As of 21:58 EDT

Weather in Lyme, NH

45°

Lyme, Friday, 9 October, 21:58

Clear. Feels like 42°. High 60°, low 43°.

Pressure30.18 inHg

Wind5.5 mph NW

Humidity82%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Monthly outlook for Lyme, NH: average high 54.9°, average low 39.5°. That is 0.7° below the climate normal for October. Precipitation is expected on 8 days (about 3.2 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 12 October (67.9°), the coolest 19 October (26°).

54.9°/39.5°

Average high / low

−0.7°

Below normal

8 / 5

Wet days / normal

3.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	55.2°	57.1°	-1°
19 October – 28 October	54.3°	53.4°	+0.5°
29 October – 7 November	at normal	49.6°	—

October records over 66 years

83.1°5 October 2025All-time high

12.6°24 October 1969All-time low

Climate normals and records are computed from the nearest reference point — Thetford (7 mi).

Sat, 1057° / 37°

57 °

Lyme, Saturday, 10 October

Overcast. High 57°, low 37°.

Pressure30.47 inHg

Wind6.9 mph NW

Humidity45%

Visibility6.2 mi

Dew point30°

Sun, 1164° / 40°

0.15

64 °

Lyme, Sunday, 11 October

Rain. High 64°, low 40°.

Pressure30.30 inHg

Wind8.5 mph S

Humidity51%

Visibility6.2 mi

Dew point42°

Mon, 1268° / 47°

0.48

68 °

Lyme, Monday, 12 October

Rain. High 68°, low 47°.

Pressure29.77 inHg

Wind3.8 mph N

Humidity66%

Visibility6.2 mi

Dew point50°

Tue, 1353° / 49°

0.82

53 °

Lyme, Tuesday, 13 October

Rain. High 53°, low 49°.

Pressure29.88 inHg

Wind10.7 mph SE

Humidity97%

Visibility3.0 mi

Dew point49°

Wed, 1451° / 45°

51 °

Lyme, Wednesday, 14 October

Overcast. High 51°, low 45°.

Pressure29.88 inHg

Wind11.2 mph NW

Humidity79%

Visibility—

Dew point43°

Thu, 1551° / 38°

0.02

51 °

Lyme, Thursday, 15 October

Light rain. High 51°, low 38°.

Pressure30.09 inHg

Wind14.8 mph NW

Humidity65%

Visibility—

Dew point34°

Fri, 1646° / 40°

0.16

46 °

Lyme, Friday, 16 October

Light rain. High 46°, low 40°.

Pressure30.12 inHg

Wind6.5 mph SE

Humidity94%

Visibility—

Dew point40°

Sat, 1759° / 45°

0.21

59 °

Lyme, Saturday, 17 October

Light rain. High 59°, low 45°.

Pressure29.74 inHg

Wind10.7 mph SW

Humidity89%

Visibility—

Dew point54°

Sun, 1844° / 28°

0.04

44 °

Lyme, Sunday, 18 October

Light rain. High 44°, low 28°.

Pressure30.18 inHg

Wind12.3 mph N

Humidity82%

Visibility—

Dew point33°

Mon, 1950° / 26°

50 °

Lyme, Monday, 19 October

Clear. High 50°, low 26°.

Pressure30.42 inHg

Wind4.7 mph NW

Humidity34%

Visibility—

Dew point15°

Tue, 2050° / 31°

50 °

Lyme, Tuesday, 20 October

Clear. High 50°, low 31°.

Pressure30.62 inHg

Wind6.2 mph N

Humidity43%

Visibility—

Dew point22°

Wed, 2153° / 32°

53 °

Lyme, Wednesday, 21 October

Mostly clear. High 53°, low 32°.

Pressure30.62 inHg

Wind7.2 mph S

Humidity50%

Visibility—

Dew point27°

Thu, 2255° / 36°

55 °

Lyme, Thursday, 22 October

Overcast. High 55°, low 36°.

Pressure30.45 inHg

Wind8.2 mph S

Humidity63%

Visibility—

Dew point36°

Fri, 2357° / 45°

0.23

57 °

Lyme, Friday, 23 October

Rain. High 57°, low 45°.

Pressure30.24 inHg

Wind8.7 mph SE

Humidity83%

Visibility—

Dew point47°

Sat, 2461° / 53°

1.07

61 °

Lyme, Saturday, 24 October

Heavy rain. High 61°, low 53°.

Pressure29.91 inHg

Wind8.5 mph E

Humidity89%

Visibility—

Dew point56°

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

Sun, 2553° / 39°

0.13

53 °

Lyme, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.13 in

Chance of precipitation37%

Record high77° (1963)

Record low28° (1986)

Mon, 2652° / 38°

0.13

52 °

Lyme, Monday, 26 October

Climate normal for this date — 60-year average.

Average high52°

Average low38°

Average precipitation0.13 in

Chance of precipitation35%

Record high75° (1963)

Record low26° (2018)

Tue, 2752° / 38°

0.13

52 °

Lyme, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high52°

Average low38°

Average precipitation0.13 in

Chance of precipitation25%

Record high74° (2023)

Record low26° (1976)

Wed, 2851° / 37°

0.17

51 °

Lyme, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.17 in

Chance of precipitation37%

Record high73° (2023)

Record low26° (1974)

Thu, 2950° / 35°

0.11

50 °

Lyme, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high50°

Average low35°

Average precipitation0.11 in

Chance of precipitation35%

Record high67° (1989)

Record low26° (2013)

Fri, 3049° / 35°

0.1

49 °

Lyme, Friday, 30 October

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.1 in

Chance of precipitation25%

Record high67° (1989)

Record low27° (1962)

Sat, 3151° / 35°

0.09

51 °

Lyme, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high51°

Average low35°

Average precipitation0.09 in

Chance of precipitation27%

Record high74° (2024)

Record low22° (2020)

Sun, 0151° / 37°

0.1

51 °

Lyme, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.1 in

Chance of precipitation35%

Record high69° (1974)

Record low24° (2023)

Mon, 0251° / 37°

0.11

51 °

Lyme, Monday, 2 November

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.11 in

Chance of precipitation37%

Record high68° (2001)

Record low22° (2002)

Tue, 0350° / 36°

0.15

50 °

Lyme, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°

Average low36°

Average precipitation0.15 in

Chance of precipitation42%

Record high68° (1982)

Record low19° (2002)

Wed, 0449° / 36°

0.09

49 °

Lyme, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.09 in

Chance of precipitation25%

Record high67° (1987)

Record low23° (2020)

Thu, 0549° / 36°

0.13

49 °

Lyme, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°

Average low36°

Average precipitation0.13 in

Chance of precipitation38%

Record high72° (2022)

Record low23° (1986)

Fri, 0648° / 37°

0.12

48 °

Lyme, Friday, 6 November

Climate normal for this date — 60-year average.

Average high48°

Average low37°

Average precipitation0.12 in

Chance of precipitation40%

Record high72° (2022)

Record low23° (1962)

Sat, 0747° / 35°

0.07

47 °

Lyme, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high47°

Average low35°

Average precipitation0.07 in

Chance of precipitation27%

Record high69° (2020)

Record low10° (2002)

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, NH 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, NH 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.