Monthly outlook for Allyn, WA: average high 59.9°, average low 44.5°. That is 0.5° above the climate normal for October. Precipitation is expected on 4 days (about 5.5 inches), against a normal of 7 days and 2.6 inches. The warmest day looks like 15 October (68.7°), the coolest 12 October (38.3°).
59.9°/44.5°
Average high / low
+0.5°
Above normal
4 / 7
Wet days / normal
5.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
63.4°
60.1°
+1.9°
20 October – 29 October
53.9°
56.2°
-1.2°
30 October – 8 November
at normal
53.1°
—
October records over 66 years
87.1°1 October 1987All-time high
28.6°28 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Grapeview (4 mi).
Sun, 1163° / 41°0
63 °
Allyn, Sunday, 11 October
Clear. High 63°, low 41°.
Pressure29.97 inHg
Wind6.7 mph NE
Humidity45%
Visibility6.2 mi
Dew point38°
Mon, 1262° / 38°0
62 °
Allyn, Monday, 12 October
Clear. High 62°, low 38°.
Pressure30.06 inHg
Wind3.6 mph SW
Humidity52%
Visibility6.2 mi
Dew point40°
Tue, 1363° / 39°0
63 °
Allyn, Tuesday, 13 October
Mostly clear. High 63°, low 39°.
Pressure30.12 inHg
Wind1.9 mph SW
Humidity51%
Visibility6.2 mi
Dew point41°
Wed, 1465° / 42°0
65 °
Allyn, Wednesday, 14 October
Mostly clear. High 65°, low 42°.
Pressure30.21 inHg
Wind4.2 mph NE
Humidity55%
Visibility—
Dew point40°
Thu, 1569° / 46°0
69 °
Allyn, Thursday, 15 October
Clear. High 69°, low 46°.
Pressure30.21 inHg
Wind5 mph NW
Humidity61%
Visibility—
Dew point46°
Fri, 1668° / 44°0
68 °
Allyn, Friday, 16 October
Overcast. High 68°, low 44°.
Pressure30.30 inHg
Wind3.9 mph N
Humidity50%
Visibility—
Dew point38°
Sat, 1768° / 43°0
68 °
Allyn, Saturday, 17 October
Overcast. High 68°, low 43°.
Pressure30.12 inHg
Wind3 mph SW
Humidity37%
Visibility—
Dew point32°
Sun, 1860° / 45°0.02
60 °
Allyn, Sunday, 18 October
Light rain. High 60°, low 45°.
Pressure30.15 inHg
Wind5.7 mph SW
Humidity69%
Visibility—
Dew point46°
Mon, 1961° / 52°0
61 °
Allyn, Monday, 19 October
Overcast. High 61°, low 52°.
Pressure30.03 inHg
Wind7.8 mph SW
Humidity66%
Visibility—
Dew point46°
Tue, 2051° / 49°0.36
51 °
Allyn, Tuesday, 20 October
Light rain. High 51°, low 49°.
Pressure29.88 inHg
Wind7.6 mph S
Humidity96%
Visibility—
Dew point49°
Wed, 2155° / 48°0.51
55 °
Allyn, Wednesday, 21 October
Rain. High 55°, low 48°.
Pressure30.03 inHg
Wind9.9 mph S
Humidity84%
Visibility—
Dew point47°
Thu, 2254° / 49°2.29
54 °
Allyn, Thursday, 22 October
Heavy rain. High 54°, low 49°.
Pressure29.97 inHg
Wind16.6 mph SW
Humidity94%
Visibility—
Dew point51°
Fri, 2360° / 46°0
60 °
Allyn, Friday, 23 October
Overcast. High 60°, low 46°.
Pressure30.18 inHg
Wind8.8 mph SW
Humidity83%
Visibility—
Dew point48°
Sat, 2452° / 45°2.31
52 °
Allyn, Saturday, 24 October
Heavy rain. High 52°, low 45°.
Pressure30.00 inHg
Wind11.7 mph SW
Humidity98%
Visibility—
Dew point45°
Sun, 2552° / 42°0.04
52 °
Allyn, Sunday, 25 October
Light rain. High 52°, low 42°.
Pressure29.74 inHg
Wind11.6 mph SW
Humidity79%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2655° / 46°0.22
55 °
Allyn, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.22 in
Chance of precipitation55%
Record high69° (1965)
Record low36° (2020)
Tue, 2755° / 46°0.23
55 °
Allyn, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.23 in
Chance of precipitation40%
Record high66° (1968)
Record low29° (2023)
Wed, 2855° / 45°0.23
55 °
Allyn, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.23 in
Chance of precipitation52%
Record high68° (1962)
Record low29° (2023)
Thu, 2954° / 45°0.17
54 °
Allyn, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.17 in
Chance of precipitation45%
Record high68° (1962)
Record low34° (2023)
Fri, 3054° / 45°0.21
54 °
Allyn, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.21 in
Chance of precipitation52%
Record high62° (1987)
Record low36° (1991)
Sat, 3154° / 45°0.28
54 °
Allyn, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.28 in
Chance of precipitation50%
Record high63° (1964)
Record low33° (1984)
Sun, 0154° / 45°0.22
54 °
Allyn, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.22 in
Chance of precipitation53%
Record high65° (1981)
Record low35° (1973)
Mon, 0254° / 45°0.22
54 °
Allyn, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.22 in
Chance of precipitation55%
Record high66° (1962)
Record low36° (1973)
Tue, 0353° / 45°0.24
53 °
Allyn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low45°
Average precipitation0.24 in
Chance of precipitation55%
Record high64° (2010)
Record low34° (2017)
Wed, 0454° / 45°0.3
54 °
Allyn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.3 in
Chance of precipitation60%
Record high66° (1980)
Record low34° (2003)
Thu, 0553° / 44°0.19
53 °
Allyn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.19 in
Chance of precipitation60%
Record high64° (1997)
Record low32° (1973)
Fri, 0652° / 44°0.3
52 °
Allyn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.3 in
Chance of precipitation58%
Record high58° (1976)
Record low35° (2017)
Sat, 0752° / 44°0.26
52 °
Allyn, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.26 in
Chance of precipitation67%
Record high60° (1976)
Record low35° (2017)
Sun, 0852° / 44°0.17
52 °
Allyn, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.17 in
Chance of precipitation52%
Record high66° (2016)
Record low36° (2020)
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 Allyn, 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 Allyn, 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.