Monthly outlook for Harbor View, CT: average high 61.5°, average low 50.3°. That is 0.9° above the climate normal for October. Precipitation is expected on 1 day (about 1.3 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 14 October (73°), the coolest 18 October (35.9°).
61.5°/50.3°
Average high / low
+0.9°
Above normal
1 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
62.6°
60.7°
+1°
23 October – 1 November
59.5°
57.6°
+1°
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 (12 mi).
Wed, 1473° / 61°0.01
73 °
Harbor View, Wednesday, 14 October
Light rain. High 73°, low 61°.
Pressure29.83 inHg
Wind8.7 mph W
Humidity73%
Visibility6.2 mi
Dew point66°
Thu, 1562° / 49°0
62 °
Harbor View, Thursday, 15 October
Mostly clear. High 62°, low 49°.
Pressure30.21 inHg
Wind8 mph N
Humidity47%
Visibility6.2 mi
Dew point39°
Fri, 1672° / 53°1.26
72 °
Harbor View, Friday, 16 October
Rain. High 72°, low 53°.
Pressure29.62 inHg
Wind15.1 mph SW
Humidity98%
Visibility2.0 mi
Dew point65°
Sat, 1751° / 38°0.01
51 °
Harbor View, Saturday, 17 October
Light rain. High 51°, low 38°.
Pressure30.00 inHg
Wind19 mph NW
Humidity50%
Visibility—
Dew point31°
Sun, 1855° / 36°0
55 °
Harbor View, Sunday, 18 October
Clear. High 55°, low 36°.
Pressure30.45 inHg
Wind12.6 mph SW
Humidity57%
Visibility—
Dew point34°
Mon, 1958° / 48°0
58 °
Harbor View, Monday, 19 October
Overcast. High 58°, low 48°.
Pressure30.53 inHg
Wind12.7 mph SW
Humidity54%
Visibility—
Dew point38°
Tue, 2063° / 57°0
63 °
Harbor View, Tuesday, 20 October
Overcast. High 63°, low 57°.
Pressure30.45 inHg
Wind10.9 mph SW
Humidity66%
Visibility—
Dew point49°
Wed, 2166° / 53°0
66 °
Harbor View, Wednesday, 21 October
Clear. High 66°, low 53°.
Pressure30.39 inHg
Wind7.3 mph N
Humidity58%
Visibility—
Dew point46°
Thu, 2261° / 53°0
61 °
Harbor View, Thursday, 22 October
Partly cloudy. High 61°, low 53°.
Pressure30.36 inHg
Wind8.2 mph NE
Humidity68%
Visibility—
Dew point47°
Fri, 2364° / 58°0
64 °
Harbor View, Friday, 23 October
Overcast. High 64°, low 58°.
Pressure30.33 inHg
Wind15.8 mph SW
Humidity78%
Visibility—
Dew point55°
Sat, 2469° / 61°0
69 °
Harbor View, Saturday, 24 October
Overcast. High 69°, low 61°.
Pressure29.97 inHg
Wind16.9 mph SW
Humidity77%
Visibility—
Dew point55°
Sun, 2560° / 51°0
60 °
Harbor View, Sunday, 25 October
Overcast. High 60°, low 51°.
Pressure30.00 inHg
Wind15.6 mph NW
Humidity57%
Visibility—
Dew point41°
Mon, 2655° / 46°0
55 °
Harbor View, Monday, 26 October
Overcast. High 55°, low 46°.
Pressure29.97 inHg
Wind17 mph NW
Humidity56%
Visibility—
Dew point37°
Tue, 2751° / 42°0
51 °
Harbor View, Tuesday, 27 October
Partly cloudy. High 51°, low 42°.
Pressure30.15 inHg
Wind14.9 mph NW
Humidity48%
Visibility—
Dew point28°
Wed, 2858° / 42°0
58 °
Harbor View, Wednesday, 28 October
Clear. High 58°, low 42°.
Pressure29.94 inHg
Wind15.7 mph SW
Humidity59%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2956° / 46°0.17
56 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 °
Harbor View, 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 Harbor View, 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 Harbor View, 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.