Monthly outlook for Half Hollow, NY: average high 62.2°, average low 51.3°. That is 1.8° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 2 November (77.5°), the coolest 18 October (37.9°).
62.2°/51.3°
Average high / low
+1.8°
Above normal
2 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
58.2°
59.8°
-0.9°
28 October – 6 November
68.8°
57°
+6.6°
7 November – 16 November
at normal
53°
—
October records over 66 years
84.9°2 October 2019All-time high
33.3°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — North Bay Shore (4 mi).
Mon, 1958° / 44°0
58 °
Half Hollow, Monday, 19 October
Overcast. High 58°, low 44°.
Pressure30.39 inHg
Wind9.6 mph NE
Humidity50%
Visibility6.2 mi
Dew point38°
Tue, 2064° / 51°0
64 °
Half Hollow, Tuesday, 20 October
Clear. High 64°, low 51°.
Pressure30.21 inHg
Wind12.3 mph NE
Humidity56%
Visibility6.2 mi
Dew point45°
Wed, 2156° / 48°0
56 °
Half Hollow, Wednesday, 21 October
Clear. High 56°, low 48°.
Pressure30.27 inHg
Wind11.7 mph NE
Humidity63%
Visibility6.2 mi
Dew point40°
Thu, 2261° / 45°0
61 °
Half Hollow, Thursday, 22 October
Clear. High 61°, low 45°.
Pressure30.03 inHg
Wind10.8 mph N
Humidity63%
Visibility—
Dew point41°
Fri, 2352° / 44°0
52 °
Half Hollow, Friday, 23 October
Clear. High 52°, low 44°.
Pressure30.24 inHg
Wind13.5 mph N
Humidity55%
Visibility—
Dew point32°
Sat, 2457° / 48°0
57 °
Half Hollow, Saturday, 24 October
Clear. High 57°, low 48°.
Pressure30.65 inHg
Wind8.5 mph E
Humidity36%
Visibility—
Dew point26°
Sun, 2561° / 51°0
61 °
Half Hollow, Sunday, 25 October
Mostly clear. High 61°, low 51°.
Pressure30.47 inHg
Wind12.2 mph SW
Humidity55%
Visibility—
Dew point42°
Mon, 2658° / 51°0
58 °
Half Hollow, Monday, 26 October
Partly cloudy. High 58°, low 51°.
Pressure30.24 inHg
Wind13.1 mph NW
Humidity43%
Visibility—
Dew point33°
Tue, 2762° / 49°0
62 °
Half Hollow, Tuesday, 27 October
Overcast. High 62°, low 49°.
Pressure30.21 inHg
Wind11.4 mph W
Humidity31%
Visibility—
Dew point24°
Wed, 2859° / 51°0
59 °
Half Hollow, Wednesday, 28 October
Overcast. High 59°, low 51°.
Pressure30.27 inHg
Wind7.6 mph NW
Humidity48%
Visibility—
Dew point36°
Thu, 2963° / 56°0.19
63 °
Half Hollow, Thursday, 29 October
Rain. High 63°, low 56°.
Pressure30.12 inHg
Wind14.3 mph S
Humidity76%
Visibility—
Dew point52°
Fri, 3071° / 61°0.81
71 °
Half Hollow, Friday, 30 October
Heavy rain. High 71°, low 61°.
Pressure29.74 inHg
Wind13.4 mph S
Humidity74%
Visibility—
Dew point58°
Sat, 3169° / 60°0
69 °
Half Hollow, Saturday, 31 October
Partly cloudy. High 69°, low 60°.
Pressure30.03 inHg
Wind8.4 mph SW
Humidity59%
Visibility—
Dew point51°
Sun, 0173° / 61°0
73 °
Half Hollow, Sunday, 1 November
Mostly clear. High 73°, low 61°.
Pressure29.97 inHg
Wind12.2 mph SW
Humidity67%
Visibility—
Dew point56°
Mon, 0278° / 63°0
78 °
Half Hollow, Monday, 2 November
Clear. High 78°, low 63°.
Pressure29.94 inHg
Wind16.5 mph NW
Humidity64%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0358° / 48°0.11
58 °
Half Hollow, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low48°
Average precipitation0.11 in
Chance of precipitation27%
Record high69° (2003)
Record low37° (1996)
Wed, 0456° / 47°0.06
56 °
Half Hollow, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low47°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (1975)
Record low37° (2013)
Thu, 0556° / 47°0.14
56 °
Half Hollow, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low47°
Average precipitation0.14 in
Chance of precipitation33%
Record high69° (2022)
Record low38° (1965)
Fri, 0655° / 47°0.11
55 °
Half Hollow, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.11 in
Chance of precipitation33%
Record high71° (2024)
Record low36° (1962)
Sat, 0755° / 46°0.1
55 °
Half Hollow, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.1 in
Chance of precipitation27%
Record high76° (2022)
Record low35° (1962)
Sun, 0854° / 45°0.16
54 °
Half Hollow, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.16 in
Chance of precipitation28%
Record high72° (2020)
Record low32° (2019)
Mon, 0954° / 45°0.1
54 °
Half Hollow, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.1 in
Chance of precipitation25%
Record high69° (2020)
Record low28° (2019)
Tue, 1055° / 45°0.18
55 °
Half Hollow, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.18 in
Chance of precipitation40%
Record high66° (1999)
Record low28° (2017)
Wed, 1154° / 45°0.15
54 °
Half Hollow, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.15 in
Chance of precipitation38%
Record high68° (2024)
Record low26° (2017)
Thu, 1252° / 43°0.17
52 °
Half Hollow, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.17 in
Chance of precipitation45%
Record high70° (2022)
Record low30° (2019)
Fri, 1351° / 42°0.23
51 °
Half Hollow, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.23 in
Chance of precipitation40%
Record high66° (1964)
Record low23° (2019)
Sat, 1451° / 42°0.11
51 °
Half Hollow, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation23%
Record high64° (1989)
Record low27° (2019)
Sun, 1552° / 42°0.12
52 °
Half Hollow, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.12 in
Chance of precipitation43%
Record high70° (1993)
Record low26° (1967)
Mon, 1651° / 42°0.14
51 °
Half Hollow, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.14 in
Chance of precipitation37%
Record high65° (2001)
Record low25° (1967)
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 Half Hollow, NY 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 Half Hollow, NY 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.