Monthly outlook for Santiago, WA: average high 53.4°, average low 46.6°. That is 0.6° above the climate normal for October. Precipitation is expected on 9 days (about 5.6 inches), against a normal of 10 days and 7.5 inches. The warmest day looks like 7 November (60.5°), the coolest 24 October (38.4°).
53.4°/46.6°
Average high / low
+0.6°
Above normal
9 / 10
Wet days / normal
5.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
50.9°
52.9°
-1.2°
3 November – 12 November
57.7°
51.1°
+3.7°
13 November – 22 November
at normal
48.8°
—
October records over 66 years
76.3°15 October 2022All-time high
26.8°30 October 2019All-time low
Sun, 2552° / 43°1.39
52 °
Santiago, Sunday, 25 October
Heavy rain. High 52°, low 43°.
Pressure29.85 inHg
Wind21.1 mph SE
Humidity92%
Visibility1.7 mi
Dew point48°
Mon, 2655° / 48°0.08
55 °
Santiago, Monday, 26 October
Light rain. High 55°, low 48°.
Pressure30.00 inHg
Wind8.3 mph SE
Humidity84%
Visibility6.2 mi
Dew point49°
Tue, 2751° / 44°0.07
51 °
Santiago, Tuesday, 27 October
Light rain. High 51°, low 44°.
Pressure30.03 inHg
Wind1.3 mph SE
Humidity94%
Visibility4.1 mi
Dew point48°
Wed, 2850° / 45°0.85
50 °
Santiago, Wednesday, 28 October
Rain. High 50°, low 45°.
Pressure29.88 inHg
Wind12.3 mph W
Humidity78%
Visibility—
Dew point43°
Thu, 2946° / 42°0.32
46 °
Santiago, Thursday, 29 October
Light rain. High 46°, low 42°.
Pressure29.88 inHg
Wind15.3 mph E
Humidity90%
Visibility—
Dew point40°
Fri, 3050° / 44°0
50 °
Santiago, Friday, 30 October
Clear. High 50°, low 44°.
Pressure30.12 inHg
Wind8.1 mph NW
Humidity71%
Visibility—
Dew point40°
Sat, 3149° / 41°0
49 °
Santiago, Saturday, 31 October
Clear. High 49°, low 41°.
Pressure30.30 inHg
Wind8.7 mph NW
Humidity63%
Visibility—
Dew point35°
Sun, 0149° / 42°0
49 °
Santiago, Sunday, 1 November
Overcast. High 49°, low 42°.
Pressure30.36 inHg
Wind8.2 mph NW
Humidity59%
Visibility—
Dew point35°
Mon, 0254° / 43°0
54 °
Santiago, Monday, 2 November
Clear. High 54°, low 43°.
Pressure30.18 inHg
Wind6.4 mph E
Humidity52%
Visibility—
Dew point35°
Tue, 0358° / 47°0
58 °
Santiago, Tuesday, 3 November
Partly cloudy. High 58°, low 47°.
Pressure30.00 inHg
Wind10.5 mph E
Humidity56%
Visibility—
Dew point41°
Wed, 0456° / 50°0.72
56 °
Santiago, Wednesday, 4 November
Rain. High 56°, low 50°.
Pressure29.71 inHg
Wind24.8 mph S
Humidity96%
Visibility—
Dew point51°
Thu, 0555° / 52°1.04
55 °
Santiago, Thursday, 5 November
Rain. High 55°, low 52°.
Pressure29.85 inHg
Wind32.5 mph S
Humidity98%
Visibility—
Dew point54°
Fri, 0659° / 54°0.73
59 °
Santiago, Friday, 6 November
Rain. High 59°, low 54°.
Pressure30.12 inHg
Wind22 mph S
Humidity86%
Visibility—
Dew point54°
Sat, 0761° / 58°0.01
61 °
Santiago, Saturday, 7 November
Light rain. High 61°, low 58°.
Pressure30.09 inHg
Wind16.8 mph SE
Humidity84%
Visibility—
Dew point56°
Sun, 0858° / 56°0
58 °
Santiago, Sunday, 8 November
Overcast. High 58°, low 56°.
Pressure30.06 inHg
Wind8.1 mph SE
Humidity91%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.