Monthly outlook for Charter Oak, WA: average high 58°, average low 40.5°. That is 1.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 9 days and 5.1 inches. The warmest day looks like 4 November (65°), the coolest 24 October (36.4°).
58°/40.5°
Average high / low
+1.5°
Above normal
4 / 9
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
55°
56.3°
-0.7°
1 November – 10 November
63°
53°
+5.6°
11 November – 20 November
at normal
50°
—
October records over 66 years
87.6°1 October 1987All-time high
28°29 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Hockinson (7 mi).
Fri, 2360° / 40°0
60 °
Charter Oak, Friday, 23 October
Overcast. High 60°, low 40°.
Pressure30.33 inHg
Wind3.8 mph W
Humidity70%
Visibility6.2 mi
Dew point44°
Sat, 2458° / 36°0
58 °
Charter Oak, Saturday, 24 October
Overcast. High 58°, low 36°.
Pressure30.18 inHg
Wind3.1 mph W
Humidity68%
Visibility6.2 mi
Dew point41°
Sun, 2554° / 43°0.78
54 °
Charter Oak, Sunday, 25 October
Rain. High 54°, low 43°.
Pressure30.00 inHg
Wind4.7 mph SE
Humidity94%
Visibility3.1 mi
Dew point48°
Mon, 2655° / 44°0.13
55 °
Charter Oak, Monday, 26 October
Light rain. High 55°, low 44°.
Pressure30.03 inHg
Wind3.7 mph SE
Humidity92%
Visibility6.2 mi
Dew point49°
Tue, 2754° / 42°0
54 °
Charter Oak, Tuesday, 27 October
Overcast. High 54°, low 42°.
Pressure30.24 inHg
Wind4 mph NE
Humidity93%
Visibility—
Dew point47°
Wed, 2861° / 42°0.17
61 °
Charter Oak, Wednesday, 28 October
Rain. High 61°, low 42°.
Pressure30.12 inHg
Wind6.9 mph NW
Humidity61%
Visibility—
Dew point44°
Thu, 2948° / 42°0.32
48 °
Charter Oak, Thursday, 29 October
Rain. High 48°, low 42°.
Pressure30.00 inHg
Wind2.3 mph NE
Humidity84%
Visibility—
Dew point41°
Fri, 3049° / 40°0
49 °
Charter Oak, Friday, 30 October
Overcast. High 49°, low 40°.
Pressure30.09 inHg
Wind3.1 mph NE
Humidity75%
Visibility—
Dew point40°
Sat, 3151° / 41°0
51 °
Charter Oak, Saturday, 31 October
Overcast. High 51°, low 41°.
Pressure30.15 inHg
Wind2.9 mph S
Humidity78%
Visibility—
Dew point40°
Sun, 0158° / 38°0
58 °
Charter Oak, Sunday, 1 November
Partly cloudy. High 58°, low 38°.
Pressure30.30 inHg
Wind3.8 mph W
Humidity66%
Visibility—
Dew point38°
Mon, 0262° / 37°0
62 °
Charter Oak, Monday, 2 November
Mostly clear. High 62°, low 37°.
Pressure30.45 inHg
Wind3.6 mph NE
Humidity52%
Visibility—
Dew point33°
Tue, 0364° / 38°0
64 °
Charter Oak, Tuesday, 3 November
Partly cloudy. High 64°, low 38°.
Pressure30.45 inHg
Wind3.3 mph E
Humidity47%
Visibility—
Dew point32°
Wed, 0465° / 40°0
65 °
Charter Oak, Wednesday, 4 November
Overcast. High 65°, low 40°.
Pressure30.30 inHg
Wind3.6 mph E
Humidity44%
Visibility—
Dew point32°
Thu, 0564° / 40°0
64 °
Charter Oak, Thursday, 5 November
Partly cloudy. High 64°, low 40°.
Pressure30.18 inHg
Wind3.2 mph NE
Humidity44%
Visibility—
Dew point32°
Fri, 0665° / 42°0
65 °
Charter Oak, Friday, 6 November
Overcast. High 65°, low 42°.
Pressure30.21 inHg
Wind2.6 mph NE
Humidity43%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0752° / 42°0.41
52 °
Charter Oak, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.41 in
Chance of precipitation63%
Record high63° (2016)
Record low31° (2001)
Sun, 0852° / 40°0.3
52 °
Charter Oak, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.3 in
Chance of precipitation55%
Record high67° (1976)
Record low27° (2020)
Mon, 0951° / 40°0.28
51 °
Charter Oak, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.28 in
Chance of precipitation62%
Record high64° (1996)
Record low27° (2022)
Tue, 1052° / 40°0.26
52 °
Charter Oak, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.26 in
Chance of precipitation57%
Record high65° (2016)
Record low29° (1978)
Wed, 1152° / 41°0.37
52 °
Charter Oak, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.37 in
Chance of precipitation60%
Record high63° (2016)
Record low26° (1985)
Thu, 1252° / 41°0.38
52 °
Charter Oak, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.38 in
Chance of precipitation65%
Record high62° (1974)
Record low24° (1985)
Fri, 1351° / 40°0.39
51 °
Charter Oak, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.39 in
Chance of precipitation63%
Record high63° (1969)
Record low25° (1978)
Sat, 1451° / 40°0.31
51 °
Charter Oak, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.31 in
Chance of precipitation60%
Record high66° (1999)
Record low25° (1985)
Sun, 1551° / 40°0.32
51 °
Charter Oak, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.32 in
Chance of precipitation63%
Record high62° (2008)
Record low24° (2014)
Mon, 1649° / 40°0.32
49 °
Charter Oak, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.32 in
Chance of precipitation70%
Record high62° (1976)
Record low26° (2014)
Tue, 1749° / 39°0.4
49 °
Charter Oak, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.4 in
Chance of precipitation73%
Record high61° (2008)
Record low26° (1973)
Wed, 1848° / 38°0.29
48 °
Charter Oak, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.29 in
Chance of precipitation58%
Record high58° (1989)
Record low24° (1975)
Thu, 1948° / 38°0.46
48 °
Charter Oak, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.46 in
Chance of precipitation67%
Record high57° (1987)
Record low27° (1977)
Fri, 2049° / 38°0.39
49 °
Charter Oak, Friday, 20 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.39 in
Chance of precipitation58%
Record high65° (2002)
Record low23° (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 Charter Oak, 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 Charter Oak, 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.