Monthly outlook for Santiago, WA: average high 52.9°, average low 46.1°. That is 0.8° above the climate normal for October. Precipitation is expected on 9 days (about 7.7 inches), against a normal of 10 days and 8.2 inches. The warmest day looks like 3 November (56.6°), the coolest 1 November (39.7°).
52.9°/46.1°
Average high / low
+0.8°
Above normal
9 / 10
Wet days / normal
7.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
53.4°
52°
+0.7°
8 November – 17 November
52.1°
50.1°
+1.1°
18 November – 27 November
at normal
47.4°
—
October records over 66 years
76.3°15 October 2022All-time high
26.8°30 October 2019All-time low
Fri, 3051° / 43°0.25
51 °
Santiago, Friday, 30 October
Rain. High 51°, low 43°.
Pressure29.88 inHg
Wind13.9 mph SE
Humidity81%
Visibility6.2 mi
Dew point43°
Sat, 3154° / 42°0
54 °
Santiago, Saturday, 31 October
Overcast. High 54°, low 42°.
Pressure30.00 inHg
Wind5.7 mph SE
Humidity75%
Visibility6.2 mi
Dew point44°
Sun, 0151° / 40°0
51 °
Santiago, Sunday, 1 November
Clear. High 51°, low 40°.
Pressure30.03 inHg
Wind1.9 mph S
Humidity69%
Visibility6.2 mi
Dew point41°
Mon, 0256° / 41°0
56 °
Santiago, Monday, 2 November
Overcast. High 56°, low 41°.
Pressure30.18 inHg
Wind8.4 mph SE
Humidity68%
Visibility6.2 mi
Dew point42°
Tue, 0357° / 46°0
57 °
Santiago, Tuesday, 3 November
Clear. High 57°, low 46°.
Pressure30.09 inHg
Wind6 mph E
Humidity67%
Visibility—
Dew point45°
Wed, 0455° / 44°0
55 °
Santiago, Wednesday, 4 November
Overcast. High 55°, low 44°.
Pressure29.77 inHg
Wind9.2 mph E
Humidity66%
Visibility—
Dew point43°
Thu, 0553° / 49°0
53 °
Santiago, Thursday, 5 November
Overcast. High 53°, low 49°.
Pressure29.83 inHg
Wind14.3 mph E
Humidity82%
Visibility—
Dew point47°
Fri, 0654° / 50°0.27
54 °
Santiago, Friday, 6 November
Light rain. High 54°, low 50°.
Pressure30.06 inHg
Wind17.3 mph S
Humidity93%
Visibility—
Dew point51°
Sat, 0755° / 52°0.8
55 °
Santiago, Saturday, 7 November
Rain. High 55°, low 52°.
Pressure29.88 inHg
Wind24.2 mph S
Humidity66%
Visibility—
Dew point43°
Sun, 0854° / 47°0.02
54 °
Santiago, Sunday, 8 November
Light rain. High 54°, low 47°.
Pressure29.97 inHg
Wind16.9 mph SE
Humidity70%
Visibility—
Dew point43°
Mon, 0953° / 50°0.59
53 °
Santiago, Monday, 9 November
Rain. High 53°, low 50°.
Pressure29.47 inHg
Wind28.3 mph E
Humidity88%
Visibility—
Dew point47°
Tue, 1052° / 49°0.85
52 °
Santiago, Tuesday, 10 November
Rain. High 52°, low 49°.
Pressure29.21 inHg
Wind41 mph W
Humidity88%
Visibility—
Dew point46°
Wed, 1151° / 48°0.81
51 °
Santiago, Wednesday, 11 November
Rain. High 51°, low 48°.
Pressure29.59 inHg
Wind23.9 mph W
Humidity84%
Visibility—
Dew point46°
Thu, 1252° / 45°0.53
52 °
Santiago, Thursday, 12 November
Rain. High 52°, low 45°.
Pressure29.41 inHg
Wind33.1 mph SE
Humidity91%
Visibility—
Dew point43°
Fri, 1352° / 47°2.87
52 °
Santiago, Friday, 13 November
Heavy rain. High 52°, low 47°.
Pressure29.68 inHg
Wind26.9 mph SE
Humidity94%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1450° / 43°0.48
50 °
Santiago, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.48 in
Chance of precipitation62%
Record high59° (1965)
Record low29° (2023)
Sun, 1550° / 42°0.62
50 °
Santiago, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.62 in
Chance of precipitation68%
Record high57° (1997)
Record low28° (2022)
Mon, 1649° / 42°0.57
49 °
Santiago, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.57 in
Chance of precipitation77%
Record high58° (1965)
Record low29° (2023)
Tue, 1749° / 41°0.47
49 °
Santiago, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.47 in
Chance of precipitation67%
Record high58° (1965)
Record low28° (2022)
Wed, 1848° / 41°0.44
48 °
Santiago, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low41°
Average precipitation0.44 in
Chance of precipitation65%
Record high55° (1965)
Record low26° (2022)
Thu, 1949° / 42°0.62
49 °
Santiago, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.62 in
Chance of precipitation73%
Record high60° (1987)
Record low28° (2022)
Fri, 2048° / 41°0.56
48 °
Santiago, Friday, 20 November
Climate normal for this date — 60-year average.
Average high48°
Average low41°
Average precipitation0.56 in
Chance of precipitation62%
Record high59° (2002)
Record low30° (1977)
Sat, 2147° / 40°0.52
47 °
Santiago, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.52 in
Chance of precipitation65%
Record high57° (2017)
Record low28° (2019)
Sun, 2247° / 40°0.49
47 °
Santiago, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.49 in
Chance of precipitation65%
Record high56° (2017)
Record low18° (1985)
Mon, 2347° / 40°0.69
47 °
Santiago, Monday, 23 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.69 in
Chance of precipitation77%
Record high55° (2017)
Record low15° (1985)
Tue, 2447° / 40°0.62
47 °
Santiago, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.62 in
Chance of precipitation72%
Record high55° (2022)
Record low18° (1985)
Wed, 2547° / 40°0.46
47 °
Santiago, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.46 in
Chance of precipitation80%
Record high54° (2014)
Record low25° (1985)
Thu, 2647° / 40°0.44
47 °
Santiago, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.44 in
Chance of precipitation67%
Record high54° (2017)
Record low28° (2023)
Fri, 2747° / 40°0.54
47 °
Santiago, Friday, 27 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.54 in
Chance of precipitation68%
Record high56° (2002)
Record low27° (1985)
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 Santiago, 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 Santiago, 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.