Monthly outlook for Alton, NY: average high 58.1°, average low 43.9°. That is 1.6° above the climate normal for October. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 7 days and 2.4 inches. The warmest day looks like 31 October (73.6°), the coolest 24 October (34.1°).
58.1°/43.9°
Average high / low
+1.6°
Above normal
5 / 7
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
55.5°
56.1°
-0.3°
28 October – 6 November
62.5°
53.1°
+5.2°
7 November – 16 November
at normal
47.7°
—
October records over 66 years
87.3°1 October 2019All-time high
28.4°20 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Sodus (4 mi).
Mon, 1962° / 40°0
62 °
Alton, Monday, 19 October
Clear. High 62°, low 40°.
Pressure30.45 inHg
Wind7.3 mph SW
Humidity52%
Visibility6.2 mi
Dew point42°
Tue, 2056° / 46°0
56 °
Alton, Tuesday, 20 October
Clear. High 56°, low 46°.
Pressure30.42 inHg
Wind12.1 mph NE
Humidity76%
Visibility6.2 mi
Dew point46°
Wed, 2153° / 47°0
53 °
Alton, Wednesday, 21 October
Clear. High 53°, low 47°.
Pressure30.33 inHg
Wind8.1 mph NE
Humidity69%
Visibility3.2 mi
Dew point43°
Thu, 2254° / 47°0
54 °
Alton, Thursday, 22 October
Overcast. High 54°, low 47°.
Pressure30.18 inHg
Wind11 mph N
Humidity78%
Visibility6.2 mi
Dew point46°
Fri, 2349° / 43°0
49 °
Alton, Friday, 23 October
Overcast. High 49°, low 43°.
Pressure30.47 inHg
Wind13.7 mph N
Humidity69%
Visibility—
Dew point37°
Sat, 2457° / 34°0
57 °
Alton, Saturday, 24 October
Partly cloudy. High 57°, low 34°.
Pressure30.62 inHg
Wind14.3 mph S
Humidity46%
Visibility—
Dew point26°
Sun, 2559° / 47°0.11
59 °
Alton, Sunday, 25 October
Light rain. High 59°, low 47°.
Pressure30.30 inHg
Wind16.4 mph S
Humidity47%
Visibility—
Dew point38°
Mon, 2653° / 44°0
53 °
Alton, Monday, 26 October
Clear. High 53°, low 44°.
Pressure30.39 inHg
Wind11.2 mph NW
Humidity62%
Visibility—
Dew point37°
Tue, 2749° / 37°0
49 °
Alton, Tuesday, 27 October
Partly cloudy. High 49°, low 37°.
Pressure30.42 inHg
Wind11.4 mph N
Humidity56%
Visibility—
Dew point34°
Wed, 2860° / 35°0
60 °
Alton, Wednesday, 28 October
Overcast. High 60°, low 35°.
Pressure30.33 inHg
Wind13.2 mph S
Humidity56%
Visibility—
Dew point33°
Thu, 2959° / 52°0.14
59 °
Alton, Thursday, 29 October
Light rain. High 59°, low 52°.
Pressure29.97 inHg
Wind14 mph S
Humidity83%
Visibility—
Dew point53°
Fri, 3063° / 53°0.04
63 °
Alton, Friday, 30 October
Light rain. High 63°, low 53°.
Pressure29.94 inHg
Wind10.6 mph S
Humidity71%
Visibility—
Dew point53°
Sat, 3174° / 52°0.16
74 °
Alton, Saturday, 31 October
Rain. High 74°, low 52°.
Pressure29.91 inHg
Wind21.7 mph S
Humidity70%
Visibility—
Dew point54°
Sun, 0165° / 49°0.22
65 °
Alton, Sunday, 1 November
Rain. High 65°, low 49°.
Pressure29.97 inHg
Wind17.9 mph W
Humidity52%
Visibility—
Dew point39°
Mon, 0254° / 42°0
54 °
Alton, Monday, 2 November
Clear. High 54°, low 42°.
Pressure30.39 inHg
Wind12.6 mph NW
Humidity57%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0353° / 41°0.12
53 °
Alton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.12 in
Chance of precipitation50%
Record high71° (1961)
Record low31° (2002)
Wed, 0452° / 41°0.15
52 °
Alton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.15 in
Chance of precipitation48%
Record high73° (2022)
Record low29° (1989)
Thu, 0552° / 41°0.14
52 °
Alton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.14 in
Chance of precipitation55%
Record high77° (2024)
Record low26° (1991)
Fri, 0651° / 40°0.13
51 °
Alton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.13 in
Chance of precipitation53%
Record high70° (2022)
Record low30° (2021)
Sat, 0750° / 39°0.13
50 °
Alton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.13 in
Chance of precipitation48%
Record high71° (2020)
Record low29° (2002)
Sun, 0850° / 38°0.15
50 °
Alton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.15 in
Chance of precipitation43%
Record high71° (2020)
Record low26° (2019)
Mon, 0950° / 38°0.11
50 °
Alton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation43%
Record high72° (2020)
Record low23° (2019)
Tue, 1050° / 38°0.15
50 °
Alton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.15 in
Chance of precipitation52%
Record high76° (2020)
Record low21° (2017)
Wed, 1148° / 38°0.2
48 °
Alton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.2 in
Chance of precipitation60%
Record high70° (2020)
Record low23° (2017)
Thu, 1246° / 36°0.17
46 °
Alton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.17 in
Chance of precipitation53%
Record high68° (1964)
Record low20° (2019)
Fri, 1346° / 35°0.1
46 °
Alton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.1 in
Chance of precipitation60%
Record high62° (1964)
Record low17° (2019)
Sat, 1446° / 36°0.14
46 °
Alton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.14 in
Chance of precipitation47%
Record high67° (1994)
Record low20° (2019)
Sun, 1546° / 35°0.18
46 °
Alton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.18 in
Chance of precipitation57%
Record high65° (1960)
Record low20° (1967)
Mon, 1646° / 35°0.14
46 °
Alton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.14 in
Chance of precipitation43%
Record high65° (1990)
Record low17° (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 Alton, 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 Alton, 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.