Monthly outlook for Williamson, NY: average high 59.6°, average low 47.8°. That is 1.2° above the climate normal for October. Precipitation is expected on 8 days (about 2.9 inches), against a normal of 8 days and 2.4 inches. The warmest day looks like 13 October (73.7°), the coolest 18 October (38.6°).
59.6°/47.8°
Average high / low
+1.2°
Above normal
8 / 8
Wet days / normal
2.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
60.4°
58.5°
+1.1°
22 October – 31 October
58.2°
54.6°
+2°
1 November – 10 November
at normal
51.6°
—
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 (7 mi).
Tue, 1374° / 57°0.61
74 °
Williamson, Tuesday, 13 October
Heavy rain. High 74°, low 57°.
Pressure29.77 inHg
Wind11 mph SW
Humidity81%
Visibility6.2 mi
Dew point65°
Wed, 1466° / 58°0.04
66 °
Williamson, Wednesday, 14 October
Light rain. High 66°, low 58°.
Pressure29.94 inHg
Wind16.8 mph W
Humidity77%
Visibility6.2 mi
Dew point55°
Thu, 1558° / 53°0
58 °
Williamson, Thursday, 15 October
Overcast. High 58°, low 53°.
Pressure30.27 inHg
Wind6.7 mph NE
Humidity68%
Visibility6.2 mi
Dew point43°
Fri, 1656° / 50°1.02
56 °
Williamson, Friday, 16 October
Rain. High 56°, low 50°.
Pressure29.68 inHg
Wind8.9 mph NW
Humidity90%
Visibility4.3 mi
Dew point52°
Sat, 1753° / 43°0.17
53 °
Williamson, Saturday, 17 October
Light rain. High 53°, low 43°.
Pressure30.30 inHg
Wind28.2 mph NW
Humidity60%
Visibility—
Dew point31°
Sun, 1856° / 39°0
56 °
Williamson, Sunday, 18 October
Partly cloudy. High 56°, low 39°.
Pressure30.45 inHg
Wind16 mph SW
Humidity59%
Visibility—
Dew point35°
Mon, 1966° / 43°0
66 °
Williamson, Monday, 19 October
Clear. High 66°, low 43°.
Pressure30.36 inHg
Wind14.2 mph SW
Humidity47%
Visibility—
Dew point36°
Tue, 2059° / 54°0.02
59 °
Williamson, Tuesday, 20 October
Light rain. High 59°, low 54°.
Pressure30.30 inHg
Wind10.3 mph SW
Humidity83%
Visibility—
Dew point51°
Wed, 2154° / 45°0
54 °
Williamson, Wednesday, 21 October
Overcast. High 54°, low 45°.
Pressure30.47 inHg
Wind14.2 mph NE
Humidity67%
Visibility—
Dew point40°
Thu, 2254° / 39°0
54 °
Williamson, Thursday, 22 October
Clear. High 54°, low 39°.
Pressure30.62 inHg
Wind10.3 mph S
Humidity54%
Visibility—
Dew point30°
Fri, 2360° / 47°0.28
60 °
Williamson, Friday, 23 October
Rain. High 60°, low 47°.
Pressure30.24 inHg
Wind18.2 mph SW
Humidity71%
Visibility—
Dew point48°
Sat, 2457° / 47°0.04
57 °
Williamson, Saturday, 24 October
Light rain. High 57°, low 47°.
Pressure30.33 inHg
Wind14.1 mph NE
Humidity69%
Visibility—
Dew point40°
Sun, 2567° / 53°0.19
67 °
Williamson, Sunday, 25 October
Rain. High 67°, low 53°.
Pressure29.83 inHg
Wind19.3 mph SW
Humidity65%
Visibility—
Dew point54°
Mon, 2656° / 42°0.22
56 °
Williamson, Monday, 26 October
Light rain. High 56°, low 42°.
Pressure29.68 inHg
Wind21.5 mph NW
Humidity86%
Visibility—
Dew point44°
Tue, 2755° / 40°0.33
55 °
Williamson, Tuesday, 27 October
Rain. High 55°, low 40°.
Pressure29.38 inHg
Wind29.5 mph NW
Humidity69%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2854° / 42°0.15
54 °
Williamson, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.15 in
Chance of precipitation47%
Record high73° (1984)
Record low30° (1976)
Thu, 2952° / 42°0.12
52 °
Williamson, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.12 in
Chance of precipitation42%
Record high69° (1982)
Record low30° (1965)
Fri, 3053° / 41°0.12
53 °
Williamson, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.12 in
Chance of precipitation28%
Record high76° (2024)
Record low33° (1966)
Sat, 3155° / 42°0.13
55 °
Williamson, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.13 in
Chance of precipitation35%
Record high77° (2024)
Record low30° (1988)
Sun, 0155° / 43°0.15
55 °
Williamson, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.15 in
Chance of precipitation48%
Record high73° (2024)
Record low33° (1965)
Mon, 0254° / 42°0.23
54 °
Williamson, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.23 in
Chance of precipitation52%
Record high72° (1971)
Record low28° (1965)
Tue, 0353° / 41°0.12
53 °
Williamson, 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 °
Williamson, 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 °
Williamson, 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 °
Williamson, 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 °
Williamson, 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 °
Williamson, 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 °
Williamson, 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 °
Williamson, 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)
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 Williamson, 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 Williamson, 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.