Monthly outlook for Chester, WA: average high 50.9°, average low 35.3°. That is 0.3° below the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 6 days and 1.4 inches. The warmest day looks like 22 October (62.7°), the coolest 24 October (26.4°).
50.9°/35.3°
Average high / low
−0.3°
Below normal
5 / 6
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
51.8°
53°
-0.7°
1 November – 10 November
49.3°
47.6°
+1°
11 November – 20 November
at normal
44°
—
October records over 66 years
85.8°1 October 1992All-time high
1.9°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Spokane Valley (3 mi).
Fri, 2359° / 34°0.09
59 °
Chester, Friday, 23 October
Light rain. High 59°, low 34°.
Pressure30.03 inHg
Wind6.7 mph NW
Humidity46%
Visibility6.2 mi
Dew point35°
Sat, 2457° / 26°0
57 °
Chester, Saturday, 24 October
Overcast. High 57°, low 26°.
Pressure30.21 inHg
Wind1.3 mph SE
Humidity47%
Visibility6.2 mi
Dew point33°
Sun, 2561° / 36°0
61 °
Chester, Sunday, 25 October
Overcast. High 61°, low 36°.
Pressure30.03 inHg
Wind5.5 mph NE
Humidity50%
Visibility6.2 mi
Dew point38°
Mon, 2659° / 41°0
59 °
Chester, Monday, 26 October
Overcast. High 59°, low 41°.
Pressure29.97 inHg
Wind3.9 mph NE
Humidity50%
Visibility6.2 mi
Dew point36°
Tue, 2750° / 40°0.01
50 °
Chester, Tuesday, 27 October
Light rain. High 50°, low 40°.
Pressure30.12 inHg
Wind5.8 mph SW
Humidity84%
Visibility—
Dew point42°
Wed, 2846° / 35°0.18
46 °
Chester, Wednesday, 28 October
Light rain. High 46°, low 35°.
Pressure30.33 inHg
Wind6.9 mph NE
Humidity83%
Visibility—
Dew point39°
Thu, 2947° / 33°0
47 °
Chester, Thursday, 29 October
Overcast. High 47°, low 33°.
Pressure29.94 inHg
Wind6.1 mph NE
Humidity42%
Visibility—
Dew point19°
Fri, 3037° / 36°0.26
37 °
Chester, Friday, 30 October
Snow. High 37°, low 36°.
Pressure30.06 inHg
Wind3.6 mph SW
Humidity95%
Visibility—
Dew point35°
Sat, 3138° / 36°0.22
38 °
Chester, Saturday, 31 October
Snow. High 38°, low 36°.
Pressure30.12 inHg
Wind3.4 mph SW
Humidity99%
Visibility—
Dew point37°
Sun, 0145° / 38°0
45 °
Chester, Sunday, 1 November
Overcast. High 45°, low 38°.
Pressure30.33 inHg
Wind3.8 mph N
Humidity72%
Visibility—
Dew point33°
Mon, 0246° / 32°0
46 °
Chester, Monday, 2 November
Clear. High 46°, low 32°.
Pressure30.59 inHg
Wind2.9 mph E
Humidity62%
Visibility—
Dew point28°
Tue, 0347° / 32°0
47 °
Chester, Tuesday, 3 November
Overcast. High 47°, low 32°.
Pressure30.65 inHg
Wind3.8 mph E
Humidity65%
Visibility—
Dew point29°
Wed, 0451° / 34°0
51 °
Chester, Wednesday, 4 November
Partly cloudy. High 51°, low 34°.
Pressure30.50 inHg
Wind3.3 mph NE
Humidity61%
Visibility—
Dew point30°
Thu, 0553° / 36°0
53 °
Chester, Thursday, 5 November
Clear. High 53°, low 36°.
Pressure30.33 inHg
Wind2.9 mph NE
Humidity59%
Visibility—
Dew point31°
Fri, 0653° / 38°0
53 °
Chester, Friday, 6 November
Partly cloudy. High 53°, low 38°.
Pressure30.24 inHg
Wind3 mph W
Humidity61%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0747° / 33°0.13
47 °
Chester, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.13 in
Chance of precipitation45%
Record high62° (1999)
Record low14° (2017)
Sun, 0846° / 33°0.07
46 °
Chester, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation30%
Record high63° (2016)
Record low17° (2022)
Mon, 0946° / 32°0.09
46 °
Chester, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.09 in
Chance of precipitation43%
Record high60° (2016)
Record low12° (2022)
Tue, 1045° / 32°0.09
45 °
Chester, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.09 in
Chance of precipitation45%
Record high59° (2016)
Record low14° (2022)
Wed, 1146° / 31°0.09
46 °
Chester, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.09 in
Chance of precipitation35%
Record high61° (1990)
Record low10° (2000)
Thu, 1245° / 32°0.11
45 °
Chester, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation47%
Record high66° (1999)
Record low9° (1985)
Fri, 1345° / 32°0.11
45 °
Chester, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation43%
Record high61° (1999)
Record low8° (1985)
Sat, 1445° / 32°0.07
45 °
Chester, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.07 in
Chance of precipitation35%
Record high62° (1999)
Record low15° (2000)
Sun, 1545° / 31°0.09
45 °
Chester, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.09 in
Chance of precipitation38%
Record high61° (2001)
Record low13° (2000)
Mon, 1644° / 32°0.13
44 °
Chester, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.13 in
Chance of precipitation45%
Record high57° (1999)
Record low19° (1964)
Tue, 1744° / 32°0.14
44 °
Chester, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.14 in
Chance of precipitation52%
Record high58° (1976)
Record low20° (1964)
Wed, 1843° / 31°0.09
43 °
Chester, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation38%
Record high54° (2003)
Record low16° (1994)
Thu, 1942° / 29°0.1
42 °
Chester, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.1 in
Chance of precipitation42%
Record high54° (1966)
Record low6° (1985)
Fri, 2042° / 31°0.16
42 °
Chester, Friday, 20 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.16 in
Chance of precipitation52%
Record high55° (2002)
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 Chester, 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 Chester, 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.