Monthly outlook for Twin, WA: average high 55.4°, average low 51.3°. That is 0.1° below the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 8 days and 3.5 inches. The warmest day looks like 9 October (57.4°), the coolest 23 October (48.2°).
55.4°/51.3°
Average high / low
−0.1°
Below normal
2 / 8
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
55.9°
56.3°
-0.2°
19 October – 28 October
54.5°
53.4°
+0.6°
29 October – 7 November
at normal
50.7°
—
October records over 66 years
76.5°1 October 1987All-time high
23.2°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Snug Harbor (13 mi).
Sat, 1056° / 50°0
56 °
Twin, Saturday, 10 October
Mostly clear. High 56°, low 50°.
Pressure29.85 inHg
Wind9.8 mph SE
Humidity79%
Visibility2.6 mi
Dew point45°
Sun, 1156° / 52°0
56 °
Twin, Sunday, 11 October
Clear. High 56°, low 52°.
Pressure30.06 inHg
Wind11.1 mph SE
Humidity51%
Visibility6.2 mi
Dew point38°
Mon, 1254° / 50°0
54 °
Twin, Monday, 12 October
Clear. High 54°, low 50°.
Pressure30.06 inHg
Wind3.2 mph NE
Humidity75%
Visibility6.2 mi
Dew point46°
Tue, 1355° / 49°0
55 °
Twin, Tuesday, 13 October
Overcast. High 55°, low 49°.
Pressure30.12 inHg
Wind1.4 mph N
Humidity78%
Visibility6.2 mi
Dew point47°
Wed, 1457° / 53°0.03
57 °
Twin, Wednesday, 14 October
Light rain. High 57°, low 53°.
Pressure30.21 inHg
Wind7.8 mph E
Humidity87%
Visibility—
Dew point52°
Thu, 1556° / 53°0
56 °
Twin, Thursday, 15 October
Overcast. High 56°, low 53°.
Pressure30.33 inHg
Wind6.1 mph E
Humidity83%
Visibility—
Dew point50°
Fri, 1656° / 53°0
56 °
Twin, Friday, 16 October
Overcast. High 56°, low 53°.
Pressure30.33 inHg
Wind6.9 mph SE
Humidity80%
Visibility—
Dew point49°
Sat, 1756° / 54°0
56 °
Twin, Saturday, 17 October
Overcast. High 56°, low 54°.
Pressure30.24 inHg
Wind5.4 mph E
Humidity79%
Visibility—
Dew point49°
Sun, 1856° / 53°0
56 °
Twin, Sunday, 18 October
Overcast. High 56°, low 53°.
Pressure30.15 inHg
Wind3.8 mph SE
Humidity79%
Visibility—
Dew point49°
Mon, 1957° / 53°0.09
57 °
Twin, Monday, 19 October
Light rain. High 57°, low 53°.
Pressure30.03 inHg
Wind8.8 mph NW
Humidity97%
Visibility—
Dew point55°
Tue, 2055° / 52°0
55 °
Twin, Tuesday, 20 October
Clear. High 55°, low 52°.
Pressure30.12 inHg
Wind9.4 mph E
Humidity78%
Visibility—
Dew point48°
Wed, 2157° / 52°0
57 °
Twin, Wednesday, 21 October
Clear. High 57°, low 52°.
Pressure29.97 inHg
Wind13.7 mph E
Humidity67%
Visibility—
Dew point46°
Thu, 2252° / 50°0.02
52 °
Twin, Thursday, 22 October
Light rain. High 52°, low 50°.
Pressure30.00 inHg
Wind12.4 mph NW
Humidity76%
Visibility—
Dew point45°
Fri, 2353° / 48°0
53 °
Twin, Friday, 23 October
Mostly clear. High 53°, low 48°.
Pressure30.18 inHg
Wind6.9 mph E
Humidity80%
Visibility—
Dew point44°
Sat, 2453° / 48°0
53 °
Twin, Saturday, 24 October
Mostly clear. High 53°, low 48°.
Pressure30.09 inHg
Wind10.9 mph E
Humidity75%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2553° / 45°0.33
53 °
Twin, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low45°
Average precipitation0.33 in
Chance of precipitation63%
Record high65° (1965)
Record low35° (2020)
Mon, 2652° / 45°0.28
52 °
Twin, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low45°
Average precipitation0.28 in
Chance of precipitation60%
Record high66° (1965)
Record low33° (1970)
Tue, 2752° / 45°0.25
52 °
Twin, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low45°
Average precipitation0.25 in
Chance of precipitation53%
Record high64° (1968)
Record low32° (1971)
Wed, 2852° / 44°0.32
52 °
Twin, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.32 in
Chance of precipitation62%
Record high64° (2017)
Record low31° (2023)
Thu, 2951° / 44°0.2
51 °
Twin, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.2 in
Chance of precipitation52%
Record high65° (1962)
Record low33° (1991)
Fri, 3051° / 44°0.33
51 °
Twin, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.33 in
Chance of precipitation65%
Record high60° (1962)
Record low32° (1991)
Sat, 3151° / 44°0.35
51 °
Twin, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.35 in
Chance of precipitation62%
Record high60° (1962)
Record low23° (1984)
Sun, 0151° / 44°0.29
51 °
Twin, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.29 in
Chance of precipitation50%
Record high62° (1962)
Record low33° (1984)
Mon, 0251° / 44°0.28
51 °
Twin, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.28 in
Chance of precipitation60%
Record high64° (1962)
Record low31° (1994)
Tue, 0351° / 44°0.33
51 °
Twin, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.33 in
Chance of precipitation65%
Record high60° (1970)
Record low32° (2017)
Wed, 0451° / 44°0.36
51 °
Twin, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.36 in
Chance of precipitation68%
Record high61° (2012)
Record low32° (1973)
Thu, 0550° / 43°0.28
50 °
Twin, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.28 in
Chance of precipitation70%
Record high59° (2020)
Record low31° (1973)
Fri, 0650° / 43°0.38
50 °
Twin, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low43°
Average precipitation0.38 in
Chance of precipitation73%
Record high57° (2006)
Record low24° (2017)
Sat, 0749° / 43°0.34
49 °
Twin, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low43°
Average precipitation0.34 in
Chance of precipitation77%
Record high58° (2004)
Record low29° (2017)
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 Twin, 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 Twin, 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.