Monthly outlook for Dayton, WA: average high 63.8°, average low 46.4°. That is 1° above the climate normal for October. Precipitation is expected on 0 days (about 0.1 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 9 October (71.6°), the coolest 13 October (34.8°).
63.8°/46.4°
Average high / low
+1°
Above normal
0 / 4
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
63.1°
62.8°
+0.1°
19 October – 28 October
65.1°
59.4°
+3.1°
29 October – 7 November
at normal
53.8°
—
October records over 66 years
89.6°2 October 1975All-time high
20.3°30 October 2019All-time low
Sat, 1059° / 38°0
59 °
Dayton, Saturday, 10 October
Clear. High 59°, low 38°.
Pressure29.80 inHg
Wind9.5 mph SW
Humidity46%
Visibility6.2 mi
Dew point32°
Sun, 1151° / 38°0.04
51 °
Dayton, Sunday, 11 October
Light rain. High 51°, low 38°.
Pressure29.94 inHg
Wind10.2 mph NE
Humidity56%
Visibility6.2 mi
Dew point32°
Mon, 1255° / 36°0
55 °
Dayton, Monday, 12 October
Clear. High 55°, low 36°.
Pressure30.09 inHg
Wind2.9 mph W
Humidity48%
Visibility6.2 mi
Dew point31°
Tue, 1360° / 35°0
60 °
Dayton, Tuesday, 13 October
Clear. High 60°, low 35°.
Pressure30.15 inHg
Wind2.8 mph NW
Humidity41%
Visibility6.2 mi
Dew point30°
Wed, 1465° / 50°0
65 °
Dayton, Wednesday, 14 October
Partly cloudy. High 65°, low 50°.
Pressure30.21 inHg
Wind13.3 mph SW
Humidity37%
Visibility—
Dew point33°
Thu, 1568° / 50°0
68 °
Dayton, Thursday, 15 October
Clear. High 68°, low 50°.
Pressure30.30 inHg
Wind7.8 mph N
Humidity45%
Visibility—
Dew point39°
Fri, 1667° / 51°0
67 °
Dayton, Friday, 16 October
Overcast. High 67°, low 51°.
Pressure30.33 inHg
Wind6.4 mph W
Humidity27%
Visibility—
Dew point27°
Sat, 1767° / 53°0
67 °
Dayton, Saturday, 17 October
Overcast. High 67°, low 53°.
Pressure30.15 inHg
Wind5.8 mph SE
Humidity33%
Visibility—
Dew point33°
Sun, 1867° / 53°0
67 °
Dayton, Sunday, 18 October
Overcast. High 67°, low 53°.
Pressure30.00 inHg
Wind6.8 mph S
Humidity33%
Visibility—
Dew point32°
Mon, 1962° / 48°0
62 °
Dayton, Monday, 19 October
Overcast. High 62°, low 48°.
Pressure29.97 inHg
Wind19.5 mph SW
Humidity43%
Visibility—
Dew point35°
Tue, 2060° / 45°0
60 °
Dayton, Tuesday, 20 October
Mostly clear. High 60°, low 45°.
Pressure30.24 inHg
Wind9.4 mph S
Humidity47%
Visibility—
Dew point34°
Wed, 2168° / 51°0
68 °
Dayton, Wednesday, 21 October
Partly cloudy. High 68°, low 51°.
Pressure30.12 inHg
Wind16.5 mph SW
Humidity22%
Visibility—
Dew point24°
Thu, 2265° / 49°0
65 °
Dayton, Thursday, 22 October
Partly cloudy. High 65°, low 49°.
Pressure30.27 inHg
Wind5.7 mph N
Humidity40%
Visibility—
Dew point35°
Fri, 2366° / 49°0
66 °
Dayton, Friday, 23 October
Clear. High 66°, low 49°.
Pressure30.09 inHg
Wind6.5 mph NW
Humidity28%
Visibility—
Dew point27°
Sat, 2469° / 52°0
69 °
Dayton, Saturday, 24 October
Clear. High 69°, low 52°.
Pressure30.00 inHg
Wind5.3 mph NW
Humidity23%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2559° / 42°0.08
59 °
Dayton, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high59°
Average low42°
Average precipitation0.08 in
Chance of precipitation38%
Record high75° (1965)
Record low21° (2020)
Mon, 2658° / 42°0.09
58 °
Dayton, Monday, 26 October
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.09 in
Chance of precipitation38%
Record high74° (1986)
Record low24° (2020)
Tue, 2756° / 40°0.09
56 °
Dayton, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.09 in
Chance of precipitation42%
Record high73° (1965)
Record low27° (1970)
Wed, 2856° / 41°0.07
56 °
Dayton, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.07 in
Chance of precipitation43%
Record high70° (1968)
Record low24° (1991)
Thu, 2955° / 40°0.09
55 °
Dayton, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.09 in
Chance of precipitation42%
Record high72° (1965)
Record low20° (2019)
Fri, 3055° / 39°0.08
55 °
Dayton, Friday, 30 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.08 in
Chance of precipitation30%
Record high68° (2008)
Record low20° (2019)
Sat, 3153° / 40°0.12
53 °
Dayton, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.12 in
Chance of precipitation43%
Record high72° (1988)
Record low20° (2002)
Sun, 0154° / 39°0.13
54 °
Dayton, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.13 in
Chance of precipitation38%
Record high75° (1965)
Record low20° (2002)
Mon, 0254° / 38°0.07
54 °
Dayton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1981)
Record low15° (1991)
Tue, 0355° / 39°0.04
55 °
Dayton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.04 in
Chance of precipitation18%
Record high69° (1975)
Record low18° (1973)
Wed, 0455° / 40°0.12
55 °
Dayton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.12 in
Chance of precipitation47%
Record high72° (1975)
Record low25° (1973)
Thu, 0553° / 39°0.1
53 °
Dayton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.1 in
Chance of precipitation42%
Record high69° (1975)
Record low20° (1973)
Fri, 0653° / 38°0.11
53 °
Dayton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation47%
Record high69° (2014)
Record low22° (2003)
Sat, 0753° / 38°0.13
53 °
Dayton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.13 in
Chance of precipitation42%
Record high68° (1978)
Record low24° (2003)
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 Dayton, 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 Dayton, 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.