Monthly outlook for Porter Landing, ME: average high 75.1°, average low 61.1°. That is 0.3° above the climate normal for August. Precipitation is expected on 7 days (about 1.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (89°), the coolest 23 August (55.1°).
75.1°/61.1°
Average high / low
+0.3°
Above normal
7 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
76.8°
75.1°
+0.9°
18 August – 27 August
72.3°
73.5°
-0.7°
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 (14 mi).
Sun, 0989° / 70°0.05
89 °
Porter Landing, Sunday, 9 August
Rain. High 89°, low 70°.
Pressure29.85 inHg
Wind3.9 mph S
Humidity58%
Visibility6.2 mi
Dew point65°
Mon, 1083° / 65°0.04
83 °
Porter Landing, Monday, 10 August
Light rain. High 83°, low 65°.
Pressure29.94 inHg
Wind9.6 mph S
Humidity51%
Visibility6.2 mi
Dew point58°
Tue, 1180° / 62°0.11
80 °
Porter Landing, Tuesday, 11 August
Rain. High 80°, low 62°.
Pressure29.71 inHg
Wind1.5 mph SW
Humidity60%
Visibility6.2 mi
Dew point63°
Wed, 1269° / 61°0.22
69 °
Porter Landing, Wednesday, 12 August
Rain. High 69°, low 61°.
Pressure29.77 inHg
Wind4.3 mph SW
Humidity87%
Visibility6.2 mi
Dew point59°
Thu, 1372° / 60°0.21
72 °
Porter Landing, Thursday, 13 August
Light rain. High 72°, low 60°.
Pressure29.65 inHg
Wind7.9 mph SW
Humidity75%
Visibility—
Dew point62°
Fri, 1470° / 57°0
70 °
Porter Landing, Friday, 14 August
Clear. High 70°, low 57°.
Pressure29.88 inHg
Wind11.5 mph W
Humidity46%
Visibility—
Dew point46°
Sat, 1575° / 57°0
75 °
Porter Landing, Saturday, 15 August
Clear. High 75°, low 57°.
Pressure29.94 inHg
Wind15.1 mph NW
Humidity51%
Visibility—
Dew point50°
Sun, 1673° / 57°0
73 °
Porter Landing, Sunday, 16 August
Clear. High 73°, low 57°.
Pressure30.12 inHg
Wind6.8 mph S
Humidity51%
Visibility—
Dew point51°
Mon, 1773° / 59°0
73 °
Porter Landing, Monday, 17 August
Partly cloudy. High 73°, low 59°.
Pressure30.15 inHg
Wind14.1 mph S
Humidity60%
Visibility—
Dew point55°
Tue, 1874° / 63°0.02
74 °
Porter Landing, Tuesday, 18 August
Light rain. High 74°, low 63°.
Pressure30.12 inHg
Wind13.6 mph S
Humidity76%
Visibility—
Dew point60°
Wed, 1974° / 62°0
74 °
Porter Landing, Wednesday, 19 August
Overcast. High 74°, low 62°.
Pressure29.97 inHg
Wind13.2 mph S
Humidity61%
Visibility—
Dew point57°
Thu, 2068° / 63°1.05
68 °
Porter Landing, Thursday, 20 August
Rain. High 68°, low 63°.
Pressure29.65 inHg
Wind17.9 mph S
Humidity97%
Visibility—
Dew point66°
Fri, 2172° / 59°0
72 °
Porter Landing, Friday, 21 August
Partly cloudy. High 72°, low 59°.
Pressure29.53 inHg
Wind15.7 mph NW
Humidity60%
Visibility—
Dew point56°
Sat, 2273° / 57°0
73 °
Porter Landing, Saturday, 22 August
Clear. High 73°, low 57°.
Pressure29.91 inHg
Wind11.5 mph NW
Humidity41%
Visibility—
Dew point42°
Sun, 2374° / 55°0.01
74 °
Porter Landing, Sunday, 23 August
Light rain. High 74°, low 55°.
Pressure30.06 inHg
Wind13.2 mph S
Humidity39%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2473° / 62°0.07
73 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 °
Porter Landing, 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 Porter Landing, 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 Porter Landing, 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.