Monthly outlook for Santiago, WA: average high 53.6°, average low 44.7°. That is 0.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 10 days and 7.4 inches. The warmest day looks like 4 November (58°), the coolest 23 October (37.9°).
53.6°/44.7°
Average high / low
+0.6°
Above normal
4 / 10
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
52°
53.2°
-0.6°
2 November – 11 November
56.2°
51.2°
+2.7°
12 November – 21 November
at normal
49.1°
—
October records over 66 years
76.3°15 October 2022All-time high
26.8°30 October 2019All-time low
Sat, 2451° / 39°0.52
51 °
Santiago, Saturday, 24 October
Rain. High 51°, low 39°.
Pressure30.15 inHg
Wind9.4 mph SE
Humidity79%
Visibility1.3 mi
Dew point43°
Sun, 2551° / 46°0.57
51 °
Santiago, Sunday, 25 October
Rain. High 51°, low 46°.
Pressure29.88 inHg
Wind17.5 mph SE
Humidity93%
Visibility2.1 mi
Dew point48°
Mon, 2655° / 47°0.1
55 °
Santiago, Monday, 26 October
Light rain. High 55°, low 47°.
Pressure30.03 inHg
Wind3.6 mph E
Humidity81%
Visibility6.2 mi
Dew point48°
Tue, 2751° / 38°0
51 °
Santiago, Tuesday, 27 October
Overcast. High 51°, low 38°.
Pressure30.21 inHg
Wind5.1 mph SW
Humidity91%
Visibility—
Dew point47°
Wed, 2848° / 44°0.08
48 °
Santiago, Wednesday, 28 October
Light rain. High 48°, low 44°.
Pressure30.09 inHg
Wind11.5 mph E
Humidity85%
Visibility—
Dew point42°
Thu, 2948° / 42°0
48 °
Santiago, Thursday, 29 October
Clear. High 48°, low 42°.
Pressure30.00 inHg
Wind5.5 mph SW
Humidity69%
Visibility—
Dew point38°
Fri, 3053° / 41°0.01
53 °
Santiago, Friday, 30 October
Light rain. High 53°, low 41°.
Pressure30.03 inHg
Wind10.6 mph E
Humidity68%
Visibility—
Dew point41°
Sat, 3152° / 45°0.01
52 °
Santiago, Saturday, 31 October
Light rain. High 52°, low 45°.
Pressure30.12 inHg
Wind8 mph E
Humidity74%
Visibility—
Dew point43°
Sun, 0153° / 44°0
53 °
Santiago, Sunday, 1 November
Mostly clear. High 53°, low 44°.
Pressure30.33 inHg
Wind7.8 mph E
Humidity60%
Visibility—
Dew point38°
Mon, 0253° / 44°0
53 °
Santiago, Monday, 2 November
Overcast. High 53°, low 44°.
Pressure30.45 inHg
Wind6.4 mph E
Humidity62%
Visibility—
Dew point39°
Tue, 0357° / 47°0
57 °
Santiago, Tuesday, 3 November
Overcast. High 57°, low 47°.
Pressure30.36 inHg
Wind10.5 mph E
Humidity57%
Visibility—
Dew point41°
Wed, 0458° / 49°0
58 °
Santiago, Wednesday, 4 November
Overcast. High 58°, low 49°.
Pressure30.24 inHg
Wind10.1 mph E
Humidity56%
Visibility—
Dew point41°
Thu, 0558° / 48°0
58 °
Santiago, Thursday, 5 November
Clear. High 58°, low 48°.
Pressure30.12 inHg
Wind10.2 mph SE
Humidity55%
Visibility—
Dew point41°
Fri, 0657° / 52°0
57 °
Santiago, Friday, 6 November
Overcast. High 57°, low 52°.
Pressure30.18 inHg
Wind6.6 mph SE
Humidity69%
Visibility—
Dew point46°
Sat, 0755° / 50°0
55 °
Santiago, Saturday, 7 November
Overcast. High 55°, low 50°.
Pressure30.15 inHg
Wind7.2 mph E
Humidity75%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0851° / 44°0.45
51 °
Santiago, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.45 in
Chance of precipitation67%
Record high61° (2016)
Record low35° (2018)
Mon, 0950° / 43°0.58
50 °
Santiago, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.58 in
Chance of precipitation68%
Record high61° (2025)
Record low29° (2022)
Tue, 1051° / 43°0.44
51 °
Santiago, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.44 in
Chance of precipitation60%
Record high61° (1996)
Record low32° (2022)
Wed, 1151° / 43°0.58
51 °
Santiago, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.58 in
Chance of precipitation70%
Record high59° (1976)
Record low31° (2018)
Thu, 1250° / 44°0.61
50 °
Santiago, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low44°
Average precipitation0.61 in
Chance of precipitation70%
Record high60° (1967)
Record low32° (1985)
Fri, 1350° / 44°0.6
50 °
Santiago, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low44°
Average precipitation0.6 in
Chance of precipitation68%
Record high60° (1967)
Record low31° (1985)
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)
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.