Monthly outlook for South Montesano, WA: average high 81.6°, average low 54.1°. That is 4.4° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 24 August (100.4°), the coolest 11 August (50.4°).
81.6°/54.1°
Average high / low
+4.4°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
77.8°
74.5°
+1.8°
19 August – 28 August
88°
72.7°
+8.5°
29 August – 7 September
at normal
71.3°
—
August records over 66 years
102°9 August 1981All-time high
44.1°13 August 2020All-time low
Climate normals and records are computed from the nearest reference point — Brady (5 mi).
Mon, 1076° / 56°0
76 °
South Montesano, Monday, 10 August
Overcast. High 76°, low 56°.
Pressure30.09 inHg
Wind7.4 mph W
Humidity48%
Visibility6.2 mi
Dew point52°
Tue, 1178° / 50°0
78 °
South Montesano, Tuesday, 11 August
Clear. High 78°, low 50°.
Pressure30.12 inHg
Wind6.4 mph W
Humidity42%
Visibility6.2 mi
Dew point51°
Wed, 1274° / 52°0
74 °
South Montesano, Wednesday, 12 August
Clear. High 74°, low 52°.
Pressure30.03 inHg
Wind5 mph SW
Humidity52%
Visibility6.2 mi
Dew point54°
Thu, 1383° / 53°0
83 °
South Montesano, Thursday, 13 August
Clear. High 83°, low 53°.
Pressure29.85 inHg
Wind8.4 mph W
Humidity40%
Visibility—
Dew point53°
Fri, 1477° / 54°0
77 °
South Montesano, Friday, 14 August
Overcast. High 77°, low 54°.
Pressure29.91 inHg
Wind8.8 mph W
Humidity51%
Visibility—
Dew point55°
Sat, 1576° / 55°0
76 °
South Montesano, Saturday, 15 August
Overcast. High 76°, low 55°.
Pressure30.00 inHg
Wind7.9 mph W
Humidity47%
Visibility—
Dew point53°
Sun, 1681° / 53°0
81 °
South Montesano, Sunday, 16 August
Partly cloudy. High 81°, low 53°.
Pressure30.06 inHg
Wind10 mph W
Humidity38%
Visibility—
Dew point50°
Mon, 1776° / 54°0
76 °
South Montesano, Monday, 17 August
Partly cloudy. High 76°, low 54°.
Pressure30.18 inHg
Wind9.8 mph W
Humidity42%
Visibility—
Dew point49°
Tue, 1883° / 52°0
83 °
South Montesano, Tuesday, 18 August
Clear. High 83°, low 52°.
Pressure30.12 inHg
Wind8.5 mph W
Humidity35%
Visibility—
Dew point49°
Wed, 1985° / 55°0
85 °
South Montesano, Wednesday, 19 August
Clear. High 85°, low 55°.
Pressure30.06 inHg
Wind8.4 mph W
Humidity39%
Visibility—
Dew point55°
Thu, 2083° / 54°0
83 °
South Montesano, Thursday, 20 August
Clear. High 83°, low 54°.
Pressure30.09 inHg
Wind10 mph W
Humidity40%
Visibility—
Dew point53°
Fri, 2184° / 52°0
84 °
South Montesano, Friday, 21 August
Clear. High 84°, low 52°.
Pressure30.00 inHg
Wind8.5 mph W
Humidity35%
Visibility—
Dew point50°
Sat, 2285° / 54°0
85 °
South Montesano, Saturday, 22 August
Clear. High 85°, low 54°.
Pressure30.03 inHg
Wind8.6 mph W
Humidity39%
Visibility—
Dew point54°
Sun, 2390° / 56°0
90 °
South Montesano, Sunday, 23 August
Clear. High 90°, low 56°.
Pressure30.09 inHg
Wind8.4 mph W
Humidity34%
Visibility—
Dew point54°
Mon, 24100° / 59°0
100 °
South Montesano, Monday, 24 August
Clear. High 100°, low 59°.
Pressure29.88 inHg
Wind6.7 mph NE
Humidity20%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2573° / 53°0.06
73 °
South Montesano, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.06 in
Chance of precipitation17%
Record high91° (1996)
Record low47° (1975)
Wed, 2673° / 53°0.04
73 °
South Montesano, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.04 in
Chance of precipitation17%
Record high92° (1986)
Record low47° (1971)
Thu, 2773° / 54°0.08
73 °
South Montesano, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high73°
Average low54°
Average precipitation0.08 in
Chance of precipitation22%
Record high93° (2017)
Record low48° (1965)
Fri, 2873° / 54°0.06
73 °
South Montesano, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low54°
Average precipitation0.06 in
Chance of precipitation23%
Record high98° (2017)
Record low46° (2024)
Sat, 2972° / 54°0.08
72 °
South Montesano, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.08 in
Chance of precipitation23%
Record high88° (1996)
Record low45° (1985)
Sun, 3071° / 54°0.07
71 °
South Montesano, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.07 in
Chance of precipitation23%
Record high94° (2022)
Record low46° (1977)
Mon, 3171° / 54°0.07
71 °
South Montesano, Monday, 31 August
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.07 in
Chance of precipitation23%
Record high96° (1987)
Record low45° (1964)
Tue, 0171° / 53°0.09
71 °
South Montesano, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.09 in
Chance of precipitation27%
Record high90° (1988)
Record low44° (2021)
Wed, 0273° / 53°0.07
73 °
South Montesano, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high73°
Average low53°
Average precipitation0.07 in
Chance of precipitation23%
Record high98° (1988)
Record low44° (2021)
Thu, 0372° / 53°0.06
72 °
South Montesano, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high72°
Average low53°
Average precipitation0.06 in
Chance of precipitation22%
Record high95° (2017)
Record low46° (1964)
Fri, 0472° / 53°0.04
72 °
South Montesano, Friday, 4 September
Climate normal for this date — 60-year average.
Average high72°
Average low53°
Average precipitation0.04 in
Chance of precipitation17%
Record high97° (2017)
Record low46° (2015)
Sat, 0571° / 53°0.07
71 °
South Montesano, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.07 in
Chance of precipitation23%
Record high98° (2017)
Record low44° (2015)
Sun, 0671° / 53°0.07
71 °
South Montesano, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.07 in
Chance of precipitation27%
Record high94° (2024)
Record low46° (1960)
Mon, 0771° / 53°0.04
71 °
South Montesano, Monday, 7 September
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.04 in
Chance of precipitation22%
Record high89° (1981)
Record low43° (1992)
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 South Montesano, 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 South Montesano, 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.