Monthly outlook for Wellesley, MA: average high 58.6°, average low 41.9°. That is 0.7° below the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 14 October (75.3°), the coolest 18 October (30.1°).
58.6°/41.9°
Average high / low
−0.7°
Below normal
4 / 4
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
60.7°
60.9°
-0.1°
22 October – 31 October
55.2°
57.3°
-1.2°
1 November – 10 November
at normal
54.5°
—
October records over 66 years
86.2°5 October 2007All-time high
19.9°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Watertown Town (7 mi).
Tue, 1360° / 48°0.03
60 °
Wellesley, Tuesday, 13 October
Light rain. High 60°, low 48°.
Pressure30.03 inHg
Wind7.3 mph E
Humidity84%
Visibility6.2 mi
Dew point51°
Wed, 1475° / 59°0
75 °
Wellesley, Wednesday, 14 October
Overcast. High 75°, low 59°.
Pressure29.74 inHg
Wind12.5 mph W
Humidity63%
Visibility6.2 mi
Dew point62°
Thu, 1559° / 46°0
59 °
Wellesley, Thursday, 15 October
Clear. High 59°, low 46°.
Pressure30.18 inHg
Wind9.8 mph N
Humidity47%
Visibility6.2 mi
Dew point36°
Fri, 1654° / 44°0.27
54 °
Wellesley, Friday, 16 October
Rain. High 54°, low 44°.
Pressure29.83 inHg
Wind18.2 mph NW
Humidity96%
Visibility—
Dew point49°
Sat, 1748° / 37°0
48 °
Wellesley, Saturday, 17 October
Clear. High 48°, low 37°.
Pressure29.91 inHg
Wind18.9 mph NW
Humidity54%
Visibility—
Dew point30°
Sun, 1851° / 30°0
51 °
Wellesley, Sunday, 18 October
Mostly clear. High 51°, low 30°.
Pressure30.50 inHg
Wind8.6 mph SW
Humidity26%
Visibility—
Dew point9°
Mon, 1962° / 40°0
62 °
Wellesley, Monday, 19 October
Clear. High 62°, low 40°.
Pressure30.45 inHg
Wind11.1 mph SW
Humidity41%
Visibility—
Dew point30°
Tue, 2067° / 44°0
67 °
Wellesley, Tuesday, 20 October
Overcast. High 67°, low 44°.
Pressure30.24 inHg
Wind10.1 mph W
Humidity48%
Visibility—
Dew point41°
Wed, 2157° / 41°0
57 °
Wellesley, Wednesday, 21 October
Overcast. High 57°, low 41°.
Pressure30.47 inHg
Wind6 mph E
Humidity57%
Visibility—
Dew point36°
Thu, 2258° / 39°0
58 °
Wellesley, Thursday, 22 October
Partly cloudy. High 58°, low 39°.
Pressure30.59 inHg
Wind6.7 mph S
Humidity50%
Visibility—
Dew point33°
Fri, 2365° / 44°0.03
65 °
Wellesley, Friday, 23 October
Light rain. High 65°, low 44°.
Pressure30.24 inHg
Wind14.7 mph SW
Humidity57%
Visibility—
Dew point41°
Sat, 2454° / 39°0.2
54 °
Wellesley, Saturday, 24 October
Rain. High 54°, low 39°.
Pressure30.03 inHg
Wind15 mph NW
Humidity49%
Visibility—
Dew point35°
Sun, 2554° / 35°0
54 °
Wellesley, Sunday, 25 October
Clear. High 54°, low 35°.
Pressure30.24 inHg
Wind6.6 mph W
Humidity38%
Visibility—
Dew point20°
Mon, 2645° / 39°0.46
45 °
Wellesley, Monday, 26 October
Rain. High 45°, low 39°.
Pressure29.85 inHg
Wind6.2 mph N
Humidity67%
Visibility—
Dew point34°
Tue, 2754° / 37°0
54 °
Wellesley, Tuesday, 27 October
Clear. High 54°, low 37°.
Pressure29.94 inHg
Wind8.7 mph N
Humidity67%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2857° / 42°0.11
57 °
Wellesley, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.11 in
Chance of precipitation33%
Record high78° (2023)
Record low29° (1976)
Thu, 2955° / 42°0.14
55 °
Wellesley, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.14 in
Chance of precipitation25%
Record high71° (2015)
Record low30° (1965)
Fri, 3055° / 41°0.15
55 °
Wellesley, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.15 in
Chance of precipitation30%
Record high71° (1989)
Record low22° (2020)
Sat, 3156° / 41°0.08
56 °
Wellesley, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.08 in
Chance of precipitation22%
Record high77° (2024)
Record low20° (2020)
Sun, 0157° / 43°0.11
57 °
Wellesley, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.11 in
Chance of precipitation32%
Record high77° (2024)
Record low33° (1964)
Mon, 0257° / 43°0.09
57 °
Wellesley, Monday, 2 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.09 in
Chance of precipitation27%
Record high74° (1982)
Record low28° (1965)
Tue, 0356° / 42°0.19
56 °
Wellesley, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.19 in
Chance of precipitation33%
Record high74° (2017)
Record low27° (2002)
Wed, 0455° / 41°0.04
55 °
Wellesley, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.04 in
Chance of precipitation22%
Record high74° (1987)
Record low29° (2020)
Thu, 0555° / 41°0.15
55 °
Wellesley, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.15 in
Chance of precipitation37%
Record high75° (2022)
Record low29° (1965)
Fri, 0654° / 42°0.12
54 °
Wellesley, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.12 in
Chance of precipitation35%
Record high76° (2022)
Record low29° (2012)
Sat, 0754° / 40°0.06
54 °
Wellesley, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.06 in
Chance of precipitation23%
Record high74° (2022)
Record low28° (1962)
Sun, 0852° / 39°0.1
52 °
Wellesley, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.1 in
Chance of precipitation30%
Record high67° (2020)
Record low27° (1960)
Mon, 0952° / 39°0.1
52 °
Wellesley, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.1 in
Chance of precipitation32%
Record high71° (2020)
Record low24° (2019)
Tue, 1053° / 39°0.15
53 °
Wellesley, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.15 in
Chance of precipitation37%
Record high73° (2020)
Record low25° (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 Wellesley, MA 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 Wellesley, MA 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.