Monthly outlook for Sudden Valley, WA: average high 74°, average low 54.8°. That is 1.4° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 15 August (80.5°), the coolest 9 August (50.1°).
74°/54.8°
Average high / low
+1.4°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
75.6°
72°
+2°
18 August – 27 August
71.2°
70.2°
+0.6°
28 August – 6 September
at normal
68.6°
—
August records over 66 years
95.2°12 August 2021All-time high
44.2°28 August 1969All-time low
Climate normals and records are computed from the nearest reference point — Bellingham (6 mi).
Sun, 0975° / 50°0
75 °
Sudden Valley, Sunday, 9 August
Overcast. High 75°, low 50°.
Pressure30.06 inHg
Wind5.4 mph SW
Humidity57%
Visibility6.2 mi
Dew point51°
Mon, 1070° / 50°0
70 °
Sudden Valley, Monday, 10 August
Clear. High 70°, low 50°.
Pressure30.09 inHg
Wind5.5 mph W
Humidity58%
Visibility6.2 mi
Dew point52°
Tue, 1173° / 52°0
73 °
Sudden Valley, Tuesday, 11 August
Clear. High 73°, low 52°.
Pressure30.09 inHg
Wind5.7 mph SW
Humidity56%
Visibility6.2 mi
Dew point53°
Wed, 1271° / 55°0
71 °
Sudden Valley, Wednesday, 12 August
Clear. High 71°, low 55°.
Pressure30.00 inHg
Wind5.5 mph SW
Humidity59%
Visibility6.2 mi
Dew point53°
Thu, 1374° / 53°0
74 °
Sudden Valley, Thursday, 13 August
Clear. High 74°, low 53°.
Pressure29.94 inHg
Wind5.8 mph W
Humidity49%
Visibility—
Dew point51°
Fri, 1479° / 57°0
79 °
Sudden Valley, Friday, 14 August
Mostly clear. High 79°, low 57°.
Pressure29.97 inHg
Wind6.2 mph W
Humidity37%
Visibility—
Dew point49°
Sat, 1580° / 60°0
80 °
Sudden Valley, Saturday, 15 August
Clear. High 80°, low 60°.
Pressure30.00 inHg
Wind4.9 mph W
Humidity38%
Visibility—
Dew point51°
Sun, 1677° / 60°0
77 °
Sudden Valley, Sunday, 16 August
Overcast. High 77°, low 60°.
Pressure30.00 inHg
Wind4.7 mph SE
Humidity45%
Visibility—
Dew point53°
Mon, 1777° / 57°0
77 °
Sudden Valley, Monday, 17 August
Partly cloudy. High 77°, low 57°.
Pressure30.00 inHg
Wind5.1 mph SE
Humidity41%
Visibility—
Dew point50°
Tue, 1874° / 56°0
74 °
Sudden Valley, Tuesday, 18 August
Clear. High 74°, low 56°.
Pressure30.03 inHg
Wind7.3 mph SE
Humidity47%
Visibility—
Dew point51°
Wed, 1970° / 54°0
70 °
Sudden Valley, Wednesday, 19 August
Overcast. High 70°, low 54°.
Pressure30.09 inHg
Wind8.4 mph SE
Humidity53%
Visibility—
Dew point51°
Thu, 2071° / 54°0
71 °
Sudden Valley, Thursday, 20 August
Clear. High 71°, low 54°.
Pressure30.06 inHg
Wind6.1 mph SW
Humidity55%
Visibility—
Dew point52°
Fri, 2171° / 53°0
71 °
Sudden Valley, Friday, 21 August
Clear. High 71°, low 53°.
Pressure30.03 inHg
Wind5.4 mph W
Humidity53%
Visibility—
Dew point52°
Sat, 2274° / 56°0
74 °
Sudden Valley, Saturday, 22 August
Overcast. High 74°, low 56°.
Pressure29.94 inHg
Wind10.2 mph SE
Humidity45%
Visibility—
Dew point49°
Sun, 2367° / 54°0
67 °
Sudden Valley, Sunday, 23 August
Overcast. High 67°, low 54°.
Pressure30.06 inHg
Wind10.7 mph S
Humidity55%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2470° / 56°0.08
70 °
Sudden Valley, Monday, 24 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0.08 in
Chance of precipitation25%
Record high84° (1996)
Record low51° (1995)
Tue, 2570° / 56°0.07
70 °
Sudden Valley, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0.07 in
Chance of precipitation22%
Record high90° (1996)
Record low48° (1995)
Wed, 2671° / 56°0.07
71 °
Sudden Valley, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high71°
Average low56°
Average precipitation0.07 in
Chance of precipitation25%
Record high87° (1986)
Record low49° (1977)
Thu, 2770° / 56°0.13
70 °
Sudden Valley, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0.13 in
Chance of precipitation28%
Record high90° (1986)
Record low48° (1965)
Fri, 2870° / 56°0.07
70 °
Sudden Valley, Friday, 28 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0.07 in
Chance of precipitation22%
Record high88° (1967)
Record low44° (1969)
Sat, 2970° / 56°0.1
70 °
Sudden Valley, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0.1 in
Chance of precipitation30%
Record high87° (1996)
Record low47° (1965)
Sun, 3068° / 56°0.12
68 °
Sudden Valley, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0.12 in
Chance of precipitation27%
Record high83° (2022)
Record low47° (1965)
Mon, 3168° / 56°0.1
68 °
Sudden Valley, Monday, 31 August
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0.1 in
Chance of precipitation27%
Record high89° (1987)
Record low48° (1964)
Tue, 0168° / 55°0.12
68 °
Sudden Valley, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high68°
Average low55°
Average precipitation0.12 in
Chance of precipitation27%
Record high84° (1987)
Record low45° (1973)
Wed, 0269° / 55°0.07
69 °
Sudden Valley, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.07 in
Chance of precipitation25%
Record high88° (1988)
Record low46° (1960)
Thu, 0369° / 55°0.08
69 °
Sudden Valley, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.08 in
Chance of precipitation25%
Record high88° (1988)
Record low46° (1975)
Fri, 0468° / 55°0.08
68 °
Sudden Valley, Friday, 4 September
Climate normal for this date — 60-year average.
Average high68°
Average low55°
Average precipitation0.08 in
Chance of precipitation28%
Record high87° (2017)
Record low44° (1970)
Sat, 0568° / 55°0.11
68 °
Sudden Valley, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high68°
Average low55°
Average precipitation0.11 in
Chance of precipitation25%
Record high94° (2017)
Record low47° (1969)
Sun, 0668° / 55°0.09
68 °
Sudden Valley, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high68°
Average low55°
Average precipitation0.09 in
Chance of precipitation33%
Record high83° (1987)
Record low46° (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 Sudden Valley, 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 Sudden Valley, 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.