Monthly outlook for Alton, NY: average high 53.3°, average low 40°. That is 0.8° below the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 7 days and 2.3 inches. The warmest day looks like 26 October (65.4°), the coolest 3 November (33.7°).
53.3°/40°
Average high / low
−0.8°
Below normal
3 / 7
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
56.1°
55.3°
+0.4°
30 October – 8 November
48.6°
52.4°
-2.1°
9 November – 18 November
at normal
46.8°
—
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).
Wed, 2158° / 36°0
58 °
Alton, Wednesday, 21 October
Clear. High 58°, low 36°.
Pressure30.30 inHg
Wind6.3 mph N
Humidity72%
Visibility1.7 mi
Dew point44°
Thu, 2255° / 47°0
55 °
Alton, Thursday, 22 October
Overcast. High 55°, low 47°.
Pressure30.18 inHg
Wind12.7 mph N
Humidity81%
Visibility6.2 mi
Dew point47°
Fri, 2351° / 42°0
51 °
Alton, Friday, 23 October
Overcast. High 51°, low 42°.
Pressure30.45 inHg
Wind7.9 mph N
Humidity67%
Visibility6.2 mi
Dew point37°
Sat, 2455° / 37°0
55 °
Alton, Saturday, 24 October
Clear. High 55°, low 37°.
Pressure30.59 inHg
Wind6.6 mph S
Humidity68%
Visibility—
Dew point37°
Sun, 2562° / 41°0
62 °
Alton, Sunday, 25 October
Clear. High 62°, low 41°.
Pressure30.50 inHg
Wind7.5 mph S
Humidity59%
Visibility—
Dew point39°
Mon, 2665° / 52°0
65 °
Alton, Monday, 26 October
Overcast. High 65°, low 52°.
Pressure30.27 inHg
Wind8.3 mph S
Humidity65%
Visibility—
Dew point48°
Tue, 2760° / 45°0.05
60 °
Alton, Tuesday, 27 October
Light rain. High 60°, low 45°.
Pressure30.00 inHg
Wind17.4 mph NW
Humidity78%
Visibility—
Dew point50°
Wed, 2843° / 35°0.17
43 °
Alton, Wednesday, 28 October
Snow. High 43°, low 35°.
Pressure30.24 inHg
Wind17 mph NW
Humidity60%
Visibility—
Dew point27°
Thu, 2950° / 34°0
50 °
Alton, Thursday, 29 October
Mostly clear. High 50°, low 34°.
Pressure30.03 inHg
Wind21.7 mph SW
Humidity56%
Visibility—
Dew point28°
Fri, 3049° / 37°0
49 °
Alton, Friday, 30 October
Light rain. High 49°, low 37°.
Pressure30.03 inHg
Wind13 mph SW
Humidity56%
Visibility—
Dew point30°
Sat, 3151° / 42°0.02
51 °
Alton, Saturday, 31 October
Light rain. High 51°, low 42°.
Pressure30.06 inHg
Wind13.8 mph W
Humidity64%
Visibility—
Dew point36°
Sun, 0145° / 41°0.05
45 °
Alton, Sunday, 1 November
Light rain. High 45°, low 41°.
Pressure30.21 inHg
Wind13.8 mph NW
Humidity69%
Visibility—
Dew point34°
Mon, 0249° / 38°0
49 °
Alton, Monday, 2 November
Light rain. High 49°, low 38°.
Pressure30.27 inHg
Wind12.1 mph W
Humidity65%
Visibility—
Dew point33°
Tue, 0351° / 34°0
51 °
Alton, Tuesday, 3 November
Clear. High 51°, low 34°.
Pressure30.24 inHg
Wind7.4 mph SE
Humidity55%
Visibility—
Dew point28°
Wed, 0446° / 36°0.01
46 °
Alton, Wednesday, 4 November
Light rain. High 46°, low 36°.
Pressure30.06 inHg
Wind8.1 mph N
Humidity59%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1745° / 35°0.14
45 °
Alton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.14 in
Chance of precipitation55%
Record high62° (1987)
Record low13° (2019)
Wed, 1846° / 35°0.07
46 °
Alton, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.07 in
Chance of precipitation43%
Record high64° (2016)
Record low19° (2014)
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.