Monthly outlook for Mendon, NY: average high 59.5°, average low 42.6°. That is 0.4° below the climate normal for October. Precipitation is expected on 8 days (about 1.2 inches), against a normal of 7 days and 1.9 inches. The warmest day looks like 10 October (70.1°), the coolest 20 October (29.2°).
59.5°/42.6°
Average high / low
−0.4°
Below normal
8 / 7
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
64.4°
61.8°
+1.4°
17 October – 26 October
51.4°
57.1°
-3.2°
27 October – 5 November
at normal
54.2°
—
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 (9 mi).
Thu, 0864° / 46°0.08
64 °
Mendon, Thursday, 8 October
Light rain. High 64°, low 46°.
Pressure29.85 inHg
Wind14.2 mph W
Humidity58%
Visibility6.2 mi
Dew point47°
Fri, 0961° / 42°0
61 °
Mendon, Friday, 9 October
Clear. High 61°, low 42°.
Pressure30.15 inHg
Wind12.9 mph W
Humidity59%
Visibility6.2 mi
Dew point45°
Sat, 1070° / 43°0
70 °
Mendon, Saturday, 10 October
Overcast. High 70°, low 43°.
Pressure30.42 inHg
Wind6.5 mph S
Humidity55%
Visibility6.2 mi
Dew point48°
Sun, 1168° / 57°0.08
68 °
Mendon, Sunday, 11 October
Light rain. High 68°, low 57°.
Pressure30.21 inHg
Wind8.4 mph S
Humidity55%
Visibility6.2 mi
Dew point51°
Mon, 1267° / 58°0.16
67 °
Mendon, Monday, 12 October
Rain. High 67°, low 58°.
Pressure29.83 inHg
Wind8.2 mph SW
Humidity91%
Visibility—
Dew point61°
Tue, 1362° / 42°0.5
62 °
Mendon, Tuesday, 13 October
Rain. High 62°, low 42°.
Pressure29.62 inHg
Wind18.8 mph NW
Humidity97%
Visibility—
Dew point60°
Wed, 1450° / 40°0
50 °
Mendon, Wednesday, 14 October
Light rain. High 50°, low 40°.
Pressure30.15 inHg
Wind15.3 mph NW
Humidity56%
Visibility—
Dew point32°
Thu, 1562° / 37°0
62 °
Mendon, Thursday, 15 October
Partly cloudy. High 62°, low 37°.
Pressure30.18 inHg
Wind6.3 mph SE
Humidity63%
Visibility—
Dew point38°
Fri, 1670° / 51°0.06
70 °
Mendon, Friday, 16 October
Light rain. High 70°, low 51°.
Pressure29.91 inHg
Wind15.5 mph W
Humidity77%
Visibility—
Dew point61°
Sat, 1751° / 41°0.07
51 °
Mendon, Saturday, 17 October
Light rain. High 51°, low 41°.
Pressure29.97 inHg
Wind12.5 mph NW
Humidity80%
Visibility—
Dew point43°
Sun, 1844° / 34°0
44 °
Mendon, Sunday, 18 October
Overcast. High 44°, low 34°.
Pressure30.27 inHg
Wind12.9 mph NW
Humidity46%
Visibility—
Dew point22°
Mon, 1946° / 31°0
46 °
Mendon, Monday, 19 October
Clear. High 46°, low 31°.
Pressure30.68 inHg
Wind9.4 mph N
Humidity48%
Visibility—
Dew point24°
Tue, 2054° / 29°0
54 °
Mendon, Tuesday, 20 October
Partly cloudy. High 54°, low 29°.
Pressure30.59 inHg
Wind5.9 mph E
Humidity34%
Visibility—
Dew point17°
Wed, 2158° / 37°0.01
58 °
Mendon, Wednesday, 21 October
Light rain. High 58°, low 37°.
Pressure30.18 inHg
Wind6.8 mph W
Humidity43%
Visibility—
Dew point27°
Thu, 2254° / 50°0.15
54 °
Mendon, Thursday, 22 October
Light rain. High 54°, low 50°.
Pressure29.85 inHg
Wind7.9 mph SW
Humidity90%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2357° / 43°0.13
57 °
Mendon, Friday, 23 October
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.13 in
Chance of precipitation40%
Record high78° (2020)
Record low28° (1969)
Sat, 2457° / 44°0.07
57 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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 °
Mendon, 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)
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 Mendon, 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 Mendon, 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.