Monthly outlook for Saint Clair, WA: average high 65.5°, average low 46.7°. That is 3.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 6 days and 2.7 inches. The warmest day looks like 16 October (72.1°), the coolest 12 October (41°).
65.5°/46.7°
Average high / low
+3.3°
Above normal
2 / 6
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
65.1°
60.6°
+2.5°
20 October – 29 October
66.3°
56.9°
+5.2°
30 October – 8 November
at normal
53.7°
—
October records over 66 years
87.4°1 October 1987All-time high
29.5°28 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Olympia (8 mi).
Sun, 1164° / 42°0
64 °
Saint Clair, Sunday, 11 October
Clear. High 64°, low 42°.
Pressure29.97 inHg
Wind8.8 mph NE
Humidity57%
Visibility6.2 mi
Dew point43°
Mon, 1263° / 41°0
63 °
Saint Clair, Monday, 12 October
Clear. High 63°, low 41°.
Pressure30.06 inHg
Wind1.1 mph NE
Humidity58%
Visibility6.2 mi
Dew point43°
Tue, 1364° / 43°0
64 °
Saint Clair, Tuesday, 13 October
Clear. High 64°, low 43°.
Pressure30.15 inHg
Wind1.1 mph W
Humidity60%
Visibility6.2 mi
Dew point44°
Wed, 1465° / 46°0
65 °
Saint Clair, Wednesday, 14 October
Clear. High 65°, low 46°.
Pressure30.24 inHg
Wind1.3 mph W
Humidity66%
Visibility6.2 mi
Dew point48°
Thu, 1571° / 49°0
71 °
Saint Clair, Thursday, 15 October
Clear. High 71°, low 49°.
Pressure30.30 inHg
Wind4.3 mph NE
Humidity72%
Visibility—
Dew point50°
Fri, 1672° / 46°0
72 °
Saint Clair, Friday, 16 October
Overcast. High 72°, low 46°.
Pressure30.24 inHg
Wind4.3 mph N
Humidity36%
Visibility—
Dew point33°
Sat, 1770° / 48°0
70 °
Saint Clair, Saturday, 17 October
Overcast. High 70°, low 48°.
Pressure30.15 inHg
Wind3 mph SW
Humidity35%
Visibility—
Dew point33°
Sun, 1868° / 50°0
68 °
Saint Clair, Sunday, 18 October
Overcast. High 68°, low 50°.
Pressure30.15 inHg
Wind6 mph SW
Humidity57%
Visibility—
Dew point45°
Mon, 1957° / 52°0.65
57 °
Saint Clair, Monday, 19 October
Rain. High 57°, low 52°.
Pressure30.03 inHg
Wind8.7 mph SW
Humidity86%
Visibility—
Dew point53°
Tue, 2061° / 48°0.17
61 °
Saint Clair, Tuesday, 20 October
Light rain. High 61°, low 48°.
Pressure30.12 inHg
Wind7.8 mph SW
Humidity70%
Visibility—
Dew point47°
Wed, 2161° / 47°0
61 °
Saint Clair, Wednesday, 21 October
Overcast. High 61°, low 47°.
Pressure30.21 inHg
Wind5 mph S
Humidity72%
Visibility—
Dew point46°
Thu, 2271° / 47°0
71 °
Saint Clair, Thursday, 22 October
Overcast. High 71°, low 47°.
Pressure30.15 inHg
Wind2.6 mph S
Humidity44%
Visibility—
Dew point37°
Fri, 2369° / 47°0
69 °
Saint Clair, Friday, 23 October
Partly cloudy. High 69°, low 47°.
Pressure30.12 inHg
Wind5 mph SW
Humidity49%
Visibility—
Dew point41°
Sat, 2470° / 48°0
70 °
Saint Clair, Saturday, 24 October
Clear. High 70°, low 48°.
Pressure30.03 inHg
Wind2.9 mph S
Humidity63%
Visibility—
Dew point48°
Sun, 2566° / 47°0
66 °
Saint Clair, Sunday, 25 October
Overcast. High 66°, low 47°.
Pressure30.03 inHg
Wind2.2 mph SW
Humidity68%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2656° / 45°0.23
56 °
Saint Clair, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.23 in
Chance of precipitation52%
Record high69° (1965)
Record low34° (1970)
Tue, 2756° / 44°0.21
56 °
Saint Clair, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.21 in
Chance of precipitation40%
Record high67° (1968)
Record low30° (2023)
Wed, 2855° / 44°0.24
55 °
Saint Clair, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.24 in
Chance of precipitation53%
Record high69° (1962)
Record low29° (2023)
Thu, 2955° / 44°0.17
55 °
Saint Clair, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.17 in
Chance of precipitation48%
Record high69° (1962)
Record low31° (1971)
Fri, 3055° / 44°0.21
55 °
Saint Clair, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.21 in
Chance of precipitation55%
Record high64° (1987)
Record low29° (2019)
Sat, 3154° / 44°0.3
54 °
Saint Clair, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.3 in
Chance of precipitation52%
Record high65° (1964)
Record low31° (2002)
Sun, 0155° / 43°0.23
55 °
Saint Clair, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.23 in
Chance of precipitation50%
Record high66° (1981)
Record low32° (2002)
Mon, 0254° / 43°0.22
54 °
Saint Clair, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.22 in
Chance of precipitation55%
Record high66° (1962)
Record low34° (2002)
Tue, 0354° / 44°0.25
54 °
Saint Clair, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.25 in
Chance of precipitation60%
Record high64° (2010)
Record low32° (1973)
Wed, 0454° / 44°0.31
54 °
Saint Clair, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.31 in
Chance of precipitation60%
Record high67° (1980)
Record low32° (2003)
Thu, 0553° / 43°0.2
53 °
Saint Clair, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.2 in
Chance of precipitation63%
Record high65° (1980)
Record low27° (1973)
Fri, 0653° / 43°0.31
53 °
Saint Clair, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.31 in
Chance of precipitation62%
Record high60° (1999)
Record low31° (2003)
Sat, 0753° / 43°0.27
53 °
Saint Clair, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low43°
Average precipitation0.27 in
Chance of precipitation60%
Record high62° (1962)
Record low32° (2003)
Sun, 0853° / 42°0.19
53 °
Saint Clair, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.19 in
Chance of precipitation50%
Record high67° (2016)
Record low31° (2020)
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 Saint Clair, 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 Saint Clair, 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.