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high46°

Average low36°

Average precipitation0.14 in

Chance of precipitation28%

Record high60° (2006)

Record low17° (1989)

Thu, 0346° / 35°

0.16

46 °

Old Lyme, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high46°

Average low35°

Average precipitation0.16 in

Chance of precipitation28%

Record high60° (2009)

Record low15° (1976)

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.