Monthly outlook for New Haven, CT: average high 59.1°, average low 42.8°. That is 0.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.9 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 20 October (67.4°), the coolest 29 October (35.3°).
59.1°/42.8°
Average high / low
+0.2°
Above normal
1 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
61°
59.5°
+0.8°
29 October – 7 November
55.8°
56.5°
-0.4°
8 November – 17 November
at normal
51.9°
—
October records over 66 years
87.4°2 October 2019All-time high
28.6°31 October 2020All-time low
Tue, 2067° / 43°0
67 °
New Haven, Tuesday, 20 October
Clear. High 67°, low 43°.
Pressure30.24 inHg
Wind11.1 mph N
Humidity51%
Visibility6.2 mi
Dew point44°
Wed, 2160° / 39°0
60 °
New Haven, Wednesday, 21 October
Mostly clear. High 60°, low 39°.
Pressure30.18 inHg
Wind12.2 mph N
Humidity57%
Visibility6.2 mi
Dew point38°
Thu, 2261° / 42°0
61 °
New Haven, Thursday, 22 October
Clear. High 61°, low 42°.
Pressure29.91 inHg
Wind10.1 mph NW
Humidity45%
Visibility6.2 mi
Dew point37°
Fri, 2352° / 39°0
52 °
New Haven, Friday, 23 October
Clear. High 52°, low 39°.
Pressure30.21 inHg
Wind12.8 mph NW
Humidity52%
Visibility6.2 mi
Dew point29°
Sat, 2457° / 36°0
57 °
New Haven, Saturday, 24 October
Clear. High 57°, low 36°.
Pressure30.47 inHg
Wind7.5 mph NW
Humidity51%
Visibility—
Dew point31°
Sun, 2562° / 38°0
62 °
New Haven, Sunday, 25 October
Clear. High 62°, low 38°.
Pressure30.56 inHg
Wind8.7 mph SW
Humidity52%
Visibility—
Dew point35°
Mon, 2666° / 51°0
66 °
New Haven, Monday, 26 October
Overcast. High 66°, low 51°.
Pressure30.27 inHg
Wind11.8 mph SW
Humidity58%
Visibility—
Dew point44°
Tue, 2761° / 56°0.02
61 °
New Haven, Tuesday, 27 October
Light rain. High 61°, low 56°.
Pressure30.15 inHg
Wind12.3 mph SW
Humidity80%
Visibility—
Dew point52°
Wed, 2860° / 42°0
60 °
New Haven, Wednesday, 28 October
Overcast. High 60°, low 42°.
Pressure29.91 inHg
Wind15.9 mph NW
Humidity62%
Visibility—
Dew point40°
Thu, 2949° / 35°0
49 °
New Haven, Thursday, 29 October
Clear. High 49°, low 35°.
Pressure30.00 inHg
Wind14.1 mph W
Humidity44%
Visibility—
Dew point21°
Fri, 3051° / 37°0
51 °
New Haven, Friday, 30 October
Clear. High 51°, low 37°.
Pressure30.18 inHg
Wind12.4 mph W
Humidity47%
Visibility—
Dew point25°
Sat, 3158° / 42°0
58 °
New Haven, Saturday, 31 October
Clear. High 58°, low 42°.
Pressure30.30 inHg
Wind10.2 mph W
Humidity41%
Visibility—
Dew point28°
Sun, 0157° / 42°0
57 °
New Haven, Sunday, 1 November
Clear. High 57°, low 42°.
Pressure30.50 inHg
Wind9.2 mph S
Humidity63%
Visibility—
Dew point38°
Mon, 0261° / 51°0
61 °
New Haven, Monday, 2 November
Overcast. High 61°, low 51°.
Pressure30.27 inHg
Wind9.5 mph SW
Humidity57%
Visibility—
Dew point42°
Tue, 0359° / 56°0.92
59 °
New Haven, Tuesday, 3 November
Rain. High 59°, low 56°.
Pressure30.03 inHg
Wind9.4 mph SE
Humidity85%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0456° / 45°0.05
56 °
New 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 °
New 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 °
New 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 °
New 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 °
New 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 °
New 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 °
New 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 °
New 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 °
New 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 °
New 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 °
New 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)
Sun, 1551° / 40°0.12
51 °
New Haven, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.12 in
Chance of precipitation42%
Record high71° (1993)
Record low24° (1967)
Mon, 1651° / 40°0.14
51 °
New Haven, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.14 in
Chance of precipitation35%
Record high66° (2001)
Record low23° (1967)
Tue, 1750° / 39°0.13
50 °
New Haven, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.13 in
Chance of precipitation30%
Record high65° (2024)
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 New 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 New 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.