Monthly outlook for South Middleton, MA: average high 82.4°, average low 63°. That is 3.2° above the climate normal for August. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 9 August (93.5°), the coolest 16 August (57.5°).
82.4°/63°
Average high / low
+3.2°
Above normal
5 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.3°
77.4°
+3.3°
19 August – 28 August
80.9°
75.7°
+2.9°
29 August – 7 September
at normal
74°
—
August records over 66 years
95.4°2 August 2006All-time high
48.4°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Lynn (7 mi).
Mon, 1091° / 69°0
91 °
South Middleton, Monday, 10 August
Partly cloudy. High 91°, low 69°.
Pressure29.94 inHg
Wind4.8 mph S
Humidity28%
Visibility6.2 mi
Dew point52°
Tue, 1191° / 68°0
91 °
South Middleton, Tuesday, 11 August
Overcast. High 91°, low 68°.
Pressure29.77 inHg
Wind9.4 mph W
Humidity35%
Visibility6.2 mi
Dew point57°
Wed, 1288° / 64°0
88 °
South Middleton, Wednesday, 12 August
Partly cloudy. High 88°, low 64°.
Pressure29.80 inHg
Wind2.5 mph SW
Humidity25%
Visibility6.2 mi
Dew point48°
Thu, 1386° / 65°0.11
86 °
South Middleton, Thursday, 13 August
Light rain. High 86°, low 65°.
Pressure29.62 inHg
Wind14.3 mph W
Humidity46%
Visibility—
Dew point58°
Fri, 1479° / 59°0
79 °
South Middleton, Friday, 14 August
Clear. High 79°, low 59°.
Pressure29.88 inHg
Wind13 mph W
Humidity36%
Visibility—
Dew point43°
Sat, 1580° / 58°0
80 °
South Middleton, Saturday, 15 August
Clear. High 80°, low 58°.
Pressure30.03 inHg
Wind12.4 mph N
Humidity30%
Visibility—
Dew point39°
Sun, 1680° / 57°0
80 °
South Middleton, Sunday, 16 August
Overcast. High 80°, low 57°.
Pressure30.12 inHg
Wind7.4 mph SE
Humidity25%
Visibility—
Dew point38°
Mon, 1769° / 61°0.21
69 °
South Middleton, Monday, 17 August
Rain. High 69°, low 61°.
Pressure30.03 inHg
Wind5.4 mph NE
Humidity55%
Visibility—
Dew point52°
Tue, 1874° / 60°0.47
74 °
South Middleton, Tuesday, 18 August
Rain. High 74°, low 60°.
Pressure29.94 inHg
Wind7.9 mph N
Humidity70%
Visibility—
Dew point58°
Wed, 1978° / 62°0
78 °
South Middleton, Wednesday, 19 August
Overcast. High 78°, low 62°.
Pressure29.94 inHg
Wind9.9 mph S
Humidity56%
Visibility—
Dew point59°
Thu, 2079° / 65°0.2
79 °
South Middleton, Thursday, 20 August
Light rain. High 79°, low 65°.
Pressure29.68 inHg
Wind6 mph SW
Humidity71%
Visibility—
Dew point65°
Fri, 2179° / 62°0
79 °
South Middleton, Friday, 21 August
Overcast. High 79°, low 62°.
Pressure29.85 inHg
Wind6.3 mph NW
Humidity79%
Visibility—
Dew point62°
Sat, 2287° / 62°0
87 °
South Middleton, Saturday, 22 August
Clear. High 87°, low 62°.
Pressure29.94 inHg
Wind8.5 mph S
Humidity40%
Visibility—
Dew point52°
Sun, 2386° / 68°0.54
86 °
South Middleton, Sunday, 23 August
Rain. High 86°, low 68°.
Pressure29.77 inHg
Wind13.6 mph SW
Humidity96%
Visibility—
Dew point73°
Mon, 2477° / 59°0
77 °
South Middleton, Monday, 24 August
Clear. High 77°, low 59°.
Pressure30.12 inHg
Wind8.9 mph NW
Humidity36%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2575° / 62°0.12
75 °
South Middleton, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.12 in
Chance of precipitation28%
Record high91° (1969)
Record low54° (1971)
Wed, 2677° / 62°0.06
77 °
South Middleton, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.06 in
Chance of precipitation18%
Record high88° (1993)
Record low53° (1981)
Thu, 2776° / 63°0.09
76 °
South Middleton, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low63°
Average precipitation0.09 in
Chance of precipitation32%
Record high90° (1993)
Record low54° (1989)
Fri, 2876° / 64°0.11
76 °
South Middleton, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.11 in
Chance of precipitation30%
Record high92° (2018)
Record low55° (1986)
Sat, 2975° / 63°0.17
75 °
South Middleton, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.17 in
Chance of precipitation30%
Record high93° (2018)
Record low49° (1982)
Sun, 3076° / 62°0.14
76 °
South Middleton, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.14 in
Chance of precipitation22%
Record high89° (1973)
Record low48° (1965)
Mon, 3175° / 62°0.07
75 °
South Middleton, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.07 in
Chance of precipitation23%
Record high89° (2010)
Record low49° (1965)
Tue, 0174° / 61°0.05
74 °
South Middleton, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high74°
Average low61°
Average precipitation0.05 in
Chance of precipitation23%
Record high88° (2010)
Record low52° (1975)
Wed, 0273° / 61°0.16
73 °
South Middleton, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.16 in
Chance of precipitation25%
Record high89° (2010)
Record low50° (2017)
Thu, 0373° / 61°0.13
73 °
South Middleton, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.13 in
Chance of precipitation33%
Record high92° (2018)
Record low51° (1967)
Fri, 0474° / 61°0.12
74 °
South Middleton, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low61°
Average precipitation0.12 in
Chance of precipitation22%
Record high86° (1973)
Record low52° (1987)
Sat, 0574° / 61°0.08
74 °
South Middleton, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low61°
Average precipitation0.08 in
Chance of precipitation18%
Record high86° (1971)
Record low51° (1994)
Sun, 0673° / 60°0.15
73 °
South Middleton, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.15 in
Chance of precipitation33%
Record high94° (2018)
Record low50° (1965)
Mon, 0773° / 60°0.12
73 °
South Middleton, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.12 in
Chance of precipitation20%
Record high88° (1983)
Record low49° (1984)
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 South Middleton, 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 South Middleton, 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.