Monthly outlook for Marcellus, NY: average high 56.3°, average low 42.6°. That is 0.2° below the climate normal for October. Precipitation is expected on 9 days (about 2.1 inches), against a normal of 7 days and 2.4 inches. The warmest day looks like 13 October (74.8°), the coolest 19 October (27.6°).
56.3°/42.6°
Average high / low
−0.2°
Below normal
9 / 7
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
57.6°
57.7°
-0.1°
20 October – 29 October
54.2°
54°
+0.1°
30 October – 8 November
at normal
50.8°
—
October records over 66 years
84.2°4 October 2023All-time high
26.1°20 October 1972All-time low
Sun, 1162° / 46°0.36
62 °
Marcellus, Sunday, 11 October
Rain. High 62°, low 46°.
Pressure30.21 inHg
Wind7.5 mph SE
Humidity65%
Visibility6.2 mi
Dew point49°
Mon, 1268° / 47°0.11
68 °
Marcellus, Monday, 12 October
Rain. High 68°, low 47°.
Pressure29.88 inHg
Wind5.1 mph NW
Humidity75%
Visibility6.2 mi
Dew point57°
Tue, 1375° / 59°0.67
75 °
Marcellus, Tuesday, 13 October
Rain. High 75°, low 59°.
Pressure29.77 inHg
Wind11 mph S
Humidity80%
Visibility6.2 mi
Dew point63°
Wed, 1464° / 54°0.12
64 °
Marcellus, Wednesday, 14 October
Light rain. High 64°, low 54°.
Pressure29.94 inHg
Wind11.9 mph NW
Humidity84%
Visibility6.2 mi
Dew point53°
Thu, 1553° / 43°0
53 °
Marcellus, Thursday, 15 October
Overcast. High 53°, low 43°.
Pressure30.36 inHg
Wind9.7 mph NW
Humidity61%
Visibility—
Dew point38°
Fri, 1657° / 43°0.52
57 °
Marcellus, Friday, 16 October
Rain. High 57°, low 43°.
Pressure29.74 inHg
Wind25.8 mph S
Humidity93%
Visibility—
Dew point47°
Sat, 1749° / 40°0.05
49 °
Marcellus, Saturday, 17 October
Light rain. High 49°, low 40°.
Pressure29.77 inHg
Wind18.5 mph SW
Humidity64%
Visibility—
Dew point35°
Sun, 1839° / 31°0.03
39 °
Marcellus, Sunday, 18 October
Light snow. High 39°, low 31°.
Pressure30.24 inHg
Wind13.5 mph NW
Humidity77%
Visibility—
Dew point28°
Mon, 1947° / 28°0
47 °
Marcellus, Monday, 19 October
Partly cloudy. High 47°, low 28°.
Pressure30.53 inHg
Wind7.5 mph NW
Humidity55%
Visibility—
Dew point25°
Tue, 2056° / 34°0
56 °
Marcellus, Tuesday, 20 October
Clear. High 56°, low 34°.
Pressure30.56 inHg
Wind6.2 mph SE
Humidity48%
Visibility—
Dew point28°
Wed, 2156° / 39°0
56 °
Marcellus, Wednesday, 21 October
Overcast. High 56°, low 39°.
Pressure30.45 inHg
Wind13.5 mph S
Humidity44%
Visibility—
Dew point29°
Thu, 2256° / 47°0.02
56 °
Marcellus, Thursday, 22 October
Light rain. High 56°, low 47°.
Pressure30.09 inHg
Wind19.6 mph S
Humidity69%
Visibility—
Dew point45°
Fri, 2358° / 46°0.1
58 °
Marcellus, Friday, 23 October
Light rain. High 58°, low 46°.
Pressure29.91 inHg
Wind17.2 mph W
Humidity67%
Visibility—
Dew point43°
Sat, 2449° / 44°0.06
49 °
Marcellus, Saturday, 24 October
Light rain. High 49°, low 44°.
Pressure30.00 inHg
Wind17.1 mph W
Humidity62%
Visibility—
Dew point36°
Sun, 2550° / 42°0.06
50 °
Marcellus, Sunday, 25 October
Light rain. High 50°, low 42°.
Pressure30.12 inHg
Wind11.2 mph SE
Humidity69%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2653° / 42°0.15
53 °
Marcellus, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.15 in
Chance of precipitation40%
Record high75° (1963)
Record low31° (1976)
Tue, 2753° / 41°0.15
53 °
Marcellus, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.15 in
Chance of precipitation43%
Record high75° (2023)
Record low27° (1976)
Wed, 2853° / 40°0.15
53 °
Marcellus, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.15 in
Chance of precipitation45%
Record high74° (1984)
Record low27° (1976)
Thu, 2951° / 39°0.12
51 °
Marcellus, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation45%
Record high68° (1989)
Record low27° (1965)
Fri, 3051° / 39°0.1
51 °
Marcellus, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.1 in
Chance of precipitation28%
Record high74° (2024)
Record low28° (2008)
Sat, 3153° / 39°0.13
53 °
Marcellus, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.13 in
Chance of precipitation33%
Record high75° (2024)
Record low27° (1972)
Sun, 0153° / 40°0.14
53 °
Marcellus, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.14 in
Chance of precipitation48%
Record high72° (2024)
Record low29° (1965)
Mon, 0252° / 40°0.21
52 °
Marcellus, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.21 in
Chance of precipitation48%
Record high71° (1982)
Record low25° (1965)
Tue, 0352° / 39°0.11
52 °
Marcellus, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.11 in
Chance of precipitation48%
Record high70° (1982)
Record low28° (2002)
Wed, 0450° / 39°0.13
50 °
Marcellus, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.13 in
Chance of precipitation47%
Record high70° (2015)
Record low28° (2013)
Thu, 0551° / 39°0.13
51 °
Marcellus, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.13 in
Chance of precipitation55%
Record high72° (2022)
Record low25° (1991)
Fri, 0650° / 39°0.15
50 °
Marcellus, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.15 in
Chance of precipitation45%
Record high73° (2022)
Record low26° (1962)
Sat, 0748° / 37°0.11
48 °
Marcellus, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.11 in
Chance of precipitation52%
Record high68° (1975)
Record low18° (1962)
Sun, 0848° / 36°0.14
48 °
Marcellus, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.14 in
Chance of precipitation45%
Record high68° (2020)
Record low21° (1976)
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 Marcellus, 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 Marcellus, 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.