As of 08:24 PDT

Weather in Chester, WA

36°

Chester, Sunday, 18 October, 08:24

Clear. Feels like 36°. High 62°, low 37°.

Pressure30.15 inHg

Wind0 mph N

Humidity92%

Visibility6.2 mi

Dew point35°

See detailed hourly forecast

Monthly outlook for Chester, WA: average high 52.8°, average low 37.2°. That is 0.6° below the climate normal for October. Precipitation is expected on 5 days (about 2.4 inches), against a normal of 5 days and 1.2 inches. The warmest day looks like 20 October (68°), the coolest 31 October (28.8°).

52.8°/37.2°

Average high / low

−0.6°

Below normal

5 / 5

Wet days / normal

2.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
18 October – 27 October	55.8°	56°	-0.1°
28 October – 6 November	47.8°	49.4°	-0.9°
7 November – 16 November	at normal	45.3°	—

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).

Mon, 1960° / 33°

60 °

Chester, Monday, 19 October

Overcast. High 60°, low 33°.

Pressure29.91 inHg

Wind1.4 mph NW

Humidity54%

Visibility6.2 mi

Dew point39°

Tue, 2068° / 41°

68 °

Chester, Tuesday, 20 October

Overcast. High 68°, low 41°.

Pressure30.03 inHg

Wind1.8 mph NW

Humidity52%

Visibility6.2 mi

Dew point42°

Wed, 2167° / 40°

67 °

Chester, Wednesday, 21 October

Partly cloudy. High 67°, low 40°.

Pressure29.97 inHg

Wind1.6 mph NW

Humidity51%

Visibility6.2 mi

Dew point44°

Thu, 2254° / 43°

0.59

54 °

Chester, Thursday, 22 October

Rain. High 54°, low 43°.

Pressure29.80 inHg

Wind6.9 mph S

Humidity70%

Visibility—

Dew point43°

Fri, 2354° / 41°

0.01

54 °

Chester, Friday, 23 October

Light rain. High 54°, low 41°.

Pressure30.03 inHg

Wind10.8 mph W

Humidity50%

Visibility—

Dew point31°

Sat, 2453° / 37°

53 °

Chester, Saturday, 24 October

Overcast. High 53°, low 37°.

Pressure30.36 inHg

Wind5 mph SE

Humidity39%

Visibility—

Dew point22°

Sun, 2545° / 42°

0.07

45 °

Chester, Sunday, 25 October

Light rain. High 45°, low 42°.

Pressure30.15 inHg

Wind5.6 mph E

Humidity69%

Visibility—

Dew point34°

Mon, 2648° / 40°

48 °

Chester, Monday, 26 October

Overcast. High 48°, low 40°.

Pressure30.00 inHg

Wind5.7 mph NE

Humidity70%

Visibility—

Dew point36°

Tue, 2746° / 38°

0.23

46 °

Chester, Tuesday, 27 October

Light rain. High 46°, low 38°.

Pressure30.00 inHg

Wind7.4 mph SW

Humidity97%

Visibility—

Dew point38°

Wed, 2850° / 35°

50 °

Chester, Wednesday, 28 October

Clear. High 50°, low 35°.

Pressure29.94 inHg

Wind9.4 mph SW

Humidity58%

Visibility—

Dew point30°

Thu, 2944° / 34°

44 °

Chester, Thursday, 29 October

Overcast. High 44°, low 34°.

Pressure29.91 inHg

Wind6.1 mph NW

Humidity66%

Visibility—

Dew point30°

Fri, 3044° / 29°

44 °

Chester, Friday, 30 October

Partly cloudy. High 44°, low 29°.

Pressure30.30 inHg

Wind4.8 mph SW

Humidity56%

Visibility—

Dew point24°

Sat, 3147° / 29°

47 °

Chester, Saturday, 31 October

Mostly clear. High 47°, low 29°.

Pressure30.18 inHg

Wind4 mph E

Humidity49%

Visibility—

Dew point21°

Sun, 0149° / 36°

0.18

49 °

Chester, Sunday, 1 November

Rain. High 49°, low 36°.

Pressure29.91 inHg

Wind5.3 mph SE

Humidity50%

Visibility—

Dew point24°

Mon, 0253° / 39°

1.3

53 °

Chester, Monday, 2 November

Rain. High 53°, low 39°.

Pressure29.80 inHg

Wind15.3 mph SW

Humidity91%

Visibility—

Dew point41°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 0349° / 35°

0.06

49 °

Chester, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.06 in

Chance of precipitation30%

Record high63° (1975)

Record low22° (2002)

Wed, 0449° / 35°

0.14

49 °

Chester, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.14 in

Chance of precipitation45%

Record high67° (1975)

Record low22° (2017)

Thu, 0548° / 34°

0.08

48 °

Chester, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°

Average low34°

Average precipitation0.08 in

Chance of precipitation40%

Record high65° (1975)

Record low19° (2003)

Fri, 0647° / 34°

0.1

47 °

Chester, Friday, 6 November

Climate normal for this date — 60-year average.

Average high47°

Average low34°

Average precipitation0.1 in

Chance of precipitation52%

Record high62° (2012)

Record low16° (1994)

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)

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.