Monthly outlook for Charleston, WA: average high 59.6°, average low 44.8°. That is 3.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 9 days and 3.5 inches. The warmest day looks like 21 October (67.2°), the coolest 28 October (41.1°).
59.6°/44.8°
Average high / low
+3.4°
Above normal
3 / 9
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
60°
54.3°
+3.1°
30 October – 8 November
58.9°
51.3°
+4.2°
9 November – 18 November
at normal
48.6°
—
October records over 66 years
83.8°1 October 1987All-time high
28.6°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Bremerton (3 mi).
Wed, 2167° / 45°0
67 °
Charleston, Wednesday, 21 October
Clear. High 67°, low 45°.
Pressure29.94 inHg
Wind2.3 mph E
Humidity57%
Visibility6.2 mi
Dew point44°
Thu, 2257° / 45°0.03
57 °
Charleston, Thursday, 22 October
Light rain. High 57°, low 45°.
Pressure29.97 inHg
Wind0.8 mph SE
Humidity67%
Visibility6.2 mi
Dew point44°
Fri, 2354° / 43°0
54 °
Charleston, Friday, 23 October
Partly cloudy. High 54°, low 43°.
Pressure30.33 inHg
Wind1.1 mph SW
Humidity78%
Visibility6.2 mi
Dew point45°
Sat, 2449° / 44°0
49 °
Charleston, Saturday, 24 October
Overcast. High 49°, low 44°.
Pressure30.18 inHg
Wind4.5 mph N
Humidity90%
Visibility—
Dew point44°
Sun, 2559° / 43°0
59 °
Charleston, Sunday, 25 October
Overcast. High 59°, low 43°.
Pressure30.21 inHg
Wind7 mph N
Humidity85%
Visibility—
Dew point46°
Mon, 2661° / 42°0
61 °
Charleston, Monday, 26 October
Overcast. High 61°, low 42°.
Pressure30.18 inHg
Wind7.1 mph NE
Humidity48%
Visibility—
Dew point34°
Tue, 2764° / 43°0
64 °
Charleston, Tuesday, 27 October
Overcast. High 64°, low 43°.
Pressure30.21 inHg
Wind5.4 mph NE
Humidity42%
Visibility—
Dew point31°
Wed, 2864° / 41°0
64 °
Charleston, Wednesday, 28 October
Mostly clear. High 64°, low 41°.
Pressure30.09 inHg
Wind4.3 mph N
Humidity41%
Visibility—
Dew point31°
Thu, 2960° / 41°0
60 °
Charleston, Thursday, 29 October
Overcast. High 60°, low 41°.
Pressure29.94 inHg
Wind4 mph NE
Humidity45%
Visibility—
Dew point31°
Fri, 3059° / 41°0.01
59 °
Charleston, Friday, 30 October
Light rain. High 59°, low 41°.
Pressure29.80 inHg
Wind4 mph S
Humidity54%
Visibility—
Dew point35°
Sat, 3158° / 45°0.01
58 °
Charleston, Saturday, 31 October
Light rain. High 58°, low 45°.
Pressure29.80 inHg
Wind6.6 mph NE
Humidity59%
Visibility—
Dew point40°
Sun, 0161° / 49°0.26
61 °
Charleston, Sunday, 1 November
Rain. High 61°, low 49°.
Pressure30.00 inHg
Wind9.5 mph SW
Humidity80%
Visibility—
Dew point49°
Mon, 0259° / 50°0.06
59 °
Charleston, Monday, 2 November
Light rain. High 59°, low 50°.
Pressure30.18 inHg
Wind6.3 mph NE
Humidity88%
Visibility—
Dew point48°
Tue, 0361° / 47°0
61 °
Charleston, Tuesday, 3 November
Overcast. High 61°, low 47°.
Pressure29.88 inHg
Wind7 mph NE
Humidity71%
Visibility—
Dew point46°
Wed, 0456° / 52°0.18
56 °
Charleston, Wednesday, 4 November
Light rain. High 56°, low 52°.
Pressure29.65 inHg
Wind6.9 mph S
Humidity98%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0551° / 42°0.2
51 °
Charleston, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.2 in
Chance of precipitation65%
Record high62° (1997)
Record low26° (1973)
Fri, 0650° / 42°0.28
50 °
Charleston, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.28 in
Chance of precipitation60%
Record high57° (1976)
Record low32° (2003)
Sat, 0750° / 42°0.22
50 °
Charleston, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.22 in
Chance of precipitation58%
Record high59° (1976)
Record low32° (2017)
Sun, 0850° / 42°0.17
50 °
Charleston, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.17 in
Chance of precipitation52%
Record high64° (2016)
Record low30° (1977)
Mon, 0949° / 41°0.24
49 °
Charleston, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.24 in
Chance of precipitation62%
Record high62° (2025)
Record low26° (2022)
Tue, 1050° / 41°0.19
50 °
Charleston, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.19 in
Chance of precipitation48%
Record high61° (2016)
Record low31° (1986)
Wed, 1150° / 42°0.26
50 °
Charleston, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high50°
Average low42°
Average precipitation0.26 in
Chance of precipitation57%
Record high59° (1996)
Record low29° (1985)
Thu, 1249° / 42°0.26
49 °
Charleston, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low42°
Average precipitation0.26 in
Chance of precipitation68%
Record high57° (2025)
Record low29° (1985)
Fri, 1349° / 41°0.3
49 °
Charleston, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.3 in
Chance of precipitation55%
Record high60° (1967)
Record low32° (1985)
Sat, 1449° / 41°0.29
49 °
Charleston, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.29 in
Chance of precipitation57%
Record high60° (1969)
Record low32° (1964)
Sun, 1548° / 41°0.27
48 °
Charleston, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low41°
Average precipitation0.27 in
Chance of precipitation67%
Record high56° (2001)
Record low32° (1982)
Mon, 1647° / 40°0.22
47 °
Charleston, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.22 in
Chance of precipitation70%
Record high57° (1965)
Record low32° (1961)
Tue, 1747° / 40°0.26
47 °
Charleston, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.26 in
Chance of precipitation68%
Record high59° (2008)
Record low29° (1977)
Wed, 1847° / 39°0.19
47 °
Charleston, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low39°
Average precipitation0.19 in
Chance of precipitation57%
Record high54° (1965)
Record low28° (1977)
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 Charleston, 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 Charleston, 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.