Monthly outlook for Winchester Highlands, MA: average high 85.8°, average low 64.5°. That is 3.5° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 21 August (93.9°), the coolest 15 August (55.7°).
85.8°/64.5°
Average high / low
+3.5°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.9°
80.2°
+2.6°
19 August – 28 August
87.3°
78.4°
+5°
29 August – 7 September
at normal
76.5°
—
August records over 66 years
100°2 August 1975All-time high
46.9°31 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Medford (3 mi).
Mon, 1091° / 70°0
91 °
Winchester Highlands, Monday, 10 August
Light rain. High 91°, low 70°.
Pressure29.94 inHg
Wind4.3 mph S
Humidity31%
Visibility6.2 mi
Dew point56°
Tue, 1191° / 68°0
91 °
Winchester Highlands, Tuesday, 11 August
Light rain. High 91°, low 68°.
Pressure29.74 inHg
Wind8.4 mph NW
Humidity37%
Visibility6.2 mi
Dew point58°
Wed, 1286° / 66°0
86 °
Winchester Highlands, Wednesday, 12 August
Overcast. High 86°, low 66°.
Pressure29.77 inHg
Wind1.3 mph NE
Humidity30%
Visibility6.2 mi
Dew point52°
Thu, 1382° / 64°0.02
82 °
Winchester Highlands, Thursday, 13 August
Light rain. High 82°, low 64°.
Pressure29.65 inHg
Wind12.7 mph W
Humidity59%
Visibility—
Dew point58°
Fri, 1476° / 57°0
76 °
Winchester Highlands, Friday, 14 August
Clear. High 76°, low 57°.
Pressure29.85 inHg
Wind15.1 mph NW
Humidity36%
Visibility—
Dew point42°
Sat, 1579° / 56°0
79 °
Winchester Highlands, Saturday, 15 August
Clear. High 79°, low 56°.
Pressure29.91 inHg
Wind14.5 mph NW
Humidity36%
Visibility—
Dew point42°
Sun, 1682° / 59°0
82 °
Winchester Highlands, Sunday, 16 August
Overcast. High 82°, low 59°.
Pressure30.06 inHg
Wind6.9 mph NW
Humidity30%
Visibility—
Dew point42°
Mon, 1785° / 62°0.02
85 °
Winchester Highlands, Monday, 17 August
Light rain. High 85°, low 62°.
Pressure30.00 inHg
Wind9.3 mph SW
Humidity32%
Visibility—
Dew point46°
Tue, 1884° / 60°0
84 °
Winchester Highlands, Tuesday, 18 August
Clear. High 84°, low 60°.
Pressure30.00 inHg
Wind9.9 mph SE
Humidity40%
Visibility—
Dew point50°
Wed, 1980° / 60°0
80 °
Winchester Highlands, Wednesday, 19 August
Overcast. High 80°, low 60°.
Pressure30.15 inHg
Wind9.2 mph SE
Humidity43%
Visibility—
Dew point53°
Thu, 2090° / 64°0
90 °
Winchester Highlands, Thursday, 20 August
Overcast. High 90°, low 64°.
Pressure30.06 inHg
Wind9.7 mph S
Humidity35%
Visibility—
Dew point52°
Fri, 2194° / 70°0.04
94 °
Winchester Highlands, Friday, 21 August
Light rain. High 94°, low 70°.
Pressure29.88 inHg
Wind12 mph SW
Humidity46%
Visibility—
Dew point61°
Sat, 2293° / 72°0
93 °
Winchester Highlands, Saturday, 22 August
Overcast. High 93°, low 72°.
Pressure29.85 inHg
Wind10.1 mph E
Humidity47%
Visibility—
Dew point64°
Sun, 2390° / 68°0
90 °
Winchester Highlands, Sunday, 23 August
Clear. High 90°, low 68°.
Pressure29.94 inHg
Wind7.3 mph E
Humidity36%
Visibility—
Dew point54°
Mon, 2476° / 64°0.01
76 °
Winchester Highlands, Monday, 24 August
Light rain. High 76°, low 64°.
Pressure30.06 inHg
Wind10.7 mph NE
Humidity62%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.11
78 °
Winchester Highlands, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation28%
Record high95° (1969)
Record low53° (1971)
Wed, 2680° / 62°0.06
80 °
Winchester Highlands, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.06 in
Chance of precipitation18%
Record high93° (1993)
Record low50° (1981)
Thu, 2779° / 64°0.09
79 °
Winchester Highlands, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.09 in
Chance of precipitation32%
Record high96° (1993)
Record low52° (1989)
Fri, 2878° / 64°0.11
78 °
Winchester Highlands, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (1993)
Record low53° (1986)
Sat, 2977° / 63°0.17
77 °
Winchester Highlands, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low63°
Average precipitation0.17 in
Chance of precipitation30%
Record high95° (2018)
Record low48° (1986)
Sun, 3078° / 62°0.15
78 °
Winchester Highlands, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.15 in
Chance of precipitation23%
Record high93° (1973)
Record low48° (1986)
Mon, 3178° / 62°0.07
78 °
Winchester Highlands, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (2010)
Record low47° (1965)
Tue, 0176° / 61°0.05
76 °
Winchester Highlands, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.05 in
Chance of precipitation23%
Record high93° (2010)
Record low50° (1975)
Wed, 0276° / 60°0.16
76 °
Winchester Highlands, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.16 in
Chance of precipitation25%
Record high94° (2010)
Record low50° (2017)
Thu, 0376° / 61°0.13
76 °
Winchester Highlands, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.13 in
Chance of precipitation33%
Record high94° (2018)
Record low50° (1967)
Fri, 0476° / 61°0.12
76 °
Winchester Highlands, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.12 in
Chance of precipitation22%
Record high90° (1973)
Record low51° (1987)
Sat, 0576° / 61°0.08
76 °
Winchester Highlands, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.08 in
Chance of precipitation17%
Record high90° (1971)
Record low51° (1994)
Sun, 0675° / 60°0.16
75 °
Winchester Highlands, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.16 in
Chance of precipitation33%
Record high95° (2018)
Record low50° (1965)
Mon, 0776° / 60°0.11
76 °
Winchester Highlands, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation20%
Record high93° (2007)
Record low48° (1962)
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 Winchester Highlands, 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 Winchester Highlands, 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.