Monthly outlook for Williamson, NY: average high 59.1°, average low 48.2°. That is 1.2° above the climate normal for October. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 8 days and 2.5 inches. The warmest day looks like 13 October (72.3°), the coolest 27 October (40.8°).
59.1°/48.2°
Average high / low
+1.2°
Above normal
7 / 8
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
60.8°
57.9°
+1.6°
23 October – 1 November
56.2°
54.5°
+0.9°
2 November – 11 November
at normal
51°
—
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).
Wed, 1467° / 57°0.06
67 °
Williamson, Wednesday, 14 October
Rain. High 67°, low 57°.
Pressure29.91 inHg
Wind16.7 mph W
Humidity79%
Visibility6.2 mi
Dew point54°
Thu, 1557° / 51°0
57 °
Williamson, Thursday, 15 October
Overcast. High 57°, low 51°.
Pressure30.30 inHg
Wind7.4 mph NE
Humidity66%
Visibility6.2 mi
Dew point41°
Fri, 1657° / 51°0.42
57 °
Williamson, Friday, 16 October
Rain. High 57°, low 51°.
Pressure29.53 inHg
Wind17.9 mph NW
Humidity92%
Visibility4.8 mi
Dew point54°
Sat, 1751° / 43°0.39
51 °
Williamson, Saturday, 17 October
Rain. High 51°, low 43°.
Pressure30.27 inHg
Wind27.1 mph NW
Humidity68%
Visibility—
Dew point33°
Sun, 1858° / 44°0
58 °
Williamson, Sunday, 18 October
Clear. High 58°, low 44°.
Pressure30.33 inHg
Wind13.8 mph SW
Humidity67%
Visibility—
Dew point42°
Mon, 1963° / 42°0
63 °
Williamson, Monday, 19 October
Overcast. High 63°, low 42°.
Pressure30.33 inHg
Wind12.8 mph SW
Humidity49%
Visibility—
Dew point35°
Tue, 2059° / 51°0
59 °
Williamson, Tuesday, 20 October
Overcast. High 59°, low 51°.
Pressure30.33 inHg
Wind9.1 mph SW
Humidity67%
Visibility—
Dew point47°
Wed, 2156° / 48°0
56 °
Williamson, Wednesday, 21 October
Clear. High 56°, low 48°.
Pressure30.42 inHg
Wind9 mph NE
Humidity71%
Visibility—
Dew point45°
Thu, 2267° / 46°0
67 °
Williamson, Thursday, 22 October
Clear. High 67°, low 46°.
Pressure30.39 inHg
Wind13.3 mph S
Humidity60%
Visibility—
Dew point44°
Fri, 2371° / 52°0
71 °
Williamson, Friday, 23 October
Clear. High 71°, low 52°.
Pressure30.15 inHg
Wind17.1 mph SW
Humidity52%
Visibility—
Dew point45°
Sat, 2464° / 52°0
64 °
Williamson, Saturday, 24 October
Light rain. High 64°, low 52°.
Pressure30.09 inHg
Wind20.2 mph W
Humidity49%
Visibility—
Dew point40°
Sun, 2551° / 47°0.01
51 °
Williamson, Sunday, 25 October
Light rain. High 51°, low 47°.
Pressure30.24 inHg
Wind14.7 mph NW
Humidity60%
Visibility—
Dew point38°
Mon, 2649° / 45°0.06
49 °
Williamson, Monday, 26 October
Light rain. High 49°, low 45°.
Pressure30.09 inHg
Wind7.7 mph SW
Humidity67%
Visibility—
Dew point38°
Tue, 2751° / 41°0.1
51 °
Williamson, Tuesday, 27 October
Light rain. High 51°, low 41°.
Pressure29.71 inHg
Wind13.2 mph SW
Humidity56%
Visibility—
Dew point32°
Wed, 2850° / 45°0.1
50 °
Williamson, Wednesday, 28 October
Light rain. High 50°, low 45°.
Pressure29.38 inHg
Wind19.6 mph W
Humidity75%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1148° / 38°0.2
48 °
Williamson, 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)
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.