Monthly outlook for North Haven, CT: average high 58.3°, average low 42.3°. That is 0.5° below the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 16 October (67.6°), the coolest 18 October (36.4°).
58.3°/42.3°
Average high / low
−0.5°
Below normal
2 / 4
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
58.9°
60.4°
-0.8°
26 October – 4 November
57.4°
57.4°
-0°
5 November – 14 November
at normal
53.2°
—
October records over 66 years
87.4°2 October 2019All-time high
28.6°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — New Haven (6 mi).
Sat, 1753° / 37°0
53 °
North Haven, Saturday, 17 October
Light rain. High 53°, low 37°.
Pressure30.15 inHg
Wind13.8 mph NW
Humidity48%
Visibility6.2 mi
Dew point30°
Sun, 1855° / 36°0
55 °
North Haven, Sunday, 18 October
Clear. High 55°, low 36°.
Pressure30.59 inHg
Wind4.2 mph N
Humidity45%
Visibility6.2 mi
Dew point27°
Mon, 1961° / 38°0
61 °
North Haven, Monday, 19 October
Clear. High 61°, low 38°.
Pressure30.47 inHg
Wind5.2 mph NE
Humidity49%
Visibility6.2 mi
Dew point38°
Tue, 2064° / 45°0
64 °
North Haven, Tuesday, 20 October
Clear. High 64°, low 45°.
Pressure30.27 inHg
Wind9.9 mph NE
Humidity56%
Visibility6.2 mi
Dew point44°
Wed, 2158° / 43°0
58 °
North Haven, Wednesday, 21 October
Clear. High 58°, low 43°.
Pressure30.36 inHg
Wind11.9 mph NE
Humidity58%
Visibility—
Dew point37°
Thu, 2256° / 41°0
56 °
North Haven, Thursday, 22 October
Overcast. High 56°, low 41°.
Pressure30.30 inHg
Wind12.7 mph NE
Humidity67%
Visibility—
Dew point39°
Fri, 2366° / 49°0
66 °
North Haven, Friday, 23 October
Light rain. High 66°, low 49°.
Pressure30.09 inHg
Wind10.1 mph N
Humidity66%
Visibility—
Dew point45°
Sat, 2454° / 43°0
54 °
North Haven, Saturday, 24 October
Partly cloudy. High 54°, low 43°.
Pressure30.36 inHg
Wind14 mph NE
Humidity67%
Visibility—
Dew point41°
Sun, 2555° / 38°0
55 °
North Haven, Sunday, 25 October
Clear. High 55°, low 38°.
Pressure30.45 inHg
Wind10.2 mph N
Humidity52%
Visibility—
Dew point29°
Mon, 2662° / 39°0
62 °
North Haven, Monday, 26 October
Overcast. High 62°, low 39°.
Pressure30.24 inHg
Wind5.8 mph SW
Humidity35%
Visibility—
Dew point26°
Tue, 2759° / 44°0.03
59 °
North Haven, Tuesday, 27 October
Light rain. High 59°, low 44°.
Pressure29.88 inHg
Wind13.1 mph W
Humidity61%
Visibility—
Dew point45°
Wed, 2856° / 41°0
56 °
North Haven, Wednesday, 28 October
Clear. High 56°, low 41°.
Pressure30.06 inHg
Wind13.8 mph NW
Humidity52%
Visibility—
Dew point34°
Thu, 2956° / 37°0
56 °
North Haven, Thursday, 29 October
Partly cloudy. High 56°, low 37°.
Pressure30.15 inHg
Wind6.1 mph NW
Humidity41%
Visibility—
Dew point24°
Fri, 3058° / 51°0.54
58 °
North Haven, Friday, 30 October
Rain. High 58°, low 51°.
Pressure29.59 inHg
Wind13.7 mph S
Humidity91%
Visibility—
Dew point53°
Sat, 3153° / 42°0
53 °
North Haven, Saturday, 31 October
Overcast. High 53°, low 42°.
Pressure29.74 inHg
Wind15.8 mph NW
Humidity65%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0158° / 47°0.12
58 °
North Haven, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.12 in
Chance of precipitation30%
Record high79° (2024)
Record low36° (2023)
Mon, 0258° / 47°0.07
58 °
North Haven, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.07 in
Chance of precipitation33%
Record high69° (1971)
Record low30° (2023)
Tue, 0358° / 46°0.11
58 °
North Haven, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.11 in
Chance of precipitation30%
Record high71° (2003)
Record low34° (1980)
Wed, 0456° / 45°0.05
56 °
North Haven, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.05 in
Chance of precipitation25%
Record high70° (1975)
Record low33° (2020)
Thu, 0556° / 45°0.14
56 °
North Haven, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.14 in
Chance of precipitation35%
Record high72° (2022)
Record low35° (1965)
Fri, 0655° / 45°0.09
55 °
North Haven, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.09 in
Chance of precipitation32%
Record high74° (2024)
Record low33° (2012)
Sat, 0755° / 44°0.09
55 °
North Haven, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.09 in
Chance of precipitation27%
Record high75° (2022)
Record low32° (1962)
Sun, 0853° / 42°0.16
53 °
North Haven, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.16 in
Chance of precipitation32%
Record high72° (2020)
Record low29° (2019)
Mon, 0954° / 42°0.09
54 °
North Haven, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.09 in
Chance of precipitation23%
Record high70° (1975)
Record low24° (2019)
Tue, 1054° / 43°0.15
54 °
North Haven, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.15 in
Chance of precipitation38%
Record high68° (2020)
Record low26° (2017)
Wed, 1153° / 42°0.15
53 °
North Haven, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.15 in
Chance of precipitation40%
Record high68° (2020)
Record low23° (2017)
Thu, 1252° / 41°0.15
52 °
North Haven, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.15 in
Chance of precipitation38%
Record high71° (2022)
Record low26° (2019)
Fri, 1350° / 40°0.21
50 °
North Haven, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.21 in
Chance of precipitation42%
Record high67° (1964)
Record low23° (2019)
Sat, 1450° / 40°0.09
50 °
North Haven, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.09 in
Chance of precipitation22%
Record high64° (1993)
Record low24° (2019)
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 North Haven, 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 North Haven, 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.