Monthly outlook for Middle Island, NY: average high 58.8°, average low 48°. That is 0.6° above the climate normal for October. Precipitation is expected on 2 days (about 2.2 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 22 October (66.4°), the coolest 24 October (39.8°).
58.8°/48°
Average high / low
+0.6°
Above normal
2 / 5
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
60.2°
58.3°
+1°
1 November – 10 November
56.4°
55.9°
+0.3°
11 November – 20 November
at normal
51.4°
—
October records over 66 years
83.8°2 October 2019All-time high
33.8°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Brookhaven (4 mi).
Fri, 2359° / 45°0
59 °
Middle Island, Friday, 23 October
Clear. High 59°, low 45°.
Pressure30.33 inHg
Wind9.4 mph N
Humidity53%
Visibility6.2 mi
Dew point35°
Sat, 2458° / 40°0
58 °
Middle Island, Saturday, 24 October
Overcast. High 58°, low 40°.
Pressure30.50 inHg
Wind3.2 mph NW
Humidity55%
Visibility6.2 mi
Dew point37°
Sun, 2561° / 45°0
61 °
Middle Island, Sunday, 25 October
Clear. High 61°, low 45°.
Pressure30.56 inHg
Wind2.8 mph N
Humidity58%
Visibility6.2 mi
Dew point42°
Mon, 2662° / 46°0
62 °
Middle Island, Monday, 26 October
Clear. High 62°, low 46°.
Pressure30.27 inHg
Wind5.5 mph W
Humidity53%
Visibility6.2 mi
Dew point41°
Tue, 2754° / 45°0
54 °
Middle Island, Tuesday, 27 October
Clear. High 54°, low 45°.
Pressure30.39 inHg
Wind14.2 mph N
Humidity55%
Visibility—
Dew point34°
Wed, 2853° / 44°0
53 °
Middle Island, Wednesday, 28 October
Overcast. High 53°, low 44°.
Pressure30.45 inHg
Wind7.9 mph SE
Humidity71%
Visibility—
Dew point40°
Thu, 2961° / 51°0
61 °
Middle Island, Thursday, 29 October
Clear. High 61°, low 51°.
Pressure30.27 inHg
Wind9.7 mph SW
Humidity63%
Visibility—
Dew point44°
Fri, 3063° / 57°0
63 °
Middle Island, Friday, 30 October
Overcast. High 63°, low 57°.
Pressure30.18 inHg
Wind12.7 mph SW
Humidity73%
Visibility—
Dew point52°
Sat, 3165° / 57°0
65 °
Middle Island, Saturday, 31 October
Overcast. High 65°, low 57°.
Pressure30.03 inHg
Wind13.7 mph E
Humidity73%
Visibility—
Dew point52°
Sun, 0162° / 56°0.01
62 °
Middle Island, Sunday, 1 November
Light rain. High 62°, low 56°.
Pressure30.15 inHg
Wind13.3 mph E
Humidity89%
Visibility—
Dew point56°
Mon, 0259° / 50°1.78
59 °
Middle Island, Monday, 2 November
Heavy rain. High 59°, low 50°.
Pressure29.85 inHg
Wind25.1 mph NE
Humidity95%
Visibility—
Dew point55°
Tue, 0353° / 47°0.4
53 °
Middle Island, Tuesday, 3 November
Rain. High 53°, low 47°.
Pressure30.09 inHg
Wind24.4 mph NE
Humidity69%
Visibility—
Dew point38°
Wed, 0451° / 45°0
51 °
Middle Island, Wednesday, 4 November
Clear. High 51°, low 45°.
Pressure30.45 inHg
Wind12.7 mph N
Humidity55%
Visibility—
Dew point32°
Thu, 0556° / 45°0
56 °
Middle Island, Thursday, 5 November
Clear. High 56°, low 45°.
Pressure30.39 inHg
Wind16.5 mph W
Humidity45%
Visibility—
Dew point30°
Fri, 0658° / 51°0
58 °
Middle Island, Friday, 6 November
Overcast. High 58°, low 51°.
Pressure30.18 inHg
Wind16.3 mph W
Humidity64%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0755° / 46°0.1
55 °
Middle Island, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.1 in
Chance of precipitation25%
Record high75° (2022)
Record low35° (1962)
Sun, 0854° / 45°0.17
54 °
Middle Island, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.17 in
Chance of precipitation30%
Record high72° (2020)
Record low32° (2019)
Mon, 0954° / 45°0.11
54 °
Middle Island, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.11 in
Chance of precipitation23%
Record high68° (2020)
Record low29° (2019)
Tue, 1055° / 45°0.17
55 °
Middle Island, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.17 in
Chance of precipitation42%
Record high65° (1999)
Record low28° (2017)
Wed, 1154° / 45°0.15
54 °
Middle Island, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.15 in
Chance of precipitation37%
Record high68° (2024)
Record low26° (2017)
Thu, 1252° / 44°0.16
52 °
Middle Island, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.16 in
Chance of precipitation38%
Record high70° (2022)
Record low30° (2019)
Fri, 1351° / 42°0.23
51 °
Middle Island, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.23 in
Chance of precipitation40%
Record high65° (1964)
Record low24° (2019)
Sat, 1451° / 42°0.11
51 °
Middle Island, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation22%
Record high63° (1989)
Record low27° (2019)
Sun, 1552° / 42°0.12
52 °
Middle Island, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.12 in
Chance of precipitation42%
Record high69° (1993)
Record low26° (1967)
Mon, 1651° / 42°0.15
51 °
Middle Island, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.15 in
Chance of precipitation38%
Record high65° (2006)
Record low25° (1967)
Tue, 1751° / 42°0.15
51 °
Middle Island, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.15 in
Chance of precipitation33%
Record high65° (2006)
Record low31° (2019)
Wed, 1851° / 42°0.07
51 °
Middle Island, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.07 in
Chance of precipitation25%
Record high63° (2024)
Record low30° (2014)
Thu, 1951° / 42°0.07
51 °
Middle Island, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.07 in
Chance of precipitation25%
Record high62° (2021)
Record low26° (2014)
Fri, 2050° / 41°0.13
50 °
Middle Island, Friday, 20 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.13 in
Chance of precipitation28%
Record high65° (1985)
Record low29° (1984)
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 Middle Island, 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 Middle Island, 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.