As of 13:43 EDT

Weather in Lyme, CT

61°

Lyme, Tuesday, 13 October, 13:43

Overcast. Feels like 61°. High 63°, low 54°.

Pressure29.97 inHg

Wind6.9 mph SE

Humidity87%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

Monthly outlook for Lyme, CT: average high 60.7°, average low 46.6°. That is 0.5° above the climate normal for October. Precipitation is expected on 2 days (about 1.4 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 14 October (72.8°), the coolest 18 October (33.2°).

60.7°/46.6°

Average high / low

+0.5°

Above normal

2 / 5

Wet days / normal

1.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 October – 22 October	62.2°	60.7°	+0.8°
23 October – 1 November	58.2°	57.6°	+0.3°
2 November – 11 November	at normal	54.8°	—

October records over 66 years

80.6°2 October 2019All-time high

29.1°31 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Old Lyme (6 mi).

Wed, 1473° / 59°

0.06

73 °

Lyme, Wednesday, 14 October

Rain. High 73°, low 59°.

Pressure29.85 inHg

Wind9.3 mph W

Humidity61%

Visibility6.2 mi

Dew point62°

Thu, 1561° / 49°

61 °

Lyme, Thursday, 15 October

Mostly clear. High 61°, low 49°.

Pressure30.24 inHg

Wind7 mph N

Humidity52%

Visibility6.2 mi

Dew point42°

Fri, 1671° / 50°

1.3

71 °

Lyme, Friday, 16 October

Heavy rain. High 71°, low 50°.

Pressure29.65 inHg

Wind13.7 mph SW

Humidity96%

Visibility1.2 mi

Dew point65°

Sat, 1751° / 38°

0.02

51 °

Lyme, Saturday, 17 October

Light rain. High 51°, low 38°.

Pressure29.94 inHg

Wind17.5 mph NW

Humidity50%

Visibility6.2 mi

Dew point26°

Sun, 1854° / 33°

54 °

Lyme, Sunday, 18 October

Clear. High 54°, low 33°.

Pressure30.47 inHg

Wind9.9 mph SW

Humidity51%

Visibility—

Dew point29°

Mon, 1962° / 46°

62 °

Lyme, Monday, 19 October

Overcast. High 62°, low 46°.

Pressure30.42 inHg

Wind15.9 mph SW

Humidity63%

Visibility—

Dew point44°

Tue, 2065° / 54°

65 °

Lyme, Tuesday, 20 October

Overcast. High 65°, low 54°.

Pressure30.36 inHg

Wind11.3 mph SW

Humidity60%

Visibility—

Dew point47°

Wed, 2163° / 46°

63 °

Lyme, Wednesday, 21 October

Clear. High 63°, low 46°.

Pressure30.42 inHg

Wind7.3 mph N

Humidity38%

Visibility—

Dew point31°

Thu, 2259° / 44°

59 °

Lyme, Thursday, 22 October

Partly cloudy. High 59°, low 44°.

Pressure30.50 inHg

Wind6.7 mph S

Humidity69%

Visibility—

Dew point45°

Fri, 2363° / 51°

63 °

Lyme, Friday, 23 October

Overcast. High 63°, low 51°.

Pressure30.33 inHg

Wind13.6 mph SW

Humidity68%

Visibility—

Dew point48°

Sat, 2470° / 56°

70 °

Lyme, Saturday, 24 October

Clear. High 70°, low 56°.

Pressure30.09 inHg

Wind11.5 mph W

Humidity67%

Visibility—

Dew point53°

Sun, 2560° / 49°

60 °

Lyme, Sunday, 25 October

Mostly clear. High 60°, low 49°.

Pressure30.00 inHg

Wind9 mph N

Humidity50%

Visibility—

Dew point39°

Mon, 2656° / 43°

56 °

Lyme, Monday, 26 October

Clear. High 56°, low 43°.

Pressure29.91 inHg

Wind10.8 mph W

Humidity52%

Visibility—

Dew point33°

Tue, 2750° / 41°

50 °

Lyme, Tuesday, 27 October

Clear. High 50°, low 41°.

Pressure30.09 inHg

Wind16.5 mph NW

Humidity45%

Visibility—

Dew point27°

Wed, 2850° / 34°

50 °

Lyme, Wednesday, 28 October

Overcast. High 50°, low 34°.

Pressure30.42 inHg

Wind7.3 mph NW

Humidity43%

Visibility—

Dew point22°

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

Thu, 2956° / 46°

0.17

56 °

Lyme, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high56°

Average low46°

Average precipitation0.17 in

Chance of precipitation25%

Record high71° (1984)

Record low33° (1965)

Fri, 3056° / 45°

0.15

56 °

Lyme, Friday, 30 October

Climate normal for this date — 60-year average.

Average high56°

Average low45°

Average precipitation0.15 in

Chance of precipitation23%

Record high66° (1971)

Record low35° (2020)

Sat, 3156° / 46°

0.07

56 °

Lyme, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high56°

Average low46°

Average precipitation0.07 in

Chance of precipitation23%

Record high72° (2024)

Record low29° (2020)

Sun, 0158° / 47°

0.12

58 °

Lyme, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high58°

Average low47°

Average precipitation0.12 in

Chance of precipitation28%

Record high74° (2024)

Record low37° (2010)

Mon, 0257° / 47°

0.08

57 °

Lyme, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°

Average low47°

Average precipitation0.08 in

Chance of precipitation30%

Record high69° (2022)

Record low31° (1965)

Tue, 0357° / 46°

0.16

57 °

Lyme, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high57°

Average low46°

Average precipitation0.16 in

Chance of precipitation30%

Record high69° (2017)

Record low35° (1980)

Wed, 0456° / 46°

0.04

56 °

Lyme, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°

Average low46°

Average precipitation0.04 in

Chance of precipitation27%

Record high68° (1975)

Record low34° (2013)

Thu, 0556° / 46°

0.15

56 °

Lyme, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high56°

Average low46°

Average precipitation0.15 in

Chance of precipitation40%

Record high70° (2022)

Record low34° (1965)

Fri, 0655° / 45°

0.11

55 °

Lyme, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°

Average low45°

Average precipitation0.11 in

Chance of precipitation35%

Record high71° (2024)

Record low33° (2012)

Sat, 0755° / 44°

0.07

55 °

Lyme, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low44°

Average precipitation0.07 in

Chance of precipitation25%

Record high72° (2022)

Record low32° (1962)

Sun, 0853° / 43°

0.13

53 °

Lyme, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°

Average low43°

Average precipitation0.13 in

Chance of precipitation32%

Record high71° (2020)

Record low30° (2019)

Mon, 0953° / 43°

0.09

53 °

Lyme, Monday, 9 November

Climate normal for this date — 60-year average.

Average high53°

Average low43°

Average precipitation0.09 in

Chance of precipitation22%

Record high67° (1975)

Record low26° (2019)

Tue, 1054° / 43°

0.18

54 °

Lyme, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high54°

Average low43°

Average precipitation0.18 in

Chance of precipitation40%

Record high65° (1999)

Record low27° (2017)

Wed, 1153° / 43°

0.16

53 °

Lyme, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high53°

Average low43°

Average precipitation0.16 in

Chance of precipitation35%

Record high67° (2022)

Record low23° (2017)

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 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 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.