Monthly outlook for Allerton, MA: average high 59.8°, average low 48.7°. That is 0° below the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 24 October (68.7°), the coolest 18 October (36°).
59.8°/48.7°
Average high / low
−0°
Below normal
4 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
58.8°
60.5°
-0.9°
21 October – 30 October
61.5°
57.6°
+2.1°
31 October – 9 November
at normal
54.8°
—
October records over 66 years
82.8°5 October 2007All-time high
28.8°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Winthrop (7 mi).
Mon, 1265° / 48°0.3
65 °
Allerton, Monday, 12 October
Heavy rain. High 65°, low 48°.
Pressure29.77 inHg
Wind2.3 mph NW
Humidity79%
Visibility6.2 mi
Dew point52°
Tue, 1363° / 48°0
63 °
Allerton, Tuesday, 13 October
Overcast. High 63°, low 48°.
Pressure29.97 inHg
Wind11 mph SE
Humidity82%
Visibility6.2 mi
Dew point53°
Wed, 1465° / 55°0.01
65 °
Allerton, Wednesday, 14 October
Light rain. High 65°, low 55°.
Pressure29.83 inHg
Wind3.5 mph NE
Humidity85%
Visibility6.2 mi
Dew point51°
Thu, 1559° / 53°0
59 °
Allerton, Thursday, 15 October
Partly cloudy. High 59°, low 53°.
Pressure30.15 inHg
Wind9.7 mph NW
Humidity60%
Visibility6.2 mi
Dew point43°
Fri, 1661° / 49°0.41
61 °
Allerton, Friday, 16 October
Rain. High 61°, low 49°.
Pressure29.74 inHg
Wind26.7 mph NW
Humidity90%
Visibility—
Dew point51°
Sat, 1749° / 41°0.02
49 °
Allerton, Saturday, 17 October
Light rain. High 49°, low 41°.
Pressure29.85 inHg
Wind23 mph NW
Humidity51%
Visibility—
Dew point30°
Sun, 1847° / 36°0
47 °
Allerton, Sunday, 18 October
Clear. High 47°, low 36°.
Pressure30.45 inHg
Wind22.4 mph NW
Humidity41%
Visibility—
Dew point19°
Mon, 1960° / 39°0
60 °
Allerton, Monday, 19 October
Mostly clear. High 60°, low 39°.
Pressure30.47 inHg
Wind15.9 mph SW
Humidity41%
Visibility—
Dew point29°
Tue, 2060° / 49°0
60 °
Allerton, Tuesday, 20 October
Partly cloudy. High 60°, low 49°.
Pressure30.39 inHg
Wind11.1 mph NE
Humidity53%
Visibility—
Dew point38°
Wed, 2152° / 48°0
52 °
Allerton, Wednesday, 21 October
Overcast. High 52°, low 48°.
Pressure30.71 inHg
Wind12.7 mph NE
Humidity61%
Visibility—
Dew point38°
Thu, 2257° / 47°0
57 °
Allerton, Thursday, 22 October
Overcast. High 57°, low 47°.
Pressure30.71 inHg
Wind7 mph SE
Humidity56%
Visibility—
Dew point39°
Fri, 2366° / 49°0
66 °
Allerton, Friday, 23 October
Clear. High 66°, low 49°.
Pressure30.45 inHg
Wind7.9 mph SW
Humidity59%
Visibility—
Dew point44°
Sat, 2469° / 53°0
69 °
Allerton, Saturday, 24 October
Overcast. High 69°, low 53°.
Pressure30.18 inHg
Wind14 mph SW
Humidity67%
Visibility—
Dew point51°
Sun, 2568° / 61°0
68 °
Allerton, Sunday, 25 October
Overcast. High 68°, low 61°.
Pressure29.85 inHg
Wind13.5 mph SW
Humidity77%
Visibility—
Dew point58°
Mon, 2657° / 54°0.13
57 °
Allerton, Monday, 26 October
Light rain. High 57°, low 54°.
Pressure29.85 inHg
Wind11.7 mph NW
Humidity80%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2757° / 45°0.14
57 °
Allerton, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.14 in
Chance of precipitation23%
Record high78° (1963)
Record low31° (1976)
Wed, 2857° / 44°0.12
57 °
Allerton, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.12 in
Chance of precipitation37%
Record high78° (2023)
Record low31° (1976)
Thu, 2955° / 44°0.15
55 °
Allerton, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.15 in
Chance of precipitation28%
Record high70° (2014)
Record low32° (1965)
Fri, 3055° / 42°0.16
55 °
Allerton, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.16 in
Chance of precipitation32%
Record high70° (1989)
Record low32° (1962)
Sat, 3156° / 43°0.09
56 °
Allerton, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (2024)
Record low29° (2020)
Sun, 0157° / 44°0.11
57 °
Allerton, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.11 in
Chance of precipitation30%
Record high77° (2024)
Record low34° (1964)
Mon, 0256° / 44°0.1
56 °
Allerton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.1 in
Chance of precipitation25%
Record high72° (1982)
Record low29° (1965)
Tue, 0356° / 43°0.21
56 °
Allerton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.21 in
Chance of precipitation35%
Record high73° (2017)
Record low29° (2002)
Wed, 0455° / 43°0.05
55 °
Allerton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.05 in
Chance of precipitation23%
Record high73° (1987)
Record low29° (2002)
Thu, 0555° / 43°0.17
55 °
Allerton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.17 in
Chance of precipitation35%
Record high74° (2022)
Record low31° (1965)
Fri, 0654° / 43°0.13
54 °
Allerton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.13 in
Chance of precipitation38%
Record high75° (2024)
Record low32° (2012)
Sat, 0754° / 42°0.05
54 °
Allerton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.05 in
Chance of precipitation25%
Record high74° (2022)
Record low30° (1962)
Sun, 0852° / 40°0.11
52 °
Allerton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.11 in
Chance of precipitation33%
Record high67° (1996)
Record low29° (2019)
Mon, 0953° / 40°0.11
53 °
Allerton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.11 in
Chance of precipitation32%
Record high69° (2020)
Record low26° (2019)
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 Allerton, 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 Allerton, 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.