Monthly outlook for Zillah, WA: average high 54.3°, average low 39.1°. That is 0.8° below the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 23 October (61.8°), the coolest 24 October (29.9°).
54.3°/39.1°
Average high / low
−0.8°
Below normal
2 / 4
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
55.1°
57.4°
-1.3°
1 November – 10 November
53°
52.1°
+0.5°
11 November – 20 November
at normal
48.2°
—
October records over 66 years
89.4°6 October 2014All-time high
21.7°30 October 1991All-time low
Fri, 2362° / 35°0
62 °
Zillah, Friday, 23 October
Clear. High 62°, low 35°.
Pressure30.21 inHg
Wind9.2 mph NW
Humidity42%
Visibility6.2 mi
Dew point34°
Sat, 2458° / 30°0
58 °
Zillah, Saturday, 24 October
Partly cloudy. High 58°, low 30°.
Pressure30.21 inHg
Wind2.8 mph SE
Humidity44%
Visibility6.2 mi
Dew point30°
Sun, 2558° / 42°0
58 °
Zillah, Sunday, 25 October
Light rain. High 58°, low 42°.
Pressure30.00 inHg
Wind2.2 mph W
Humidity41%
Visibility6.2 mi
Dew point31°
Mon, 2658° / 42°0.01
58 °
Zillah, Monday, 26 October
Light rain. High 58°, low 42°.
Pressure30.00 inHg
Wind2.5 mph SW
Humidity56%
Visibility6.2 mi
Dew point38°
Tue, 2760° / 44°0.03
60 °
Zillah, Tuesday, 27 October
Light rain. High 60°, low 44°.
Pressure30.12 inHg
Wind3.5 mph N
Humidity69%
Visibility—
Dew point41°
Wed, 2852° / 41°0.09
52 °
Zillah, Wednesday, 28 October
Light rain. High 52°, low 41°.
Pressure30.24 inHg
Wind11.5 mph N
Humidity56%
Visibility—
Dew point36°
Thu, 2951° / 42°0.19
51 °
Zillah, Thursday, 29 October
Light rain. High 51°, low 42°.
Pressure29.91 inHg
Wind16.7 mph NE
Humidity37%
Visibility—
Dew point25°
Fri, 3046° / 41°0.02
46 °
Zillah, Friday, 30 October
Light rain. High 46°, low 41°.
Pressure30.06 inHg
Wind4.9 mph SE
Humidity82%
Visibility—
Dew point38°
Sat, 3150° / 37°0
50 °
Zillah, Saturday, 31 October
Overcast. High 50°, low 37°.
Pressure30.12 inHg
Wind4.5 mph E
Humidity63%
Visibility—
Dew point32°
Sun, 0152° / 38°0
52 °
Zillah, Sunday, 1 November
Mostly clear. High 52°, low 38°.
Pressure30.33 inHg
Wind4.5 mph E
Humidity49%
Visibility—
Dew point28°
Mon, 0251° / 38°0
51 °
Zillah, Monday, 2 November
Clear. High 51°, low 38°.
Pressure30.56 inHg
Wind3.6 mph E
Humidity56%
Visibility—
Dew point31°
Tue, 0352° / 38°0
52 °
Zillah, Tuesday, 3 November
Overcast. High 52°, low 38°.
Pressure30.65 inHg
Wind3 mph SE
Humidity53%
Visibility—
Dew point29°
Wed, 0452° / 39°0
52 °
Zillah, Wednesday, 4 November
Partly cloudy. High 52°, low 39°.
Pressure30.50 inHg
Wind1.8 mph NW
Humidity50%
Visibility—
Dew point29°
Thu, 0554° / 39°0
54 °
Zillah, Thursday, 5 November
Clear. High 54°, low 39°.
Pressure30.33 inHg
Wind2.2 mph N
Humidity47%
Visibility—
Dew point28°
Fri, 0657° / 40°0
57 °
Zillah, Friday, 6 November
Partly cloudy. High 57°, low 40°.
Pressure30.24 inHg
Wind2.6 mph NE
Humidity46%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0752° / 37°0.06
52 °
Zillah, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation32%
Record high67° (1978)
Record low20° (1973)
Sun, 0851° / 35°0.04
51 °
Zillah, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation22%
Record high60° (1995)
Record low26° (1973)
Mon, 0950° / 35°0.04
50 °
Zillah, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation22%
Record high63° (2016)
Record low25° (2022)
Tue, 1050° / 35°0.05
50 °
Zillah, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.05 in
Chance of precipitation28%
Record high63° (1989)
Record low17° (1986)
Wed, 1150° / 35°0.05
50 °
Zillah, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.05 in
Chance of precipitation25%
Record high67° (1990)
Record low15° (1985)
Thu, 1250° / 35°0.06
50 °
Zillah, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.06 in
Chance of precipitation23%
Record high67° (1999)
Record low8° (1985)
Fri, 1349° / 35°0.07
49 °
Zillah, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation33%
Record high67° (1999)
Record low13° (1985)
Sat, 1450° / 35°0.03
50 °
Zillah, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.03 in
Chance of precipitation18%
Record high66° (2021)
Record low16° (1985)
Sun, 1549° / 35°0.04
49 °
Zillah, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.04 in
Chance of precipitation23%
Record high64° (2021)
Record low19° (1985)
Mon, 1648° / 35°0.04
48 °
Zillah, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.04 in
Chance of precipitation28%
Record high63° (1976)
Record low20° (2014)
Tue, 1748° / 35°0.06
48 °
Zillah, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.06 in
Chance of precipitation33%
Record high68° (2019)
Record low20° (2014)
Wed, 1847° / 33°0.04
47 °
Zillah, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.04 in
Chance of precipitation22%
Record high59° (2008)
Record low18° (1985)
Thu, 1946° / 32°0.09
46 °
Zillah, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.09 in
Chance of precipitation40%
Record high57° (1989)
Record low-2° (1985)
Fri, 2046° / 32°0.07
46 °
Zillah, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.07 in
Chance of precipitation28%
Record high57° (2017)
Record low14° (1985)
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 Zillah, 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 Zillah, 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.