Monthly outlook for Highlands, ME: average high 77.9°, average low 61.6°. That is 1.9° above the climate normal for August. Precipitation is expected on 10 days (about 1.8 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (91.2°), the coolest 16 August (54.4°).
77.9°/61.6°
Average high / low
+1.9°
Above normal
10 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
80.2°
75.1°
+2.8°
18 August – 27 August
74.1°
73.5°
+0.3°
28 August – 6 September
at normal
71.8°
—
August records over 66 years
93.6°12 August 2025All-time high
48°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Portland (1 mi).
Sun, 0991° / 69°0
91 °
Highlands, Sunday, 9 August
Clear. High 91°, low 69°.
Pressure29.83 inHg
Wind1.9 mph S
Humidity48%
Visibility6.2 mi
Dew point65°
Mon, 1085° / 67°0.07
85 °
Highlands, Monday, 10 August
Light rain. High 85°, low 67°.
Pressure29.94 inHg
Wind9.1 mph S
Humidity40%
Visibility6.2 mi
Dew point57°
Tue, 1186° / 65°0.07
86 °
Highlands, Tuesday, 11 August
Rain. High 86°, low 65°.
Pressure29.71 inHg
Wind10.2 mph NW
Humidity43%
Visibility6.2 mi
Dew point59°
Wed, 1272° / 62°0.05
72 °
Highlands, Wednesday, 12 August
Light rain. High 72°, low 62°.
Pressure29.80 inHg
Wind2.8 mph S
Humidity91%
Visibility6.2 mi
Dew point61°
Thu, 1377° / 59°0.29
77 °
Highlands, Thursday, 13 August
Rain. High 77°, low 59°.
Pressure29.68 inHg
Wind9.8 mph SW
Humidity62%
Visibility—
Dew point61°
Fri, 1475° / 56°0
75 °
Highlands, Friday, 14 August
Clear. High 75°, low 56°.
Pressure29.83 inHg
Wind8.9 mph W
Humidity46%
Visibility—
Dew point46°
Sat, 1576° / 59°0
76 °
Highlands, Saturday, 15 August
Partly cloudy. High 76°, low 59°.
Pressure30.06 inHg
Wind9.6 mph NW
Humidity38%
Visibility—
Dew point43°
Sun, 1678° / 54°0
78 °
Highlands, Sunday, 16 August
Clear. High 78°, low 54°.
Pressure30.24 inHg
Wind9.3 mph S
Humidity32%
Visibility—
Dew point41°
Mon, 1780° / 58°0
80 °
Highlands, Monday, 17 August
Overcast. High 80°, low 58°.
Pressure30.15 inHg
Wind9.6 mph SW
Humidity40%
Visibility—
Dew point48°
Tue, 1874° / 63°0.33
74 °
Highlands, Tuesday, 18 August
Rain. High 74°, low 63°.
Pressure30.00 inHg
Wind8.8 mph SW
Humidity98%
Visibility—
Dew point64°
Wed, 1976° / 63°0.04
76 °
Highlands, Wednesday, 19 August
Light rain. High 76°, low 63°.
Pressure29.85 inHg
Wind6.2 mph N
Humidity58%
Visibility—
Dew point58°
Thu, 2076° / 59°0
76 °
Highlands, Thursday, 20 August
Clear. High 76°, low 59°.
Pressure30.00 inHg
Wind8 mph SE
Humidity39%
Visibility—
Dew point46°
Fri, 2176° / 62°0.07
76 °
Highlands, Friday, 21 August
Light rain. High 76°, low 62°.
Pressure30.00 inHg
Wind11.7 mph S
Humidity59%
Visibility—
Dew point58°
Sat, 2275° / 64°0.6
75 °
Highlands, Saturday, 22 August
Rain. High 75°, low 64°.
Pressure29.77 inHg
Wind12.2 mph S
Humidity99%
Visibility—
Dew point66°
Sun, 2368° / 55°0.04
68 °
Highlands, Sunday, 23 August
Light rain. High 68°, low 55°.
Pressure29.68 inHg
Wind13.1 mph NW
Humidity56%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2473° / 62°0.07
73 °
Highlands, Monday, 24 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high82° (1980)
Record low53° (1971)
Tue, 2573° / 62°0.11
73 °
Highlands, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.11 in
Chance of precipitation32%
Record high86° (2020)
Record low53° (1989)
Wed, 2674° / 62°0.04
74 °
Highlands, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high74°
Average low62°
Average precipitation0.04 in
Chance of precipitation17%
Record high86° (2021)
Record low54° (2019)
Thu, 2774° / 62°0.05
74 °
Highlands, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high74°
Average low62°
Average precipitation0.05 in
Chance of precipitation27%
Record high84° (1983)
Record low52° (2019)
Fri, 2873° / 62°0.14
73 °
Highlands, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.14 in
Chance of precipitation28%
Record high90° (2018)
Record low54° (2025)
Sat, 2972° / 62°0.15
72 °
Highlands, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high72°
Average low62°
Average precipitation0.15 in
Chance of precipitation28%
Record high86° (2010)
Record low49° (1982)
Sun, 3073° / 61°0.14
73 °
Highlands, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.14 in
Chance of precipitation27%
Record high86° (2010)
Record low48° (1965)
Mon, 3173° / 61°0.09
73 °
Highlands, Monday, 31 August
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.09 in
Chance of precipitation22%
Record high89° (2010)
Record low48° (1965)
Tue, 0172° / 60°0.03
72 °
Highlands, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high72°
Average low60°
Average precipitation0.03 in
Chance of precipitation18%
Record high85° (2010)
Record low50° (2017)
Wed, 0271° / 60°0.11
71 °
Highlands, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.11 in
Chance of precipitation28%
Record high87° (2010)
Record low49° (2017)
Thu, 0371° / 60°0.11
71 °
Highlands, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.11 in
Chance of precipitation30%
Record high87° (2018)
Record low52° (2024)
Fri, 0471° / 60°0.14
71 °
Highlands, Friday, 4 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.14 in
Chance of precipitation33%
Record high83° (2023)
Record low53° (1965)
Sat, 0571° / 60°0.08
71 °
Highlands, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.08 in
Chance of precipitation22%
Record high89° (2023)
Record low50° (1963)
Sun, 0670° / 60°0.12
70 °
Highlands, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high70°
Average low60°
Average precipitation0.12 in
Chance of precipitation32%
Record high89° (2018)
Record low50° (2000)
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 Highlands, ME 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 Highlands, ME 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.