Monthly outlook for Bainbridge Island, WA: average high 76.8°, average low 54.1°. That is 1.4° above the climate normal for August. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 14 August (85.5°), the coolest 11 August (51°).
76.8°/54.1°
Average high / low
+1.4°
Above normal
3 / 3
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79.5°
75.2°
+2.4°
19 August – 28 August
72.2°
72.9°
-0.4°
29 August – 7 September
at normal
70.8°
—
August records over 66 years
97°16 August 2020All-time high
45.1°18 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Meridian (10 mi).
Mon, 1077° / 53°0
77 °
Bainbridge Island, Monday, 10 August
Partly cloudy. High 77°, low 53°.
Pressure30.09 inHg
Wind4.2 mph S
Humidity48%
Visibility6.2 mi
Dew point52°
Tue, 1183° / 51°0
83 °
Bainbridge Island, Tuesday, 11 August
Clear. High 83°, low 51°.
Pressure30.09 inHg
Wind1.1 mph E
Humidity39%
Visibility6.2 mi
Dew point52°
Wed, 1282° / 52°0
82 °
Bainbridge Island, Wednesday, 12 August
Clear. High 82°, low 52°.
Pressure29.97 inHg
Wind0.6 mph S
Humidity40%
Visibility6.2 mi
Dew point53°
Thu, 1383° / 52°0
83 °
Bainbridge Island, Thursday, 13 August
Clear. High 83°, low 52°.
Pressure29.85 inHg
Wind8.4 mph NE
Humidity36%
Visibility—
Dew point50°
Fri, 1485° / 54°0
85 °
Bainbridge Island, Friday, 14 August
Overcast. High 85°, low 54°.
Pressure29.91 inHg
Wind5.2 mph N
Humidity35%
Visibility—
Dew point51°
Sat, 1584° / 53°0
84 °
Bainbridge Island, Saturday, 15 August
Overcast. High 84°, low 53°.
Pressure29.94 inHg
Wind6.7 mph S
Humidity32%
Visibility—
Dew point47°
Sun, 1683° / 52°0
83 °
Bainbridge Island, Sunday, 16 August
Overcast. High 83°, low 52°.
Pressure29.94 inHg
Wind7.4 mph S
Humidity27%
Visibility—
Dew point43°
Mon, 1760° / 58°0.09
60 °
Bainbridge Island, Monday, 17 August
Light rain. High 60°, low 58°.
Pressure30.00 inHg
Wind8.9 mph S
Humidity91%
Visibility—
Dew point57°
Tue, 1880° / 55°0
80 °
Bainbridge Island, Tuesday, 18 August
Overcast. High 80°, low 55°.
Pressure29.97 inHg
Wind8.9 mph N
Humidity36%
Visibility—
Dew point48°
Wed, 1978° / 54°0
78 °
Bainbridge Island, Wednesday, 19 August
Overcast. High 78°, low 54°.
Pressure29.97 inHg
Wind5 mph SW
Humidity47%
Visibility—
Dew point51°
Thu, 2080° / 58°0.03
80 °
Bainbridge Island, Thursday, 20 August
Light rain. High 80°, low 58°.
Pressure29.91 inHg
Wind4.7 mph N
Humidity47%
Visibility—
Dew point56°
Fri, 2175° / 54°0
75 °
Bainbridge Island, Friday, 21 August
Overcast. High 75°, low 54°.
Pressure29.91 inHg
Wind6.6 mph SW
Humidity46%
Visibility—
Dew point51°
Sat, 2268° / 57°0.3
68 °
Bainbridge Island, Saturday, 22 August
Light rain. High 68°, low 57°.
Pressure30.03 inHg
Wind3.5 mph E
Humidity79%
Visibility—
Dew point59°
Sun, 2374° / 53°0.01
74 °
Bainbridge Island, Sunday, 23 August
Light rain. High 74°, low 53°.
Pressure30.06 inHg
Wind6 mph S
Humidity47%
Visibility—
Dew point50°
Mon, 2459° / 55°0.43
59 °
Bainbridge Island, Monday, 24 August
Rain. High 59°, low 55°.
Pressure29.88 inHg
Wind6.5 mph S
Humidity97%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2573° / 55°0.07
73 °
Bainbridge Island, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.07 in
Chance of precipitation18%
Record high86° (2025)
Record low47° (1995)
Wed, 2673° / 55°0.05
73 °
Bainbridge Island, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.05 in
Chance of precipitation18%
Record high87° (1986)
Record low48° (1993)
Thu, 2773° / 56°0.11
73 °
Bainbridge Island, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.11 in
Chance of precipitation27%
Record high89° (1986)
Record low49° (1962)
Fri, 2873° / 55°0.05
73 °
Bainbridge Island, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.05 in
Chance of precipitation23%
Record high89° (1967)
Record low46° (2000)
Sat, 2972° / 55°0.11
72 °
Bainbridge Island, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.11 in
Chance of precipitation32%
Record high86° (2017)
Record low45° (1980)
Sun, 3071° / 55°0.07
71 °
Bainbridge Island, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high71°
Average low55°
Average precipitation0.07 in
Chance of precipitation40%
Record high85° (1967)
Record low45° (1965)
Mon, 3170° / 55°0.07
70 °
Bainbridge Island, Monday, 31 August
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.07 in
Chance of precipitation32%
Record high89° (1987)
Record low45° (1964)
Tue, 0171° / 54°0.11
71 °
Bainbridge Island, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.11 in
Chance of precipitation30%
Record high86° (1987)
Record low44° (1973)
Wed, 0271° / 54°0.09
71 °
Bainbridge Island, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.09 in
Chance of precipitation30%
Record high90° (1988)
Record low44° (1960)
Thu, 0371° / 54°0.08
71 °
Bainbridge Island, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.08 in
Chance of precipitation23%
Record high90° (1988)
Record low45° (1975)
Fri, 0471° / 54°0.07
71 °
Bainbridge Island, Friday, 4 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.07 in
Chance of precipitation23%
Record high84° (1988)
Record low45° (1965)
Sat, 0570° / 54°0.09
70 °
Bainbridge Island, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.09 in
Chance of precipitation30%
Record high90° (2017)
Record low46° (2005)
Sun, 0670° / 54°0.12
70 °
Bainbridge Island, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.12 in
Chance of precipitation30%
Record high86° (2017)
Record low43° (1960)
Mon, 0770° / 54°0.07
70 °
Bainbridge Island, Monday, 7 September
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.07 in
Chance of precipitation30%
Record high86° (1981)
Record low43° (1960)
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 Bainbridge Island, WA 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 Bainbridge Island, WA 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.