Monthly outlook for Commack, NY: average high 61.7°, average low 51°. That is 0.4° below the climate normal for October. Precipitation is expected on 6 days (about 2.4 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 8 October (72.5°), the coolest 7 October (40.2°).
61.7°/51°
Average high / low
−0.4°
Below normal
6 / 4
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
63.3°
63.6°
-0.2°
17 October – 26 October
59.2°
60°
-0.4°
27 October – 5 November
at normal
57.2°
—
October records over 66 years
89.6°2 October 2019All-time high
32.7°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Smithtown (4 mi).
Thu, 0873° / 54°0
73 °
Commack, Thursday, 8 October
Clear. High 73°, low 54°.
Pressure29.85 inHg
Wind9.3 mph W
Humidity65%
Visibility6.2 mi
Dew point56°
Fri, 0969° / 55°0
69 °
Commack, Friday, 9 October
Clear. High 69°, low 55°.
Pressure30.15 inHg
Wind9.2 mph W
Humidity50%
Visibility6.2 mi
Dew point46°
Sat, 1063° / 54°0
63 °
Commack, Saturday, 10 October
Overcast. High 63°, low 54°.
Pressure30.50 inHg
Wind2.3 mph NE
Humidity52%
Visibility6.2 mi
Dew point43°
Sun, 1166° / 56°0.2
66 °
Commack, Sunday, 11 October
Rain. High 66°, low 56°.
Pressure30.39 inHg
Wind8.7 mph SE
Humidity66%
Visibility—
Dew point53°
Mon, 1272° / 64°0.94
72 °
Commack, Monday, 12 October
Heavy rain. High 72°, low 64°.
Pressure29.68 inHg
Wind12.4 mph SE
Humidity95%
Visibility—
Dew point68°
Tue, 1354° / 46°0.59
54 °
Commack, Tuesday, 13 October
Rain. High 54°, low 46°.
Pressure30.00 inHg
Wind21.9 mph NE
Humidity74%
Visibility—
Dew point40°
Wed, 1454° / 45°0.41
54 °
Commack, Wednesday, 14 October
Rain. High 54°, low 45°.
Pressure30.09 inHg
Wind20.6 mph NE
Humidity77%
Visibility—
Dew point40°
Thu, 1555° / 49°0
55 °
Commack, Thursday, 15 October
Overcast. High 55°, low 49°.
Pressure30.24 inHg
Wind18.7 mph NE
Humidity73%
Visibility—
Dew point43°
Fri, 1663° / 55°0
63 °
Commack, Friday, 16 October
Overcast. High 63°, low 55°.
Pressure30.15 inHg
Wind12.9 mph NE
Humidity86%
Visibility—
Dew point54°
Sat, 1765° / 60°0.2
65 °
Commack, Saturday, 17 October
Light rain. High 65°, low 60°.
Pressure29.77 inHg
Wind10.3 mph E
Humidity92%
Visibility—
Dew point62°
Sun, 1858° / 50°0.05
58 °
Commack, Sunday, 18 October
Light rain. High 58°, low 50°.
Pressure29.77 inHg
Wind25.3 mph W
Humidity53%
Visibility—
Dew point36°
Mon, 1958° / 46°0
58 °
Commack, Monday, 19 October
Clear. High 58°, low 46°.
Pressure30.21 inHg
Wind15.6 mph W
Humidity46%
Visibility—
Dew point31°
Tue, 2056° / 47°0
56 °
Commack, Tuesday, 20 October
Clear. High 56°, low 47°.
Pressure30.27 inHg
Wind17.2 mph NW
Humidity48%
Visibility—
Dew point33°
Wed, 2159° / 45°0
59 °
Commack, Wednesday, 21 October
Clear. High 59°, low 45°.
Pressure30.27 inHg
Wind9.6 mph NW
Humidity37%
Visibility—
Dew point25°
Thu, 2258° / 50°0
58 °
Commack, Thursday, 22 October
Overcast. High 58°, low 50°.
Pressure30.09 inHg
Wind6.6 mph SW
Humidity50%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2359° / 50°0.07
59 °
Commack, Friday, 23 October
Climate normal for this date — 60-year average.
Average high59°
Average low50°
Average precipitation0.07 in
Chance of precipitation22%
Record high71° (2007)
Record low34° (1969)
Sat, 2460° / 50°0.13
60 °
Commack, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high60°
Average low50°
Average precipitation0.13 in
Chance of precipitation33%
Record high72° (2017)
Record low34° (1969)
Sun, 2560° / 50°0.14
60 °
Commack, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high60°
Average low50°
Average precipitation0.14 in
Chance of precipitation38%
Record high75° (2022)
Record low39° (1962)
Mon, 2658° / 49°0.16
58 °
Commack, Monday, 26 October
Climate normal for this date — 60-year average.
Average high58°
Average low49°
Average precipitation0.16 in
Chance of precipitation35%
Record high76° (2023)
Record low37° (1962)
Tue, 2758° / 49°0.16
58 °
Commack, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low49°
Average precipitation0.16 in
Chance of precipitation30%
Record high74° (2023)
Record low33° (1976)
Wed, 2858° / 48°0.17
58 °
Commack, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low48°
Average precipitation0.17 in
Chance of precipitation30%
Record high78° (2023)
Record low34° (1976)
Thu, 2957° / 47°0.19
57 °
Commack, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low47°
Average precipitation0.19 in
Chance of precipitation25%
Record high73° (1984)
Record low34° (1965)
Fri, 3056° / 46°0.11
56 °
Commack, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.11 in
Chance of precipitation25%
Record high72° (2024)
Record low36° (2011)
Sat, 3157° / 47°0.06
57 °
Commack, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low47°
Average precipitation0.06 in
Chance of precipitation20%
Record high77° (2024)
Record low35° (2020)
Sun, 0158° / 49°0.13
58 °
Commack, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low49°
Average precipitation0.13 in
Chance of precipitation28%
Record high78° (2024)
Record low38° (1976)
Mon, 0258° / 48°0.07
58 °
Commack, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low48°
Average precipitation0.07 in
Chance of precipitation32%
Record high69° (1971)
Record low32° (1965)
Tue, 0358° / 47°0.11
58 °
Commack, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.11 in
Chance of precipitation28%
Record high72° (2017)
Record low37° (1996)
Wed, 0456° / 46°0.06
56 °
Commack, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.06 in
Chance of precipitation23%
Record high70° (1975)
Record low36° (2013)
Thu, 0556° / 47°0.13
56 °
Commack, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low47°
Average precipitation0.13 in
Chance of precipitation32%
Record high73° (2022)
Record low37° (1965)
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 Commack, 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 Commack, 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.