As of 12:47 EDT

Weather in Hadlyme, CT

57°Current weather

Hadlyme, Wednesday, 21 October, 12:47

Overcast. Feels like 55°. High 58°, low 45°.

Pressure30.18 inHg
Wind7 mph N
Humidity57%
Visibility6.2 mi
Dew point42°

Monthly outlook for Hadlyme, CT: average high 59°, average low 44.3°. That is 0.8° above the climate normal for October. Precipitation is expected on 1 day (about 0.9 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 29 October (65.8°), the coolest 24 October (35°).

59°/44.3°
Average high / low
+0.8°
Above normal
1 / 4
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
21 October – 30 October59.8°58.2°+0.9°
31 October – 9 November57.7°55.5°+1.2°
10 November – 19 Novemberat normal51.1°—

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 (9 mi).

Thu, 2265° / 45°0Overcast
65 °Overcast

Hadlyme, Thursday, 22 October

Overcast. High 65°, low 45°.

Pressure29.94 inHg
Wind11.2 mph N
Humidity45%
Visibility6.2 mi
Dew point36°
Fri, 2355° / 39°0Clear
55 °Clear

Hadlyme, Friday, 23 October

Clear. High 55°, low 39°.

Pressure30.39 inHg
Wind8 mph N
Humidity48%
Visibility6.2 mi
Dew point32°
Sat, 2457° / 35°0Mostly clear
57 °Mostly clear

Hadlyme, Saturday, 24 October

Mostly clear. High 57°, low 35°.

Pressure30.56 inHg
Wind3.8 mph NW
Humidity43%
Visibility6.2 mi
Dew point32°
Sun, 2562° / 37°0Clear
62 °Clear

Hadlyme, Sunday, 25 October

Clear. High 62°, low 37°.

Pressure30.53 inHg
Wind2.4 mph NW
Humidity46%
Visibility6.2 mi
Dew point37°
Mon, 2663° / 40°0Clear
63 °Clear

Hadlyme, Monday, 26 October

Clear. High 63°, low 40°.

Pressure30.36 inHg
Wind7 mph NW
Humidity52%
Visibility—
Dew point38°
Tue, 2755° / 43°0Clear
55 °Clear

Hadlyme, Tuesday, 27 October

Clear. High 55°, low 43°.

Pressure30.39 inHg
Wind8.9 mph NE
Humidity42%
Visibility—
Dew point29°
Wed, 2858° / 43°0Overcast
58 °Overcast

Hadlyme, Wednesday, 28 October

Overcast. High 58°, low 43°.

Pressure30.47 inHg
Wind9.3 mph S
Humidity61%
Visibility—
Dew point41°
Thu, 2966° / 53°0Partly cloudy
66 °Partly cloudy

Hadlyme, Thursday, 29 October

Partly cloudy. High 66°, low 53°.

Pressure30.24 inHg
Wind13.1 mph SW
Humidity73%
Visibility—
Dew point53°
Fri, 3058° / 43°0Light rain
58 °Light rain

Hadlyme, Friday, 30 October

Light rain. High 58°, low 43°.

Pressure30.18 inHg
Wind11.1 mph NE
Humidity67%
Visibility—
Dew point47°
Sat, 3154° / 39°0Clear
54 °Clear

Hadlyme, Saturday, 31 October

Clear. High 54°, low 39°.

Pressure30.56 inHg
Wind10.5 mph NE
Humidity44%
Visibility—
Dew point27°
Sun, 0153° / 39°0Overcast
53 °Overcast

Hadlyme, Sunday, 1 November

Overcast. High 53°, low 39°.

Pressure30.68 inHg
Wind9.9 mph SE
Humidity62%
Visibility—
Dew point37°
Mon, 0262° / 54°0Overcast
62 °Overcast

Hadlyme, Monday, 2 November

Overcast. High 62°, low 54°.

Pressure30.45 inHg
Wind8.2 mph SE
Humidity78%
Visibility—
Dew point53°
Tue, 0364° / 52°0Overcast
64 °Overcast

Hadlyme, Tuesday, 3 November

Overcast. High 64°, low 52°.

Pressure30.33 inHg
Wind9.1 mph SE
Humidity69%
Visibility—
Dew point51°
Wed, 0457° / 52°0Light rain
57 °Light rain

Hadlyme, Wednesday, 4 November

Light rain. High 57°, low 52°.

Pressure30.24 inHg
Wind15.6 mph E
Humidity83%
Visibility—
Dew point50°
Thu, 0557° / 51°0.89Rain
57 °Rain

Hadlyme, Thursday, 5 November

Rain. High 57°, low 51°.

Pressure30.09 inHg
Wind19.6 mph E
Humidity96%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0655° / 45°0.11Climate normal
55 °Climate normal

Hadlyme, 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°0.07Climate normal
55 °Climate normal

Hadlyme, 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°0.13Climate normal
53 °Climate normal

Hadlyme, 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°0.09Climate normal
53 °Climate normal

Hadlyme, 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°0.18Climate normal
54 °Climate normal

Hadlyme, 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°0.16Climate normal
53 °Climate normal

Hadlyme, 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)
Thu, 1252° / 41°0.16Climate normal
52 °Climate normal

Hadlyme, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high52°
Average low41°
Average precipitation0.16 in
Chance of precipitation38%
Record high71° (2022)
Record low28° (2019)
Fri, 1351° / 40°0.21Climate normal
51 °Climate normal

Hadlyme, Friday, 13 November

Climate normal for this date — 60-year average.

Average high51°
Average low40°
Average precipitation0.21 in
Chance of precipitation40%
Record high65° (1964)
Record low22° (2019)
Sat, 1450° / 40°0.09Climate normal
50 °Climate normal

Hadlyme, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high50°
Average low40°
Average precipitation0.09 in
Chance of precipitation22%
Record high62° (1989)
Record low25° (1986)
Sun, 1551° / 40°0.13Climate normal
51 °Climate normal

Hadlyme, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high51°
Average low40°
Average precipitation0.13 in
Chance of precipitation42%
Record high67° (1993)
Record low24° (1967)
Mon, 1651° / 40°0.15Climate normal
51 °Climate normal

Hadlyme, Monday, 16 November

Climate normal for this date — 60-year average.

Average high51°
Average low40°
Average precipitation0.15 in
Chance of precipitation35%
Record high64° (2001)
Record low23° (1967)
Tue, 1750° / 40°0.15Climate normal
50 °Climate normal

Hadlyme, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high50°
Average low40°
Average precipitation0.15 in
Chance of precipitation28%
Record high65° (2024)
Record low26° (2019)
Wed, 1850° / 40°0.08Climate normal
50 °Climate normal

Hadlyme, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high50°
Average low40°
Average precipitation0.08 in
Chance of precipitation23%
Record high63° (2024)
Record low27° (2020)
Thu, 1950° / 39°0.06Climate normal
50 °Climate normal

Hadlyme, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high50°
Average low39°
Average precipitation0.06 in
Chance of precipitation23%
Record high62° (2021)
Record low24° (1986)

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 Hadlyme, 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 Hadlyme, 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.