Monthly outlook for Bar Harbor, MD: average high 83.5°, average low 70.9°. That is 0.2° above the climate normal for August. Precipitation is expected on 8 days (about 1.6 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 10 August (94.3°), the coolest 22 August (65°).
83.5°/70.9°
Average high / low
+0.2°
Above normal
8 / 6
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
85.6°
83.9°
+1°
18 August – 27 August
80.1°
82.3°
-1.3°
28 August – 6 September
at normal
81.7°
—
August records over 66 years
98.6°15 August 1988All-time high
50.7°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Baltimore (12 mi).
Sun, 0990° / 75°0
90 °
Bar Harbor, Sunday, 9 August
Mostly clear. High 90°, low 75°.
Pressure30.03 inHg
Wind6.2 mph NW
Humidity46%
Visibility6.2 mi
Dew point67°
Mon, 1094° / 75°0.05
94 °
Bar Harbor, Monday, 10 August
Light rain. High 94°, low 75°.
Pressure30.00 inHg
Wind3.7 mph N
Humidity43%
Visibility6.2 mi
Dew point65°
Tue, 1190° / 73°0.28
90 °
Bar Harbor, Tuesday, 11 August
Rain. High 90°, low 73°.
Pressure29.91 inHg
Wind1.3 mph NW
Humidity52%
Visibility6.2 mi
Dew point68°
Wed, 1290° / 74°0.11
90 °
Bar Harbor, Wednesday, 12 August
Light rain. High 90°, low 74°.
Pressure29.77 inHg
Wind10 mph W
Humidity62%
Visibility6.2 mi
Dew point67°
Thu, 1387° / 75°0.02
87 °
Bar Harbor, Thursday, 13 August
Light rain. High 87°, low 75°.
Pressure29.83 inHg
Wind15.1 mph NW
Humidity37%
Visibility—
Dew point56°
Fri, 1478° / 66°0
78 °
Bar Harbor, Friday, 14 August
Overcast. High 78°, low 66°.
Pressure30.09 inHg
Wind11.6 mph N
Humidity42%
Visibility—
Dew point48°
Sat, 1582° / 66°0
82 °
Bar Harbor, Saturday, 15 August
Clear. High 82°, low 66°.
Pressure30.15 inHg
Wind11.1 mph N
Humidity33%
Visibility—
Dew point48°
Sun, 1679° / 68°0
79 °
Bar Harbor, Sunday, 16 August
Overcast. High 79°, low 68°.
Pressure30.18 inHg
Wind9.1 mph SE
Humidity38%
Visibility—
Dew point49°
Mon, 1778° / 72°0.04
78 °
Bar Harbor, Monday, 17 August
Light rain. High 78°, low 72°.
Pressure30.09 inHg
Wind12.1 mph S
Humidity63%
Visibility—
Dew point62°
Tue, 1873° / 70°0.57
73 °
Bar Harbor, Tuesday, 18 August
Rain. High 73°, low 70°.
Pressure30.03 inHg
Wind11.1 mph S
Humidity84%
Visibility—
Dew point68°
Wed, 1980° / 71°0.33
80 °
Bar Harbor, Wednesday, 19 August
Light rain. High 80°, low 71°.
Pressure29.91 inHg
Wind12.4 mph S
Humidity85%
Visibility—
Dew point69°
Thu, 2081° / 71°0.12
81 °
Bar Harbor, Thursday, 20 August
Light rain. High 81°, low 71°.
Pressure29.71 inHg
Wind16.1 mph NW
Humidity41%
Visibility—
Dew point54°
Fri, 2182° / 67°0
82 °
Bar Harbor, Friday, 21 August
Clear. High 82°, low 67°.
Pressure29.88 inHg
Wind12.2 mph NW
Humidity32%
Visibility—
Dew point46°
Sat, 2279° / 65°0
79 °
Bar Harbor, Saturday, 22 August
Partly cloudy. High 79°, low 65°.
Pressure30.06 inHg
Wind10.6 mph SE
Humidity33%
Visibility—
Dew point46°
Sun, 2384° / 73°0.03
84 °
Bar Harbor, Sunday, 23 August
Light rain. High 84°, low 73°.
Pressure29.97 inHg
Wind14.5 mph SW
Humidity71%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 66°0.07
82 °
Bar Harbor, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation18%
Record high93° (1995)
Record low56° (1971)
Tue, 2583° / 67°0.06
83 °
Bar Harbor, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.06 in
Chance of precipitation22%
Record high95° (1968)
Record low57° (1987)
Wed, 2683° / 67°0.07
83 °
Bar Harbor, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.07 in
Chance of precipitation18%
Record high93° (1975)
Record low57° (1963)
Thu, 2783° / 68°0.17
83 °
Bar Harbor, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.17 in
Chance of precipitation38%
Record high93° (1987)
Record low59° (2025)
Fri, 2883° / 69°0.16
83 °
Bar Harbor, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.16 in
Chance of precipitation48%
Record high96° (1973)
Record low58° (1986)
Sat, 2983° / 68°0.12
83 °
Bar Harbor, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.12 in
Chance of precipitation32%
Record high93° (1973)
Record low51° (1986)
Sun, 3083° / 67°0.07
83 °
Bar Harbor, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (2022)
Record low51° (1986)
Mon, 3182° / 67°0.07
82 °
Bar Harbor, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.07 in
Chance of precipitation27%
Record high93° (1973)
Record low54° (1976)
Tue, 0181° / 66°0.16
81 °
Bar Harbor, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.16 in
Chance of precipitation28%
Record high94° (2010)
Record low56° (1967)
Wed, 0281° / 65°0.12
81 °
Bar Harbor, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.12 in
Chance of precipitation40%
Record high94° (1980)
Record low55° (2009)
Thu, 0382° / 66°0.11
82 °
Bar Harbor, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation25%
Record high97° (2023)
Record low52° (1967)
Fri, 0482° / 66°0.09
82 °
Bar Harbor, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation30%
Record high100° (2023)
Record low55° (2024)
Sat, 0580° / 66°0.13
80 °
Bar Harbor, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.13 in
Chance of precipitation28%
Record high99° (2023)
Record low54° (1997)
Sun, 0680° / 65°0.24
80 °
Bar Harbor, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.24 in
Chance of precipitation35%
Record high99° (2023)
Record low54° (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 Bar Harbor, MD 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 Bar Harbor, MD 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.