Monthly outlook for Perinton, NY: average high 63.4°, average low 48.4°. That is 2° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 7 days and 1.9 inches. The warmest day looks like 16 October (76.8°), the coolest 18 October (37.1°).
63.4°/48.4°
Average high / low
+2°
Above normal
4 / 7
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
62.9°
61.2°
+0.9°
18 October – 27 October
64.2°
56.9°
+4°
28 October – 6 November
at normal
53.9°
—
October records over 66 years
87.4°4 October 2023All-time high
27.9°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Saint John Fisher College (5 mi).
Fri, 0969° / 46°0
69 °
Perinton, Friday, 9 October
Mostly clear. High 69°, low 46°.
Pressure30.15 inHg
Wind11.5 mph W
Humidity52%
Visibility6.2 mi
Dew point44°
Sat, 1065° / 43°0
65 °
Perinton, Saturday, 10 October
Overcast. High 65°, low 43°.
Pressure30.45 inHg
Wind4.3 mph SE
Humidity56%
Visibility6.2 mi
Dew point46°
Sun, 1162° / 55°0.28
62 °
Perinton, Sunday, 11 October
Rain. High 62°, low 55°.
Pressure30.21 inHg
Wind9.2 mph S
Humidity74%
Visibility6.2 mi
Dew point53°
Mon, 1266° / 56°0.04
66 °
Perinton, Monday, 12 October
Light rain. High 66°, low 56°.
Pressure29.83 inHg
Wind4.3 mph NW
Humidity83%
Visibility6.2 mi
Dew point59°
Tue, 1366° / 54°0.06
66 °
Perinton, Tuesday, 13 October
Light rain. High 66°, low 54°.
Pressure29.80 inHg
Wind11.3 mph W
Humidity86%
Visibility—
Dew point57°
Wed, 1452° / 42°0
52 °
Perinton, Wednesday, 14 October
Clear. High 52°, low 42°.
Pressure30.15 inHg
Wind9.1 mph NW
Humidity49%
Visibility—
Dew point31°
Thu, 1555° / 43°0
55 °
Perinton, Thursday, 15 October
Overcast. High 55°, low 43°.
Pressure30.30 inHg
Wind9.5 mph SE
Humidity50%
Visibility—
Dew point30°
Fri, 1677° / 55°0.31
77 °
Perinton, Friday, 16 October
Rain. High 77°, low 55°.
Pressure29.91 inHg
Wind20.1 mph W
Humidity81%
Visibility—
Dew point63°
Sat, 1752° / 43°0
52 °
Perinton, Saturday, 17 October
Overcast. High 52°, low 43°.
Pressure30.45 inHg
Wind20.5 mph NW
Humidity50%
Visibility—
Dew point27°
Sun, 1855° / 37°0
55 °
Perinton, Sunday, 18 October
Clear. High 55°, low 37°.
Pressure30.59 inHg
Wind8.1 mph SW
Humidity47%
Visibility—
Dew point28°
Mon, 1962° / 43°0
62 °
Perinton, Monday, 19 October
Overcast. High 62°, low 43°.
Pressure30.45 inHg
Wind5.6 mph SW
Humidity37%
Visibility—
Dew point28°
Tue, 2066° / 52°0.03
66 °
Perinton, Tuesday, 20 October
Light rain. High 66°, low 52°.
Pressure30.18 inHg
Wind11.8 mph SW
Humidity77%
Visibility—
Dew point51°
Wed, 2170° / 53°0.01
70 °
Perinton, Wednesday, 21 October
Light rain. High 70°, low 53°.
Pressure30.06 inHg
Wind14.7 mph SW
Humidity68%
Visibility—
Dew point53°
Thu, 2267° / 52°0
67 °
Perinton, Thursday, 22 October
Mostly clear. High 67°, low 52°.
Pressure30.09 inHg
Wind16.2 mph S
Humidity60%
Visibility—
Dew point47°
Fri, 2365° / 49°0.16
65 °
Perinton, Friday, 23 October
Light rain. High 65°, low 49°.
Pressure29.88 inHg
Wind18.6 mph S
Humidity72%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2457° / 44°0.07
57 °
Perinton, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.07 in
Chance of precipitation40%
Record high79° (1963)
Record low31° (1969)
Sun, 2557° / 44°0.13
57 °
Perinton, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.13 in
Chance of precipitation33%
Record high81° (1963)
Record low31° (1962)
Mon, 2655° / 44°0.14
55 °
Perinton, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.14 in
Chance of precipitation35%
Record high78° (1963)
Record low33° (1976)
Tue, 2756° / 43°0.13
56 °
Perinton, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.13 in
Chance of precipitation40%
Record high76° (2023)
Record low29° (1976)
Wed, 2855° / 42°0.11
55 °
Perinton, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.11 in
Chance of precipitation40%
Record high75° (2014)
Record low30° (1976)
Thu, 2953° / 41°0.12
53 °
Perinton, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.12 in
Chance of precipitation38%
Record high70° (1989)
Record low29° (1965)
Fri, 3054° / 41°0.12
54 °
Perinton, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.12 in
Chance of precipitation22%
Record high76° (2024)
Record low31° (1969)
Sat, 3156° / 41°0.11
56 °
Perinton, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.11 in
Chance of precipitation27%
Record high77° (2024)
Record low28° (2020)
Sun, 0155° / 42°0.12
55 °
Perinton, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.12 in
Chance of precipitation42%
Record high73° (2024)
Record low31° (2023)
Mon, 0255° / 42°0.17
55 °
Perinton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.17 in
Chance of precipitation45%
Record high73° (1971)
Record low27° (1965)
Tue, 0354° / 41°0.09
54 °
Perinton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.09 in
Chance of precipitation42%
Record high73° (1961)
Record low31° (1996)
Wed, 0453° / 40°0.12
53 °
Perinton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.12 in
Chance of precipitation35%
Record high73° (2015)
Record low27° (1991)
Thu, 0553° / 40°0.11
53 °
Perinton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.11 in
Chance of precipitation53%
Record high77° (2024)
Record low24° (1991)
Fri, 0652° / 40°0.11
52 °
Perinton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.11 in
Chance of precipitation42%
Record high71° (2022)
Record low29° (1991)
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 Perinton, 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 Perinton, 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.