Monthly outlook for Belmont, MA: average high 58.4°, average low 41.8°. That is 0.4° above the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 30 October (73.2°), the coolest 18 October (35.2°).
58.4°/41.8°
Average high / low
+0.4°
Above normal
1 / 4
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
56.1°
58.9°
-1.5°
27 October – 5 November
62.3°
55.7°
+3.6°
6 November – 15 November
at normal
51°
—
October records over 66 years
85.8°5 October 2007All-time high
23.7°31 October 2020All-time low
Sun, 1854° / 35°0
54 °
Belmont, Sunday, 18 October
Clear. High 54°, low 35°.
Pressure30.56 inHg
Wind1.3 mph N
Humidity46%
Visibility6.2 mi
Dew point27°
Mon, 1955° / 39°0
55 °
Belmont, Monday, 19 October
Overcast. High 55°, low 39°.
Pressure30.39 inHg
Wind6 mph NE
Humidity62%
Visibility6.2 mi
Dew point42°
Tue, 2062° / 45°0
62 °
Belmont, Tuesday, 20 October
Overcast. High 62°, low 45°.
Pressure30.21 inHg
Wind11.2 mph N
Humidity52%
Visibility6.2 mi
Dew point42°
Wed, 2153° / 40°0
53 °
Belmont, Wednesday, 21 October
Clear. High 53°, low 40°.
Pressure30.33 inHg
Wind7.8 mph NE
Humidity59%
Visibility6.2 mi
Dew point37°
Thu, 2259° / 36°0
59 °
Belmont, Thursday, 22 October
Clear. High 59°, low 36°.
Pressure30.06 inHg
Wind10.8 mph N
Humidity54%
Visibility—
Dew point35°
Fri, 2352° / 38°0
52 °
Belmont, Friday, 23 October
Clear. High 52°, low 38°.
Pressure30.36 inHg
Wind10.4 mph N
Humidity56%
Visibility—
Dew point30°
Sat, 2451° / 38°0
51 °
Belmont, Saturday, 24 October
Clear. High 51°, low 38°.
Pressure30.62 inHg
Wind7.5 mph N
Humidity48%
Visibility—
Dew point27°
Sun, 2560° / 37°0
60 °
Belmont, Sunday, 25 October
Partly cloudy. High 60°, low 37°.
Pressure30.50 inHg
Wind10.2 mph SW
Humidity55%
Visibility—
Dew point35°
Mon, 2659° / 46°0
59 °
Belmont, Monday, 26 October
Overcast. High 59°, low 46°.
Pressure30.12 inHg
Wind10.1 mph W
Humidity54%
Visibility—
Dew point41°
Tue, 2759° / 41°0
59 °
Belmont, Tuesday, 27 October
Clear. High 59°, low 41°.
Pressure30.21 inHg
Wind7.8 mph NW
Humidity40%
Visibility—
Dew point27°
Wed, 2860° / 44°0
60 °
Belmont, Wednesday, 28 October
Clear. High 60°, low 44°.
Pressure30.30 inHg
Wind4.9 mph E
Humidity46%
Visibility—
Dew point34°
Thu, 2964° / 44°0
64 °
Belmont, Thursday, 29 October
Overcast. High 64°, low 44°.
Pressure30.27 inHg
Wind10 mph SW
Humidity50%
Visibility—
Dew point38°
Fri, 3073° / 54°0
73 °
Belmont, Friday, 30 October
Overcast. High 73°, low 54°.
Pressure29.94 inHg
Wind12.8 mph SW
Humidity62%
Visibility—
Dew point51°
Sat, 3163° / 50°0.03
63 °
Belmont, Saturday, 31 October
Light rain. High 63°, low 50°.
Pressure30.03 inHg
Wind14.3 mph NW
Humidity44%
Visibility—
Dew point39°
Sun, 0154° / 47°0.46
54 °
Belmont, Sunday, 1 November
Rain. High 54°, low 47°.
Pressure30.33 inHg
Wind7.8 mph SE
Humidity58%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0256° / 42°0.09
56 °
Belmont, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.09 in
Chance of precipitation23%
Record high74° (1982)
Record low28° (1965)
Tue, 0356° / 41°0.19
56 °
Belmont, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.19 in
Chance of precipitation32%
Record high74° (2017)
Record low27° (2002)
Wed, 0455° / 41°0.04
55 °
Belmont, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.04 in
Chance of precipitation23%
Record high73° (1987)
Record low28° (2020)
Thu, 0555° / 41°0.15
55 °
Belmont, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.15 in
Chance of precipitation33%
Record high75° (2022)
Record low29° (1965)
Fri, 0653° / 41°0.12
53 °
Belmont, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.12 in
Chance of precipitation35%
Record high76° (2022)
Record low29° (2012)
Sat, 0753° / 40°0.05
53 °
Belmont, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.05 in
Chance of precipitation22%
Record high73° (2022)
Record low28° (1962)
Sun, 0852° / 38°0.09
52 °
Belmont, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2020)
Record low27° (1960)
Mon, 0952° / 38°0.1
52 °
Belmont, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation28%
Record high71° (2020)
Record low23° (2019)
Tue, 1052° / 39°0.16
52 °
Belmont, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.16 in
Chance of precipitation37%
Record high73° (2020)
Record low24° (2017)
Wed, 1151° / 38°0.11
51 °
Belmont, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.11 in
Chance of precipitation35%
Record high72° (2022)
Record low21° (2017)
Thu, 1250° / 37°0.13
50 °
Belmont, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.13 in
Chance of precipitation37%
Record high73° (2022)
Record low25° (2017)
Fri, 1348° / 36°0.16
48 °
Belmont, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.16 in
Chance of precipitation42%
Record high68° (1964)
Record low17° (2019)
Sat, 1448° / 35°0.13
48 °
Belmont, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.13 in
Chance of precipitation25%
Record high66° (1993)
Record low17° (1986)
Sun, 1549° / 36°0.12
49 °
Belmont, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.12 in
Chance of precipitation35%
Record high73° (1993)
Record low21° (1967)
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 Belmont, 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 Belmont, 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.