Monthly outlook for Allyn, WA: average high 61.8°, average low 43.3°. That is 1.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 6 days and 2.5 inches. The warmest day looks like 18 October (65.6°), the coolest 11 October (38.8°).
61.8°/43.3°
Average high / low
+1.3°
Above normal
2 / 6
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
61.7°
60.4°
+0.8°
19 October – 28 October
61.8°
56.7°
+2.9°
29 October – 7 November
at normal
53.3°
—
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).
Sat, 1060° / 43°0
60 °
Allyn, Saturday, 10 October
Light rain. High 60°, low 43°.
Pressure29.85 inHg
Wind6.7 mph NE
Humidity65%
Visibility6.2 mi
Dew point43°
Sun, 1161° / 39°0
61 °
Allyn, Sunday, 11 October
Clear. High 61°, low 39°.
Pressure29.97 inHg
Wind5.7 mph NE
Humidity43%
Visibility6.2 mi
Dew point37°
Mon, 1261° / 39°0
61 °
Allyn, Monday, 12 October
Clear. High 61°, low 39°.
Pressure30.06 inHg
Wind3.6 mph SW
Humidity51%
Visibility6.2 mi
Dew point39°
Tue, 1357° / 40°0.03
57 °
Allyn, Tuesday, 13 October
Light rain. High 57°, low 40°.
Pressure30.12 inHg
Wind10.7 mph SW
Humidity83%
Visibility—
Dew point45°
Wed, 1459° / 51°0.06
59 °
Allyn, Wednesday, 14 October
Light rain. High 59°, low 51°.
Pressure30.30 inHg
Wind9.2 mph SW
Humidity99%
Visibility—
Dew point52°
Thu, 1565° / 45°0
65 °
Allyn, Thursday, 15 October
Overcast. High 65°, low 45°.
Pressure30.33 inHg
Wind6.4 mph NE
Humidity62%
Visibility—
Dew point44°
Fri, 1664° / 45°0
64 °
Allyn, Friday, 16 October
Overcast. High 64°, low 45°.
Pressure30.30 inHg
Wind4 mph SW
Humidity54%
Visibility—
Dew point39°
Sat, 1764° / 45°0
64 °
Allyn, Saturday, 17 October
Overcast. High 64°, low 45°.
Pressure30.27 inHg
Wind4.2 mph NE
Humidity67%
Visibility—
Dew point45°
Sun, 1866° / 47°0
66 °
Allyn, Sunday, 18 October
Overcast. High 66°, low 47°.
Pressure30.18 inHg
Wind2.6 mph S
Humidity67%
Visibility—
Dew point45°
Mon, 1961° / 45°0.08
61 °
Allyn, Monday, 19 October
Light rain. High 61°, low 45°.
Pressure30.06 inHg
Wind6.7 mph NE
Humidity67%
Visibility—
Dew point45°
Tue, 2059° / 45°0.03
59 °
Allyn, Tuesday, 20 October
Light rain. High 59°, low 45°.
Pressure30.21 inHg
Wind3.2 mph SE
Humidity80%
Visibility—
Dew point46°
Wed, 2162° / 40°0
62 °
Allyn, Wednesday, 21 October
Clear. High 62°, low 40°.
Pressure30.30 inHg
Wind4.5 mph N
Humidity64%
Visibility—
Dew point40°
Thu, 2263° / 42°0
63 °
Allyn, Thursday, 22 October
Clear. High 63°, low 42°.
Pressure30.03 inHg
Wind6.4 mph NE
Humidity57%
Visibility—
Dew point39°
Fri, 2365° / 41°0
65 °
Allyn, Friday, 23 October
Clear. High 65°, low 41°.
Pressure29.97 inHg
Wind4 mph NE
Humidity49%
Visibility—
Dew point35°
Sat, 2462° / 41°0
62 °
Allyn, Saturday, 24 October
Partly cloudy. High 62°, low 41°.
Pressure30.00 inHg
Wind5.8 mph NE
Humidity55%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2556° / 47°0.2
56 °
Allyn, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low47°
Average precipitation0.2 in
Chance of precipitation50%
Record high68° (1965)
Record low37° (2020)
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)
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.